{"id":3611,"date":"2026-05-03T02:50:53","date_gmt":"2026-05-03T02:50:53","guid":{"rendered":"https:\/\/productionscrews.com\/define-screw\/"},"modified":"2026-05-03T02:51:42","modified_gmt":"2026-05-03T02:51:42","slug":"define-screw","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/define-screw\/","title":{"rendered":"\u0110\u1ecbnh ngh\u0129a V\u00edt: H\u01b0\u1edbng D\u1eabn K\u1ef9 Thu\u1eadt &amp; \u1ee8ng D\u1ee5ng To\u00e0n Di\u1ec7n"},"content":{"rendered":"<p class=\"direct-answer\"><strong>V\u00edt l\u00e0 m\u1ed9t ch\u1ed1t h\u00ecnh tr\u1ee5 c\u00f3 ren xo\u1eafn \u1ed1c, chuy\u1ec3n \u0111\u1ed5i m\u00f4-men xo\u1eafn quay th\u00e0nh l\u1ef1c k\u1eb9p d\u1ecdc tr\u1ee5c, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 li\u00ean k\u1ebft, c\u1ed1 \u0111\u1ecbnh ho\u1eb7c truy\u1ec1n \u0111\u1ed9ng c\u01a1 h\u1ecdc.<\/strong><\/p>\n<p><img decoding=\"async\" alt=\"\u0111\u1ecbnh ngh\u0129a v\u00edt \u2014 minh h\u1ecda ch\u00ednh cho th\u1ea5y c\u00e1c lo\u1ea1i v\u00edt kh\u00e1c nhau \u0111\u01b0\u1ee3c b\u00e0y tr\u00ean b\u00e0n th\u1ee3 c\u01a1 kh\u00ed d\u01b0\u1edbi \u00e1nh s\u00e1ng ph\u00f2ng thu\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/define-screw-hero.png\" \/><\/p>\n<p>H\u00e3y h\u1ecfi b\u1ea5t k\u1ef3 k\u1ef9 s\u01b0, th\u1ee3 m\u00e1y ho\u1eb7c ng\u01b0\u1eddi l\u00e0m DIY l\u00e2u n\u0103m n\u00e0o v\u1ec1 \u0111\u1ecbnh ngh\u0129a v\u00edt, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u c\u00e2u tr\u1ea3 l\u1eddi kh\u00e1c nhau. M\u1ed9t s\u1ed1 ng\u01b0\u1eddi s\u1ebd n\u00f3i \u201cn\u00f3 gi\u1ed1ng nh\u01b0 m\u1ed9t c\u00e1i \u0111inh c\u00f3 ren.\u201d Ng\u01b0\u1eddi kh\u00e1c s\u1ebd nh\u1eafc \u0111\u1ebfn Archimedes v\u00e0 n\u00f3i v\u1ec1 m\u1eb7t ph\u1eb3ng nghi\u00eang. C\u1ea3 hai \u0111\u1ec1u \u0111\u00fang \u2014 nh\u01b0ng kh\u00f4ng ai k\u1ec3 h\u1ebft c\u00e2u chuy\u1ec7n. V\u00edt c\u00f3 l\u1ebd l\u00e0 y\u1ebfu t\u1ed1 c\u01a1 kh\u00ed \u0111a n\u0103ng nh\u1ea5t m\u00e0 con ng\u01b0\u1eddi t\u1eebng ph\u00e1t minh, \u00e2m th\u1ea7m gi\u1eef ch\u1eb7t m\u1ecdi th\u1ee9 t\u1eeb thi\u1ebft b\u1ecb b\u00e1n d\u1eabn \u0111\u1ebfn nh\u00e0 khung g\u1ed7. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd \u0111\u1ecbnh ngh\u0129a v\u00edt m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c tr\u00ean c\u00e1c kh\u00eda c\u1ea1nh c\u01a1 kh\u00ed, k\u1ef9 thu\u1eadt, v\u1eadt li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng \u2014 \u0111i\u1ec1u m\u00e0 t\u1eeb \u0111i\u1ec3n ch\u01b0a bao gi\u1edd l\u00e0m \u0111\u01b0\u1ee3c.<\/p>\n<hr \/>\n<h2>V\u00edt l\u00e0 g\u00ec? \u0110\u1ecbnh ngh\u0129a K\u1ef9 thu\u1eadt<\/h2>\n<p>V\u00edt l\u00e0 m\u1ed9t ch\u1ed1t c\u01a1 kh\u00ed ho\u1eb7c m\u00e1y \u0111\u01a1n gi\u1ea3n g\u1ed3m m\u1ed9t tr\u1ee5c h\u00ecnh tr\u1ee5 v\u1edbi m\u1ed9t g\u1edd xo\u1eafn \u1ed1c li\u00ean t\u1ee5c \u2014 g\u1ecdi l\u00e0 <strong>ch\u1ee7 \u0111\u1ec1<\/strong> \u2014 qu\u1ea5n quanh b\u1ec1 m\u1eb7t ngo\u00e0i ho\u1eb7c trong c\u1ee7a n\u00f3. Khi quay, ren ti\u1ebfn d\u1ecdc theo \u0111\u01b0\u1eddng xo\u1eafn \u1ed1c, chuy\u1ec3n \u0111\u1ed5i m\u00f4-men xo\u1eafn th\u00e0nh l\u1ef1c d\u1ecdc tr\u1ee5c (k\u00e9o ho\u1eb7c n\u00e9n) ho\u1eb7c chuy\u1ec3n \u0111\u1ed9ng t\u1ecbnh ti\u1ebfn.<\/p>\n<p>\u0110\u1ecbnh ngh\u0129a c\u01a1 kh\u00ed ch\u00ednh th\u1ee9c ph\u00e2n bi\u1ec7t hai c\u00e1ch s\u1eed d\u1ee5ng ch\u1ed3ng l\u1ea5n:<\/p>\n<ol>\n<li><strong>Ch\u1ed1t li\u00ean k\u1ebft<\/strong> \u2014 v\u00edt d\u00f9ng \u0111\u1ec3 k\u1eb9p hai ho\u1eb7c nhi\u1ec1u v\u1eadt li\u1ec7u l\u1ea1i v\u1edbi nhau. Ren \u0103n v\u00e0o v\u1eadt li\u1ec7u n\u1ec1n (g\u1ed7, kim lo\u1ea1i, nh\u1ef1a) ho\u1eb7c \u0103n kh\u1edbp v\u1edbi \u0111ai \u1ed1c, v\u00e0 khi si\u1ebft ch\u1eb7t s\u1ebd t\u1ea1o ra l\u1ef1c k\u1eb9p ch\u1ed1ng t\u00e1ch r\u1eddi.<\/li>\n<li><strong>M\u00e1y \u0111\u01a1n gi\u1ea3n<\/strong> \u2014 v\u00edt d\u00f9ng \u0111\u1ec3 truy\u1ec1n ho\u1eb7c bi\u1ebfn \u0111\u1ed5i l\u1ef1c, nh\u01b0 trong v\u00edt me (m\u00e1y CNC), k\u00edch v\u00edt ho\u1eb7c b\u01a1m v\u00edt Archimedes.<\/li>\n<\/ol>\n<blockquote>\n<p>Trong c\u01a1 h\u1ecdc k\u1ef9 thu\u1eadt, v\u00edt l\u00e0 m\u1ed9t trong s\u00e1u m\u00e1y \u0111\u01a1n gi\u1ea3n c\u1ed5 \u0111i\u1ec3n, xu\u1ea5t ph\u00e1t t\u1eeb m\u1eb7t ph\u1eb3ng nghi\u00eang. Ren v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft l\u00e0 m\u1ed9t m\u1eb7t ph\u1eb3ng nghi\u00eang qu\u1ea5n quanh m\u1ed9t h\u00ecnh tr\u1ee5 \u2014 \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao g\u00f3c xo\u1eafn nh\u1ecf h\u01a1n (b\u01b0\u1edbc ren nh\u1ecf h\u01a1n) t\u1ea1o ra l\u1ee3i th\u1ebf c\u01a1 h\u1ecdc l\u1edbn h\u01a1n nh\u01b0ng c\u1ea7n nhi\u1ec1u v\u00f2ng quay h\u01a1n.<\/p>\n<\/blockquote>\n<h3>V\u00edt v\u00e0 Bu-l\u00f4ng: S\u1ef1 Kh\u00e1c Bi\u1ec7t Ch\u00ednh<\/h3>\n<p>\u0110i\u1ec1u n\u00e0y g\u00e2y nh\u1ea7m l\u1eabn kh\u00f4ng h\u1ed3i k\u1ebft. Theo <a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b18-fasteners\" target=\"_blank\" rel=\"noopener\">Ti\u00eau chu\u1ea9n ASME B18 v\u1ec1 ch\u1ed1t li\u00ean k\u1ebft<\/a>, quy t\u1eafc x\u00e1c \u0111\u1ecbnh l\u00e0:<\/p>\n<ul>\n<li><strong>M\u1ed9t v\u00edt<\/strong> ren tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u (t\u1ef1 khoan v\u00e0o g\u1ed7, nh\u1ef1a ho\u1eb7c t\u00f4n) ho\u1eb7c v\u00e0o l\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ren s\u1eb5n \u2014 kh\u00f4ng c\u1ea7n \u0111ai \u1ed1c.<\/li>\n<li><strong>M\u1ed9t bu l\u00f4ng<\/strong> \u0111i qua l\u1ed7 tho\u00e1ng v\u00e0 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh b\u1eb1ng \u0111ai \u1ed1c \u1edf ph\u00eda \u0111\u1ed1i di\u1ec7n.<\/li>\n<\/ul>\n<p>Tr\u00ean th\u1ef1c t\u1ebf, ranh gi\u1edbi n\u00e0y kh\u00e1 m\u1edd. \u201cV\u00edt m\u00e1y\u201d d\u00f9ng v\u1edbi \u0111ai \u1ed1c th\u1ef1c ch\u1ea5t l\u00e0 bu-l\u00f4ng. \u201cV\u00edt \u0111\u1ea7u ch\u1ee5p\u201d (\u0111\u1ea7u l\u1ee5c gi\u00e1c) \u0111\u00f4i khi \u0111\u01b0\u1ee3c d\u00f9ng thay cho bu-l\u00f4ng. Khi kh\u00f4ng ch\u1eafc ch\u1eafn, h\u00e3y theo \u0111\u1ecbnh ngh\u0129a c\u1ee7a ASME: n\u1ebfu c\u1ea7n \u0111ai \u1ed1c \u0111\u1ec3 k\u1eb9p, n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 bu-l\u00f4ng.<\/p>\n<h3>V\u00edt v\u00e0 \u0110inh: T\u1ea1i Sao Ren L\u1ea1i Quan Tr\u1ecdng<\/h3>\n<p>M\u1ed9t chi\u1ebfc \u0111inh gi\u1eef nh\u1edd ma s\u00e1t v\u00e0 bi\u1ebfn d\u1ea1ng n\u00e9n c\u1ee7a s\u1ee3i v\u1eadt li\u1ec7u n\u1ec1n. M\u1ed9t con v\u00edt gi\u1eef nh\u1edd s\u1ef1 \u0103n kh\u1edbp c\u1ee7a ren \u2014 g\u1edd xo\u1eafn c\u01a1 h\u1ecdc li\u00ean k\u1ebft v\u1edbi v\u1eadt li\u1ec7u xung quanh. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao v\u00edt ch\u1ed1ng l\u1ea1i l\u1ef1c r\u00fat (k\u00e9o ra) t\u1ed1t h\u01a1n nhi\u1ec1u so v\u1edbi \u0111inh c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh. Trong g\u1ed7 k\u1ebft c\u1ea5u, m\u1ed9t con v\u00edt d\u00e0i 3 inch th\u01b0\u1eddng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00fat g\u1ea5p 2\u20133 l\u1ea7n so v\u1edbi m\u1ed9t chi\u1ebfc \u0111inh d\u00e0i 3 inch c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh.<\/p>\n<table>\n<thead>\n<tr>\n<th>Thu\u1ed9c t\u00ednh<\/th>\n<th>V\u00edt<\/th>\n<th>\u0110inh<\/th>\n<th>Bu l\u00f4ng + \u0110ai \u1ed1c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u01a1 ch\u1ebf gi\u1eef ch\u1eb7t<\/td>\n<td>\u0102n kh\u1edbp ren<\/td>\n<td>Ma s\u00e1t \/ bi\u1ebfn d\u1ea1ng<\/td>\n<td>K\u1eb9p xuy\u00ean qua<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00fat<\/td>\n<td>Cao<\/td>\n<td>Th\u1ea5p\u2013trung b\u00ecnh<\/td>\n<td>Cao<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng th\u00e1o r\u1eddi<\/td>\n<td>D\u1ec5 d\u00e0ng (v\u1eb7n ra)<\/td>\n<td>Kh\u00f3<\/td>\n<td>D\u1ec5 d\u00e0ng (th\u00e1o \u0111ai \u1ed1c)<\/td>\n<\/tr>\n<tr>\n<td>Y\u00eau c\u1ea7u khoan l\u1ed7 tr\u01b0\u1edbc<\/td>\n<td>T\u00f9y ch\u1ecdn<\/td>\n<td>Kh\u00f4ng (th\u01b0\u1eddng l\u00e0 v\u1eady)<\/td>\n<td>C\u00f3 (l\u1ed7 tho\u00e1t)<\/td>\n<\/tr>\n<tr>\n<td>Lo\u1ea1i t\u1ea3i tr\u1ecdng t\u1ed1i \u01b0u<\/td>\n<td>D\u1ecdc tr\u1ee5c (k\u00e9o)<\/td>\n<td>Tr\u01b0\u1ee3t<\/td>\n<td>C\u1eaft + k\u00e9o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>H\u00ecnh h\u1ecdc ren v\u00edt: C\u1ea5u t\u1ea1o quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t<\/h2>\n<p>\u0110\u1ec3 \u0111\u1ecbnh ngh\u0129a ch\u00ednh x\u00e1c v\u1ec1 v\u00edt, b\u1ea1n ph\u1ea3i hi\u1ec3u h\u00ecnh h\u1ecdc ren \u2014 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quy\u1ebft \u0111\u1ecbnh c\u00e1ch v\u00edt ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi t\u1ea3i tr\u1ecdng.<\/p>\n<p><img decoding=\"async\" alt=\"\u0111\u1ecbnh ngh\u0129a v\u00edt \u2014 s\u01a1 \u0111\u1ed3 4:3 minh h\u1ecda c\u00e1c lo\u1ea1i ren v\u00edt bao g\u1ed3m UNC, h\u1ec7 m\u00e9t v\u00e0 t\u1ef1 khoan v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c ghi ch\u00fa\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/define-screw-types.png\" \/><\/p>\n<h3>B\u01b0\u1edbc ren v\u00e0 b\u01b0\u1edbc ti\u1ebfn<\/h3>\n<p><strong>B\u01b0\u1edbc Ren<\/strong> l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u1ec9nh ren li\u1ec1n k\u1ec1, \u0111\u01b0\u1ee3c \u0111o song song v\u1edbi tr\u1ee5c v\u00edt. B\u01b0\u1edbc ren th\u00f4 h\u01a1n (s\u1ed1 l\u1edbn h\u01a1n, \u00edt ren tr\u00ean m\u1ed7i inch h\u01a1n) gi\u00fap truy\u1ec1n \u0111\u1ed9ng nhanh h\u01a1n v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u m\u1ec1m nh\u01b0 g\u1ed7. B\u01b0\u1edbc ren m\u1ecbn h\u01a1n (s\u1ed1 nh\u1ecf h\u01a1n, nhi\u1ec1u ren tr\u00ean m\u1ed7i inch h\u01a1n) t\u1ea1o l\u1ef1c k\u1eb9p l\u1edbn h\u01a1n v\u00e0 ch\u1ed1ng l\u1ecfng khi rung \u0111\u1ed9ng \u2014 \u0111\u01b0\u1ee3c \u01b0u ti\u00ean trong li\u00ean k\u1ebft kim lo\u1ea1i.<\/p>\n<p><strong>Ch\u00ec<\/strong> l\u00e0 kho\u1ea3ng c\u00e1ch tuy\u1ebfn t\u00ednh m\u00e0 v\u00edt ti\u1ebfn l\u00ean sau m\u1ed7i v\u00f2ng quay \u0111\u1ea7y \u0111\u1ee7. \u0110\u1ed1i v\u1edbi ren m\u1ed9t \u0111\u1ea7u (chu\u1ea9n), b\u01b0\u1edbc ti\u1ebfn b\u1eb1ng b\u01b0\u1edbc ren. Ren nhi\u1ec1u \u0111\u1ea7u (2 \u0111\u1ea7u, 3 \u0111\u1ea7u) c\u00f3 b\u01b0\u1edbc ti\u1ebfn l\u00e0 b\u1ed9i s\u1ed1 c\u1ee7a b\u01b0\u1edbc ren, cho ph\u00e9p ti\u1ebfn nhanh h\u01a1n \u2014 th\u01b0\u1eddng d\u00f9ng trong tr\u1ee5c v\u00edt me cho thi\u1ebft b\u1ecb CNC v\u00e0 l\u1ecd \u0111\u1eady n\u1eafp.<\/p>\n<h3>G\u00f3c v\u00e0 H\u00ecnh d\u1ea1ng Ren<\/h3>\n<p>G\u00f3c ren l\u00e0 g\u00f3c gi\u1eefa hai m\u1eb7t b\u00ean c\u1ee7a h\u00ecnh d\u1ea1ng ren, \u0111\u01b0\u1ee3c \u0111o theo m\u1eb7t c\u1eaft ngang. C\u00e1c ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn:<\/p>\n<ul>\n<li><strong>Ren Th\u1ed1ng Nh\u1ea5t (UN\/UNC\/UNF) \u2014 60\u00b0<\/strong> \u2014 ti\u00eau chu\u1ea9n ch\u1ee7 \u0111\u1ea1o t\u1ea1i Vi\u1ec7t Nam cho c\u00e1c ch\u1ed1t ren h\u1ec7 inch<\/li>\n<li><strong>Ren h\u1ec7 M\u00e9t (ISO) \u2014 60\u00b0<\/strong> \u2014 h\u00ecnh h\u1ecdc g\u1ea7n nh\u01b0 gi\u1ed1ng h\u1ec7t UN, kh\u00e1c h\u1ec7 k\u00edch th\u01b0\u1edbc<\/li>\n<li><strong>Acme \u2014 29\u00b0<\/strong> \u2014 h\u00ecnh thang, thi\u1ebft k\u1ebf cho truy\u1ec1n \u0111\u1ed9ng l\u1ef1c (tr\u1ee5c v\u00edt me, \u00ea t\u00f4, k\u00edch); ch\u1ecbu t\u1ea3i \u0111\u1ea9y l\u1edbn h\u01a1n ren ch\u1eef V<\/li>\n<li><strong>Buttress \u2014 7\u00b0\/45\u00b0<\/strong> \u2014 b\u1ea5t \u0111\u1ed1i x\u1ee9ng; c\u1ef1c k\u1ef3 ch\u1eafc ch\u1eafn theo m\u1ed9t h\u01b0\u1edbng tr\u1ee5c duy nh\u1ea5t (n\u00f2ng s\u00fang, xi lanh th\u1ee7y l\u1ef1c)<\/li>\n<\/ul>\n<p>Ren ch\u1eef V 60\u00b0 chi\u1ebfm \u01b0u th\u1ebf trong li\u00ean k\u1ebft v\u00ec c\u00e1c m\u1eb7t b\u00ean t\u1ea1o l\u1ef1c k\u1eb9p h\u01b0\u1edbng k\u00ednh l\u1edbn v\u00e0 hi\u1ec7u \u1ee9ng t\u1ef1 kh\u00f3a d\u1ea1ng n\u00eam \u2014 r\u1ea5t quan tr\u1ecdng v\u1edbi ch\u1ed1t ren kh\u00f4ng \u0111\u01b0\u1ee3c l\u1ecfng khi ch\u1ecbu t\u1ea3i.<\/p>\n<h3>\u0110\u01b0\u1eddng k\u00ednh Ch\u00ednh, \u0110\u01b0\u1eddng k\u00ednh Nh\u1ecf v\u00e0 \u0110\u01b0\u1eddng k\u00ednh B\u01b0\u1edbc<\/h3>\n<table>\n<thead>\n<tr>\n<th>K\u00edch th\u01b0\u1edbc<\/th>\n<th>\u0110\u1ecbnh ngh\u0129a<\/th>\n<th>\u00dd ngh\u0129a K\u1ef9 thu\u1eadt<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u01b0\u1eddng k\u00ednh Ch\u00ednh<\/td>\n<td>\u0110\u1ec9nh ren ngo\u00e0i c\u00f9ng (k\u00edch th\u01b0\u1edbc danh ngh\u0129a)<\/td>\n<td>S\u1ed1 b\u1ea1n th\u1ea5y tr\u00ean nh\u00e3n: M6, #10-32, 1\/4-20<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01b0\u1eddng k\u00ednh nh\u1ecf nh\u1ea5t (l\u00f5i ren)<\/td>\n<td>R\u00e3nh ren \u1edf l\u00f5i<\/td>\n<td>X\u00e1c \u0111\u1ecbnh di\u1ec7n t\u00edch ch\u1ecbu l\u1ef1c k\u00e9o<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01b0\u1eddng k\u00ednh B\u01b0\u1edbc<\/td>\n<td>Xi lanh t\u01b0\u1edfng t\u01b0\u1ee3ng n\u01a1i ren v\u00e0 khe b\u1eb1ng nhau<\/td>\n<td>Tham s\u1ed1 l\u1eafp gh\u00e9p cho dung sai ph\u00f9 h\u1ee3p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00e1c <strong>di\u1ec7n t\u00edch ch\u1ecbu k\u00e9o<\/strong> \u2014 ti\u1ebft di\u1ec7n hi\u1ec7u qu\u1ea3 ch\u1ecbu t\u1ea3i \u2014 \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb trung b\u00ecnh c\u1ee7a \u0111\u01b0\u1eddng k\u00ednh b\u01b0\u1edbc ren v\u00e0 \u0111\u01b0\u1eddng k\u00ednh l\u00f5i. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao hai v\u00edt c\u00f9ng k\u00edch th\u01b0\u1edbc danh ngh\u0129a nh\u01b0ng b\u01b0\u1edbc ren kh\u00e1c nhau l\u1ea1i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i kh\u00e1c nhau.<\/p>\n<hr \/>\n<h2>C\u00e1c lo\u1ea1i v\u00edt: Ph\u00e2n lo\u1ea1i theo ch\u1ee9c n\u0103ng v\u00e0 \u1ee9ng d\u1ee5ng<\/h2>\n<p>T\u1eeb \u201cv\u00edt\u201d bao g\u1ed3m h\u00e0ng tr\u0103m lo\u1ea1i s\u1ea3n ph\u1ea9m. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t ph\u00e2n lo\u1ea1i th\u1ef1c t\u1ebf d\u1ef1a tr\u00ean \u1ee9ng d\u1ee5ng \u2014 khung m\u00e0 c\u00e1c k\u1ef9 s\u01b0 s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ed9i ng\u0169 mua h\u00e0ng th\u1ef1c t\u1ebf s\u1eed d\u1ee5ng.<\/p>\n<h3>\u1ed0c v\u00edt g\u1ed7<\/h3>\n<p>Thi\u1ebft k\u1ebf \u0111\u1ec3 li\u00ean k\u1ebft g\u1ed7 t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m g\u1ed7 k\u1ef9 thu\u1eadt. \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh:<\/p>\n<ul>\n<li><strong>Th\u00e2n v\u00edt thu\u00f4n<\/strong> \u2014 r\u1ed9ng h\u01a1n \u1edf \u0111\u1ea7u, thu\u00f4n nh\u1ecdn v\u1ec1 ph\u00eda m\u0169i; kh\u00f4ng c\u1ea7n khoan tr\u01b0\u1edbc khi d\u00f9ng v\u1edbi g\u1ed7 m\u1ec1m<\/li>\n<li><strong>V\u00edt ren th\u00f4<\/strong> \u2014 th\u01b0\u1eddng 8\u201314 TPI (s\u1ed1 v\u00f2ng ren tr\u00ean m\u1ed7i inch) \u0111\u1ec3 b\u00e1m ch\u1eafc v\u00e0o th\u1edb g\u1ed7<\/li>\n<li><strong>Ren m\u1ed9t ph\u1ea7n<\/strong> \u2014 ph\u1ea7n th\u00e2n tr\u01a1n d\u01b0\u1edbi \u0111\u1ea7u v\u00edt gi\u00fap k\u00e9o s\u00e1t t\u1ea5m g\u1ed7 tr\u00ean v\u00e0o t\u1ea5m g\u1ed7 d\u01b0\u1edbi (t\u1ea1o l\u1ef1c k\u1eb9p ch\u1eb7t)<\/li>\n<\/ul>\n<p>V\u00edt x\u00e2y d\u1ef1ng hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng <strong>m\u0169i khoan type-17<\/strong> (m\u1ed9t khe nh\u1ecf \u1edf \u0111\u1ea7u m\u0169i gi\u00fap c\u1eaft s\u1ee3i g\u1ed7 thay v\u00ec l\u00e0m n\u1ee9t g\u1ed7) v\u00e0 \u0111\u1ea7u bugle t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c ch\u00ecm \u0111\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n m\u0169i khoan ch\u00ecm. Theo <a href=\"https:\/\/www.fpl.fs.usda.gov\/\" target=\"_blank\" rel=\"noopener\">D\u1eef li\u1ec7u hi\u1ec7u su\u1ea5t li\u00ean k\u1ebft g\u1ed7 t\u1eeb Ph\u00f2ng th\u00ed nghi\u1ec7m S\u1ea3n ph\u1ea9m G\u1ed7 Vi\u1ec7t Nam<\/a>, l\u1ef1c r\u00fat ra kh\u1ecfi g\u1ed7 th\u00f4ng \u0111\u1ecf cho v\u00edt #10 \u00d7 3\u2033 v\u01b0\u1ee3t qu\u00e1 350 lbf \u2014 h\u01a1n 3 l\u1ea7n so v\u1edbi \u0111inh th\u00e2n tr\u01a1n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<h3>\u1ed0c v\u00edt m\u00e1y<\/h3>\n<p>V\u00edt m\u00e1y l\u00e0 lo\u1ea1i v\u00edt c\u00f3 ren to\u00e0n th\u00e2n v\u1edbi \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ed3ng \u0111\u1ec1u (kh\u00f4ng thu\u00f4n) d\u00f9ng cho l\u1ed7 kim lo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c taro s\u1eb5n ho\u1eb7c d\u00f9ng v\u1edbi \u0111ai \u1ed1c. Ch\u00fang tu\u00e2n theo c\u00e1c ti\u00eau chu\u1ea9n ren:<\/p>\n<ul>\n<li><strong>UNC (Unified National Coarse)<\/strong> \u2014 dung sai cao h\u01a1n, l\u1eafp r\u00e1p nhanh h\u01a1n, \u01b0u ti\u00ean khi kh\u00f4ng c\u00f3 rung \u0111\u1ed9ng<\/li>\n<li><strong>UNF (Unified National Fine)<\/strong> \u2014 ch\u1eafc ch\u1eafn h\u01a1n (di\u1ec7n t\u00edch ch\u1ecbu k\u00e9o l\u1edbn h\u01a1n), ch\u1ed1ng rung t\u1ed1t h\u01a1n, kh\u00f3 b\u1ecb ch\u00e9o ren<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n ren h\u1ec7 m\u00e9t ISO<\/strong> \u2014 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ea7u h\u1ebft t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i m\u00e1y m\u00f3c v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1eadp kh\u1ea9u<\/li>\n<\/ul>\n<p>C\u00e1c ki\u1ec3u \u0111\u1ea7u v\u00edt ph\u1ed5 bi\u1ebfn: \u0111\u1ea7u tr\u00f2n, \u0111\u1ea7u ph\u1eb3ng (ch\u00ecm), \u0111\u1ea7u b\u1ea7u d\u1ee5c, \u0111\u1ea7u n\u1ea5m, \u0111\u1ea7u fillister, \u0111\u1ea7u l\u1ee5c gi\u00e1c v\u00e0 \u0111\u1ea7u \u1ed5 c\u1eafm (l\u1ee5c gi\u00e1c trong \/ Allen). C\u00e1c lo\u1ea1i r\u00e3nh: r\u00e3nh th\u1eb3ng, r\u00e3nh ch\u1eef th\u1eadp, r\u00e3nh k\u1ebft h\u1ee3p, Torx, l\u1ee5c gi\u00e1c trong, vu\u00f4ng (Robertson), v\u00e0 Torx Plus.<\/p>\n<h3>V\u00edt t\u1ef1 khoan<\/h3>\n<p>V\u00edt t\u1ef1 khoan s\u1ebd c\u1eaft ho\u1eb7c t\u1ea1o ren ri\u00eang khi \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o, lo\u1ea1i b\u1ecf nhu c\u1ea7u ph\u1ea3i khoan l\u1ed7 ren tr\u01b0\u1edbc. C\u00f3 hai lo\u1ea1i ch\u00ednh:<\/p>\n<p><strong>C\u1eaft ren (Lo\u1ea1i AB\/B):<\/strong> C\u00f3 \u0111\u1ea7u nh\u1ecdn v\u00e0 c\u1ea1nh ren s\u1eafc b\u00e9n gi\u00fap c\u1eaft v\u1eadt li\u1ec7u \u0111\u1ec3 t\u1ea1o ren. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho t\u00f4n m\u1ecfng, nh\u1ef1a m\u1ecfng v\u00e0 nh\u00f4m m\u1ec1m. \u0110\u1ec3 l\u1ea1i phoi trong l\u1ed7 \u2014 kh\u00f4ng l\u00fd t\u01b0\u1edfng cho c\u00e1c c\u1ee5m k\u00edn.<\/p>\n<p><strong>T\u1ea1o ren (l\u0103n \/ plastite):<\/strong> \u0110\u1ea9y v\u1eadt li\u1ec7u thay v\u00ec c\u1eaft, kh\u00f4ng t\u1ea1o phoi v\u00e0 t\u1ea1o ren ch\u1eafc h\u01a1n (do t\u00f4i c\u1ee9ng). \u01afu ti\u00ean d\u00f9ng cho nh\u00f4m \u0111\u00fac, nh\u1ef1a nhi\u1ec7t d\u1ebbo v\u00e0 k\u1ebdm. C\u1ea7n m\u00f4-men xo\u1eafn l\u1edbn h\u01a1n \u0111\u1ec3 v\u1eb7n nh\u01b0ng \u0111\u1ea1t kh\u1ea3 n\u0103ng ch\u1ecbu k\u00e9o v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n<h3>\u1ed0c v\u00edt t\u1ea5m kim lo\u1ea1i<\/h3>\n<p>M\u1ed9t lo\u1ea1i v\u00edt t\u1ef1 khoan \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho th\u00e9p m\u1ecfng (\u1ed1ng gi\u00f3 HVAC, h\u1ed9p \u0111i\u1ec7n, t\u1ea5m th\u00e2n xe \u00f4 t\u00f4). Ren to\u00e0n b\u1ed9 t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i, \u0111\u1ea7u nh\u1ecdn s\u1eafc. C\u00e1c lo\u1ea1i \u0111\u1ea7u:<\/p>\n<ul>\n<li><strong>Lo\u1ea1i A<\/strong> \u2014 ren th\u00f4, \u0111\u1ea7u nh\u1ecdn \u2014 d\u00f9ng cho t\u00f4n m\u1ec1m<\/li>\n<li><strong>Lo\u1ea1i AB<\/strong> \u2014 ren th\u00f4 h\u01a1n, \u0111\u1ea7u nh\u1ecdn h\u01a1n \u2014 d\u00f9ng cho t\u00f4n n\u00f3i chung<\/li>\n<li><strong>Lo\u1ea1i B<\/strong> \u2014 \u0111\u1ea7u t\u00f9 \u2014 c\u1ea7n l\u1ed7 \u0111\u1ee5c s\u1eb5n<\/li>\n<li><strong>Lo\u1ea1i S<\/strong> \u2014 d\u00f9ng cho khung th\u00e9p nh\u1eb9 trong x\u00e2y d\u1ef1ng khung<\/li>\n<\/ul>\n<h3>\u1ed0c v\u00edt b\u1eaft ch\u1eb7t (\u1ed0c v\u00edt b\u1eaft bu\u1ed9c)<\/h3>\n<p>V\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c \u0111\u01b0\u1eddng k\u00ednh l\u1edbn v\u1edbi ren g\u1ed7 th\u00f4 v\u00e0 \u0111\u1ea7u nh\u1ecdn, thi\u1ebft k\u1ebf \u0111\u1ec3 neo v\u00e0o g\u1ed7 k\u1ebft c\u1ea5u ho\u1eb7c g\u1eafn thi\u1ebft b\u1ecb n\u1eb7ng v\u00e0o c\u00e1c b\u1ed9 ph\u1eadn g\u1ed7. V\u1eb7n b\u1eb1ng c\u1edd l\u00ea ho\u1eb7c m\u00e1y si\u1ebft, kh\u00f4ng d\u00f9ng tua v\u00edt. \u0110\u01b0\u1eddng k\u00ednh 1\/4\u2033 \u0111\u1ebfn 1\u2033, chi\u1ec1u d\u00e0i 1\u2033 \u0111\u1ebfn 6\u2033. L\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong li\u00ean k\u1ebft d\u1ea7m s\u00e0n v\u00e0 khung k\u1ebft c\u1ea5u theo <a href=\"https:\/\/codes.iccsafe.org\/content\/IRC2021P2\" target=\"_blank\" rel=\"noopener\">B\u1ea3ng R507.9.1.3(2) c\u1ee7a Quy chu\u1ea9n X\u00e2y d\u1ef1ng Vi\u1ec7t Nam (IBC)<\/a>.<\/p>\n<h3>V\u00edt c\u1ed1 \u0111\u1ecbnh (Set Screws)<\/h3>\n<p>V\u00edt kh\u00f4ng \u0111\u1ea7u \u2014 ren to\u00e0n b\u1ed9 \u2014 d\u00f9ng \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh m\u1ed9t b\u1ed9 ph\u1eadn (b\u00e1nh r\u0103ng, puli, v\u00f2ng c\u1ed5) l\u00ean tr\u1ee5c. V\u00edt ch\u1ed1t \u0111\u01b0\u1ee3c v\u1eb7n cho \u0111\u1ebfn khi \u0111\u1ea7u ti\u1ebfp x\u00fac v\u1edbi tr\u1ee5c, t\u1ea1o ma s\u00e1t ho\u1eb7c \u0103n s\u00e2u v\u00e0o tr\u1ee5c. C\u00e1c lo\u1ea1i \u0111\u1ea7u c\u1ed1c, \u0111\u1ea7u n\u00f3n, \u0111\u1ea7u ph\u1eb3ng v\u00e0 \u0111\u1ea7u ch\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c v\u1eadt li\u1ec7u tr\u1ee5c v\u00e0 y\u00eau c\u1ea7u th\u00e1o l\u1eafp kh\u00e1c nhau.<\/p>\n<hr \/>\n<h2>V\u1eadt li\u1ec7u v\u00e0 l\u1edbp ph\u1ee7 v\u00edt: \u00dd ngh\u0129a th\u1ef1c t\u1ebf c\u1ee7a b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h2>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00edt ph\u00f9 h\u1ee3p quan tr\u1ecdng kh\u00f4ng k\u00e9m vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i ren \u2014 s\u1ef1 c\u1ed1 do kh\u00f4ng ph\u00f9 h\u1ee3p c\u1ea5p \u0111\u1ed9 (v\u1eadt li\u1ec7u sai, m\u00f4i tr\u01b0\u1eddng sai) c\u0169ng nghi\u00eam tr\u1ecdng nh\u01b0 vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ed1t qu\u00e1 nh\u1ecf.<\/p>\n<h3>Th\u00e9p carbon<\/h3>\n<p>Lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t. Th\u00e9p cacbon th\u1ea5p (SAE 1010\u20131022) d\u00f9ng cho v\u00edt g\u1ed7 ti\u00eau chu\u1ea9n v\u00e0 v\u00edt t\u00f4n. Th\u00e9p cacbon trung b\u00ecnh (SAE 1035\u20131065) d\u00f9ng cho v\u00edt m\u00e1y v\u00e0 bu l\u00f4ng c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ec3 \u0111\u1ea1t t\u1ea3i ch\u1ee9ng minh c\u1ee5 th\u1ec3 (C\u1ea5p 5: 85 ksi; C\u1ea5p 8: 120 ksi t\u1ea3i ch\u1ee9ng minh theo SAE J429).<\/p>\n<h3>Th\u00e9p kh\u00f4ng g\u1ec9<\/h3>\n<ul>\n<li><strong>18-8 (304)<\/strong> \u2014 lo\u1ea1i inox ph\u1ed5 bi\u1ebfn nh\u1ea5t, ph\u00f9 h\u1ee3p cho h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng ngo\u00e0i tr\u1eddi v\u00e0 ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m. Ch\u1ed1ng \u0103n m\u00f2n kh\u00ed quy\u1ec3n, axit v\u00e0 h\u1ea7u h\u1ebft m\u00f4i tr\u01b0\u1eddng h\u00f3a ch\u1ea5t.<\/li>\n<li><strong>316<\/strong> \u2014 b\u1ed5 sung molypden \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng clo v\u01b0\u1ee3t tr\u1ed9i. B\u1eaft bu\u1ed9c cho thi\u1ebft b\u1ecb h\u00e0ng h\u1ea3i, ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m v\u00e0 \u1ee9ng d\u1ee5ng nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t.<\/li>\n<li><strong>Inox 410<\/strong> \u2014 lo\u1ea1i martensitic, c\u00f3 th\u1ec3 t\u00f4i c\u1ee9ng; d\u00f9ng cho v\u00edt t\u1ef1 khoan khi c\u1ea7n \u0111\u1ed9 c\u1ee9ng \u0111\u1ec3 t\u1ea1o ren, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c (kh\u00f4ng xu\u1ea5t s\u1eafc).<\/li>\n<\/ul>\n<p>Quan tr\u1ecdng: v\u00edt inox, \u0111\u1eb7c bi\u1ec7t l\u00e0 lo\u1ea1i 18-8, c\u00f3 <strong>\u0111\u1ed9 c\u1ee9ng th\u1ea5p h\u01a1n<\/strong> so v\u1edbi th\u00e9p cacbon \u0111\u00e3 x\u1eed l\u00fd nhi\u1ec7t. Vi\u1ec7c si\u1ebft v\u00edt inox v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n xo\u1eafn r\u1ea5t d\u1ec5 x\u1ea3y ra \u2014 \u0111\u1eb7c bi\u1ec7t khi d\u00f9ng m\u00e1y si\u1ebft t\u00e1c \u0111\u1ed9ng. Th\u1ef1c t\u1ebf, ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y v\u00edt s\u00e0n 18-8 inox #10 b\u1ecb tu\u00f4n ho\u1eb7c g\u00e3y \u1edf kho\u1ea3ng 60\u201370% l\u1ef1c xo\u1eafn so v\u1edbi v\u00edt th\u00e9p cacbon c\u1ee9ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. H\u00e3y si\u1ebft theo c\u1ea3m gi\u00e1c, kh\u00f4ng ph\u1ea3i theo l\u1ef1c xo\u1eafn t\u1ed1i \u0111a.<\/p>\n<h3>\u0110\u1ed3ng v\u00e0 Nh\u00f4m<\/h3>\n<p>\u0110\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 d\u1eabn \u0111i\u1ec7n tuy\u1ec7t v\u1eddi \u2014 d\u00f9ng cho \u0111\u1ea7u n\u1ed1i \u0111i\u1ec7n, trang tr\u00ed h\u00e0ng h\u1ea3i v\u00e0 h\u1ec7 th\u1ed1ng n\u01b0\u1edbc. M\u1ec1m, d\u1ec5 b\u1ecb tu\u00f4n ren. V\u00edt nh\u00f4m d\u00f9ng cho c\u00e1c c\u1ee5m nh\u1eb9 n\u01a1i lo ng\u1ea1i \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a v\u1edbi n\u1ec1n nh\u00f4m (ti\u1ebfp x\u00fac th\u00e9p-nh\u00f4m g\u00e2y \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a nhanh trong m\u00f4i tr\u01b0\u1eddng \u1ea9m).<\/p>\n<h3>X\u1eed l\u00fd b\u1ec1 m\u1eb7t v\u00e0 l\u1edbp ph\u1ee7<\/h3>\n<table>\n<thead>\n<tr>\n<th>Ho\u00e0n thi\u1ec7n<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p<\/th>\n<th>B\u1ea3o v\u1ec7 ch\u1ed1ng \u0103n m\u00f2n<\/th>\n<th>Ghi ch\u00fa<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u1ea1 k\u1ebdm \u0111i\u1ec7n ph\u00e2n<\/td>\n<td>M\u1ea1 \u0111i\u1ec7n<\/td>\n<td>Trung b\u00ecnh (48\u201396h phun mu\u1ed1i)<\/td>\n<td>Trong nh\u00e0\/ch\u1ec9 ngo\u00e0i tr\u1eddi nh\u1eb9<\/td>\n<\/tr>\n<tr>\n<td>M\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/td>\n<td>Nh\u00fang v\u00e0o k\u1ebdm n\u00f3ng ch\u1ea3y<\/td>\n<td>Xu\u1ea5t s\u1eafc (1000h+ phun mu\u1ed1i)<\/td>\n<td>K\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi; l\u1edbp ph\u1ee7 d\u00e0y c\u00f3 th\u1ec3 l\u00e0m k\u1eb9t ren<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ee7 \u0111en<\/td>\n<td>L\u1edbp ph\u1ee7 chuy\u1ec3n \u0111\u1ed5i<\/td>\n<td>R\u1ea5t \u00edt n\u1ebfu ch\u1ec9 d\u00f9ng ri\u00eang<\/td>\n<td>Ch\u1ee7 y\u1ebfu l\u00e0 th\u1ea9m m\u1ef9; c\u1ea7n d\u1ea7u ho\u1eb7c s\u00e1p<\/td>\n<\/tr>\n<tr>\n<td>Dacromet \/ geomet<\/td>\n<td>M\u1ea1 v\u1ea3y k\u1ebdm-nh\u00f4m<\/td>\n<td>Xu\u1ea5t s\u1eafc<\/td>\n<td>Ch\u1ea5t l\u01b0\u1ee3ng \u00f4 t\u00f4; kh\u00f4ng c\u00f3 nguy c\u01a1 gi\u00f2n do hydro<\/td>\n<\/tr>\n<tr>\n<td>Th\u1ee5 \u0111\u1ed9ng h\u00f3a inox<\/td>\n<td>T\u1eafm axit nitric ho\u1eb7c axit citric<\/td>\n<td>Xu\u1ea5t s\u1eafc<\/td>\n<td>Kh\u00f4i ph\u1ee5c l\u1edbp oxit t\u1ef1 nhi\u00ean tr\u00ean inox<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>C\u00e1ch ch\u1ecdn v\u00edt ph\u00f9 h\u1ee3p: Khung l\u1ef1a ch\u1ecdn th\u1ef1c ti\u1ec5n<\/h2>\n<p>\u0110\u00e2y l\u00e0 n\u01a1i h\u1ea7u h\u1ebft c\u00e1c b\u00e0i vi\u1ebft \u201c\u0111\u1ecbnh ngh\u0129a v\u00edt\u201d d\u1eebng l\u1ea1i \u1edf t\u1eeb v\u1ef1ng. Ch\u00fang t\u00f4i s\u1ebd \u0111i xa h\u01a1n v\u1edbi m\u1ed9t khung quy\u1ebft \u0111\u1ecbnh m\u00e0 k\u1ef9 s\u01b0 s\u1ea3n xu\u1ea5t v\u00e0 hi\u1ec7n tr\u01b0\u1eddng th\u1ef1c s\u1ef1 s\u1eed d\u1ee5ng.<\/p>\n<p><img decoding=\"async\" alt=\"\u0111\u1ecbnh ngh\u0129a v\u00edt \u2014 s\u01a1 \u0111\u1ed3 quy\u1ebft \u0111\u1ecbnh 4:3 th\u1ec3 hi\u1ec7n ti\u00eau ch\u00ed ch\u1ecdn v\u00edt: v\u1eadt li\u1ec7u, t\u1ea3i tr\u1ecdng, m\u00f4i tr\u01b0\u1eddng, lo\u1ea1i \u0111\u1ea7u v\u1eb7n\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/define-screw-howto.png\" \/><\/p>\n<h3>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh v\u1eadt li\u1ec7u n\u1ec1n<\/h3>\n<p>V\u1eadt li\u1ec7u n\u1ec1n \u2014 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i \u2014 quy\u1ebft \u0111\u1ecbnh d\u1ea1ng ren, h\u00ecnh d\u1ea1ng \u0111\u1ea7u nh\u1ecdn v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1eadt li\u1ec7u.<\/p>\n<ul>\n<li><strong>G\u1ed7 m\u1ec1m \/ v\u00e1n \u00e9p<\/strong> \u2192 ren th\u00f4, \u0111\u1ea7u nh\u1ecdn, v\u00edt g\u1ed7 #6\u2013#12<\/li>\n<li><strong>G\u1ed7 c\u1ee9ng (s\u1ed3i, th\u00edch)<\/strong> \u2192 gi\u1ed1ng nh\u01b0 tr\u00ean nh\u01b0ng c\u1ea7n khoan l\u1ed7 d\u1eabn (th\u01b0\u1eddng 75\u201385% \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf nh\u1ea5t) \u0111\u1ec3 tr\u00e1nh n\u1ee9t; c\u00e2n nh\u1eafc \u0111\u1ea7u t\u1ef1 khoan<\/li>\n<li><strong>T\u00f4n m\u1ecfng (\u2264 1\/4\u2033)<\/strong> \u2192 v\u00edt t\u1ef1 khoan t\u00f4n, lo\u1ea1i AB ho\u1eb7c B<\/li>\n<li><strong>Th\u00e9p k\u1ebft c\u1ea5u \/ gang<\/strong> \u2192 v\u00edt m\u00e1y ho\u1eb7c bu l\u00f4ng v\u00e0o l\u1ed7 \u0111\u00e3 taro, ho\u1eb7c bu l\u00f4ng xuy\u00ean<\/li>\n<li><strong>Nh\u1ef1a nhi\u1ec7t d\u1ebbo<\/strong> \u2192 v\u00edt t\u1ef1 t\u1ea1o ren (ki\u1ec3u plastite) \u0111\u1ec3 tr\u00e1nh g\u00e3y gi\u00f2n<\/li>\n<li><strong>\u0110\u00fac khu\u00f4n nh\u00f4m<\/strong> \u2192 v\u00edt t\u1ea1o ren, th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c th\u00e9p \u0111\u00e3 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u1ec3 gi\u1ea3m thi\u1ec3u nguy c\u01a1 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng v\u00e0 \u0111\u1ed9 l\u1edbn t\u1ea3i tr\u1ecdng<\/h3>\n<ul>\n<li><strong>R\u00fat tr\u1ee5c (k\u00e9o ra)<\/strong> \u2192 \u0103n kh\u1edbp d\u00e0i h\u01a1n, ren th\u00f4 h\u01a1n, \u0103n kh\u1edbp to\u00e0n b\u1ed9 ren<\/li>\n<li><strong>Tr\u01b0\u1ee3t<\/strong> \u2192 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n, \u01b0u ti\u00ean d\u00f9ng bu l\u00f4ng xuy\u00ean qua thay v\u00ec v\u00edt<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng rung \u0111\u1ed9ng<\/strong> \u2192 ren nh\u1ecf, \u0111ai \u1ed1c nyloc, h\u1ee3p ch\u1ea5t kh\u00f3a ren (v\u00ed d\u1ee5 Loctite 243), ho\u1eb7c ch\u1ed1t c\u00f3 m\u00f4-men xo\u1eafn duy tr\u00ec<\/li>\n<\/ul>\n<p>M\u1ed9t quy t\u1eafc th\u1ef1c t\u1ebf ph\u1ed5 bi\u1ebfn: \u0111\u1ed1i v\u1edbi li\u00ean k\u1ebft g\u1ed7 k\u1ebft c\u1ea5u, s\u1eed d\u1ee5ng v\u00edt c\u00f3 \u0111\u1ed9 xuy\u00ean th\u00e2n \u00edt nh\u1ea5t 10\u00d7 \u0111\u01b0\u1eddng k\u00ednh v\u00edt v\u00e0o v\u1eadt gi\u1eef. \u0110\u1ed1i v\u1edbi v\u00edt #10 (th\u00e2n 0.190\u2033), ngh\u0129a l\u00e0 \u00edt nh\u1ea5t 1.9\u2033 \u0103n kh\u1edbp ren.<\/p>\n<h3>B\u01b0\u1edbc 3: \u0110\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac m\u00f4i tr\u01b0\u1eddng<\/h3>\n<p>M\u00f4i tr\u01b0\u1eddng c\u00e0ng kh\u1eafc nghi\u1ec7t, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 l\u1edbp ph\u1ee7 c\u00e0ng quan tr\u1ecdng:<\/p>\n<ul>\n<li><strong>Trong nh\u00e0, kh\u00f4 r\u00e1o<\/strong> \u2192 th\u00e9p cacbon m\u1ea1 k\u1ebdm l\u00e0 ph\u00f9 h\u1ee3p<\/li>\n<li><strong>Ngo\u00e0i tr\u1eddi \/ ti\u1ebfp x\u00fac th\u1eddi ti\u1ebft<\/strong> \u2192 m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, th\u00e9p kh\u00f4ng g\u1ec9 304, ho\u1eb7c v\u00edt ngo\u00e0i tr\u1eddi c\u00f3 l\u1edbp ph\u1ee7<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng bi\u1ec3n (phun mu\u1ed1i, ng\u00e2m n\u01b0\u1edbc)<\/strong> \u2192 ch\u1ec9 d\u00f9ng th\u00e9p kh\u00f4ng g\u1ec9 316; t\u01b0\u01a1ng \u0111\u01b0\u01a1ng A4-80 theo h\u1ec7 m\u00e9t<\/li>\n<li><strong>H\u00f3a ch\u1ea5t ho\u1eb7c m\u00f4i tr\u01b0\u1eddng axit<\/strong> \u2192 ki\u1ec3m tra kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00f3a ch\u1ea5t c\u1ee5 th\u1ec3 cho t\u1eebng lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 4: Ch\u1ecdn lo\u1ea1i \u0111\u1ea7u v\u00edt ph\u00f9 h\u1ee3p v\u1edbi d\u1ee5ng c\u1ee5 v\u00e0 m\u00f4-men xo\u1eafn<\/h3>\n<p>Lo\u1ea1i \u0111\u1ea7u v\u00edt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 l\u1eafp \u0111\u1eb7t, kh\u1ea3 n\u0103ng ch\u1ed1ng tr\u01b0\u1ee3t v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n:<\/p>\n<ul>\n<li><strong>\u0110\u1ea7u ch\u1eef th\u1eadp (PH)<\/strong>: ph\u1ed5 bi\u1ebfn, d\u1ec5 b\u1ecb tr\u01b0\u1ee3t khi si\u1ebft l\u1ef1c cao \u2014 kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho l\u1eafp r\u00e1p s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t<\/li>\n<li><strong>\u0110\u1ea7u sao (T\/TX)<\/strong>: kh\u1ea3 n\u0103ng ch\u1ed1ng tr\u01b0\u1ee3t tuy\u1ec7t v\u1eddi, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u1eafp r\u00e1p \u00f4 t\u00f4 v\u00e0 \u0111i\u1ec7n t\u1eed; <a href=\"https:\/\/www.itwfips.com\/\" target=\"_blank\" rel=\"noopener\">H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt v\u00edt Torx t\u1eeb Illinois Tool Works<\/a> cho th\u1ea5y gi\u1ea3m 5\u201310 l\u1ea7n hi\u1ec7n t\u01b0\u1ee3ng tu\u00f4n \u0111\u1ea7u v\u00edt so v\u1edbi \u0111\u1ea7u ch\u1eef th\u1eadp trong d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p t\u1ef1 \u0111\u1ed9ng<\/li>\n<li><strong>\u0110\u1ea7u l\u1ee5c gi\u00e1c (Allen \/ SHCS)<\/strong>: ch\u1ecbu l\u1ef1c si\u1ebft cao, c\u1ea7n kh\u00f4ng gian ph\u00eda tr\u00ean \u0111\u1ea7u v\u00edt \u2014 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong m\u00e1y m\u00f3c<\/li>\n<li><strong>\u0110\u1ea7u vu\u00f4ng\/Robertson<\/strong>: g\u1ea7n nh\u01b0 kh\u00f4ng b\u1ecb tr\u01b0\u1ee3t, c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn trong x\u00e2y d\u1ef1ng t\u1ea1i Vi\u1ec7t Nam<\/li>\n<li><strong>D\u1ea5u d\u1eadp<\/strong>: \u0111\u01a1n gi\u1ea3n, y\u1ebfu khi d\u00f9ng v\u1edbi d\u1ee5ng c\u1ee5 \u0111i\u1ec7n \u2014 th\u01b0\u1eddng d\u00f9ng cho v\u00edt \u0111i\u1ec1u ch\u1ec9nh v\u00e0 ph\u1ee5c ch\u1ebf \u0111\u1ed3 c\u1ed5<\/li>\n<\/ul>\n<hr \/>\n<h2>\u1ee8ng d\u1ee5ng trong ng\u00e0nh: N\u01a1i v\u00edt quy\u1ebft \u0111\u1ecbnh s\u1ea3n xu\u1ea5t<\/h2>\n<h3>\u0110i\u1ec7n t\u1eed v\u00e0 L\u1eafp r\u00e1p PCB<\/h3>\n<p>V\u00edt m\u00e1y si\u00eau nh\u1ecf \u2014 M2, M2.5, #0-80, #2-56 \u2014 c\u1ed1 \u0111\u1ecbnh bo m\u1ea1ch l\u00ean ch\u00e2n \u0111\u1ee1 v\u00e0 gi\u1eef t\u1ea3n nhi\u1ec7t cho IC. Th\u01b0\u1eddng l\u00e0m b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c m\u1ea1 k\u1ebdm. Y\u00eau c\u1ea7u l\u1ef1c si\u1ebft r\u1ea5t ch\u1eb7t (th\u01b0\u1eddng 0.2\u20130.5 N\u00b7m) v\u00ec si\u1ebft qu\u00e1 l\u1ef1c s\u1ebd l\u00e0m n\u1ee9t bo m\u1ea1ch v\u00e0 tu\u00f4n ren ch\u00e8n tr\u00ean bo. H\u1ea7u h\u1ebft d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u1ef1c si\u1ebft ch\u00ednh x\u00e1c thay v\u00ec m\u00e1y b\u1eaft v\u00edt ly h\u1ee3p c\u1ed1 \u0111\u1ecbnh.<\/p>\n<h3>S\u1ea3n xu\u1ea5t \u00f4 t\u00f4<\/h3>\n<p>S\u1ea3n xu\u1ea5t \u00f4 t\u00f4 s\u1eed d\u1ee5ng h\u00e0ng tri\u1ec7u chi ti\u1ebft li\u00ean k\u1ebft cho m\u1ed7i xe \u2014 v\u00edt, bu l\u00f4ng v\u00e0 k\u1eb9p. C\u00e1c v\u1ecb tr\u00ed l\u1eafp gh\u00e9p th\u00e2n xe quan tr\u1ecdng d\u00f9ng v\u00edt m\u00e1y ren m\u1ecbn h\u1ec7 m\u00e9t (M6\u00d71.0, M8\u00d71.25) b\u1eb1ng th\u00e9p cacbon m\u1ea1 k\u1ebdm. L\u1eafp r\u00e1p \u0111\u1ed9ng c\u01a1 hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng d\u00f9ng ty ren thay v\u00ec v\u00edt cho bu l\u00f4ng \u0111\u1ea7u m\u00e1y (ph\u00e2n b\u1ed5 l\u1ef1c si\u1ebft \u0111\u1ec1u h\u01a1n), nh\u01b0ng v\u00edt cacte d\u1ea7u, bu l\u00f4ng n\u1eafp \u0111\u1eady v\u00e0 v\u00edt g\u1eafn c\u1ea3m bi\u1ebfn v\u1eabn s\u1eed d\u1ee5ng s\u1ed1 l\u01b0\u1ee3ng l\u1edbn. L\u1edbp m\u1ea1 k\u1ebdm-niken l\u00e0 ti\u00eau chu\u1ea9n d\u01b0\u1edbi n\u1eafp capo \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n h\u00f3a v\u00e0 ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n<h3>V\u00edt ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5<\/h3>\n<p>C\u00f3 l\u1ebd l\u00e0 \u1ee9ng d\u1ee5ng v\u00edt \u0111\u00f2i h\u1ecfi kh\u1eaft khe nh\u1ea5t. V\u00edt h\u00e0ng kh\u00f4ng (theo ti\u00eau chu\u1ea9n AS) \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb h\u1ee3p kim si\u00eau b\u1ec1n ch\u1ee9a niken (Inconel 718, A-286), titan (Ti-6Al-4V), ho\u1eb7c th\u00e9p h\u1ee3p kim si\u00eau b\u1ec1n (H11, 4340). M\u1ed7i chi ti\u1ebft li\u00ean k\u1ebft \u0111\u1ec1u truy xu\u1ea5t \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn v\u1eadt li\u1ec7u. D\u1ea1ng ren th\u01b0\u1eddng l\u00e0 UNJ (g\u1ed1c bo tr\u00f2n ki\u1ec3m so\u00e1t) \u0111\u1ec3 t\u0103ng tu\u1ed5i th\u1ecd m\u1ecfi b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t s\u1eafc c\u1ea1nh \u1edf g\u1ed1c ren \u2014 chi ti\u1ebft n\u00e0y c\u1ef1c k\u1ef3 quan tr\u1ecdng khi ch\u1ecbu t\u1ea3i chu k\u1ef3. Theo <a href=\"https:\/\/standards.nasa.gov\/\" target=\"_blank\" rel=\"noopener\">Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt v\u00edt c\u1ee7a NASA trong NASA-STD-5020<\/a>, \u1ee9ng su\u1ea5t d\u01b0 t\u1ea1i g\u1ed1c ren do c\u00e1n (so v\u1edbi c\u1eaft) c\u00f3 th\u1ec3 t\u0103ng tu\u1ed5i th\u1ecd m\u1ecfi l\u00ean 20\u201350%.<\/p>\n<h3>K\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng v\u00e0 k\u1ebft c\u1ea5u<\/h3>\n<p>T\u1eeb v\u00edt th\u1ea1ch cao (#6 \u00d7 1-1\/4\u2033 \u0111\u1ea7u loe) \u0111\u1ebfn v\u00edt LedgerLOK k\u1ebft c\u1ea5u (\u0111\u1ea7u l\u1ee5c gi\u00e1c 1\/2\u2033, \u0111\u01b0\u1ee3c c\u1ea5p m\u00e3 cho li\u00ean k\u1ebft d\u1ea7m v\u1edbi m\u00e9p s\u00e0n), v\u00edt \u0111\u00e3 thay th\u1ebf ph\u1ea7n l\u1edbn \u0111inh trong x\u00e2y d\u1ef1ng nh\u00e0 \u1edf m\u1edbi. V\u00edt k\u1ebft c\u1ea5u c\u00f3 ch\u1ee9ng nh\u1eadn ICC-ESR quy \u0111\u1ecbnh b\u1ea3ng t\u1ea3i tr\u1ecdng cho ph\u00e9p \u2014 kh\u00f4ng c\u1ea7n t\u00ednh to\u00e1n k\u1ef9 thu\u1eadt, ch\u1ec9 c\u1ea7n l\u00e0m theo b\u1ea3ng cho t\u1eebng \u1ee9ng d\u1ee5ng. Vi\u1ec7c chuy\u1ec3n t\u1eeb \u0111inh sang v\u00edt trong t\u01b0\u1eddng ch\u1ecbu c\u1eaft l\u00e0 ch\u1ee7 \u0111\u1ec1 tranh lu\u1eadn th\u1ef1c s\u1ef1 v\u1ec1 k\u1ebft c\u1ea5u: \u0111inh trong t\u01b0\u1eddng ch\u1ecbu c\u1eaft v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 \u0111\u1ed9 d\u1ebbo (kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng tr\u01b0\u1edbc khi g\u00e3y), trong khi v\u00edt v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c r\u00fat.<\/p>\n<hr \/>\n<h2>Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai: V\u00edt trong n\u0103m 2026 v\u00e0 xa h\u01a1n<\/h2>\n<h3>Ph\u1ee5 ki\u1ec7n th\u00f4ng minh v\u00e0 gi\u00e1m s\u00e1t l\u1ef1c si\u1ebft<\/h3>\n<p>V\u00edt c\u1ea3m bi\u1ebfn nh\u00fang \u2014 v\u1edbi c\u1ea3m bi\u1ebfn \u0111o \u1ee9ng su\u1ea5t v\u00e0 Bluetooth ho\u1eb7c RFID th\u1ee5 \u0111\u1ed9ng trong \u0111\u1ea7u \u2014 \u0111ang gia nh\u1eadp th\u1ecb tr\u01b0\u1eddng b\u1ea3o tr\u00ec h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 n\u0103ng l\u01b0\u1ee3ng gi\u00f3. Nh\u1eefng \u201cch\u1ed1t th\u00f4ng minh\u201d n\u00e0y cho ph\u00e9p gi\u00e1m s\u00e1t l\u1ef1c si\u1ebft bul\u00f4ng theo th\u1eddi gian th\u1ef1c m\u00e0 kh\u00f4ng c\u1ea7n si\u1ebft l\u1ea1i. Th\u1ecb tr\u01b0\u1eddng ch\u1ed1t th\u00f4ng minh to\u00e0n c\u1ea7u \u0111\u01b0\u1ee3c \u0111\u1ecbnh gi\u00e1 kho\u1ea3ng 1.740 tri\u1ec7u USD v\u00e0o n\u0103m 2024, theo <a href=\"https:\/\/www.mordorintelligence.com\/industry-reports\/fasteners-market\" target=\"_blank\" rel=\"noopener\">b\u00e1o c\u00e1o th\u1ecb tr\u01b0\u1eddng ng\u00e0nh ch\u1ed1t c\u1ee7a Mordor Intelligence<\/a>, v\u1edbi ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o l\u00e0 nh\u1eefng \u0111\u1ed9ng l\u1ef1c ch\u00ednh th\u00fac \u0111\u1ea9y t\u0103ng tr\u01b0\u1edfng.<\/p>\n<h3>V\u00edt gia c\u00f4ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p c\u1ed9ng th\u00eam<\/h3>\n<p>Kim lo\u1ea1i AM (h\u00e0n laser ch\u1ecdn l\u1ecdc, h\u00e0n electron beam) hi\u1ec7n s\u1ea3n xu\u1ea5t c\u00e1c ch\u1ed1t titanium v\u00e0 Inconel \u0111\u1ea1t ti\u00eau chu\u1ea9n bay cho c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 y t\u1ebf quy m\u00f4 nh\u1ecf. V\u00edt AM c\u00f3 th\u1ec3 c\u00f3 c\u00e1c k\u00eanh n\u1ed9i b\u1ed9, c\u1ea5u tr\u00fac m\u1ea1ng l\u01b0\u1edbi, v\u00e0 h\u00ecnh d\u1ea1ng t\u1ed1i \u01b0u h\u00f3a topology kh\u00f4ng th\u1ec3 s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u00e9n l\u1ea1nh. Chi ph\u00ed cho m\u1ed7i b\u1ed9 ph\u1eadn v\u1eabn cao h\u01a1n 10\u201350 l\u1ea7n so v\u1edbi ch\u1ed1t th\u00f4ng th\u01b0\u1eddng, h\u1ea1n ch\u1ebf vi\u1ec7c \u1ee9ng d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t cao cho \u0111\u1ebfn nay.<\/p>\n<h3>C\u1ea3i ti\u1ebfn v\u1ec1 l\u1edbp ph\u1ee7<\/h3>\n<p>L\u1edbp ph\u1ee7 k\u1ebdm ph\u1ee7 d\u1ea1ng b\u1ed9t (Geomet, Deltaprotekt, Dorrlube) ti\u1ebfp t\u1ee5c thay th\u1ebf qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng v\u00e0 m\u1ea1 \u0111i\u1ec7n trong ti\u00eau chu\u1ea9n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 do l\u1edbp m\u00e0ng m\u1ecfng, \u0111\u1ed3ng nh\u1ea5t, kh\u00f4ng g\u00e2y gi\u00f2n do hydrogen, v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng x\u1ecbt mu\u1ed1i v\u01b0\u1ee3t tr\u1ed9i. C\u00e1c l\u1edbp ph\u1ee7 nanocomposite (ZnNi + h\u1ea1t nano ceramic) \u0111ang trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n h\u1ee9a h\u1eb9n kh\u1ea3 n\u0103ng ch\u1ecbu x\u1ecbt mu\u1ed1i tr\u00ean 3000 gi\u1edd tr\u00ean th\u00e9p carbon \u2014 ph\u00f9 h\u1ee3p cho v\u00edt h\u1ea1 t\u1ea7ng ngo\u00e0i kh\u01a1i.<\/p>\n<h3>V\u00edt x\u01b0\u01a1ng t\u1ef1 ti\u00eau h\u1ee7y sinh h\u1ecdc<\/h3>\n<p>Ph\u1eabu thu\u1eadt ch\u1ec9nh h\u00ecnh ng\u00e0y c\u00e0ng s\u1eed d\u1ee5ng v\u00edt l\u00e0m t\u1eeb poly-L-lactic acid (PLLA), acid polyglycolic (PGA), ho\u1eb7c h\u1ee3p kim magi\u00ea c\u00f3 kh\u1ea3 n\u0103ng tan ho\u1eb7c ti\u00eau h\u1ee7y trong c\u01a1 th\u1ec3 sau 12\u201324 th\u00e1ng. \u0110i\u1ec1u n\u00e0y lo\u1ea1i b\u1ecf c\u1ea7n thi\u1ebft ph\u1ea3i ph\u1eabu thu\u1eadt th\u1ee9 hai \u0111\u1ec3 l\u1ea5y b\u1ecf ph\u1ea7n c\u1ee9ng kim lo\u1ea1i tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 gi\u1ea3m nguy c\u01a1 nhi\u1ec5m tr\u00f9ng li\u00ean quan \u0111\u1ebfn c\u1ea5y gh\u00e9p. V\u00edt magi\u00ea \u0111\u1eb7c bi\u1ec7t \u0111\u1ea7y h\u1ee9a h\u1eb9n: ch\u00fang ph\u00e2n h\u1ee7y d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c v\u00e0 s\u1ea3n ph\u1ea9m ph\u00e2n h\u1ee7y (d\u01b0 hydroxide magi\u00ea) t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc v\u00e0 th\u1eadm ch\u00ed c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 t\u1ea1o x\u01b0\u01a1ng.<\/p>\n<hr \/>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p: \u0110\u1ecbnh ngh\u0129a v\u1ec1 v\u00edt \u2014 C\u00e1c c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c tr\u1ea3 l\u1eddi<\/h2>\n<p><strong>V\u00edt \u0111\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0 g\u00ec?<\/strong><br \/>\nV\u00edt l\u00e0 m\u1ed9t lo\u1ea1i ch\u1ed1t c\u00f3 ren, chuy\u1ec3n \u0111\u1ed5i xoay th\u00e0nh l\u1ef1c k\u1eb9p tuy\u1ebfn t\u00ednh. N\u00f3 k\u1ebft n\u1ed1i c\u00e1c v\u1eadt li\u1ec7u b\u1eb1ng c\u00e1ch ren v\u00e0o ch\u00fang ho\u1eb7c g\u1eafn v\u00e0o \u0111ai \u1ed1c, v\u00e0 vi\u1ec7c si\u1ebft ch\u1eb7t t\u1ea1o ra l\u1ef1c c\u0103ng ch\u1ed1ng t\u00e1ch r\u1eddi. N\u00f3i r\u1ed9ng h\u01a1n, n\u00f3 l\u00e0 m\u1ed9t m\u00e1y \u0111\u01a1n gi\u1ea3n \u2014 m\u1ed9t m\u1eb7t ph\u1eb3ng nghi\u00eang xo\u1eafn th\u00e0nh h\u00ecnh xo\u1eafn \u1ed1c \u2014 d\u00f9ng \u0111\u1ec3 truy\u1ec1n l\u1ef1c ho\u1eb7c chuy\u1ec3n \u0111\u1ed9ng.<\/p>\n<p><strong>V\u00edt kh\u00e1c g\u00ec so v\u1edbi bu l\u00f4ng?<\/strong><br \/>\nV\u00edt ren tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u ho\u1eb7c l\u1ed7 \u0111\u00e3 khoan; bu l\u00f4ng \u0111i qua c\u00e1c l\u1ed7 c\u00f3 s\u1eb5n v\u00e0 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh b\u1eb1ng \u0111ai \u1ed1c \u1edf ph\u00eda kia. Trong th\u1ef1c t\u1ebf, ranh gi\u1edbi n\u00e0y m\u1edd nh\u1ea1t \u2014 v\u00edt d\u00f9ng trong m\u00e1y m\u00f3c v\u1edbi \u0111ai \u1ed1c ho\u1ea1t \u0111\u1ed9ng nh\u01b0 bu l\u00f4ng \u2014 nh\u01b0ng ti\u00eau chu\u1ea9n ASME B18 s\u1eed d\u1ee5ng ti\u00eau ch\u00ed n\u00e0y v\u1ec1 s\u1ef1 ti\u1ebfp x\u00fac so v\u1edbi khe h\u1edf \u0111\u1ec3 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng.<\/p>\n<p><strong>V\u00edt trong khoa h\u1ecdc (m\u00e1y \u0111\u01a1n gi\u1ea3n)?<\/strong><br \/>\nTrong c\u01a1 h\u1ecdc, v\u00edt l\u00e0 m\u1ed9t trong s\u00e1u m\u00e1y \u0111\u01a1n gi\u1ea3n c\u1ed5 \u0111i\u1ec3n. N\u00f3 \u00e1p d\u1ee5ng nguy\u00ean l\u00fd c\u1ee7a m\u1eb7t ph\u1eb3ng nghi\u00eang: l\u1ee3i th\u1ebf c\u01a1 h\u1ecdc b\u1eb1ng (2\u03c0 \u00d7 chi\u1ec1u d\u00e0i c\u1ee7a tay quay) chia cho b\u01b0\u1edbc ren. B\u01b0\u1edbc ren nh\u1ecf h\u01a1n (kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c ren nh\u1ecf h\u01a1n) cho l\u1ee3i th\u1ebf c\u01a1 h\u1ecdc l\u1edbn h\u01a1n, ngh\u0129a l\u00e0 c\u1ea7n \u00edt l\u1ef1c quay h\u01a1n \u0111\u1ec3 t\u1ea1o ra l\u1ef1c tr\u1ee5c nh\u1ea5t \u0111\u1ecbnh \u2014 nh\u01b0ng \u0111\u1ed5i l\u1ea1i ph\u1ea3i quay nhi\u1ec1u v\u00f2ng h\u01a1n.<\/p>\n<p><strong>T\u1ea1i sao v\u00edt gi\u1eef ch\u1eafc h\u01a1n \u0111inh?<\/strong><br \/>\nV\u00edt d\u1ef1a v\u00e0o s\u1ef1 m\u00f3c ren v\u1edbi v\u1eadt li\u1ec7u n\u1ec1n, t\u1ea1o ra kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00fat cao h\u01a1n nhi\u1ec1u so v\u1edbi l\u1ef1c ma s\u00e1t gi\u1eef c\u1ee7a \u0111inh. Ren h\u00ecnh xo\u1eafn \u1ed1c t\u1ea1o ra m\u1ed9t li\u00ean k\u1ebft c\u01a1 h\u1ecdc m\u00e0 ph\u1ea3i \u201cv\u1eb7n\u201d m\u1edbi th\u1ea5t b\u1ea1i, ch\u1ee9 kh\u00f4ng ch\u1ec9 k\u00e9o ra. Trong g\u1ed7 x\u00e2y d\u1ef1ng, m\u1ed9t v\u00edt 3 inch (kho\u1ea3ng 7.6cm) k\u00edch th\u01b0\u1edbc #10 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n \u0111inh th\u01b0\u1eddng 16d kho\u1ea3ng 2\u20133 l\u1ea7n v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00fat.<\/p>\n<p><strong>\u00dd ngh\u0129a c\u1ee7a b\u01b0\u1edbc ren trong v\u00edt l\u00e0 g\u00ec?<\/strong><br \/>\nB\u01b0\u1edbc ren l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u1ec9nh ren li\u1ec1n k\u1ec1, \u0111\u01b0\u1ee3c \u0111o song song v\u1edbi tr\u1ee5c v\u00edt. Tr\u00ean v\u00edt ti\u00eau chu\u1ea9n M8\u00d71.25 h\u1ec7 m\u00e9t, b\u01b0\u1edbc ren = 1,25mm. Tr\u00ean v\u00edt 1\/4-20 UNC, b\u01b0\u1edbc ren = 1\/20 inch = 0,05\u2033. B\u01b0\u1edbc ren nh\u1ecf h\u01a1n (s\u1ed1 nh\u1ecf h\u01a1n) = nhi\u1ec1u v\u00f2ng ren tr\u00ean m\u1ed7i inch\/mm h\u01a1n, l\u1ef1c k\u1eb9p cao h\u01a1n, kh\u1ea3 n\u0103ng ch\u1ed1ng rung t\u1ed1t h\u01a1n, nh\u01b0ng t\u1ed1c \u0111\u1ed9 v\u1eb7n ch\u1eadm h\u01a1n.<\/p>\n<p><strong>T\u00f4i n\u00ean s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u v\u00edt n\u00e0o ngo\u00e0i tr\u1eddi?<\/strong><br \/>\n\u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi kh\u00f4ng ti\u1ebfp x\u00fac v\u1edbi bi\u1ec3n, h\u00e3y s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 304 (18-8) ho\u1eb7c th\u00e9p cacbon m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng. \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng bi\u1ec3n (g\u1ea7n bi\u1ec3n, b\u1ebfn t\u00e0u, kh\u00f4ng kh\u00ed m\u1eb7n), h\u00e3y s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 316. Tr\u00e1nh s\u1eed d\u1ee5ng v\u00edt m\u1ea1 k\u1ebdm \u0111i\u1ec7n ngo\u00e0i tr\u1eddi \u2014 ch\u00fang s\u1ebd h\u1ecfng trong v\u00f2ng 1\u20132 m\u00f9a \u1edf c\u00e1c m\u1ed1i n\u1ed1i l\u1ed9 thi\u00ean. Kh\u00f4ng bao gi\u1edd k\u1ebft h\u1ee3p v\u00edt m\u1ea1 k\u1ebdm ho\u1eb7c th\u00e9p cacbon v\u1edbi g\u1ed7 x\u1eed l\u00fd \u00e1p l\u1ef1c c\u00f3 ch\u1ee9a \u0111\u1ed3ng azole (CA-B, MCA) \u2014 \u0111\u1ed3ng s\u1ebd \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a c\u1ee7a th\u00e9p.<\/p>\n<p><strong>V\u00edt t\u1ef1 khoan l\u00e0 g\u00ec?<\/strong><br \/>\nV\u00edt t\u1ef1 khoan s\u1ebd c\u1eaft ho\u1eb7c t\u1ea1o ren ri\u00eang khi \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o, lo\u1ea1i b\u1ecf nhu c\u1ea7u t\u1ea1o ren tr\u01b0\u1edbc. Lo\u1ea1i c\u1eaft ren (lo\u1ea1i AB, B) s\u1ebd c\u1eaft b\u1ecf v\u1eadt li\u1ec7u; lo\u1ea1i t\u1ea1o ren s\u1ebd \u00e9p v\u1eadt li\u1ec7u, t\u1ea1o ra ren ch\u1eafc ch\u1eafn h\u01a1n v\u00e0 kh\u00f4ng c\u00f3 m\u1ea1t. C\u1ea3 hai ch\u1ec9 c\u1ea7n khoan l\u1ed7 d\u1eabn (kh\u00f4ng c\u1ea7n l\u1ed7 \u0111\u00e3 ren) tr\u00ean v\u1eadt li\u1ec7u n\u1ec1n, v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho kim lo\u1ea1i t\u1ea5m, nh\u1ef1a v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u nh\u1eb9.<\/p>\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang k\u00edch th\u01b0\u1edbc v\u00edt?<\/strong><br \/>\nC\u00e2n nh\u1eafc ba y\u1ebfu t\u1ed1: (1) \u0111\u01b0\u1eddng k\u00ednh \u2014 ch\u1ecdn d\u1ef1a tr\u00ean t\u1ea3i tr\u1ecdng (l\u1edbn h\u01a1n = m\u1ea1nh h\u01a1n) v\u00e0 v\u1eadt li\u1ec7u n\u1ec1n (l\u1ed7 d\u1eabn n\u00ean b\u1eb1ng kho\u1ea3ng 75\u201385% \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf c\u1ee7a ren \u0111\u1ed1i v\u1edbi g\u1ed7); (2) chi\u1ec1u d\u00e0i \u2014 ren n\u00ean xuy\u00ean \u00edt nh\u1ea5t 1\u2033 v\u00e0o v\u1eadt li\u1ec7u gi\u1eef, l\u00fd t\u01b0\u1edfng l\u00e0 10 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh v\u00edt \u0111\u1ed1i v\u1edbi k\u1ebft c\u1ea5u; (3) lo\u1ea1i ren \u2014 ren th\u00f4 cho g\u1ed7 v\u00e0 v\u1eadt li\u1ec7u m\u1ec1m, ren m\u1ecbn cho kim lo\u1ea1i v\u00e0 c\u00e1c c\u1ee5m d\u1ec5 rung.<\/p>\n<p><img decoding=\"async\" alt=\"\u0111\u1ecbnh ngh\u0129a v\u00edt \u2014 h\u00ecnh \u1ea3nh t\u1ef7 l\u1ec7 16:9 hi\u1ec3n th\u1ecb c\u00e1c h\u1ed9p l\u01b0u tr\u1eef v\u00edt t\u1ed5 ch\u1ee9c trong m\u1ed9t c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t v\u1edbi \u00e1nh s\u00e1ng c\u00f4ng nghi\u1ec7p \u1ea5m \u00e1p\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/define-screw-closing.png\" \/><\/p>\n<hr \/>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>\u0110\u1ecbnh ngh\u0129a \u0111\u00fang v\u1ec1 v\u00edt l\u00e0 nh\u1eadn bi\u1ebft n\u00f3 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t chi\u1ebfc \u0111inh c\u00f3 xo\u1eafn. V\u00edt l\u00e0 m\u1ed9t chi ti\u1ebft c\u01a1 kh\u00ed \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u00ednh x\u00e1c, hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3 \u2014 v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu k\u00e9o, ch\u1ecbu c\u1eaft, ch\u1ed1ng rung, ch\u1ed1ng \u0103n m\u00f2n v\u00e0 m\u1ecfi \u2014 \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh ho\u00e0n to\u00e0n b\u1edfi h\u00ecnh h\u1ecdc ren, v\u1eadt li\u1ec7u, l\u1edbp ph\u1ee7 v\u00e0 chi\u1ec1u d\u00e0i \u0103n kh\u1edbp. D\u00f9 b\u1ea1n \u0111ang ch\u1ec9 \u0111\u1ecbnh ch\u1ed1t cho m\u1ed9t c\u1ee5m ph\u1ee5 trong ng\u00e0nh h\u00e0ng kh\u00f4ng, ch\u1ecdn v\u00edt cho s\u00e0n g\u1ed7 x\u1eed l\u00fd \u00e1p l\u1ef1c, hay ch\u1ecdn v\u00edt si\u00eau nh\u1ecf cho d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p PCB, nguy\u00ean t\u1eafc v\u1eabn nh\u01b0 nhau: ch\u1ecdn h\u00ecnh d\u1ea1ng ren ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u, t\u1ea3i tr\u1ecdng ph\u00f9 h\u1ee3p v\u1edbi h\u00ecnh h\u1ecdc, v\u00e0 m\u00f4i tr\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi l\u1edbp ph\u1ee7.<\/p>\n<p>Th\u1ecb tr\u01b0\u1eddng v\u00edt s\u1ea3n xu\u1ea5t ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n \u2014 th\u00f4ng minh h\u01a1n, m\u1ea1nh h\u01a1n, nh\u1eb9 h\u01a1n v\u00e0 ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n. Nh\u01b0ng nguy\u00ean l\u00fd v\u1eadt l\u00fd c\u01a1 b\u1ea3n v\u1eabn kh\u00f4ng thay \u0111\u1ed5i t\u1eeb th\u1eddi Archimedes: ren l\u00e0 m\u1ed9t m\u1eb7t ph\u1eb3ng nghi\u00eang, v\u00e0 m\u1ed7i \u0111\u1ed9 quay \u0111\u1ec1u chuy\u1ec3n h\u00f3a tr\u1ef1c ti\u1ebfp th\u00e0nh l\u1ef1c k\u1eb9p. \u0110\u00f3 v\u1eabn l\u00e0 s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i c\u01a1 h\u1ecdc tinh t\u1ebf nh\u1ea5t trong kho ph\u1ee5 ki\u1ec7n.<\/p>\n<p>S\u1eb5n s\u00e0ng t\u00ecm ngu\u1ed3n v\u00edt ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n? Duy\u1ec7t danh m\u1ee5c s\u1ea3n ph\u1ea9m t\u1ea1i productionscrews.com ho\u1eb7c li\u00ean h\u1ec7 \u0111\u1ed9i ng\u0169 kinh doanh k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i v\u1edbi y\u00eau c\u1ea7u th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ea1n.<\/p>\n<hr \/>\n<p><em>Ngu\u1ed3n tham kh\u1ea3o trong b\u00e0i vi\u1ebft n\u00e0y: <a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b18-fasteners\" target=\"_blank\" rel=\"noopener\">Ti\u00eau chu\u1ea9n ch\u1ed1t ASME B18<\/a> | <a href=\"https:\/\/en.wikipedia.org\/wiki\/Screw\" target=\"_blank\" rel=\"noopener\">V\u00edt \u2014 Wikipedia<\/a> | <a href=\"https:\/\/www.fpl.fs.usda.gov\/\" target=\"_blank\" rel=\"noopener\">D\u1eef li\u1ec7u r\u00fat v\u00edt c\u1ee7a Ph\u00f2ng th\u00ed nghi\u1ec7m S\u1ea3n ph\u1ea9m G\u1ed7<\/a> | <a href=\"https:\/\/standards.nasa.gov\/\" target=\"_blank\" rel=\"noopener\">Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt v\u00edt NASA-STD-5020<\/a> | <a href=\"https:\/\/www.mordorintelligence.com\/industry-reports\/fasteners-market\" target=\"_blank\" rel=\"noopener\">B\u00e1o c\u00e1o th\u1ecb tr\u01b0\u1eddng ch\u1ed1t Mordor Intelligence<\/a><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>V\u00edt l\u00e0 m\u1ed9t ch\u1ed1t c\u00f3 ren xo\u1eafn \u1ed1c, chuy\u1ec3n \u0111\u1ed9ng quay th\u00e0nh l\u1ef1c k\u1eb9p. H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 n\u00e0y \u0111\u1ecbnh ngh\u0129a v\u00edt tr\u00ean c\u00e1c kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt, v\u1eadt li\u1ec7u, ch\u1ee7ng lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng \u2014 v\u01b0\u1ee3t xa m\u1ecdi \u0111\u1ecbnh ngh\u0129a t\u1eeb \u0111i\u1ec3n.<\/p>","protected":false},"author":1,"featured_media":3607,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3611","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\/3611","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=3611"}],"version-history":[{"count":1,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/3611\/revisions"}],"predecessor-version":[{"id":3612,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/3611\/revisions\/3612"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media\/3607"}],"wp:attachment":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media?parent=3611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/categories?post=3611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/tags?post=3611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}