{"id":4847,"date":"2026-06-06T00:32:36","date_gmt":"2026-06-06T00:32:36","guid":{"rendered":"https:\/\/productionscrews.com\/screw-and-bolt\/"},"modified":"2026-06-06T00:32:36","modified_gmt":"2026-06-06T00:32:36","slug":"screw-and-bolt","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/screw-and-bolt\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 v\u00edt v\u00e0 bu l\u00f4ng: C\u00e1c lo\u1ea1i, s\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 c\u00e1ch ch\u1ecdn ch\u1ed1t ph\u00f9 h\u1ee3p"},"content":{"rendered":"<blockquote>\n<p>M\u1ed9t v\u00edt \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o v\u1eadt li\u1ec7u ho\u1eb7c t\u1ef1 t\u1ea1o ren; m\u1ed9t bu l\u00f4ng \u0111i qua l\u1ed7 tho\u00e1t v\u00e0 k\u1eb9p v\u1edbi \u0111ai \u1ed1c \u1edf ph\u00eda \u0111\u1ed1i di\u1ec7n.<\/p>\n<\/blockquote>\n<p><img decoding=\"async\" alt=\"v\u00edt v\u00e0 bu l\u00f4ng \u2014 b\u1ed9 s\u01b0u t\u1eadp ho\u00e0n ch\u1ec9nh g\u1ed3m bu l\u00f4ng l\u1ee5c gi\u00e1c, v\u00edt m\u00e1y v\u00e0 bu l\u00f4ng c\u1ed5 vu\u00f4ng \u0111\u01b0\u1ee3c tr\u01b0ng b\u00e0y tr\u00ean m\u1eb7t b\u00e0n inox trong x\u01b0\u1edfng d\u01b0\u1edbi \u00e1nh s\u00e1ng chuy\u00ean nghi\u1ec7p\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/06\/screw-and-bolt-hero.png\" \/><\/p>\n<p>B\u01b0\u1edbc v\u00e0o b\u1ea5t k\u1ef3 c\u1eeda h\u00e0ng d\u1ee5ng c\u1ee5 n\u00e0o, l\u1ed1i \u0111i v\u00edt v\u00e0 bu l\u00f4ng tr\u00f4ng nh\u01b0 m\u1ed9t s\u1ef1 h\u1ed7n lo\u1ea1n c\u00f3 t\u1ed5 ch\u1ee9c \u2014 h\u00e0ng tr\u0103m th\u00f9ng, h\u00e0ng ch\u1ee5c lo\u1ea1i \u0111\u1ea7u v\u1eb7n, n\u0103m lo\u1ea1i ho\u00e0n thi\u1ec7n, h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 inch n\u1eb1m c\u00e1ch nhau ba feet. H\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi ch\u1ecdn b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec tr\u00f4ng \u0111\u00fang v\u00e0 hy v\u1ecdng m\u1ecdi vi\u1ec7c su\u00f4n s\u1ebb. \u0110i\u1ec1u \u0111\u00f3 ch\u1ec9 hi\u1ec7u qu\u1ea3 cho \u0111\u1ebfn khi m\u1ed9t m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u b\u1ecb h\u1ecfng l\u00fac 3 gi\u1edd s\u00e1ng ho\u1eb7c m\u1ed9t v\u00edt m\u00e1y b\u1ecb tu\u00f4n ren sau l\u1ea7n l\u1eafp r\u00e1p th\u1ee9 ba. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd ch\u1ec9 cho b\u1ea1n ch\u00ednh x\u00e1c \u0111i\u1ec1u g\u00ec ph\u00e2n bi\u1ec7t v\u00edt v\u1edbi bu l\u00f4ng, lo\u1ea1i n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng vi\u1ec7c n\u00e0o, c\u00e1ch th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt li\u00ean k\u1ebft v\u1edbi hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf, v\u00e0 nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn g\u00e2y ra h\u1ea7u h\u1ebft c\u00e1c th\u1ea5t b\u1ea1i c\u1ee7a ch\u1ed1t trong s\u1ea3n xu\u1ea5t v\u00e0 x\u00e2y d\u1ef1ng.<\/p>\n<h2>S\u1ef1 Kh\u00e1c Bi\u1ec7t Gi\u1eefa V\u00edt v\u00e0 Bu l\u00f4ng L\u00e0 G\u00ec?<\/h2>\n<p><strong>M\u1ed9t v\u00edt \u0111\u01b0\u1ee3c v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u; m\u1ed9t bu l\u00f4ng \u0111i qua l\u1ed7 tho\u00e1t v\u00e0 k\u1eb9p v\u1edbi \u0111ai \u1ed1c.<\/strong><\/p>\n<p>C\u00e2u tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u n\u00e0y bao qu\u00e1t h\u1ea7u h\u1ebft c\u00e1c t\u00ecnh hu\u1ed1ng. Nh\u01b0ng \u0111\u1ecbnh ngh\u0129a k\u1ef9 thu\u1eadt ch\u00ednh th\u1ee9c s\u00e2u h\u01a1n, v\u00e0 hi\u1ec3u n\u00f3 s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng sai s\u00f3t t\u1ed1n k\u00e9m.<\/p>\n<h3>Thi\u1ebft k\u1ebf ren v\u00e0 h\u00ecnh d\u1ea1ng th\u00e2n<\/h3>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 h\u1ecdc gi\u1eefa v\u00edt v\u00e0 bu l\u00f4ng n\u1eb1m \u1edf m\u1ee9c \u0111\u1ed9 \u0103n kh\u1edbp c\u1ee7a ren. <strong>v\u00edt<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi l\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ren ho\u1eb7c t\u1ef1 c\u1eaft v\u00e0 t\u1ea1o ren khi \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o. Ren th\u01b0\u1eddng ch\u1ea1y d\u1ecdc h\u1ea7u h\u1ebft ho\u1eb7c to\u00e0n b\u1ed9 th\u00e2n v\u00edt \u2014 v\u00ed d\u1ee5, v\u00edt m\u00e1y \u0111\u01b0\u1ee3c ren ho\u00e0n to\u00e0n t\u1eeb \u0111\u1ea7u \u0111\u1ebfn m\u0169 v\u00e0 \u0103n kh\u1edbp v\u1edbi l\u1ed7 \u0111\u00e3 t\u1ea1o ren ho\u1eb7c ch\u00e8n ren.<\/p>\n<p>A <strong>bu l\u00f4ng<\/strong> th\u01b0\u1eddng c\u00f3 ph\u1ea7n th\u00e2n nh\u1eb5n, kh\u00f4ng c\u00f3 ren g\u1ea7n \u0111\u1ea7u, ch\u1ec9 c\u00f3 ren \u1edf \u0111\u1ea7u m\u0169i. Th\u00e2n nh\u1eb5n n\u1ed1i qua m\u1ed1i gh\u00e9p; ph\u1ea7n c\u00f3 ren \u0103n kh\u1edbp v\u1edbi \u0111ai \u1ed1c \u1edf m\u1eb7t \u0111\u1ed1i di\u1ec7n. Bu l\u00f4ng kh\u00f4ng xoay v\u00e0o v\u1eadt li\u1ec7u \u2014 n\u00f3 \u0111i qua l\u1ed7 tho\u00e1t v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t t\u1eeb ph\u00eda \u0111ai \u1ed1c.<\/p>\n<p>Theo <a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b18-2-1-square-hex-bolts-screws-inch-series\" target=\"_blank\" rel=\"noopener\">ASME B18.2.1 v\u00e0 H\u1ed9i K\u1ef9 s\u01b0 C\u01a1 kh\u00ed Vi\u1ec7t Nam<\/a>, m\u1ed9t bu l\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a ch\u00ednh th\u1ee9c l\u00e0 ch\u1ed1t c\u00f3 ren ngo\u00e0i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u00e8n qua l\u1ed7 v\u00e0 si\u1ebft ch\u1eb7t b\u1eb1ng c\u00e1ch v\u1eb7n \u0111ai \u1ed1c, trong khi v\u00edt \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi ren \u0111\u00e3 t\u1ea1o s\u1eb5n ho\u1eb7c t\u1ef1 t\u1ea1o ren.<\/p>\n<h3>C\u00e1ch ch\u00fang \u0111\u01b0\u1ee3c g\u1eafn \u2014 C\u00f3 ho\u1eb7c kh\u00f4ng c\u00f3 \u0111ai \u1ed1c<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>V\u00edt<\/th>\n<th>\u1ed0c v\u00edt<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tham gia ren<\/td>\n<td>V\u00e0o v\u1eadt li\u1ec7u ho\u1eb7c l\u1ed7 \u0111\u00e3 t\u1ea1o ren<\/td>\n<td>V\u00e0o \u0111ai \u1ed1c<\/td>\n<\/tr>\n<tr>\n<td>H\u00ecnh d\u1ea1ng th\u00e2n<\/td>\n<td>Ren to\u00e0n b\u1ed9 ho\u1eb7c h\u1ea7u h\u1ebft th\u00e2n<\/td>\n<td>Th\u01b0\u1eddng ch\u1ec9 ren m\u1ed9t ph\u1ea7n<\/td>\n<\/tr>\n<tr>\n<td>Si\u1ebft ch\u1eb7t b\u1eb1ng<\/td>\n<td>V\u1eb7n \u0111\u1ea7u v\u00edt<\/td>\n<td>Si\u1ebft ch\u1eb7t \u0111ai \u1ed1c<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed7 \u0111\u00e3 khoan tr\u01b0\u1edbc<\/td>\n<td>T\u00f9y ch\u1ecdn (t\u1ef1 t\u1ea1o ren) ho\u1eb7c \u0111\u00e3 t\u1ea1o ren<\/td>\n<td>Y\u00eau c\u1ea7u l\u1ed7 tho\u00e1t<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c lo\u1ea1i \u0111\u1ea7u v\u1eb7n th\u00f4ng d\u1ee5ng<\/td>\n<td>Phillips, Torx, l\u1ee5c gi\u00e1c \u00e2m, r\u00e3nh th\u1eb3ng<\/td>\n<td>\u0110\u1ea7u l\u1ee5c gi\u00e1c, m\u1eb7t ph\u1eb3ng v\u1eb7n, \u0111\u1ea7u ch\u1ee5p<\/td>\n<\/tr>\n<tr>\n<td>C\u01a1 ch\u1ebf ch\u1ecbu l\u1ef1c ch\u00ednh<\/td>\n<td>S\u1ef1 \u0103n kh\u1edbp ren trong v\u1eadt li\u1ec7u n\u1ec1n<\/td>\n<td>T\u1ea3i tr\u01b0\u1edbc bu l\u00f4ng v\u00e0 l\u1ef1c k\u1eb9p c\u1ee7a \u0111ai \u1ed1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p><strong>M\u1eb9o chuy\u00ean nghi\u1ec7p:<\/strong> V\u1eb7n m\u1ed9t bu l\u00f4ng v\u00e0o kh\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c taro s\u1eb5n \u2014 kh\u00f4ng d\u00f9ng \u0111ai \u1ed1c \u2014 v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt s\u1ebd khi\u1ebfn n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t v\u00edt. \u0110\u1ecbnh ngh\u0129a c\u1ee7a ASME l\u00e0 d\u1ef1a tr\u00ean ch\u1ee9c n\u0103ng: \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 c\u00e1ch ch\u1ed1t t\u1ea1o ra l\u1ef1c k\u1eb9p, kh\u00f4ng ph\u1ea3i t\u00ean g\u1ecdi tr\u00ean nh\u00e3n th\u00f9ng.<\/p>\n<\/blockquote>\n<p>H\u1ec7 qu\u1ea3 th\u1ef1c t\u1ebf: v\u00edt th\u01b0\u1eddng ph\u00f9 h\u1ee3p h\u01a1n khi kh\u00f4ng gian ho\u1eb7c tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng cho ph\u00e9p d\u00f9ng \u0111ai \u1ed1c ph\u00eda sau, ho\u1eb7c khi c\u1ea7n th\u00e1o l\u1eafp th\u01b0\u1eddng xuy\u00ean m\u00e0 kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn c\u1ea3 hai m\u1eb7t. Bu l\u00f4ng l\u00e0 l\u1ef1a ch\u1ecdn cho c\u00e1c k\u1ebft n\u1ed1i k\u1ebft c\u1ea5u ch\u1ecbu t\u1ea3i l\u1edbn ho\u1eb7c an to\u00e0n, n\u01a1i c\u1ea7n ki\u1ec3m so\u00e1t t\u1ea3i tr\u01b0\u1edbc v\u00e0 c\u00f3 th\u1ec3 si\u1ebft \u0111ai \u1ed1c \u0111\u00fang th\u00f4ng s\u1ed1.<\/p>\n<hr \/>\n<h2>C\u00e1c lo\u1ea1i v\u00edt: Ph\u00e2n t\u00edch \u0111\u1ea7y \u0111\u1ee7<\/h2>\n<p><strong>S\u00e1u lo\u1ea1i v\u00edt ch\u00ednh \u0111\u00e1p \u1ee9ng h\u1ea7u h\u1ebft m\u1ecdi \u1ee9ng d\u1ee5ng; l\u1ef1a ch\u1ecdn \u0111\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o v\u1eadt li\u1ec7u, t\u1ea3i tr\u1ecdng v\u00e0 vi\u1ec7c c\u00f3 l\u1ed7 \u0111\u00e3 taro s\u1eb5n hay kh\u00f4ng.<\/strong><\/p>\n<p>Ch\u1ecdn sai lo\u1ea1i v\u00edt \u2014 kh\u00f4ng ch\u1ec9 sai k\u00edch th\u01b0\u1edbc \u2014 l\u00e0 nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u g\u00e2y ph\u1ea3i s\u1eeda ch\u1eefa l\u1ea1i ch\u1ed1t trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch m\u1ed7i lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng v\u00e0 v\u1ecb tr\u00ed ph\u00f9 h\u1ee3p.<\/p>\n<h3>\u1ed0c v\u00edt m\u00e1y<\/h3>\n<p><strong>\u1ed0c v\u00edt m\u00e1y<\/strong> l\u00e0 c\u00e1c ch\u1ed1t c\u00f3 ren to\u00e0n b\u1ed9, thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1eafp v\u1edbi l\u1ed7 \u0111\u00e3 taro s\u1eb5n ho\u1eb7c ch\u00e8n ren. C\u00f3 s\u1eb5n c\u1ea3 h\u1ec7 m\u00e9t (M2 \u0111\u1ebfn M12 cho h\u1ea7u h\u1ebft thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u00e0 m\u00e1y m\u00f3c) v\u00e0 h\u1ec7 inch th\u1ed1ng nh\u1ea5t (UNC\/UNF). C\u00e1c ki\u1ec3u \u0111\u1ea7u v\u1eb7n g\u1ed3m Phillips, Torx, l\u1ee5c gi\u00e1c \u00e2m (\u0111\u1ea7u ch\u1ee5p), v\u00e0 r\u00e3nh th\u1eb3ng.<\/p>\n<p>D\u1ea1ng ren r\u1ea5t quan tr\u1ecdng: <strong>UNC (ren th\u00f4 th\u1ed1ng nh\u1ea5t qu\u1ed1c gia)<\/strong> l\u00e0 m\u1eb7c \u0111\u1ecbnh cho l\u1eafp r\u00e1p chung \u2014 v\u1eb7n nhanh h\u01a1n, ch\u1ecbu \u0111\u01b0\u1ee3c h\u01b0 h\u1ea1i nh\u1ecf, d\u1ec5 th\u00e1o l\u1eafp. <strong>UNF (ren m\u1ecbn th\u1ed1ng nh\u1ea5t qu\u1ed1c gia)<\/strong> c\u00f3 nhi\u1ec1u v\u00f2ng ren tr\u00ean m\u1ed7i inch h\u01a1n, t\u1ea1o ra t\u1ea3i tr\u01b0\u1edbc cao h\u01a1n v\u1edbi c\u00f9ng m\u1ed9t l\u1ef1c si\u1ebft. Ch\u1ecdn UNF khi \u01b0u ti\u00ean ch\u1ed1ng rung \u2014 \u0111\u1ed9ng c\u01a1, h\u1ed9p s\u1ed1, thi\u1ebft b\u1ecb quay. \u0110\u1eebng th\u00eam \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a ren m\u1ecbn n\u1ebfu kh\u00f4ng th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n<p>Theo <a href=\"https:\/\/www.astm.org\/f0593-17.html\" target=\"_blank\" rel=\"noopener\">ASTM F593 cho v\u00edt m\u00e1y b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9<\/a> v\u00e0 ASTM A307 cho th\u00e9p cacbon, \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u cho v\u00edt m\u00e1y th\u00e9p cacbon c\u1ea5p 5 l\u00e0 120.000\u2013150.000 psi; h\u1ee3p kim c\u1ea5p 8 \u0111\u1ea1t 150.000\u2013180.000 psi.<\/p>\n<h3>V\u00edt t\u1ef1 khoan<\/h3>\n<p><strong>V\u00edt t\u1ef1 khoan<\/strong> t\u1ef1 c\u1eaft ho\u1eb7c t\u1ea1o ren khi \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o, lo\u1ea1i b\u1ecf nhu c\u1ea7u ph\u1ea3i taro l\u1ed7 tr\u01b0\u1edbc. C\u00f3 hai lo\u1ea1i ph\u1ee5 v\u1edbi \u0111\u1eb7c t\u00ednh r\u1ea5t kh\u00e1c nhau:<\/p>\n<ul>\n<li><strong>C\u1eaft ren (Lo\u1ea1i 1, 23, 25):<\/strong> lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u v\u1eadt l\u00fd khi ch\u00fang \u0111i v\u00e0o. T\u1ed1t nh\u1ea5t cho nh\u1ef1a c\u1ee9ng, t\u1ea5m kim lo\u1ea1i m\u1ecfng v\u00e0 nh\u00f4m nh\u1eb9. C\u00f3 phoi t\u1ea1o ra \u2014 kh\u00f4ng s\u1eed d\u1ee5ng lo\u1ea1i n\u00e0y trong l\u1ed7 m\u00f9 c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed k\u00edn v\u00ec phoi c\u00f3 th\u1ec3 g\u00e2y \u0111o\u1ea3n m\u1ea1ch.<\/li>\n<li><strong>T\u1ea1o ren (Lo\u1ea1i AB, B, ki\u1ec3u TAPTITE\u00ae):<\/strong> d\u1ecbch chuy\u1ec3n v\u00e0 gia c\u00f4ng ngu\u1ed9i v\u1eadt li\u1ec7u thay v\u00ec c\u1eaft. Kh\u00f4ng c\u00f3 phoi, li\u00ean k\u1ebft ren ch\u1eafc h\u01a1n, nh\u01b0ng c\u1ea7n m\u00f4-men xo\u1eafn l\u1edbn h\u01a1n \u0111\u1ec3 v\u1eb7n v\u00e0 c\u1ea7n khoan l\u1ed7 d\u1eabn ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u. Ti\u00eau chu\u1ea9n trong l\u1eafp r\u00e1p n\u1ed9i th\u1ea5t \u00f4 t\u00f4 t\u1eeb nh\u1eefng n\u0103m 1980 \u2014 t\u1ea1o ren thay v\u00ec c\u1eaft gi\u00fap m\u00f4-men xo\u1eafn ch\u1ed1ng tu\u1ed9t ren \u1ed5n \u0111\u1ecbnh ngay c\u1ea3 khi nh\u1ef1a gi\u00e0 v\u00e0 tr\u1edf n\u00ean gi\u00f2n h\u01a1n.<\/li>\n<\/ul>\n<h3>\u1ed0c v\u00edt g\u1ed7<\/h3>\n<p><strong>\u1ed0c v\u00edt g\u1ed7<\/strong> c\u00f3 th\u00e2n v\u00e1t, b\u01b0\u1edbc ren th\u00f4 h\u01a1n (8\u201314 TPI), v\u00e0 th\u01b0\u1eddng c\u00f3 \u0111\u1ea7u nh\u1ecdn \u0111\u1ec3 t\u1ef1 b\u1eaft v\u00e0o g\u1ed7. Ph\u1ea7n th\u00e2n tr\u00ean nh\u1eb5n v\u00e0 kh\u00f4ng c\u00f3 ren \u2014 khi v\u00edt si\u1ebft ch\u1eb7t, ph\u1ea7n th\u00e2n nh\u1eb5n k\u00e9o t\u1ea5m g\u1ed7 g\u1ea7n v\u1ec1 ph\u00eda t\u1ea5m g\u1ed7 xa thay v\u00ec ren xuy\u00ean qua c\u1ea3 hai.<\/p>\n<p>\u0110\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u, v\u00edt g\u1ed7 th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb t\u1ea3i tr\u1ecdng c\u00f4ng b\u1ed1. <strong>V\u00edt k\u1ebft c\u1ea5u \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea ICC-ES<\/strong> (Simpson SDS, GRK R4, LedgerLOK) th\u00ec c\u00f3 \u2014 ch\u00fang \u0111\u01b0\u1ee3c ki\u1ec3m tra theo <a href=\"https:\/\/www.astm.org\/f1575_f1575m-03r17.html\" target=\"_blank\" rel=\"noopener\">ASTM F1575 v\u00e0 F1667<\/a> v\u00e0 c\u00f4ng b\u1ed1 t\u1ea3i tr\u1ecdng c\u1eaft v\u00e0 t\u1ea3i tr\u1ecdng r\u00fat t\u1ed1i \u0111a m\u00e0 k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong c\u00f4ng vi\u1ec7c y\u00eau c\u1ea7u gi\u1ea5y ph\u00e9p. Thay th\u1ebf v\u00edt s\u00e0n cho v\u00edt SDS trong li\u00ean k\u1ebft d\u1ea7m l\u00e0 vi ph\u1ea1m quy chu\u1ea9n.<\/p>\n<h3>\u1ed0c v\u00edt t\u1ea5m kim lo\u1ea1i<\/h3>\n<p><strong>\u1ed0c v\u00edt t\u1ea5m kim lo\u1ea1i<\/strong> c\u00f3 th\u00e2n ren to\u00e0n b\u1ed9, th\u00e2n th\u00e9p t\u00f4i c\u1ee9ng v\u00e0 \u0111\u1ea7u nh\u1ecdn \u0111\u1ec3 ren v\u00e0o kim lo\u1ea1i m\u1ecfng (t\u1eeb 28 gauge \u0111\u1ebfn 10 gauge, kho\u1ea3ng 0,015\u2033 \u0111\u1ebfn 0,134\u2033). Lo\u1ea1i A c\u00f3 b\u01b0\u1edbc ren th\u00f4 h\u01a1n; lo\u1ea1i B c\u00f3 b\u01b0\u1edbc ren m\u1ecbn h\u01a1n v\u1edbi \u0111\u1ea7u t\u00f9 h\u01a1n; lo\u1ea1i AB k\u1ebft h\u1ee3p c\u1ea3 hai \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 l\u00e0 lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<p>Trong c\u00f4ng vi\u1ec7c HVAC v\u00e0 t\u1ee7 \u0111i\u1ec7n, ti\u00eau chu\u1ea9n l\u00e0 v\u00edt t\u00f4n \u0111\u1ea7u l\u1ee5c gi\u00e1c c\u00f3 long \u0111en #8 ho\u1eb7c #10 v\u1edbi \u0111\u1ea7u v\u1eb7n l\u1ee5c gi\u00e1c. Ngo\u00e0i tr\u1eddi ho\u1eb7c m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, n\u00ean ch\u1ecdn lo\u1ea1i m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng ho\u1eb7c th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n<h3>V\u00edt c\u1ed1 \u0111\u1ecbnh (Set Screws)<\/h3>\n<p><strong>V\u00edt c\u1ed1 \u0111\u1ecbnh<\/strong> kh\u00f4ng c\u00f3 \u0111\u1ea7u \u2014 to\u00e0n b\u1ed9 th\u00e2n \u0111\u01b0\u1ee3c ren, thi\u1ebft k\u1ebf \u0111\u1ec3 n\u1eb1m ph\u1eb3ng ho\u1eb7c ch\u00ecm d\u01b0\u1edbi b\u1ec1 m\u1eb7t. \u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t: c\u1ed1 \u0111\u1ecbnh puli, b\u00e1nh r\u0103ng, v\u00f2ng c\u1ed5 ho\u1eb7c b\u00e1nh x\u00edch v\u00e0o tr\u1ee5c. V\u00edt ch\u1ed1t \u0111\u1ea7u c\u1ed1c b\u00e1m v\u00e0o tr\u1ee5c cho kh\u1ea3 n\u0103ng gi\u1eef m\u00f4-men xo\u1eafn cao; \u0111\u1ea7u ph\u1eb3ng ph\u00e2n b\u1ed5 l\u1ef1c tr\u00ean v\u1eadt li\u1ec7u m\u1ec1m h\u01a1n.<\/p>\n<p>C\u1ea5p ti\u00eau chu\u1ea9n cho \u1ee9ng d\u1ee5ng tr\u1ee5c y\u00eau c\u1ea7u cao: L\u1edbp 45H (th\u00e9p cacbon) ho\u1eb7c th\u00e9p h\u1ee3p kim cho m\u00f4i tr\u01b0\u1eddng m\u00f4-men xo\u1eafn l\u1edbn. H\u1ee3p ch\u1ea5t kh\u00f3a ren (Loctite 243 xanh ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng) l\u00e0 th\u1ef1c h\u00e0nh ti\u00eau chu\u1ea9n trong m\u00e1y m\u00f3c rung \u2014 v\u00edt ch\u1ed1t n\u1ed5i ti\u1ebfng v\u1edbi vi\u1ec7c t\u1ef1 l\u1ecfng ra \u1edf nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh n\u1ebfu \u0111\u1ec3 kh\u00f4.<\/p>\n<h3>V\u00edt chuy\u00ean d\u1ee5ng<\/h3>\n<p>Ba lo\u1ea1i v\u00edt chuy\u00ean d\u1ee5ng th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong s\u1ea3n xu\u1ea5t:<\/p>\n<ul>\n<li><strong>V\u00edt vai (bu l\u00f4ng d\u1eabn h\u01b0\u1edbng):<\/strong> ph\u1ea7n vai kh\u00f4ng ren \u0111\u01b0\u1ee3c gia c\u00f4ng ch\u00ednh x\u00e1c l\u00e0 \u0111\u1eb7c \u0111i\u1ec3m ch\u1ee9c n\u0103ng \u2014 d\u00f9ng l\u00e0m ch\u1ed1t xoay, d\u1eabn h\u01b0\u1edbng tuy\u1ebfn t\u00ednh ho\u1eb7c ch\u1ed1t c\u0103n ch\u1ec9nh khu\u00f4n\/pun. Dung sai \u0111\u01b0\u1eddng k\u00ednh gi\u1eef \u1edf m\u1ee9c \u00b10,001\u2033. Ph\u1ed5 bi\u1ebfn trong khu\u00f4n \u00e9p nh\u1ef1a v\u00e0 c\u01a1 c\u1ea5u ch\u00ednh x\u00e1c.<\/li>\n<li><strong>V\u00edt gi\u1eef c\u1ed1 \u0111\u1ecbnh:<\/strong> \u0111\u01b0\u1ee3c \u00e9p v\u00e0o t\u1ea5m v\u00e0 gi\u1eef l\u1ea1i ngay c\u1ea3 khi th\u00e1o ra ho\u00e0n to\u00e0n \u2014 d\u00f9ng trong khung m\u00e1y ch\u1ee7, t\u1ea5m truy c\u1eadp v\u00e0 n\u1eafp thi\u1ebft b\u1ecb n\u01a1i v\u00edt r\u01a1i l\u00e0 nguy c\u01a1 FOD (v\u1eadt th\u1ec3 l\u1ea1).<\/li>\n<li><strong>\u1ed0c v\u00edt an ninh:<\/strong> \u0110\u1ea7u m\u1ed9t chi\u1ec1u, Torx-Plus ho\u1eb7c \u0111\u1ea7u pin-in-hex \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c ph\u00e1 ho\u1ea1i. Y\u00eau c\u1ea7u cho m\u1ed9t s\u1ed1 v\u1ecf thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng v\u00e0 n\u1eafp \u0111\u1ed3ng h\u1ed3 \u0111i\u1ec7n.<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i \u1ed1c v\u00edt<\/th>\n<th>V\u1eadt li\u1ec7u n\u1ec1n<\/th>\n<th>Ren<\/th>\n<th>Ch\u1ea1y<\/th>\n<th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u1ed0c v\u00edt m\u00e1y<\/td>\n<td>Kim lo\u1ea1i c\u00f3 ren \/ l\u1eafp ch\u00e8n<\/td>\n<td>UNC, UNF ho\u1eb7c M\u00e9t<\/td>\n<td>\u0110\u1ea7u bake, Torx, l\u1ee5c gi\u00e1c trong<\/td>\n<td>\u0110i\u1ec7n t\u1eed, m\u00e1y m\u00f3c, thi\u1ebft b\u1ecb gia d\u1ee5ng<\/td>\n<\/tr>\n<tr>\n<td>T\u1ef1 t\u1ea1o ren (c\u1eaft)<\/td>\n<td>Kim lo\u1ea1i t\u1ea5m, nh\u1ef1a c\u1ee9ng<\/td>\n<td>AB, B<\/td>\n<td>Phillips, l\u1ee5c gi\u00e1c<\/td>\n<td>H\u1ec7 th\u1ed1ng HVAC, v\u1ecf thi\u1ebft b\u1ecb, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n<\/td>\n<\/tr>\n<tr>\n<td>T\u1ef1 t\u1ea1o ren (t\u1ea1o h\u00ecnh)<\/td>\n<td>Nh\u1ef1a nhi\u1ec7t d\u1ebbo, kim lo\u1ea1i m\u1ec1m<\/td>\n<td>TAPTITE\u00ae<\/td>\n<td>Torx, Phillips<\/td>\n<td>N\u1ed9i th\u1ea5t \u00f4 t\u00f4, h\u00e0ng ti\u00eau d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>\u1ed0c v\u00edt g\u1ed7<\/td>\n<td>G\u1ed7<\/td>\n<td>Th\u00e2n th\u00f4, thu\u00f4n<\/td>\n<td>Phillips, \u0111\u1ea7u vu\u00f4ng, Torx<\/td>\n<td>Khung, t\u1ee7, s\u00e0n ngo\u00e0i tr\u1eddi<\/td>\n<\/tr>\n<tr>\n<td>\u1ed0c v\u00edt t\u1ea5m kim lo\u1ea1i<\/td>\n<td>T\u1ea5m kim lo\u1ea1i<\/td>\n<td>\u0110\u1ea7u nh\u1ecdn, m\u1ecbn<\/td>\n<td>\u0110\u1ea7u l\u1ee5c gi\u00e1c c\u00f3 v\u00f2ng \u0111\u1ec7m<\/td>\n<td>L\u1ee3p m\u00e1i, t\u1ea5m thi\u1ebft b\u1ecb, h\u1ec7 th\u1ed1ng HVAC<\/td>\n<\/tr>\n<tr>\n<td>\u1ed0c c\u1ed1 \u0111\u1ecbnh<\/td>\n<td>Tr\u1ee5c \/ l\u1ed7<\/td>\n<td>\u0110\u1ea7u c\u1ed1c \/ ph\u1eb3ng \/ b\u1ea7u d\u1ee5c UNC<\/td>\n<td>\u1ed4 c\u1eafm l\u1ee5c gi\u00e1c (Allen)<\/td>\n<td>V\u00f2ng k\u1eb9p tr\u1ee5c, b\u00e1nh r\u0103ng, puli<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img decoding=\"async\" alt=\"v\u00edt v\u00e0 bu l\u00f4ng \u2014 s\u00e1u lo\u1ea1i v\u00edt \u0111\u01b0\u1ee3c x\u1ebfp c\u1ea1nh nhau tr\u00ean k\u1ec7 tr\u1eafng trong studio t\u1eeb tr\u00e1i sang ph\u1ea3i: v\u00edt m\u00e1y, v\u00edt t\u1ef1 khoan, v\u00edt g\u1ed7, v\u00edt t\u00f4n, v\u00edt ch\u1ec9nh, v\u00edt vai, g\u00f3c nh\u00ecn t\u1eeb tr\u00ean xu\u1ed1ng\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/06\/screw-and-bolt-types.png\" \/><\/p>\n<hr \/>\n<h2>C\u00e1c lo\u1ea1i bu l\u00f4ng: T\u1eeb l\u1ee5c gi\u00e1c \u0111\u1ebfn k\u1ebft c\u1ea5u<\/h2>\n<p><strong>S\u00e1u nh\u00f3m bu l\u00f4ng \u0111\u00e1p \u1ee9ng h\u1ea7u h\u1ebft nhu c\u1ea7u c\u00f4ng nghi\u1ec7p v\u00e0 x\u00e2y d\u1ef1ng; h\u00e3y ch\u1ecdn bu l\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi h\u00ecnh d\u1ea1ng m\u1ed1i n\u1ed1i tr\u01b0\u1edbc, sau \u0111\u00f3 x\u00e1c \u0111\u1ecbnh c\u1ea5p \u0111\u1ed9 v\u00e0 l\u1edbp ph\u1ee7.<\/strong><\/p>\n<p>B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cung c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o. \u0110i\u1ec1u m\u00e0 n\u00f3 kh\u00f4ng cho b\u1ea1n bi\u1ebft l\u00e0 li\u1ec7u bu l\u00f4ng l\u1ee5c gi\u00e1c, bu l\u00f4ng c\u1ed5 vu\u00f4ng hay bu l\u00f4ng ch\u1eef U c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi h\u00ecnh d\u1ea1ng m\u1ed1i n\u1ed1i c\u1ee7a b\u1ea1n hay kh\u00f4ng \u2014 \u0111\u00e2y l\u00e0 n\u01a1i th\u01b0\u1eddng x\u1ea3y ra vi\u1ec7c thi\u1ebft k\u1ebf qu\u00e1 m\u1ee9c.<\/p>\n<h3>\u1ed0c v\u00edt h\u00ecnh l\u1ee5c gi\u00e1c<\/h3>\n<p><strong>Bu l\u00f4ng h\u00ecnh l\u1ee5c gi\u00e1c<\/strong> l\u00e0 nh\u1eefng s\u1ea3n ph\u1ea9m ch\u1ee7 l\u1ef1c trong l\u1eafp r\u00e1p k\u1ebft c\u1ea5u v\u00e0 c\u01a1 kh\u00ed. \u0110\u1ea7u s\u00e1u c\u1ea1nh, c\u00f3 s\u1eb5n t\u1eeb 1\/4\u2033 \u0111\u1ebfn 1-1\/2\u2033 (SAE\/ASME B18.2.1) v\u00e0 M5 \u0111\u1ebfn M36 (ISO). Ren m\u1ed9t ph\u1ea7n ho\u1eb7c to\u00e0n b\u1ed9. K\u00fd hi\u1ec7u c\u1ea5p \u0111\u1ed9 SAE \u0111\u01b0\u1ee3c \u0111\u00f3ng tr\u00ean \u0111\u1ea7u bu l\u00f4ng th\u1ec3 hi\u1ec7n \u0111\u1ed9 b\u1ec1n:<\/p>\n<ul>\n<li><strong>C\u1ea5p 2<\/strong> (kh\u00f4ng c\u00f3 k\u00fd hi\u1ec7u): th\u00e9p cacbon th\u1ea5p, \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u 74.000 psi, d\u00f9ng cho c\u00e1c m\u1ed1i n\u1ed1i nh\u1eb9, kh\u00f4ng quan tr\u1ecdng<\/li>\n<li><strong>C\u1ea5p 5<\/strong> (3 v\u1ea1ch h\u01b0\u1edbng t\u00e2m): th\u00e9p cacbon trung b\u00ecnh, \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u 120.000 psi, l\u00e0 l\u1ef1a ch\u1ecdn m\u1eb7c \u0111\u1ecbnh cho m\u00e1y m\u00f3c v\u00e0 h\u1ea7u h\u1ebft c\u00e1c k\u1ebft n\u1ed1i th\u00e9p k\u1ebft c\u1ea5u<\/li>\n<li><strong>C\u1ea5p 8<\/strong> (6 v\u1ea1ch h\u01b0\u1edbng t\u00e2m): th\u00e9p h\u1ee3p kim, t\u1ed1i thi\u1ec3u 150.000 psi, y\u00eau c\u1ea7u cho \u00f4 t\u00f4, thi\u1ebft b\u1ecb n\u1eb7ng v\u00e0 c\u00e1c k\u1ebft n\u1ed1i ch\u1ecbu t\u1ea3i l\u1edbn<\/li>\n<li><strong>T\u01b0\u01a1ng \u0111\u01b0\u01a1ng h\u1ec7 m\u00e9t ISO:<\/strong> 8.8 \u2248 C\u1ea5p 5; 10.9 \u2248 C\u1ea5p 8; 12.9 v\u01b0\u1ee3t C\u1ea5p 8 v\u1edbi t\u1ed1i thi\u1ec3u 177.000 psi<\/li>\n<\/ul>\n<p><strong>Bu l\u00f4ng m\u1eb7t b\u00edch<\/strong> th\u00eam m\u1ed9t v\u00f2ng \u0111\u1ec7m li\u1ec1n d\u01b0\u1edbi \u0111\u1ea7u, ph\u00e2n b\u1ed5 t\u1ea3i tr\u1ecdng ch\u1ecbu l\u1ef1c l\u00ean di\u1ec7n t\u00edch l\u1edbn h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n v\u00f2ng \u0111\u1ec7m r\u1eddi. Ti\u00eau chu\u1ea9n trong h\u1ec7 th\u1ed1ng treo v\u00e0 \u1ed1ng x\u1ea3 \u00f4 t\u00f4, n\u01a1i kh\u00f4ng ch\u1ea5p nh\u1eadn r\u01a1i v\u00f2ng \u0111\u1ec7m trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p.<\/p>\n<h3>Bu l\u00f4ng xe ch\u1edf h\u00e0ng<\/h3>\n<p><strong>Bu l\u00f4ng xe<\/strong> c\u00f3 \u0111\u1ea7u tr\u00f2n nh\u1eb5n v\u00e0 vai vu\u00f4ng d\u01b0\u1edbi \u0111\u1ea7u gi\u00fap b\u00e1m v\u00e0o g\u1ed7 ho\u1eb7c l\u1ed7 vu\u00f4ng \u0111\u1ed9t tr\u00ean kim lo\u1ea1i, ng\u0103n kh\u00f4ng cho bu l\u00f4ng xoay khi si\u1ebft \u0111ai \u1ed1c. Kh\u00f4ng c\u1ea7n c\u1edd l\u00ea \u1edf ph\u00eda \u0111\u1ea7u bu l\u00f4ng.<\/p>\n<p>\u1ee8ng d\u1ee5ng ch\u00ednh: x\u00e2y d\u1ef1ng s\u00e0n, khung b\u1ebfn t\u00e0u, k\u1ebft n\u1ed1i g\u1ed7, thi\u1ebft b\u1ecb s\u00e2n ch\u01a1i. Bu l\u00f4ng c\u1ed5 vu\u00f4ng m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng 3\/8\u2033 \u00d7 3.5\u2033 l\u00e0 ti\u00eau chu\u1ea9n cho k\u1ebft n\u1ed1i thanh \u0111\u1ee1 s\u00e0n g\u1ed7 x\u1eed l\u00fd theo IRC R507. M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng (t\u1ed1i thi\u1ec3u 1,7 oz\/ft\u00b2 theo ASTM A153) l\u00e0 b\u1eaft bu\u1ed9c khi ti\u1ebfp x\u00fac v\u1edbi g\u1ed7 x\u1eed l\u00fd ACQ \u2014 l\u1edbp m\u1ea1 k\u1ebdm th\u00f4ng th\u01b0\u1eddng s\u1ebd b\u1ecb \u0103n m\u00f2n ch\u1ec9 sau m\u1ed9t \u0111\u1ebfn hai m\u00f9a.<\/p>\n<h3>Bu l\u00f4ng m\u1eaft v\u00e0 ph\u1ee5 ki\u1ec7n n\u00e2ng h\u1ea1<\/h3>\n<p><strong>\u1ed1c m\u1eaft<\/strong> c\u00f3 v\u00f2ng tr\u00f2n \u1edf m\u1ed9t \u0111\u1ea7u thay v\u00ec \u0111\u1ea7u bu l\u00f4ng. D\u00f9ng \u0111\u1ec3 n\u00e2ng h\u1ea1, l\u1eafp \u0111\u1eb7t d\u00e2y c\u00e1p v\u00e0 m\u00f3c n\u1ed1i. <strong>Quy t\u1eafc thi\u1ebft k\u1ebf quan tr\u1ecdng:<\/strong> kh\u00f4ng bao gi\u1edd s\u1eed d\u1ee5ng bu l\u00f4ng m\u1eaft kh\u00f4ng vai cho t\u1ea3i tr\u1ecdng g\u00f3c. B\u1ea3ng gi\u1ea3m t\u1ea3i c\u1ee7a ASME B30.26 r\u1ea5t c\u1ee5 th\u1ec3: m\u1ed9t bu l\u00f4ng m\u1eaft r\u00e8n 1\/2\u2033 c\u00f3 t\u1ea3i tr\u1ecdng th\u1eb3ng \u0111\u1ee9ng 1.500 lb gi\u1ea3m xu\u1ed1ng c\u00f2n 530 lb khi t\u1ea3i nghi\u00eang 45\u00b0. S\u1eed d\u1ee5ng <strong>v\u00f2ng n\u00e2ng xoay<\/strong> ho\u1eb7c bu l\u00f4ng m\u1eaft m\u00e1y m\u00f3c cho c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 g\u00f3c t\u1ea3i kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o \u2014 ch\u00fang xoay t\u1ef1 do v\u00e0 gi\u1eef nguy\u00ean t\u1ea3i tr\u1ecdng \u0111\u1ecbnh m\u1ee9c b\u1ea5t k\u1ec3 h\u01b0\u1edbng t\u1ea3i.<\/p>\n<h3>Bu l\u00f4ng m\u00f3c neo<\/h3>\n<p><strong>Bu l\u00f4ng neo<\/strong> ch\u00f4n trong b\u00ea t\u00f4ng ho\u1eb7c x\u00e2y g\u1ea1ch \u0111\u1ec3 t\u1ea1o \u0111i\u1ec3m li\u00ean k\u1ebft cho c\u1ed9t th\u00e9p k\u1ebft c\u1ea5u, b\u1ea3n \u0111\u1ebf v\u00e0 b\u1ec7 thi\u1ebft b\u1ecb. Hai lo\u1ea1i ch\u00ednh:<\/p>\n<ul>\n<li><strong>\u0110\u1eb7t s\u1eb5n trong b\u00ea t\u00f4ng (bu l\u00f4ng L, bu l\u00f4ng J, \u0111inh \u0111\u1ea7u):<\/strong> \u0111\u1eb7t tr\u01b0\u1edbc khi \u0111\u1ed5 b\u00ea t\u00f4ng. T\u1ea3i tr\u1ecdng ph\u00e1t tri\u1ec3n th\u00f4ng qua \u0111\u1ed9 s\u00e2u ch\u00f4n, h\u00ecnh d\u1ea1ng m\u00f3c v\u00e0 l\u1ef1c \u00e9p l\u00ean b\u00ea t\u00f4ng. B\u1ea3ng ch\u00f4n \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea trong ICC t\u1ea1i Ch\u01b0\u01a1ng 17 c\u1ee7a ACI 318-19 quy \u0111\u1ecbnh \u0111\u1ed9 s\u00e2u t\u1ed1i thi\u1ec3u cho thi\u1ebft k\u1ebf tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n.<\/li>\n<li><strong>L\u1eafp sau khi b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u00f4ng c\u1ee9ng (bu l\u00f4ng h\u00f3a ch\u1ea5t, bu l\u00f4ng n\u1edf, bu l\u00f4ng c\u1eaft d\u01b0\u1edbi):<\/strong> l\u1eafp \u0111\u1eb7t sau khi b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u00f4ng c\u1ee9ng. Bu l\u00f4ng h\u00f3a ch\u1ea5t (Hilti HIT-RE 500 V3, Simpson SET-3G) lu\u00f4n v\u01b0\u1ee3t tr\u1ed9i h\u01a1n bu l\u00f4ng n\u1edf c\u01a1 h\u1ecdc trong b\u00ea t\u00f4ng n\u1ee9t v\u00e0 \u1ee9ng d\u1ee5ng ch\u1ecbu \u0111\u1ed9ng \u0111\u1ea5t \u2014 ch\u00fang ph\u00e1t tri\u1ec3n t\u1ea3i tr\u1ecdng \u0111\u1ea7y \u0111\u1ee7 nh\u1edd li\u00ean k\u1ebft h\u00f3a h\u1ecdc thay v\u00ec gi\u00e3n n\u1edf c\u01a1 h\u1ecdc.<\/li>\n<\/ul>\n<p>Theo <a href=\"https:\/\/www.concrete.org\/store\/productdetail.aspx?ItemID=318U19&amp;Format=DOWNLOAD&amp;Language=English&amp;Units=US_AND_METRIC\" target=\"_blank\" rel=\"noopener\">ACI 318-19 Ch\u01b0\u01a1ng 17<\/a>, gi\u00e1 tr\u1ecb thi\u1ebft k\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n c\u1ee7a b\u00ea t\u00f4ng (f\u2019c), kho\u1ea3ng c\u00e1ch m\u00e9p v\u00e0 b\u00ea t\u00f4ng t\u1ea1i v\u1ecb tr\u00ed bu l\u00f4ng l\u00e0 n\u1ee9t hay kh\u00f4ng n\u1ee9t.<\/p>\n<p>ASTM F1554 quy \u0111\u1ecbnh c\u1ea5p v\u1eadt li\u1ec7u bu l\u00f4ng neo: C\u1ea5p 36 (gi\u1edbi h\u1ea1n ch\u1ea3y 36 ksi, th\u00e9p m\u1ec1m), C\u1ea5p 55 v\u00e0 C\u1ea5p 105 (c\u01b0\u1eddng \u0111\u1ed9 cao, d\u00f9ng cho b\u1ec7 thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p ch\u1ecbu t\u1ea3i \u0111\u1ed9ng l\u1edbn).<\/p>\n<h3>M\u00f3c U<\/h3>\n<p><strong>Bu l\u00f4ng ch\u1eef U<\/strong> qu\u1ea5n quanh \u1ed1ng, \u1ed1ng th\u00e9p ho\u1eb7c ti\u1ebft di\u1ec7n k\u1ebft c\u1ea5u, si\u1ebft ch\u1eb7t b\u1eb1ng hai \u0111ai \u1ed1c \u1edf hai \u0111\u1ea7u h\u1edf. Ph\u1ed5 bi\u1ebfn trong l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng x\u1ea3, treo \u1ed1ng v\u00e0 gi\u00e1 \u0111\u1ee1 \u1ed1ng d\u1eabn, c\u0169ng nh\u01b0 gi\u1eef l\u00e1 nh\u00edp tr\u00ean h\u1ec7 th\u1ed1ng treo xe t\u1ea3i. H\u00ecnh d\u1ea1ng ren v\u00e0 c\u1ea5p \u0111\u1ed9 r\u1ea5t quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng treo: bu l\u00f4ng U c\u1ea5p 5 d\u00f9ng cho xe t\u1ea3i n\u1eb7ng l\u00e0 r\u1ee7i ro \u2014 h\u00e3y ch\u1ec9 \u0111\u1ecbnh c\u1ea5p 8 (SAE) ho\u1eb7c 10.9 (theo h\u1ec7 m\u00e9t), v\u00e0 thay m\u1edbi m\u1ed7i l\u1ea7n \u0111\u1ea1i tu h\u1ec7 th\u1ed1ng treo.<\/p>\n<p>M\u00f4-men si\u1ebft cho bu l\u00f4ng U c\u1ea5p 8, k\u00edch th\u01b0\u1edbc 1\/2\u2033 tr\u00ean c\u1ee5m l\u00e1 nh\u00edp: th\u01b0\u1eddng t\u1eeb 70\u2013100 ft-lb \u2014 lu\u00f4n x\u00e1c nh\u1eadn theo b\u1ea3ng m\u00f4-men si\u1ebft c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t xe ho\u1eb7c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u00edp cho t\u1eebng lo\u1ea1i xe c\u1ee5 th\u1ec3.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i \u1ed1c v\u00edt<\/th>\n<th>T\u00ednh n\u0103ng ch\u00ednh<\/th>\n<th>S\u1eed d\u1ee5ng ch\u00ednh<\/th>\n<th>C\u1ea5p \/ Ti\u00eau chu\u1ea9n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Bu l\u00f4ng h\u00ecnh l\u1ee5c gi\u00e1c<\/td>\n<td>\u0110\u1ea7u 6 c\u1ea1nh, \u0111a d\u1ee5ng<\/td>\n<td>M\u00e1y m\u00f3c, x\u00e2y d\u1ef1ng, k\u1ebft c\u1ea5u chung<\/td>\n<td>C\u1ea5p 5 ho\u1eb7c 8 (SAE); 8.8 ho\u1eb7c 10.9 (ISO)<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng xe<\/td>\n<td>\u0110\u1ea7u tr\u00f2n, vai vu\u00f4ng<\/td>\n<td>Khung g\u1ed7, s\u00e0n g\u1ed7, li\u00ean k\u1ebft g\u1ed7 v\u1edbi kim lo\u1ea1i<\/td>\n<td>ASTM A307, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng cho g\u1ed7 ACQ<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng m\u1eaft<\/td>\n<td>\u0110\u1ea7u v\u00f2ng cho thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1<\/td>\n<td>N\u00e2ng h\u1ea1, g\u1eafn c\u00e1p, thi\u1ebft b\u1ecb n\u00e2ng<\/td>\n<td>ASME B30.26<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng m\u00f3c<\/td>\n<td>\u0110\u00fac s\u1eb5n ho\u1eb7c l\u1eafp \u0111\u1eb7t sau trong b\u00ea t\u00f4ng<\/td>\n<td>B\u1ea3n \u0111\u1ebf k\u1ebft c\u1ea5u, \u0111\u1ec7m thi\u1ebft b\u1ecb<\/td>\n<td>ASTM F1554 C\u1ea5p 36 \/ 55 \/ 105<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng U<\/td>\n<td>H\u00ecnh ch\u1eef U v\u1edbi 2 \u0111ai \u1ed1c<\/td>\n<td>Gi\u00e1 \u0111\u1ee1 \u1ed1ng, g\u1eafn \u1ed1ng x\u1ea3, treo<\/td>\n<td>C\u1ea5p 8 \/ ISO 10.9 cho h\u1ec7 treo<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng m\u1eb7t b\u00edch<\/td>\n<td>M\u1eb7t b\u00edch \u0111\u1ec7m t\u00edch h\u1ee3p<\/td>\n<td>\u00d4 t\u00f4, b\u1ea5t c\u1ee9 n\u01a1i n\u00e0o v\u00f2ng \u0111\u1ec7m r\u01a1i g\u00e2y nguy hi\u1ec3m<\/td>\n<td>SAE C\u1ea5p 8 ho\u1eb7c ISO 10.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u1ee8ng d\u1ee5ng c\u00f4ng nghi\u1ec7p c\u1ee7a v\u00edt v\u00e0 bu l\u00f4ng<\/h2>\n<p><strong>M\u00f4i tr\u01b0\u1eddng \u1ee9ng d\u1ee5ng quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn ch\u1ed1t: v\u1eadt li\u1ec7u, h\u01b0\u1edbng t\u1ea3i, nhi\u1ec7t \u0111\u1ed9 v\u00e0 ti\u1ebfp x\u00fac h\u00f3a ch\u1ea5t \u0111\u1ec1u x\u00e1c \u0111\u1ecbnh s\u1ef1 k\u1ebft h\u1ee3p v\u00edt v\u00e0 bu l\u00f4ng ph\u00f9 h\u1ee3p.<\/strong><\/p>\n<h3>K\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng v\u00e0 k\u1ebft c\u1ea5u<\/h3>\n<p>Ch\u1ed1t k\u1ebft c\u1ea5u trong x\u00e2y d\u1ef1ng ph\u1ea3i tu\u00e2n th\u1ee7 quy chu\u1ea9n. \u0110\u1ed1i v\u1edbi khung g\u1ed7, v\u00edt th\u1ea1ch cao th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb k\u1ebft c\u1ea5u c\u00f4ng b\u1ed1 v\u00e0 b\u1ecb c\u1ea5m s\u1eed d\u1ee5ng trong c\u00e1c li\u00ean k\u1ebft k\u1ebft c\u1ea5u \u0111\u01b0\u1ee3c ph\u00e9p. V\u00edt k\u1ebft c\u1ea5u \u0111\u01b0\u1ee3c ICC-ES ph\u00ea duy\u1ec7t c\u00f4ng b\u1ed1 gi\u00e1 tr\u1ecb c\u1eaft v\u00e0 r\u00fat \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra theo <a href=\"https:\/\/www.astm.org\/f1575_f1575m-03r17.html\" target=\"_blank\" rel=\"noopener\">Ti\u00eau chu\u1ea9n ASTM F1575<\/a> \u2014 gi\u00e1 tr\u1ecb m\u00e0 k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong t\u00ednh to\u00e1n xin ph\u00e9p x\u00e2y d\u1ef1ng.<\/p>\n<p>\u0110\u1ed1i v\u1edbi neo b\u00ea t\u00f4ng, thi\u1ebft k\u1ebf bu l\u00f4ng neo tu\u00e2n theo ACI 318-19. C\u00e1c th\u00f4ng s\u1ed1 thi\u1ebft k\u1ebf c\u1ea7n thi\u1ebft: c\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu n\u00e9n b\u00ea t\u00f4ng (f\u2019c, th\u01b0\u1eddng l\u00e0 3.000\u20134.000 psi), \u0111\u1ed9 s\u00e2u ch\u00f4n, kho\u1ea3ng c\u00e1ch m\u00e9p v\u00e0 ph\u00e2n lo\u1ea1i thi\u1ebft k\u1ebf \u0111\u1ed9ng \u0111\u1ea5t. Ch\u00f4n bu l\u00f4ng neo sai trong v\u00f9ng \u0111\u1ed9ng \u0111\u1ea5t m\u1ea1nh s\u1ebd l\u00e0m b\u1ea3n \u0111\u1ebf b\u1ecb d\u1ecbch chuy\u1ec3n \u2014 m\u1ed9t d\u1ea1ng h\u1ecfng h\u00f3c c\u00f3 h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng \u0111\u1ebfn an to\u00e0n t\u00ednh m\u1ea1ng.<\/p>\n<p>Kh\u00e1m ph\u00e1 <a href=\"https:\/\/productionscrews.com\/vi\/\" target=\"_blank\">danh m\u1ee5c v\u00edt s\u1ea3n xu\u1ea5t cho \u1ee9ng d\u1ee5ng x\u00e2y d\u1ef1ng c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0111\u1ec3 t\u00ecm c\u00e1c lo\u1ea1i ch\u1ed1t k\u1ebft c\u1ea5u c\u00f3 gi\u00e1 tr\u1ecb t\u1ea3i \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cho c\u00e1c d\u1ef1 \u00e1n tu\u00e2n th\u1ee7 quy chu\u1ea9n.<\/p>\n<h3>S\u1ea3n xu\u1ea5t \u00d4 t\u00f4 v\u00e0 H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h3>\n<p>D\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p \u00f4 t\u00f4 ti\u00eau th\u1ee5 h\u00e0ng tri\u1ec7u ch\u1ed1t m\u1ed7i ng\u00e0y. S\u1ef1 chuy\u1ec3n \u0111\u1ed5i to\u00e0n ng\u00e0nh t\u1eeb \u0111\u1ea7u v\u00edt Phillips sang Torx v\u00e0o nh\u1eefng n\u0103m 1990 \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi t\u1ef1 \u0111\u1ed9ng h\u00f3a l\u1eafp r\u00e1p: \u0110\u1ea7u Torx \u00edt b\u1ecb tr\u01b0\u1ee3t h\u01a1n Phillips, cho ph\u00e9p robot duy tr\u00ec m\u00f4-men xo\u1eafn \u1ed5n \u0111\u1ecbnh qua h\u00e0ng tri\u1ec7u chu k\u1ef3 m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn \u0111\u1ed5i do m\u00f2n \u0111\u1ea7u v\u00edt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u00e1 tr\u1ecb m\u00f4-men cu\u1ed1i c\u00f9ng.<\/p>\n<p>Ch\u1ed1t h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng ho\u00e0n to\u00e0n kh\u00e1c. Ph\u1ee5 ki\u1ec7n AN (Kh\u00f4ng qu\u00e2n\/H\u1ea3i qu\u00e2n), MS (Ti\u00eau chu\u1ea9n Qu\u00e2n s\u1ef1), v\u00e0 NAS (Ti\u00eau chu\u1ea9n H\u00e0ng kh\u00f4ng Qu\u1ed1c gia) \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 v\u1eadt li\u1ec7u m\u00e0 ph\u1ee5 ki\u1ec7n d\u00e2n d\u1ee5ng kh\u00f4ng bao gi\u1edd \u0111\u1ea1t \u0111\u01b0\u1ee3c. Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1ea1t chu\u1ea9n AS9100 l\u00e0 b\u1eaft bu\u1ed9c \u2014 m\u1ed9t s\u1ef1 thay th\u1ebf kh\u00f4ng \u0111\u01b0\u1ee3c ghi nh\u1eadn c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t Ch\u1ec9 th\u1ecb \u0110\u1ea3m b\u1ea3o An to\u00e0n bay c\u1ee7a C\u1ee5c H\u00e0ng kh\u00f4ng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn to\u00e0n b\u1ed9 lo\u1ea1i m\u00e1y bay. Ch\u1ed1t Titanium Ti-6Al-4V d\u00f9ng trong k\u1ebft c\u1ea5u khung m\u00e1y bay c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o t\u01b0\u01a1ng \u0111\u01b0\u01a1ng th\u00e9p c\u1ea5p 8 v\u1edbi ch\u1ec9 kho\u1ea3ng 43% tr\u1ecdng l\u01b0\u1ee3ng.<\/p>\n<h3>\u0110i\u1ec7n t\u1eed v\u00e0 S\u1ea3n ph\u1ea9m Ti\u00eau d\u00f9ng<\/h3>\n<p>L\u1eafp r\u00e1p \u0111i\u1ec7n t\u1eed s\u1eed d\u1ee5ng ch\u1ed1t mini \u2014 v\u00edt m\u00e1y M1.6 \u0111\u1ebfn M4, v\u00edt t\u1ea1o ren v\u00e0o ch\u00e2n nh\u1ef1a, v\u00e0 gi\u1ea3i ph\u00e1p \u0111ai \u1ed1c gi\u1eef c\u1ed1 \u0111\u1ecbnh \u0111\u1ec3 d\u1ec5 b\u1ea3o tr\u00ec. Th\u00f4ng s\u1ed1 m\u00f4-men xo\u1eafn \u1edf \u0111\u00e2y r\u1ea5t th\u1ea5p: v\u00edt M2 v\u00e0o ch\u00e8n \u0111\u1ed3ng th\u01b0\u1eddng \u0111\u1ea1t m\u00f4-men 0.15\u20130.25 N\u00b7m. H\u1ecfng ren l\u00e0 l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi ng\u01b0\u1eddi l\u1eafp r\u00e1p v\u1eb7n tay m\u00e0 kh\u00f4ng d\u00f9ng d\u1ee5ng c\u1ee5 \u0111o m\u00f4-men chu\u1ea9n.<\/p>\n<p>Vi\u1ec7c ti\u00eau chu\u1ea9n h\u00f3a r\u1ed9ng r\u00e3i c\u00e1c d\u1ea1ng ren v\u00edt v\u00e0 bu l\u00f4ng gi\u00fap chu\u1ed7i cung \u1ee9ng to\u00e0n c\u1ea7u tr\u1edf n\u00ean kh\u1ea3 thi b\u1eaft ngu\u1ed3n t\u1eeb <a href=\"https:\/\/en.wikipedia.org\/wiki\/Bolt_(fastener)\" target=\"_blank\" rel=\"noopener\">ISO 261 (ren h\u1ec7 m\u00e9t) v\u00e0 ANSI B1.1 (ren h\u1ec7 inch th\u1ed1ng nh\u1ea5t)<\/a> \u2014 m\u1ed9t n\u1ed7 l\u1ef1c ph\u1ed1i h\u1ee3p \u0111\u00e3 gi\u1ea3m h\u00e0ng ngh\u00ecn ti\u00eau chu\u1ea9n ren khu v\u1ef1c xu\u1ed1ng c\u00f2n hai nh\u00f3m ch\u00ednh trong th\u1ebf k\u1ef7 20.<\/p>\n<hr \/>\n<h2>C\u00e1ch ch\u1ecdn v\u00edt ho\u1eb7c bu l\u00f4ng ph\u00f9 h\u1ee3p<\/h2>\n<p><strong>Ch\u1ecdn ch\u1ed1t ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u n\u1ec1n, h\u01b0\u1edbng t\u1ea3i, m\u00f4i tr\u01b0\u1eddng v\u00e0 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn l\u1eafp \u0111\u1eb7t \u2014 theo th\u1ee9 t\u1ef1 \u0111\u00f3.<\/strong><\/p>\n<p>H\u1ea7u h\u1ebft c\u00e1c l\u1ed7i ch\u1ecdn ch\u1ed1t \u0111\u1ec1u b\u1eaft ngu\u1ed3n t\u1eeb vi\u1ec7c ch\u1ecdn sai nh\u00f3m tr\u01b0\u1edbc khi xem x\u00e9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. H\u00e3y ch\u1ecdn \u0111\u00fang nh\u00f3m tr\u01b0\u1edbc ti\u00ean.<\/p>\n<h3>Ch\u1ecdn v\u1eadt li\u1ec7u, c\u1ea5p v\u00e0 l\u1edbp ph\u1ee7<\/h3>\n<p>M\u00f4i tr\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh l\u1edbp ph\u1ee7 tr\u01b0\u1edbc khi c\u1ea5p quy\u1ebft \u0111\u1ecbnh lo\u1ea1i th\u00e9p:<\/p>\n<ul>\n<li><strong>\u0110i\u1ec1u ki\u1ec7n trong nh\u00e0, kh\u00f4 r\u00e1o:<\/strong> th\u00e9p m\u1ea1 k\u1ebdm (m\u1ea1 \u0111i\u1ec7n) theo ASTM B633 SC1 l\u00e0 \u0111\u1ee7. L\u1edbp n\u00e0y cung c\u1ea5p kho\u1ea3ng 0.2 mil k\u1ebdm \u2014 \u0111\u1ee7 cho m\u00f4i tr\u01b0\u1eddng trong nh\u00e0 ki\u1ec3m so\u00e1t kh\u00f4ng c\u00f3 \u0111\u1ed9 \u1ea9m ho\u1eb7c h\u00f3a ch\u1ea5t.<\/li>\n<li><strong>Ngo\u00e0i tr\u1eddi, g\u1ed7 x\u1eed l\u00fd, ho\u1eb7c \u0111\u1ed9 \u1ea9m cao:<\/strong> m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng (HDG) theo ASTM A153, ho\u1eb7c th\u00e9p kh\u00f4ng g\u1ec9 (t\u1ed1i thi\u1ec3u lo\u1ea1i 304). K\u1ebdm m\u1ea1 \u0111i\u1ec7n ti\u00eau chu\u1ea9n b\u1ecb \u0103n m\u00f2n trong v\u00f2ng hai \u0111\u1ebfn ba m\u00f9a khi ti\u1ebfp x\u00fac v\u1edbi g\u1ed7 x\u1eed l\u00fd ACQ. HDG cung c\u1ea5p h\u01a1n 1.7 oz\/ft\u00b2 k\u1ebdm; th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n lo ng\u1ea1i v\u1ec1 \u0103n m\u00f2n.<\/li>\n<li><strong>Ti\u1ebfp x\u00fac n\u01b0\u1edbc bi\u1ec3n ho\u1eb7c m\u00f4i tr\u01b0\u1eddng bi\u1ec3n:<\/strong> t\u1ed1i thi\u1ec3u th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 316. Molypden th\u00eam v\u00e0o 316 so v\u1edbi 304 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u0111i\u1ec3m trong m\u00f4i tr\u01b0\u1eddng gi\u00e0u clorua.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao (\u1ed1ng x\u1ea3, l\u00f2, l\u00f2 nung tr\u00ean 800\u00b0F):<\/strong> h\u1ee3p kim ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao (Inconel 625, A286) ho\u1eb7c t\u1ed1i thi\u1ec3u l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 430. Bu l\u00f4ng th\u00e9p cacbon \u1edf nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh tr\u00ean 800\u00b0F b\u1ecb oxy h\u00f3a nhanh ch\u00f3ng v\u00e0 m\u1ea5t l\u1ef1c si\u1ebft ban \u0111\u1ea7u, g\u00e2y l\u1ecfng m\u1ed1i n\u1ed1i trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>C\u1ea5p \u0111\u1ed9 (SAE)<\/th>\n<th>T\u01b0\u01a1ng \u0111\u01b0\u01a1ng ISO<\/th>\n<th>\u0110\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u (psi)<\/th>\n<th>S\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u1ea5p 2<\/td>\n<td>\u2014<\/td>\n<td>74,000<\/td>\n<td>Li\u00ean k\u1ebft nh\u1eb9 kh\u00f4ng k\u1ebft c\u1ea5u<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea5p 5<\/td>\n<td>8.8<\/td>\n<td>120,000<\/td>\n<td>M\u00e1y m\u00f3c th\u00f4ng d\u1ee5ng, k\u1ebft c\u1ea5u th\u00e9p<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea5p 8<\/td>\n<td>10.9<\/td>\n<td>150,000<\/td>\n<td>\u00d4 t\u00f4, thi\u1ebft b\u1ecb n\u1eb7ng, an to\u00e0n quan tr\u1ecdng<\/td>\n<\/tr>\n<tr>\n<td>\u2014<\/td>\n<td>12.9<\/td>\n<td>177,000<\/td>\n<td>\u1ee8ng su\u1ea5t cao, g\u1ea7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, t\u1ea3i tr\u1ecdng c\u1ef1c l\u1edbn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>K\u00edch th\u01b0\u1edbc, b\u01b0\u1edbc ren v\u00e0 y\u00eau c\u1ea7u t\u1ea3i tr\u1ecdng<\/h3>\n<p>\u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u ho\u1eb7c c\u01a1 kh\u00ed n\u00e0o, ba th\u00f4ng s\u1ed1 quan tr\u1ecdng:<\/p>\n<ol>\n<li><strong>Di\u1ec7n t\u00edch ch\u1ecbu k\u00e9o:<\/strong> ti\u1ebft di\u1ec7n hi\u1ec7u qu\u1ea3 ch\u1ecbu t\u1ea3i k\u00e9o. \u0110\u1ed1i v\u1edbi ren UNC: <code>A_t = 0.7854 \u00d7 (d \u2212 0.9743\/n)\u00b2<\/code> trong \u0111\u00f3 d = \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a, n = s\u1ed1 ren tr\u00ean m\u1ed9t inch.<\/li>\n<li><strong>T\u1ea3i ki\u1ec3m ch\u1ee9ng:<\/strong> kho\u1ea3ng 85\u201392% \u0111\u1ed9 b\u1ec1n k\u00e9o t\u00f9y theo c\u1ea5p \u0111\u1ed9. Bu l\u00f4ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ea3y d\u1ebbo khi si\u1ebft m\u00f4-men \u2014 t\u1ea3i ki\u1ec3m ch\u1ee9ng l\u00e0 gi\u1edbi h\u1ea1n thi\u1ebft k\u1ebf.<\/li>\n<li><strong>L\u1ef1c si\u1ebft y\u00eau c\u1ea7u:<\/strong> th\u01b0\u1eddng l\u00e0 75% t\u1ea3i ki\u1ec3m ch\u1ee9ng \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ed1i n\u1ed1i ch\u1ecbu t\u1ea3i \u0111\u1ed9ng; 65\u201370% \u0111\u1ed1i v\u1edbi m\u1ed1i n\u1ed1i ch\u1ec9 ch\u1ecbu t\u1ea3i t\u0129nh.<\/li>\n<\/ol>\n<p>Tham kh\u1ea3o th\u1ef1c t\u1ebf: Bu l\u00f4ng c\u1ea5p 5 1\/4\u2033-20 cung c\u1ea5p kho\u1ea3ng 2.400 lb t\u1ea3i ki\u1ec3m ch\u1ee9ng; 3\/8\u2033-16 kho\u1ea3ng 5.700 lb. \u0110\u00e2y l\u00e0 l\u1ef1c m\u00e0 t\u1ea1i \u0111\u00f3 b\u1eaft \u0111\u1ea7u xu\u1ea5t hi\u1ec7n bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n \u2014 kh\u00f4ng ph\u1ea3i t\u1ea3i l\u00e0m vi\u1ec7c, t\u1ea3i l\u00e0m vi\u1ec7c c\u00f3 th\u00eam h\u1ec7 s\u1ed1 an to\u00e0n.<\/p>\n<h3>Nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h3>\n<p><strong>1. Tr\u1ed9n l\u1eabn ren h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 inch.<\/strong> Bu l\u00f4ng M8 (\u0111\u01b0\u1eddng k\u00ednh 8mm, b\u01b0\u1edbc ren 1,25mm) v\u00e0 bu l\u00f4ng 5\/16\u2033-18 c\u00f3 k\u00edch th\u01b0\u1edbc g\u1ea7n gi\u1ed1ng nhau \u0111\u1ebfn m\u1ee9c c\u00f3 th\u1ec3 v\u1eb7n v\u00e0o nhau 1\u20132 v\u00f2ng tr\u01b0\u1edbc khi b\u1ecb ch\u00e9o ren v\u0129nh vi\u1ec5n. Lu\u00f4n x\u00e1c nh\u1eadn lo\u1ea1i ren v\u00e0 b\u01b0\u1edbc ren tr\u01b0\u1edbc khi v\u1eb7n b\u1ea5t k\u1ef3 ch\u1ed1t n\u00e0o v\u00e0o chi ti\u1ebft m\u1edbi.<\/p>\n<p><strong>2. Si\u1ebft l\u1ef1c d\u01b0\u1edbi m\u1ee9c quy \u0111\u1ecbnh v\u00ec \u201can to\u00e0n\u201d.<\/strong> H\u1ea7u h\u1ebft c\u00e1c s\u1ef1 c\u1ed1 v\u1ec1 ch\u1ed1t trong th\u1ef1c t\u1ebf \u0111\u1ec1u do si\u1ebft l\u1ef1c d\u01b0\u1edbi m\u1ee9c quy \u0111\u1ecbnh, kh\u00f4ng ph\u1ea3i qu\u00e1 m\u1ee9c. M\u1ed9t bu-l\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft \u0111\u00fang l\u1ef1c s\u1ebd gi\u00e3n nh\u1eb9 \u2014 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u00f2 xo, duy tr\u00ec l\u1ef1c k\u1eb9p qua rung \u0111\u1ed9ng v\u00e0 chu k\u1ef3 nhi\u1ec7t. Bu-l\u00f4ng si\u1ebft d\u01b0\u1edbi m\u1ee9c s\u1ebd b\u1ecb m\u1ecfi sau h\u00e0ng ngh\u00ecn chu k\u1ef3 thay v\u00ec h\u00e0ng tri\u1ec7u.<\/p>\n<p><strong>3. S\u1eed d\u1ee5ng th\u00f4ng s\u1ed1 si\u1ebft l\u1ef1c c\u00f3 b\u00f4i tr\u01a1n cho \u0111i\u1ec1u ki\u1ec7n kh\u00f4 (ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i).<\/strong> C\u00e1c th\u00f4ng s\u1ed1 si\u1ebft l\u1ef1c \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 gi\u1ea3 \u0111\u1ecbnh \u0111i\u1ec1u ki\u1ec7n ma s\u00e1t c\u1ee5 th\u1ec3 \u2014 ho\u1eb7c kh\u00f4 ho\u1eb7c \u0111\u00e3 b\u00f4i tr\u01a1n b\u1eb1ng s\u1ea3n ph\u1ea9m nh\u1ea5t \u0111\u1ecbnh. \u00c1p d\u1ee5ng th\u00f4ng s\u1ed1 b\u00f4i tr\u01a1n cho \u0111i\u1ec1u ki\u1ec7n kh\u00f4 s\u1ebd l\u00e0m si\u1ebft l\u1ef1c d\u01b0\u1edbi m\u1ee9c cho m\u1ed1i n\u1ed1i t\u1eeb 30\u201340%. H\u00e3y x\u00e1c nh\u1eadn gi\u1ea3 \u0111\u1ecbnh v\u1ec1 ch\u1ea5t b\u00f4i tr\u01a1n tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 b\u1ea3ng si\u1ebft l\u1ef1c n\u00e0o.<\/p>\n<p><strong>4. Thay th\u1ebf v\u00edt th\u1ea1ch cao cho \u1ee9ng d\u1ee5ng g\u1ed7 k\u1ebft c\u1ea5u.<\/strong> V\u00edt th\u1ea1ch cao \u0111\u01b0\u1ee3c t\u00f4i c\u1ee9ng v\u00e0 gi\u00f2n \u2014 ch\u00fang g\u00e3y d\u01b0\u1edbi t\u1ea3i c\u1eaft m\u00e0 kh\u00f4ng b\u00e1o tr\u01b0\u1edbc v\u00e0 kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb k\u1ebft c\u1ea5u c\u00f4ng b\u1ed1. V\u00edt k\u1ebft c\u1ea5u th\u00ec d\u1ebbo v\u00e0 \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea b\u1edfi ICC. S\u1ef1 gi\u1ed1ng nhau v\u1ec1 h\u00ecnh th\u1ee9c d\u1eabn \u0111\u1ebfn vi\u1ec7c thay th\u1ebf; s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i.<\/p>\n<p><strong>5. B\u1ecf qua \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a.<\/strong> Ch\u1ed1t inox ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi nh\u00f4m tr\u1ea7n trong m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc bi\u1ec3n s\u1ebd t\u1ea1o ra pin \u0111i\u1ec7n h\u00f3a l\u00e0m \u0103n m\u00f2n nh\u00f4m ch\u1ec9 trong m\u1ed9t m\u00f9a. H\u00e3y c\u00e1ch ly b\u1eb1ng v\u00f2ng \u0111\u1ec7m neoprene ho\u1eb7c EPDM, s\u1eed d\u1ee5ng ch\u1ed1t nh\u00f4m khi ph\u00f9 h\u1ee3p, ho\u1eb7c b\u00f4i keo ch\u1ed1ng \u0103n m\u00f2n t\u1ea1i \u0111i\u1ec3m ti\u1ebfp x\u00fac.<\/p>\n<p><img decoding=\"async\" alt=\"v\u00edt v\u00e0 bu l\u00f4ng \u2014 c\u1eadn c\u1ea3nh \u0111\u00f4i tay k\u1ef9 s\u01b0 s\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o b\u01b0\u1edbc ren \u0111\u1ec3 \u0111o ren bu l\u00f4ng so v\u1edbi b\u1ea3n v\u1ebd k\u1ef9 thu\u1eadt tr\u00ean b\u00e0n l\u00e0m vi\u1ec7c inox, \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean trong x\u01b0\u1edfng\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/06\/screw-and-bolt-howto.png\" \/><\/p>\n<hr \/>\n<h2>Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai trong c\u00f4ng ngh\u1ec7 fastening (2026 tr\u1edf \u0111i)<\/h2>\n<p><strong>Ch\u1ed1t th\u00f4ng minh v\u00e0 l\u1edbp ph\u1ee7 ti\u00ean ti\u1ebfn \u0111ang thay \u0111\u1ed5i kh\u1ea3 n\u0103ng c\u1ee7a v\u00edt v\u00e0 bu-l\u00f4ng v\u01b0\u1ee3t ra ngo\u00e0i ch\u1ee9c n\u0103ng k\u1eb9p c\u01a1 h\u1ecdc \u0111\u01a1n gi\u1ea3n.<\/strong><\/p>\n<h3>Gi\u00e1m s\u00e1t k\u1ebft c\u1ea5u v\u00e0 ch\u1ed1t th\u00f4ng minh<\/h3>\n<p>Bu-l\u00f4ng c\u1ea3m bi\u1ebfn t\u1ea3i nh\u00fang \u0111\u00e3 chuy\u1ec3n t\u1eeb nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n h\u00e0ng kh\u00f4ng sang s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p. <strong>Gi\u00e1m s\u00e1t \u0111\u1ed9 c\u0103ng bu-l\u00f4ng b\u1eb1ng s\u00f3ng si\u00eau \u00e2m<\/strong> \u0111o \u0111\u1ed9 gi\u00e3n th\u1ef1c t\u1ebf c\u1ee7a bu-l\u00f4ng qua s\u00f3ng si\u00eau \u00e2m \u2014 l\u00e0 ph\u00e9p \u0111o tr\u1ef1c ti\u1ebfp t\u1ea3i tr\u01b0\u1edbc, kh\u00f4ng ph\u1ea3i gi\u00e1n ti\u1ebfp qua l\u1ef1c si\u1ebft. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y hi\u1ec7n l\u00e0 ti\u00eau chu\u1ea9n trong l\u1eafp r\u00e1p tr\u1ee5c tua-bin gi\u00f3, n\u01a1i vi\u1ec7c ti\u1ebfp c\u1eadn \u0111\u1ec3 si\u1ebft l\u1ea1i \u0111\u1ecbnh k\u1ef3 r\u1ea5t kh\u00f3 kh\u0103n v\u00e0 s\u1ef1 c\u1ed1 m\u1ecfi bu-l\u00f4ng g\u00e2y h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng. K\u1ef9 thu\u1eadt n\u00e0y lo\u1ea1i b\u1ecf s\u1ef1 sai l\u1ec7ch \u00b130% v\u1ed1n c\u00f3 trong suy lu\u1eadn t\u1ea3i tr\u01b0\u1edbc d\u1ef1a tr\u00ean l\u1ef1c si\u1ebft.<\/p>\n<p><strong>Ch\u1ed1t g\u1eafn th\u1ebb RFID<\/strong> \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0o s\u1ea3n xu\u1ea5t h\u00e0ng kh\u00f4ng v\u00e0 \u00f4 t\u00f4 gi\u00e1 tr\u1ecb cao \u0111\u1ec3 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c t\u1eebng b\u1ed9 ph\u1eadn. Chip RFID th\u1ee5 \u0111\u1ed9ng nh\u00fang trong \u0111\u1ea7u bu-l\u00f4ng c\u00f3 th\u1ec3 l\u01b0u to\u00e0n b\u1ed9 th\u00f4ng tin s\u1ea3n xu\u1ea5t \u2014 s\u1ed1 l\u00f4 v\u1eadt li\u1ec7u, l\u1ecbch s\u1eed si\u1ebft l\u1ef1c, h\u1ed3 s\u01a1 ki\u1ec3m tra \u2014 m\u00e0 kh\u00f4ng c\u1ea7n t\u00e0i li\u1ec7u b\u00ean ngo\u00e0i. C\u1ea3 Boeing v\u00e0 Airbus \u0111\u1ec1u c\u00f3 ch\u01b0\u01a1ng tr\u00ecnh tri\u1ec3n khai t\u1eeb \u0111\u1ea7u n\u0103m 2026.<\/p>\n<h3>L\u1edbp ph\u1ee7 ti\u00ean ti\u1ebfn v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/h3>\n<p><strong>L\u1edbp ph\u1ee7 fluoropolymer (d\u1ef1a tr\u00ean PTFE)<\/strong> \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00ean ren ch\u1ed1t gi\u00fap gi\u1ea3m h\u1ec7 s\u1ed1 ma s\u00e1t xu\u1ed1ng 0,04\u20130,08, l\u00e0m gi\u1ea3m sai l\u1ec7ch l\u1ef1c si\u1ebft-to-t\u1ea3i k\u1eb9p t\u1eeb \u00b130% (th\u00e9p kh\u00f4) xu\u1ed1ng \u00b110%. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ef7 l\u1ec7 l\u1ed7i tr\u00ean d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p: sai l\u1ec7ch t\u1ea3i tr\u01b0\u1edbc nh\u1ecf h\u01a1n ngh\u0129a l\u00e0 \u00edt m\u1ed1i n\u1ed1i ph\u1ea3i si\u1ebft l\u1ea1i trong b\u1ea3o h\u00e0nh.<\/p>\n<p><strong>M\u1ea1 \u0111i\u1ec7n k\u1ebdm-niken<\/strong> (h\u00e0m l\u01b0\u1ee3ng niken 12\u201315%) \u0111ang thay th\u1ebf cadmium trong \u1ee9ng d\u1ee5ng ch\u1ed1t h\u00e0ng kh\u00f4ng sau khi c\u00f3 quy \u0111\u1ecbnh REACH v\u00e0 RoHS v\u1ec1 h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng cadmium. K\u1ebdm-niken cung c\u1ea5p hi\u1ec7u su\u1ea5t ch\u1ed1ng mu\u1ed1i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u2014 h\u01a1n 1.000 gi\u1edd \u0111\u1ebfn khi xu\u1ea5t hi\u1ec7n g\u1ec9 \u0111\u1ecf trong th\u1eed nghi\u1ec7m phun mu\u1ed1i trung t\u00ednh theo ASTM B117 \u2014 b\u1eb1ng quy tr\u00ecnh m\u1ea1 kh\u00f4ng \u0111\u1ed9c h\u1ea1i. \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n thay th\u1ebf cadmium trong ng\u00e0nh h\u00e0ng kh\u00f4ng \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong Boeing D6-17487 v\u00e0 Airbus AIMS 03-02-007.<\/p>\n<table>\n<thead>\n<tr>\n<th>C\u00f4ng ngh\u1ec7<\/th>\n<th>T\u00ecnh tr\u1ea1ng (2026)<\/th>\n<th>Ng\u00e0nh c\u00f4ng nghi\u1ec7p ch\u00ednh<\/th>\n<th>L\u1ee3i \u00edch ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u1ea3m bi\u1ebfn c\u0103ng bu l\u00f4ng si\u00eau \u00e2m<\/td>\n<td>Tri\u1ec3n khai s\u1ea3n xu\u1ea5t to\u00e0n di\u1ec7n<\/td>\n<td>N\u0103ng l\u01b0\u1ee3ng gi\u00f3, m\u00e1y m\u00f3c h\u1ea1ng n\u1eb7ng<\/td>\n<td>Lo\u1ea1i b\u1ecf s\u1ef1 kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 m\u00f4-men xo\u1eafn<\/td>\n<\/tr>\n<tr>\n<td>V\u00edt t\u00edch h\u1ee3p RFID<\/td>\n<td>Th\u1eed nghi\u1ec7m h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u00e1p d\u1ee5ng s\u1edbm<\/td>\n<td>H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, s\u1ea3n xu\u1ea5t gi\u00e1 tr\u1ecb cao<\/td>\n<td>Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c v\u00f2ng \u0111\u1eddi \u0111\u1ea7y \u0111\u1ee7 cho t\u1eebng bul\u00f4ng, \u1ed1c v\u00edt<\/td>\n<\/tr>\n<tr>\n<td>M\u1ea1 k\u1ebdm-niken<\/td>\n<td>S\u1ea3n xu\u1ea5t \u0111\u1ea1i tr\u00e0<\/td>\n<td>H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u00f4 t\u00f4<\/td>\n<td>Thay th\u1ebf cadimi, ch\u1ecbu phun mu\u1ed1i tr\u00ean 1.000 gi\u1edd<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng k\u1ebft c\u1ea5u ph\u1ee7 PTFE<\/td>\n<td>\u0110ang \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i<\/td>\n<td>D\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p \u00f4 t\u00f4<\/td>\n<td>\u0110\u1ed9 l\u1ec7ch t\u1ea3i tr\u01b0\u1edbc \u00b110% so v\u1edbi \u00b130% khi kh\u00f4<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ed1t s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00f4ng ngh\u1ec7 in 3D<\/td>\n<td>\u00c1p d\u1ee5ng s\u1edbm, th\u1ecb tr\u01b0\u1eddng ng\u00e1ch<\/td>\n<td>Nguy\u00ean m\u1eabu, m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/td>\n<td>H\u00ecnh d\u1ea1ng theo y\u00eau c\u1ea7u b\u1eb1ng titan ho\u1eb7c Inconel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa v\u00edt v\u00e0 bu l\u00f4ng l\u00e0 g\u00ec?<\/h3>\n<p><strong>V\u00edt \u0111\u01b0\u1ee3c v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u; bu l\u00f4ng \u0111i xuy\u00ean qua v\u00e0 si\u1ebft ch\u1eb7t b\u1eb1ng \u0111ai \u1ed1c.<\/strong> Ph\u00e2n bi\u1ec7t ch\u00ednh th\u1ee9c theo ASME: v\u00edt \u0103n kh\u1edbp v\u1edbi ren trong \u0111\u00e3 t\u1ea1o s\u1eb5n ho\u1eb7c t\u1ef1 t\u1ea1o ren; bu l\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111i qua l\u1ed7 tho\u00e1ng v\u00e0 si\u1ebft ch\u1eb7t b\u1eb1ng \u0111ai \u1ed1c. Trong th\u1ef1c t\u1ebf, bu l\u00f4ng th\u01b0\u1eddng c\u00f3 ph\u1ea7n th\u00e2n kh\u00f4ng ren, c\u00f2n v\u00edt th\u01b0\u1eddng \u0111\u01b0\u1ee3c ren to\u00e0n b\u1ed9. Ranh gi\u1edbi b\u1ecb m\u1edd khi bu l\u00f4ng \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o kh\u1ed1i \u0111\u00e3 taro \u2014 v\u1ec1 ch\u1ee9c n\u0103ng th\u00ec n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t v\u00edt.<\/p>\n<h3>T\u00f4i c\u00f3 th\u1ec3 d\u00f9ng bu l\u00f4ng m\u00e0 kh\u00f4ng c\u1ea7n \u0111ai \u1ed1c kh\u00f4ng?<\/h3>\n<p><strong>C\u00f3 \u2014 v\u1eb7n bu l\u00f4ng v\u00e0o l\u1ed7 \u0111\u00e3 taro s\u1ebd khi\u1ebfn n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t v\u00edt.<\/strong> \u0110i\u1ec1u n\u00e0y ph\u1ed5 bi\u1ebfn trong l\u1eafp r\u00e1p m\u00e1y m\u00f3c v\u00e0 thi\u1ebft b\u1ecb. Nh\u00e3n bu l\u00f4ng\/v\u00edt m\u00f4 t\u1ea3 \u00fd \u0111\u1ecbnh thi\u1ebft k\u1ebf, kh\u00f4ng ph\u1ea3i gi\u1edbi h\u1ea1n c\u1ee9ng v\u1ec1 c\u00e1ch s\u1eed d\u1ee5ng. Ch\u1ec9 c\u1ea7n x\u00e1c nh\u1eadn \u0111\u1ed9 \u0103n kh\u1edbp ren \u0111\u1ee7: c\u00e1c m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u 1\u00d7 \u0111\u01b0\u1eddng k\u00ednh ren trong th\u00e9p, ho\u1eb7c 1,5\u00d7 trong nh\u00f4m.<\/p>\n<h3>D\u1ea5u hi\u1ec7u Grade 5 v\u00e0 Grade 8 tr\u00ean bu l\u00f4ng c\u00f3 \u00fd ngh\u0129a g\u00ec?<\/h3>\n<p><strong>Ch\u00fang ch\u1ec9 ra gi\u1edbi h\u1ea1n b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u.<\/strong> Grade 5 (3 v\u1ea1ch h\u01b0\u1edbng t\u00e2m tr\u00ean \u0111\u1ea7u) = b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u 120.000 psi; Grade 8 (6 v\u1ea1ch h\u01b0\u1edbng t\u00e2m) = t\u1ed1i thi\u1ec3u 150.000 psi. C\u00e1c c\u1ea5p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng theo ti\u00eau chu\u1ea9n ISO l\u00e0 8.8 (\u2248 Grade 5) v\u00e0 10.9 (\u2248 Grade 8). Kh\u00f4ng bao gi\u1edd thay th\u1ebf c\u1ea5p th\u1ea5p h\u01a1n cho c\u1ea5p cao h\u01a1n trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u ho\u1eb7c an to\u00e0n \u2014 h\u00ecnh th\u1ee9c g\u1ea7n nh\u01b0 gi\u1ed1ng nhau nh\u01b0ng t\u1ea3i tr\u1ecdng ph\u00e1 h\u1ee7y kh\u00e1c bi\u1ec7t r\u1ea5t l\u1edbn.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ren th\u00f4 (UNC) v\u00e0 ren m\u1ecbn (UNF) l\u00e0 g\u00ec?<\/h3>\n<p><strong>Ren th\u00f4 l\u1eafp r\u00e1p nhanh h\u01a1n v\u00e0 ch\u1ecbu h\u01b0 h\u1ea1i t\u1ed1t h\u01a1n; ren m\u1ecbn gi\u1eef t\u1ea3i tr\u01b0\u1edbc cao h\u01a1n.<\/strong> UNC c\u00f3 \u00edt ren tr\u00ean m\u1ed7i inch \u2014 l\u1eafp r\u00e1p nhanh h\u01a1n, ch\u1ecbu \u0111\u01b0\u1ee3c h\u01b0 h\u1ea1i nh\u1ecf \u1edf ren, \u01b0u ti\u00ean d\u00f9ng trong m\u00f4i tr\u01b0\u1eddng b\u1ea9n ho\u1eb7c \u0103n m\u00f2n. UNF c\u00f3 nhi\u1ec1u ren tr\u00ean m\u1ed7i inch \u2014 l\u1ef1c k\u1eb9p cao h\u01a1n v\u1edbi c\u00f9ng m\u00f4-men xo\u1eafn, ch\u1ed1ng rung t\u1ed1t h\u01a1n. Ch\u1ecdn UNF khi: \u1ee9ng d\u1ee5ng rung li\u00ean t\u1ee5c (\u0111\u1ed9ng c\u01a1, m\u00e1y n\u00e9n), \u0111\u1ed9 d\u00e0y th\u00e0nh h\u1ea1n ch\u1ebf s\u1ed1 v\u00f2ng ren d\u01b0\u1edbi 4 v\u00f2ng \u0111\u1ea7y \u0111\u1ee7, ho\u1eb7c c\u1ea7n t\u1ea3i tr\u01b0\u1edbc t\u1ed1i \u0111a.<\/p>\n<h3>T\u1ea1i sao bu l\u00f4ng inox \u0111\u00f4i khi b\u1ecb k\u1eb9t v\u00e0 d\u00ednh ren?<\/h3>\n<p><strong>Inox b\u1ecb d\u00ednh ren khi m\u00e0ng oxit b\u1ecb ph\u00e1 h\u1ee7y trong qu\u00e1 tr\u00ecnh v\u1eb7n v\u00e0 b\u1ec1 m\u1eb7t kim lo\u1ea1i tr\u1ea7n b\u1ecb h\u00e0n l\u1ea1nh d\u01b0\u1edbi \u00e1p l\u1ef1c.<\/strong> Ch\u00ednh m\u00e0ng oxit gi\u00fap inox ch\u1ed1ng \u0103n m\u00f2n l\u1ea1i b\u1ecb ph\u00e1 h\u1ee7y b\u1edfi ma s\u00e1t ren \u2014 \u0111\u1ec3 l\u1ea1i ti\u1ebfp x\u00fac kim lo\u1ea1i tr\u1ea7n v\u1edbi nhau v\u00e0 b\u1ecb h\u00e0n l\u1ea1nh. Ph\u00f2ng tr\u00e1nh: s\u1eed d\u1ee5ng m\u1ee1 ch\u1ed1ng d\u00ednh ren (Molykote G-Rapid Plus, Never-Seez ho\u1eb7c Loctite 8009), ch\u1ecdn h\u1ee3p kim kh\u00e1c nhau cho bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c (v\u00ed d\u1ee5, bu l\u00f4ng A2 v\u1edbi \u0111ai \u1ed1c A4), ho\u1eb7c d\u00f9ng bul\u00f4ng x\u1eed l\u00fd b\u1ec1 m\u1eb7t. Khi \u0111\u00e3 b\u1ecb d\u00ednh ren, kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c b\u1eb1ng c\u00e1ch th\u00e1o ra v\u00e0 v\u1eb7n l\u1ea1i.<\/p>\n<h3>N\u00ean d\u00f9ng bu l\u00f4ng neo n\u00e0o cho b\u00ea t\u00f4ng?<\/h3>\n<p><strong>B\u1eaft \u0111\u1ea7u v\u1edbi b\u00e1o c\u00e1o ICC-ES c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t ho\u1eb7c Ch\u01b0\u01a1ng 17 c\u1ee7a ACI 318-19.<\/strong> C\u00e1c th\u00f4ng s\u1ed1 c\u1ea7n thi\u1ebft: c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n b\u00ea t\u00f4ng (f\u2019c), t\u1ea3i tr\u1ecdng thi\u1ebft k\u1ebf, \u0111\u1ed9 s\u00e2u ch\u00f4n, kho\u1ea3ng c\u00e1ch m\u00e9p v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u00ea t\u00f4ng n\u1ee9t ho\u1eb7c kh\u00f4ng n\u1ee9t. \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c th\u01b0\u01a1ng m\u1ea1i nh\u1eb9 kh\u00f4ng thi\u1ebft k\u1ebf \u2014 b\u1ec7 thi\u1ebft b\u1ecb, c\u1ed9t h\u00e0ng r\u00e0o, \u0111\u1ebf bi\u1ec3n b\u00e1o \u2014 bu l\u00f4ng n\u1edf 3\/8\u2033 ho\u1eb7c 1\/2\u2033 v\u1edbi \u0111\u1ed9 s\u00e2u ch\u00f4n 3\u20134\u2033 \u0111\u00e1p \u1ee9ng h\u1ea7u h\u1ebft t\u1ea3i tr\u1ecdng trong b\u00ea t\u00f4ng 3.000 psi. \u0110\u1ed1i v\u1edbi v\u00f9ng \u0111\u1ed9ng \u0111\u1ea5t, n\u00ean ch\u1ecdn bu l\u00f4ng h\u00f3a ch\u1ea5t (Hilti HIT-RE 500 V3 ho\u1eb7c Simpson SET-3G) thay cho bu l\u00f4ng n\u1edf \u2014 ch\u00fang gi\u1eef \u0111\u01b0\u1ee3c t\u1ea3i thi\u1ebft k\u1ebf trong b\u00ea t\u00f4ng n\u1ee9t, n\u01a1i bu l\u00f4ng n\u1edf b\u1ecb gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c.<\/p>\n<h3>Nguy\u00ean nh\u00e2n g\u00ec khi\u1ebfn bu l\u00f4ng b\u1ecb l\u1ecfng trong m\u00e1y m\u00f3c rung?<\/h3>\n<p><strong>Rung ngang v\u01b0\u1ee3t qua l\u1ef1c ma s\u00e1t t\u1ea1i b\u1ec1 m\u1eb7t \u0111\u1ea7u bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c \u2014 m\u1ed1i gh\u00e9p s\u1ebd \u201ct\u1ef1 \u0111\u1ed9ng\u201d l\u1ecfng d\u1ea7n theo th\u1eddi gian.<\/strong> Gi\u1ea3i ph\u00e1p, theo th\u1ee9 t\u1ef1 hi\u1ec7u qu\u1ea3: (1) t\u0103ng l\u1ef1c si\u1ebft ban \u0111\u1ea7u l\u00ean m\u1ee9c ch\u1ecbu t\u1ea3i ki\u1ec3m ch\u1ee9ng c\u1ee7a bu l\u00f4ng; (2) th\u00eam ph\u1ea7n t\u1eed kh\u00f3a t\u00edch c\u1ef1c \u2014 v\u00f2ng \u0111\u1ec7m kh\u00f3a n\u00eam Nord-Lock ho\u1eb7c keo kh\u00f3a ren k\u1ef5 kh\u00ed (Loctite 243 cho h\u1ea7u h\u1ebft \u1ee9ng d\u1ee5ng, 271 cho c\u1ed1 \u0111\u1ecbnh v\u0129nh vi\u1ec5n); (3) chuy\u1ec3n sang ren m\u1ecbn \u0111\u1ec3 t\u0103ng h\u1ec7 s\u1ed1 ma s\u00e1t; (4) s\u1eed d\u1ee5ng \u0111ai \u1ed1c c\u00f3 m\u00f4-men gi\u1eef (lo\u1ea1i ch\u00e8n nylon ho\u1eb7c to\u00e0n kim lo\u1ea1i ki\u1ec3u Stover). V\u00f2ng \u0111\u1ec7m kh\u00f3a ch\u1ebb ri\u00eang l\u1ebb kh\u00f4ng ng\u0103n l\u1ecfng hi\u1ec7u qu\u1ea3 \u2014 th\u1eed nghi\u1ec7m trong ph\u00f2ng th\u00ed nghi\u1ec7m cho th\u1ea5y ch\u00fang th\u1eadm ch\u00ed c\u00f3 th\u1ec3 l\u00e0m t\u0103ng xu h\u01b0\u1edbng l\u1ecfng so v\u1edbi v\u00f2ng \u0111\u1ec7m c\u1ee9ng th\u00f4ng th\u01b0\u1eddng.<\/p>\n<p><img decoding=\"async\" alt=\"v\u00edt v\u00e0 bu l\u00f4ng \u2014 g\u00f3c nh\u00ecn r\u1ed9ng ph\u00f2ng l\u01b0u tr\u1eef v\u1eadt t\u01b0 c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c khoa h\u1ecdc v\u1edbi c\u00e1c th\u00f9ng \u0111\u1ef1ng bu l\u00f4ng l\u1ee5c gi\u00e1c, v\u00edt m\u00e1y v\u00e0 bu l\u00f4ng c\u1ed5 vu\u00f4ng c\u00f3 nh\u00e3n d\u01b0\u1edbi \u00e1nh s\u00e1ng hu\u1ef3nh quang s\u00e1ng, m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t chuy\u00ean nghi\u1ec7p\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/06\/screw-and-bolt-closing.png\" \/><\/p>\n<hr \/>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>V\u00edt v\u00e0 bu l\u00f4ng kh\u00f4ng ph\u1ea3i l\u00e0 thu\u1eadt ng\u1eef thay th\u1ebf cho nhau \u2014 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p \u0103n kh\u1edbp ren, c\u01a1 h\u1ecdc m\u1ed1i gh\u00e9p v\u00e0 d\u1ea1ng h\u1ecfng l\u00e0 th\u1ef1c t\u1ebf v\u00e0 quan tr\u1ecdng. H\u00e3y x\u00e1c \u0111\u1ecbnh \u0111\u00fang nh\u00f3m tr\u01b0\u1edbc: v\u00edt hay bu l\u00f4ng, sau \u0111\u00f3 ch\u1ecdn lo\u1ea1i ph\u1ee5, c\u1ea5p \u0111\u1ed9, l\u1edbp ph\u1ee7 v\u00e0 th\u00f4ng s\u1ed1 l\u1ef1c si\u1ebft. H\u1ea7u h\u1ebft c\u00e1c l\u1ed7i v\u1ec1 bu l\u00f4ng \u0111\u1ec1u xu\u1ea5t ph\u00e1t t\u1eeb m\u1ed9t trong n\u0103m nguy\u00ean nh\u00e2n g\u1ed1c: ch\u1ecdn sai nh\u00f3m cho v\u1eadt li\u1ec7u n\u1ec1n, sai c\u1ea5p cho t\u1ea3i tr\u1ecdng, sai l\u1edbp ph\u1ee7 cho m\u00f4i tr\u01b0\u1eddng, l\u1ef1c si\u1ebft kh\u00f4ng \u0111\u00fang, ho\u1eb7c v\u1ea5n \u0111\u1ec1 k\u1eb9t ren inox kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd t\u1eeb giai \u0111o\u1ea1n thi\u1ebft k\u1ebf.<\/p>\n<p>\u0110\u1ed1i v\u1edbi mua s\u1eafm s\u1ea3n xu\u1ea5t, h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf: chu\u1ea9n h\u00f3a s\u1eed d\u1ee5ng bu l\u00f4ng l\u1ee5c gi\u00e1c c\u1ea5p 5 cho m\u00e1y m\u00f3c th\u00f4ng d\u1ee5ng, c\u1ea5p 8 cho k\u1ebft c\u1ea5u v\u00e0 \u00f4 t\u00f4, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng ho\u1eb7c inox 316 cho ngo\u00e0i tr\u1eddi v\u00e0 h\u00e0ng h\u1ea3i, v\u00e0 m\u1ed9t d\u1ea3i v\u00edt t\u1ef1 khoan \u0111\u1ea7u Torx cho t\u00f4n v\u00e0 v\u1ecf nh\u1ef1a. Nh\u01b0 v\u1eady \u0111\u00e1p \u1ee9ng 90% nhu c\u1ea7u s\u1ea3n xu\u1ea5t. Bu l\u00f4ng chuy\u00ean d\u1ee5ng \u2014 bu l\u00f4ng neo, bu l\u00f4ng m\u1eaft, v\u00edt vai, v\u00edt gi\u1eef \u2014 l\u00e0 lo\u1ea1i \u0111\u1eb7c th\u00f9 theo \u1ee9ng d\u1ee5ng; ch\u1ec9 \u0111\u1ecbnh khi h\u00ecnh h\u1ecdc m\u1ed1i gh\u00e9p ho\u1eb7c quy chu\u1ea9n y\u00eau c\u1ea7u r\u00f5 r\u00e0ng.<\/p>\n<h2>B\u00e0i vi\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/productionscrews.com\/vi\/\" target=\"_blank\">V\u00edt s\u1ea3n xu\u1ea5t: C\u00e1c lo\u1ea1i, ti\u00eau chu\u1ea9n v\u00e0 h\u01b0\u1edbng d\u1eabn t\u00ecm ngu\u1ed3n cung<\/a><\/li>\n<li><a href=\"https:\/\/productionscrews.com\/vi\/\" target=\"_blank\">Ph\u00e2n bi\u1ec7t c\u1ea5p bu l\u00f4ng l\u1ee5c gi\u00e1c: SAE c\u1ea5p 5 so v\u1edbi c\u1ea5p 8 so v\u1edbi ISO 10.9<\/a><\/li>\n<li><a href=\"https:\/\/productionscrews.com\/vi\/\" target=\"_blank\">V\u00edt t\u1ef1 khoan: So s\u00e1nh c\u1eaft ren v\u00e0 t\u1ea1o ren<\/a><\/li>\n<li><a href=\"https:\/\/productionscrews.com\/vi\/\" target=\"_blank\">L\u1edbp ph\u1ee7 bu l\u00f4ng: K\u1ebdm, m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, inox v\u00e0 PTFE<\/a><\/li>\n<li><a href=\"https:\/\/productionscrews.com\/vi\/\" target=\"_blank\">Bu l\u00f4ng neo cho b\u00ea t\u00f4ng: H\u01b0\u1edbng d\u1eabn ch\u1ecdn lo\u1ea1i ch\u00f4n s\u1eb5n so v\u1edbi l\u1eafp sau<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i ch\u1ed1t \u0111\u1ec1u gi\u1ed1ng nhau \u2014 t\u00ecm hi\u1ec3u nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa v\u00edt v\u00e0 bu l\u00f4ng, s\u00e1u lo\u1ea1i ch\u00ednh c\u1ee7a m\u1ed7i lo\u1ea1i, c\u00e1ch l\u1ef1a ch\u1ecdn c\u1ea5p \u0111\u1ed9 v\u00e0 l\u1edbp ph\u1ee7 ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u1ee7a b\u1ea1n, c\u00f9ng n\u0103m sai l\u1ea7m ph\u1ed5 bi\u1ebfn g\u00e2y ra h\u1ea7u h\u1ebft c\u00e1c s\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c ch\u1ed1t trong s\u1ea3n xu\u1ea5t v\u00e0 x\u00e2y d\u1ef1ng.<\/p>","protected":false},"author":1,"featured_media":4843,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4847","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-screws-flange-tutorial"],"_links":{"self":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/4847","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/comments?post=4847"}],"version-history":[{"count":0,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/4847\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media\/4843"}],"wp:attachment":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media?parent=4847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/categories?post=4847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/tags?post=4847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}