{"id":2611,"date":"2025-10-02T01:35:32","date_gmt":"2025-10-02T01:35:32","guid":{"rendered":"https:\/\/productionscrews.com\/"},"modified":"2025-10-02T01:35:32","modified_gmt":"2025-10-02T01:35:32","slug":"ultimate-guide-to-flange-screws-connection-engineering-principles-best-practices","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/ultimate-guide-to-flange-screws-connection-engineering-principles-best-practices\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn To\u00e0n Di\u1ec7n V\u1ec1 K\u1ebft N\u1ed1i V\u00edt B\u00edch: Nguy\u00ean T\u1eafc K\u1ef9 Thu\u1eadt & Th\u1ef1c H\u00e0nh T\u1ed1t Nh\u1ea5t"},"content":{"rendered":"

H\u01b0\u1edbng D\u1eabn To\u00e0n Di\u1ec7n V\u1ec1 K\u1ebft N\u1ed1i V\u00edt B\u00edch: Hi\u1ec3u C\u00e1ch Ch\u00fang Ho\u1ea1t \u0110\u1ed9ng<\/h2>\n

Gi\u1edbi thi\u1ec7u<\/h3>\n

K\u1ebft n\u1ed1i bu l\u00f4ng m\u1eb7t b\u00edch kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c b\u1ed9 ph\u1eadn gh\u00e9p l\u1ea1i v\u1edbi nhau. \u0110\u00f3 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf c\u1ea9n th\u1eadn nh\u1eb1m th\u1ef1c hi\u1ec7n m\u1ed9t nhi\u1ec7m v\u1ee5 ch\u00ednh: t\u1ea1o ra v\u00e0 duy tr\u00ec l\u1ef1c k\u1eb9p ch\u1eafc ch\u1eafn. L\u1ef1c n\u00e0y, g\u1ecdi l\u00e0 l\u1ef1c d\u1ef1 t\u1ea3i, l\u00e0 s\u1ee9c m\u1ea1nh \u1ea9n gi\u00fap \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i n\u1ed1i kh\u00f4ng r\u00f2 r\u1ec9 v\u00e0 gi\u1eef v\u1eefng tr\u01b0\u1edbc c\u00e1c l\u1ef1c t\u00e1c \u0111\u1ed9ng t\u1eeb b\u00ean ngo\u00e0i. Trong khi nhi\u1ec1u h\u01b0\u1edbng d\u1eabn ch\u1ec9 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ch\u1ecdn \u0111\u00fang c\u00e1c b\u1ed9 ph\u1eadn, b\u00e0i vi\u1ebft n\u00e0y \u0111i s\u00e2u h\u01a1n nhi\u1ec1u. Ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i th\u00edch c\u00e1ch c\u00e1c k\u1ebft n\u1ed1i n\u00e0y ho\u1ea1t \u0111\u1ed9ng th\u1ef1c s\u1ef1, t\u1eeb khoa h\u1ecdc c\u01a1 b\u1ea3n v\u1ec1 l\u1ef1c d\u1ef1 t\u1ea3i v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c khi s\u1eed d\u1ee5ng m\u00f4-men xo\u1eafn, \u0111\u1ebfn c\u00e1c ph\u01b0\u01a1ng ph\u00e1p si\u1ebft ch\u1eb7t t\u1ed1t h\u01a1n, ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n g\u00e2y h\u1ecfng h\u00f3c, v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p. M\u1ee5c ti\u00eau c\u1ee7a ch\u00fang t\u00f4i l\u00e0 gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 k\u1ef9 thu\u1eadt vi\u00ean bi\u1ebfn c\u00f4ng vi\u1ec7c l\u1eafp r\u00e1p c\u01a1 b\u1ea3n th\u00e0nh m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u00e1ng tin c\u1eady v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, \u0111\u1ea3m b\u1ea3o m\u1ed1i n\u1ed1i lu\u00f4n v\u1eefng ch\u1eafc.<\/p>\n

C\u00e1ch ho\u1ea1t \u0111\u1ed9ng th\u1ef1c s\u1ef1 c\u1ee7a Kh\u1edbp n\u1ed1i<\/h2>\n

\u0110\u1ec3 th\u00e0nh th\u1ea1o k\u1ebft n\u1ed1i v\u00edt flange, tr\u01b0\u1edbc ti\u00ean b\u1ea1n c\u1ea7n hi\u1ec3u v\u1ec1 khoa h\u1ecdc \u0111\u1eb1ng sau n\u00f3. C\u00e1ch v\u00edt m\u1edf r\u1ed9ng, m\u00f4-men xo\u1eafn b\u1ea1n \u00e1p d\u1ee5ng v\u00e0 ma s\u00e1t \u0111\u1ec1u ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 l\u00e0m cho qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p th\u00e0nh c\u00f4ng ho\u1eb7c th\u1ea5t b\u1ea1i. Hi\u1ec3u nh\u1eefng \u00fd t\u01b0\u1edfng c\u01a1 b\u1ea3n n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c k\u1ebft n\u1ed1i \u0111\u00e1ng tin c\u1eady v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 trong th\u1ef1c t\u1ebf.<\/p>\n

\"\u1ea3nh<\/a><\/p>\n

Ti\u1ec1n t\u1ea3i: Tr\u00e1i tim c\u1ee7a k\u1ebft n\u1ed1i<\/h3>\n

V\u1ec1 b\u1ea3n ch\u1ea5t, m\u1ed9t chi\u1ebfc v\u00edt trong k\u1ebft n\u1ed1i flange ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t chi\u1ebfc l\u00f2 xo r\u1ea5t ch\u00ednh x\u00e1c, r\u1ea5t c\u1ee9ng. Khi b\u1ea1n si\u1ebft ch\u1eb7t v\u00edt, n\u00f3 k\u00e9o d\u00e0i theo chi\u1ec1u d\u00e0i c\u1ee7a n\u00f3. Vi\u1ec7c k\u00e9o d\u00e0i n\u00e0y t\u1ea1o ra m\u1ed9t l\u1ef1c k\u00e9o b\u00ean trong v\u00edt, g\u1ecdi l\u00e0 l\u1ef1c tr\u01b0\u1edbc. L\u1ef1c c\u0103ng n\u1ed9i b\u1ed9 n\u00e0y k\u00e9o c\u00e1c m\u1eb7t b\u00edch l\u1ea1i g\u1ea7n nhau, t\u1ea1o ra l\u1ef1c gi\u1eef ch\u1eb7t gi\u00fap li\u00ean k\u1ebft ch\u1eafc ch\u1eafn. L\u1ef1c gi\u1eef ch\u1eb7t n\u00e0y l\u00e0 tr\u00e1i tim c\u1ee7a k\u1ebft n\u1ed1i.<\/p>\n

L\u1ef1c n\u00e0y ph\u1ea3i \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 v\u01b0\u1ee3t qua t\u1ea5t c\u1ea3 c\u00e1c l\u1ef1c b\u00ean ngo\u00e0i c\u1ed1 g\u1eafng k\u00e9o c\u00e1c b\u1ed9 ph\u1eadn ra kh\u1ecfi nhau, gi\u1eef \u00e1p l\u1ef1c b\u00ean trong v\u00e0 ng\u0103n ch\u1eb7n chuy\u1ec3n \u0111\u1ed9ng ngang g\u00e2y l\u1ecfng l\u1ebbo. Quy t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a thi\u1ebft k\u1ebf li\u00ean k\u1ebft b\u1eaft v\u00edt l\u00e0 l\u1ef1c n\u00e9n ban \u0111\u1ea7u lu\u00f4n ph\u1ea3i l\u1edbn h\u01a1n c\u00e1c t\u1ea3i tr\u1ecdng t\u1ed1i \u0111a m\u00e0 li\u00ean k\u1ebft s\u1ebd ph\u1ea3i ch\u1ecbu. N\u1ebfu c\u00e1c l\u1ef1c b\u00ean ngo\u00e0i tr\u1edf n\u00ean m\u1ea1nh h\u01a1n l\u1ef1c gi\u1eef ch\u1eb7t, c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a li\u00ean k\u1ebft s\u1ebd t\u00e1ch ra, to\u00e0n b\u1ed9 t\u1ea3i tr\u1ecdng s\u1ebd chuy\u1ec3n sang bu l\u00f4ng, v\u00e0 kh\u1ea3 n\u0103ng r\u00f2 r\u1ec9 ho\u1eb7c g\u00e3y do ch\u1ecbu t\u1ea3i l\u1eb7p l\u1ea1i s\u1ebd t\u0103ng l\u00ean r\u1ea5t nhi\u1ec1u.<\/p>\n

V\u1ea5n \u0111\u1ec1 v\u1ec1 M\u00f4-men xo\u1eafn v\u00e0 L\u1ef1c c\u0103ng<\/h3>\n

Trong khi t\u1ea3i tr\u01b0\u1edbc l\u00e0 \u0111i\u1ec1u ch\u00fang ta mu\u1ed1n, vi\u1ec7c s\u1eed d\u1ee5ng c\u1edd l\u00ea \u0111\u1ec3 \u00e1p d\u1ee5ng m\u00f4-men xo\u1eafn c\u1ee5 th\u1ec3 l\u00e0 c\u00e1ch ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 c\u1ed1 g\u1eafng \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3. Tuy nhi\u00ean, m\u1ed1i quan h\u1ec7 gi\u1eefa m\u00f4-men xo\u1eafn b\u1ea1n \u0111\u01b0a v\u00e0o v\u00e0 l\u1ef1c k\u00e9o bul\u00f4ng b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c l\u00e0 gi\u00e1n ti\u1ebfp, l\u00e3ng ph\u00ed v\u00e0 r\u1ea5t bi\u1ebfn \u0111\u1ed5i. N\u0103ng l\u01b0\u1ee3ng t\u1eeb m\u00f4-men xo\u1eafn b\u1ea1n \u00e1p d\u1ee5ng kh\u00f4ng \u0111i tr\u1ef1c ti\u1ebfp v\u00e0o t\u1ea3i tr\u01b0\u1edbc h\u1eefu \u00edch. Thay v\u00e0o \u0111\u00f3, ph\u1ea7n l\u1edbn n\u0103ng l\u01b0\u1ee3ng b\u1ecb ti\u00eau hao \u0111\u1ec3 ch\u1ed1ng l\u1ea1i ma s\u00e1t t\u1ea1i c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac kh\u00e1c nhau. Trong m\u1ed9t k\u1ebft n\u1ed1i th\u00e9p kh\u00f4ng b\u00f4i tr\u01a1n \u0111i\u1ec3n h\u00ecnh, ph\u00e2n ph\u1ed1i n\u0103ng l\u01b0\u1ee3ng kh\u00e1 l\u00e3ng ph\u00ed:<\/p>\n

    \n
  • Kho\u1ea3ng 50% c\u1ee7a m\u00f4-men xo\u1eafn \u0111\u1ea7u v\u00e0o ch\u1ed1ng l\u1ea1i ma s\u00e1t gi\u1eefa \u0111ai \u1ed1c ho\u1eb7c \u0111\u1ea7u v\u00edt quay v\u00e0 b\u1ec1 m\u1eb7t m\u1eb7t b\u00edch.<\/li>\n
  • V\u1ec1 40% ch\u1ed1ng ma s\u00e1t gi\u1eefa ren nam v\u00e0 ren n\u1eef.<\/li>\n
  • Ch\u1ec9 ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a m\u00f4-men xo\u1eafn 10% m\u1edbi th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c c\u00f3 \u00edch l\u00e0 k\u00e9o c\u0103ng bu l\u00f4ng \u0111\u1ec3 t\u1ea1o l\u1ef1c n\u00e9n ban \u0111\u1ea7u.<\/li>\n<\/ul>\n

    M\u1ed1i quan h\u1ec7 n\u00e0y \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua Nh\u00e2n T\u1ed1 \u0110ai \u1ed1c, hay c\u00f2n g\u1ecdi l\u00e0 H\u1ec7 s\u1ed1 K, trong ph\u01b0\u01a1ng tr\u00ecnh ph\u1ed5 bi\u1ebfn: T = KDF, trong \u0111\u00f3 T l\u00e0 m\u00f4-men xo\u1eafn, K l\u00e0 h\u1ec7 s\u1ed1 \u0111ai \u1ed1c, D l\u00e0 \u0111\u01b0\u1eddng k\u00ednh bu l\u00f4ng, v\u00e0 F l\u00e0 l\u1ef1c k\u00e9o tr\u01b0\u1edbc mong mu\u1ed1n. H\u1ec7 s\u1ed1 K l\u00e0 m\u1ed9t s\u1ed1 \u0111\u1ea1i di\u1ec7n cho t\u1ea5t c\u1ea3 c\u00e1c bi\u1ebfn s\u1ed1 ma s\u00e1t. \u0110\u1ed1i v\u1edbi c\u00e1c bu l\u00f4ng th\u00e9p kh\u00f4ng b\u00f4i tr\u01a1n \u0111i\u1ec3n h\u00ecnh, K c\u00f3 th\u1ec3 dao \u0111\u1ed9ng t\u1eeb 0,18 \u0111\u1ebfn 0,25. Kho\u1ea3ng dao \u0111\u1ed9ng r\u1ed9ng n\u00e0y cho th\u1ea5y v\u1ea5n \u0111\u1ec1 ch\u00ednh: c\u00f9ng m\u1ed9t l\u1ef1c m\u00f4-men xo\u1eafn \u0111\u1ea7u v\u00e0o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c k\u1ebft qu\u1ea3 l\u1ef1c k\u00e9o tr\u01b0\u1edbc r\u1ea5t kh\u00e1c nhau.<\/p>\n

    T\u1ea1i sao ma s\u00e1t l\u1ea1i l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 l\u1edbn nh\u01b0 v\u1eady<\/h3>\n

    V\u00ec 90% n\u0103ng l\u01b0\u1ee3ng m\u00f4-men xo\u1eafn b\u1ecb m\u1ea5t do ma s\u00e1t, b\u1ea5t k\u1ef3 s\u1ef1 thay \u0111\u1ed5i n\u00e0o v\u1ec1 ma s\u00e1t \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1ef1c si\u1ebft cu\u1ed1i c\u00f9ng. Ma s\u00e1t l\u00e0 k\u1ebb th\u00f9 ch\u00ednh c\u1ee7a vi\u1ec7c gi\u1eef ch\u1eb7t ch\u00ednh x\u00e1c v\u00e0 l\u1eb7p l\u1ea1i. Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ma s\u00e1t bao g\u1ed3m \u0111\u1ed9 m\u1ecbn c\u1ee7a b\u1ec1 m\u1eb7t, \u0111\u1ed9 c\u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u, l\u1edbp ph\u1ee7 ho\u1eb7c m\u1ea1, v\u00e0 t\u1ed1c \u0111\u1ed9 si\u1ebft ch\u1eb7t.<\/p>\n

    Trong m\u1ed9t b\u1ed9 l\u1eafp r\u00e1p kh\u00f4ng b\u00f4i tr\u01a1n ho\u1eb7c b\u00f4i tr\u01a1n k\u00e9m, qu\u00e1 tr\u00ecnh si\u1ebft ch\u1eb7t c\u00f3 th\u1ec3 b\u1ecb gi\u1eadt, g\u1ecdi l\u00e0 \u201cd\u00ednh tr\u01b0\u1ee3t\u201d. C\u00e1c b\u1ec1 m\u1eb7t t\u1ea1m th\u1eddi b\u00e1m ch\u1eb7t (d\u00ednh) r\u1ed3i tr\u01b0\u1ee3t (tr\u01b0\u1ee3t) khi l\u1ef1c xo\u1eafn \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng, g\u00e2y ra vi\u1ec7c si\u1ebft ch\u1eb7t x\u1ea3y ra theo nh\u1eefng nh\u1ea3y kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y khi\u1ebfn vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ef1c n\u00e9n ch\u00ednh x\u00e1c g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c.<\/p>\n

    S\u1eed d\u1ee5ng ch\u1ea5t b\u00f4i tr\u01a1n ph\u00f9 h\u1ee3p l\u00e0 c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 ki\u1ec3m so\u00e1t s\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u00e0y. M\u1ed9t lo\u1ea1i ch\u1ea5t b\u00f4i tr\u01a1n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0m gi\u1ea3m ma s\u00e1t (m\u1eb7c d\u00f9 th\u01b0\u1eddng l\u00e0m v\u1eady), nh\u01b0ng quan tr\u1ecdng h\u01a1n, n\u00f3 gi\u00fap h\u1ec7 s\u1ed1 ma s\u00e1t \u1ed5n \u0111\u1ecbnh. B\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t l\u1edbp ch\u1eafn \u1ed5n \u0111\u1ecbnh gi\u1eefa c\u00e1c b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac, ch\u1ea5t b\u00f4i tr\u01a1n thu h\u1eb9p ph\u1ea1m vi c\u1ee7a H\u1ec7 s\u1ed1 K (v\u00ed d\u1ee5, t\u1eeb 0.12 \u0111\u1ebfn 0.18 \u0111\u1ed1i v\u1edbi nhi\u1ec1u b\u1ed9 l\u1eafp r\u00e1p \u0111\u01b0\u1ee3c b\u00f4i tr\u01a1n), \u0111i\u1ec1u n\u00e0y gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ef1 bi\u1ebfn \u0111\u1ed5i trong gi\u00e1 tr\u1ecb l\u1ef1c si\u1ebft ch\u1eb7t tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t c\u1ee7a m\u1ed9t nh\u00f3m bu l\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t v\u1edbi c\u00f9ng m\u1ed9t m\u00f4-men xo\u1eafn. T\u00ednh d\u1ef1 \u0111o\u00e1n n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i m\u1eb7t b\u00edch nhi\u1ec1u bu l\u00f4ng.<\/p>\n

    \"C\u1eadn <\/p>\n

    Hi\u1ec3u v\u1ec1 thi\u1ebft k\u1ebf \u1ed1c v\u00edt flange<\/h2>\n

    Thi\u1ebft k\u1ebf v\u1eadt l\u00fd c\u1ee7a \u1ed1c flange t\u1ef1 n\u00f3 quy\u1ebft \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t c\u1ee7a n\u00f3 trong k\u1ebft n\u1ed1i. Vi\u1ec7c ch\u1ecdn gi\u1eefa flange r\u0103ng c\u01b0a ho\u1eb7c tr\u01a1n kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean; \u0111\u00f3 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng rung c\u1ee7a m\u1ed1i n\u1ed1i, t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00ean b\u1ec1 m\u1eb7t gh\u00e9p n\u1ed1i v\u00e0 c\u00e1ch ph\u00e2n b\u1ed5 l\u1ef1c k\u1eb9p \u0111\u1ec1u \u0111\u1eb7n.<\/p>\n

    \u1ed0c v\u00edt m\u1eb7t b\u00edch r\u0103ng c\u01b0a<\/h3>\n

    \u1ed0c v\u00edt m\u1eb7t b\u00edch r\u0103ng c\u01b0a c\u00f3 r\u0103ng c\u01b0a h\u01b0\u1edbng t\u00e2m \u0111\u01b0\u1ee3c gia c\u00f4ng v\u00e0o ph\u00eda d\u01b0\u1edbi c\u1ee7a m\u1eb7t b\u00edch t\u00edch h\u1ee3p. Nh\u1eefng r\u0103ng c\u01b0a n\u00e0y kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean; ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi m\u1ed9t g\u00f3c c\u1ee5 th\u1ec3 \u0111\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng kh\u00f3a ch\u1eb7t. Trong giai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng c\u1ee7a qu\u00e1 tr\u00ecnh si\u1ebft ch\u1eb7t, nh\u1eefng r\u0103ng s\u1eafc nh\u1ecdn, c\u1ee9ng n\u00e0y c\u1eafn v\u00e0o b\u1ec1 m\u1eb7t c\u1ee7a v\u1eadt li\u1ec7u li\u00ean k\u1ebft.<\/p>\n

    C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3. G\u00f3c c\u1ee7a c\u00e1c r\u0103ng c\u01b0a cho ph\u00e9p xoay d\u1ec5 d\u00e0ng h\u01a1n khi si\u1ebft ch\u1eb7t. Tuy nhi\u00ean, ch\u00fang t\u1ea1o ra l\u1ef1c c\u1ea3n c\u01a1 h\u1ecdc \u0111\u00e1ng k\u1ec3 ch\u1ed1ng l\u1ea1i s\u1ef1 quay ng\u01b0\u1ee3c ho\u1eb7c n\u1edbi l\u1ecfng. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra hi\u1ec7u \u1ee9ng \u201cc\u01a1 c\u1ea5u ratchet\u201d ho\u1eb7c kh\u00f3a ch\u1eb7t ho\u1ea1t \u0111\u1ed9ng r\u1ea5t t\u1ed1t ch\u1ed1ng l\u1ea1i c\u00e1c l\u1ef1c ngang g\u00e2y n\u1edbi l\u1ecfng do rung \u0111\u1ed9ng.<\/p>\n

    Ch\u00fang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t trong m\u00f4i tr\u01b0\u1eddng rung \u0111\u1ed9ng cao, nh\u01b0 tr\u00ean c\u00e1c kh\u1ed1i \u0111\u1ed9ng c\u01a1, gi\u00e1 \u0111\u1ee1 m\u00e1y m\u00f3c v\u00e0 khung c\u1ea5u tr\u00fac, n\u01a1i gi\u1eef l\u1ef1c k\u1eb9p d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a rung l\u1eafc li\u00ean t\u1ee5c l\u00e0 m\u1ed1i quan t\u00e2m ch\u00ednh. Tuy nhi\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng ch\u00fang \u0111i k\u00e8m v\u1edbi nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng. Ch\u1ee9c n\u0103ng kh\u00f3a t\u1ef1 nhi\u00ean g\u00e2y h\u01b0 h\u1ea1i b\u1ec1 m\u1eb7t gh\u00e9p n\u1ed1i, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t s\u01a1n, ph\u1ee7 ho\u1eb7c v\u1eadt li\u1ec7u m\u1ec1m nh\u01b0 nh\u00f4m. H\u01b0 h\u1ea1i b\u1ec1 m\u1eb7t n\u00e0y c\u0169ng c\u00f3 th\u1ec3 l\u00e0m cho vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ef1c n\u00e9n ch\u00ednh x\u00e1c h\u01a1n tr\u1edf n\u00ean kh\u00f3 kh\u0103n do ma s\u00e1t kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc t\u1eeb c\u00e1c r\u0103ng c\u01b0a c\u1eafm s\u00e2u v\u00e0o. H\u01a1n n\u1eefa, ch\u00fang kh\u00f4ng th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng nhi\u1ec1u l\u1ea7n, v\u00ec c\u00e1c c\u1ea1nh s\u1eafc c\u1ee7a r\u0103ng c\u01b0a c\u00f3 th\u1ec3 m\u00f2n \u0111i sau m\u1ed7i l\u1ea7n s\u1eed d\u1ee5ng, l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng kh\u00f3a ch\u1eb7t c\u1ee7a ch\u00fang.<\/p>\n

    \u1ed0c v\u00edt m\u1eb7t b\u00edch tr\u01a1n<\/h3>\n

    \u1ed0c v\u00edt m\u1eb7t b\u00edch tr\u01a1n, ho\u1eb7c kh\u00f4ng c\u00f3 r\u0103ng c\u01b0a, c\u00f3 b\u1ec1 m\u1eb7t ch\u1ecbu l\u1ef1c ph\u1eb3ng, kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n d\u01b0\u1edbi \u0111\u1ea7u v\u00edt. M\u1ee5c \u0111\u00edch thi\u1ebft k\u1ebf c\u1ee7a n\u00f3 ho\u00e0n to\u00e0n kh\u00e1c so v\u1edbi lo\u1ea1i c\u00f3 r\u0103ng c\u01b0a. Thay v\u00ec cung c\u1ea5p t\u00ednh n\u0103ng kh\u00f3a, m\u1eb7t b\u00edch tr\u01a1n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ph\u00e2n ph\u1ed1i l\u1ef1c k\u1eb9p tr\u00ean di\u1ec7n t\u00edch l\u1edbn nh\u1ea5t c\u00f3 th\u1ec3.<\/p>\n

    Vi\u1ec7c ph\u00e2n ph\u1ed1i l\u1ef1c r\u1ed9ng, \u0111\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng. N\u00f3 gi\u1ea3m thi\u1ec3u t\u1eadp trung \u1ee9ng su\u1ea5t tr\u00ean b\u1ec1 m\u1eb7t li\u00ean k\u1ebft, \u0111i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c v\u1eadt li\u1ec7u nh\u1ea1y c\u1ea3m ho\u1eb7c m\u1ec1m kh\u1ecfi b\u1ecb h\u01b0 h\u1ea1i. \u1ee8ng d\u1ee5ng ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 trong c\u00e1c m\u1ed1i gh\u00e9p k\u00edn b\u1eb1ng gio\u0103ng, nh\u01b0 trong h\u1ec7 th\u1ed1ng \u1ed1ng d\u1eabn, b\u00ecnh ch\u1ee9a \u00e1p l\u1ef1c v\u00e0 h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c. \u00c1p l\u1ef1c \u0111\u1ec1u v\u00e0 nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n b\u1ed9 m\u1eb7t gio\u0103ng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra v\u00e0 duy tr\u00ec m\u1ed9t ni\u00eam phong. M\u1ed9t \u1ed1c v\u00edt m\u1eb7t b\u00edch tr\u01a1n \u0111\u1ea3m b\u1ea3o s\u1ef1 n\u00e9n \u0111\u1ed3ng \u0111\u1ec1u n\u00e0y, ng\u0103n ch\u1eb7n vi\u1ec7c nghi\u1ec1n n\u00e1t c\u1ee5c b\u1ed9 c\u1ee7a gio\u0103ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c \u0111\u01b0\u1eddng r\u00f2 r\u1ec9.<\/p>\n

    V\u00ec ch\u00fang kh\u00f4ng c\u00f3 t\u00ednh n\u0103ng kh\u00f3a c\u01a1 h\u1ecdc, \u1ed1c v\u00edt m\u1eb7t b\u00edch tr\u01a1n ho\u00e0n to\u00e0n d\u1ef1a v\u00e0o l\u1ef1c n\u00e9n \u0111\u1ee7 v\u00e0 ma s\u00e1t t\u1ef1 nhi\u00ean trong ren \u0111\u1ec3 ch\u1ed1ng n\u1edbi l\u1ecfng. Trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 rung \u0111\u1ed9ng v\u1eeba ph\u1ea3i, ch\u00fang c\u00f3 th\u1ec3 c\u1ea7n th\u00eam c\u00e1c t\u00ednh n\u0103ng kh\u00f3a, nh\u01b0 ch\u1ea5t k\u1ebft d\u00ednh ren, \u0111\u0129a kh\u00f3a ho\u1eb7c d\u00e2y an to\u00e0n, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a li\u00ean k\u1ebft l\u00e2u d\u00e0i.<\/p>\n

    So s\u00e1nh c\u00e1c thi\u1ebft k\u1ebf<\/h3>\n

    Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa \u1ed1c v\u00edt m\u1eb7t b\u00edch r\u0103ng c\u01b0a v\u00e0 tr\u01a1n l\u00e0 s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i gi\u1eefa kh\u1ea3 n\u0103ng ch\u1ed1ng rung v\u00e0 ph\u00e2n ph\u1ed1i l\u1ef1c k\u1eb9p. Quy\u1ebft \u0111\u1ecbnh ph\u1ea3i d\u1ef1a tr\u00ean y\u00eau c\u1ea7u ch\u00ednh c\u1ee7a li\u00ean k\u1ebft c\u1ee5 th\u1ec3. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y cung c\u1ea5p so s\u00e1nh tr\u1ef1c ti\u1ebfp c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c l\u1ef1a ch\u1ecdn n\u00e0y.<\/p>\n

    B\u1ea3ng 1: \u0110\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t c\u1ee7a \u1ed1c v\u00edt m\u1eb7t b\u00edch r\u0103ng c\u01b0a v\u00e0 tr\u01a1n<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
    \u0110\u1eb7c \u0111i\u1ec3m<\/td>\n\u1ed0c v\u00edt m\u1eb7t b\u00edch r\u0103ng c\u01b0a<\/td>\n\u1ed0c v\u00edt m\u1eb7t b\u00edch tr\u01a1n<\/td>\n<\/tr>\n
    Ch\u1ee9c n\u0103ng Ch\u00ednh<\/strong><\/td>\nCh\u1ed1ng rung (Kh\u00f3a ch\u1eb7t)<\/td>\nPh\u00e2n ph\u1ed1i l\u1ef1c k\u1eb9p \u0111\u1ec1u<\/td>\n<\/tr>\n
    L\u1ecfng l\u1ebbo do rung \u0111\u1ed9ng<\/strong><\/td>\nCh\u1ed1ng rung xu\u1ea5t s\u1eafc<\/td>\nCh\u1ed1ng rung k\u00e9m \u0111\u1ebfn trung b\u00ecnh (Y\u00eau c\u1ea7u l\u1ef1c n\u00e9n cao)<\/td>\n<\/tr>\n
    \u1ea2nh h\u01b0\u1edfng b\u1ec1 m\u1eb7t<\/strong><\/td>\nG\u00e2y v\u1ebft l\u00f5m \/ v\u1ebft in tr\u00ean b\u1ec1 m\u1eb7t gh\u00e9p n\u1ed1i<\/td>\n\u1ea2nh h\u01b0\u1edfng b\u1ec1 m\u1eb7t t\u1ed1i thi\u1ec3u<\/td>\n<\/tr>\n
    \u1ee8ng d\u1ee5ng l\u00fd t\u01b0\u1edfng<\/strong><\/td>\n\u0110\u1ed9ng c\u01a1, m\u00e1y m\u00f3c rung, khung c\u1ea5u tr\u00fac<\/td>\nC\u00e1c m\u1ed1i gh\u00e9p k\u00edn b\u1eb1ng gio\u0103ng, m\u1eb7t b\u00edch \u1ed1ng, thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n
    C\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng<\/strong><\/td>\nH\u1ea1n ch\u1ebf (C\u00e1c r\u0103ng c\u01b0a c\u00f3 th\u1ec3 m\u00f2n \u0111i)<\/td>\nCao (N\u1ebfu kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng)<\/td>\n<\/tr>\n
    Ph\u00e2n t\u00e1n l\u1ef1c tr\u01b0\u1edbc t\u1ea3i<\/strong><\/td>\nC\u00f3 th\u1ec3 cao h\u01a1n do ma s\u00e1t t\u1eeb c\u00e1c r\u0103ng c\u01b0a<\/td>\nTh\u1ea5p h\u01a1n v\u00e0 d\u1ec5 d\u1ef1 \u0111o\u00e1n h\u01a1n khi b\u00f4i tr\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u00ean ti\u1ebfn \u0111\u1ec3 ki\u1ec3m so\u00e1t l\u1ef1c tr\u01b0\u1edbc t\u1ea3i<\/h2>\n

    Vi\u1ec7c c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t m\u1ed1i gh\u00e9p bul\u00f4ng \u0111\u00e1ng tin c\u1eady \u0111\u00f2i h\u1ecfi ph\u1ea3i v\u01b0\u1ee3t ra ngo\u00e0i vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn. M\u1ed9t m\u00f4-men xo\u1eafn quy \u0111\u1ecbnh ch\u1ec9 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u\u2014m\u1ed9t c\u00e1ch gi\u00e1n ti\u1ebfp \u0111\u1ec3 c\u1ed1 g\u1eafng \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau th\u1ef1c s\u1ef1 c\u1ee7a l\u1ef1c tr\u01b0\u1edbc t\u1ea3i ch\u00ednh x\u00e1c. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng, c\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i s\u1eed d\u1ee5ng c\u00e1c chi\u1ebfn l\u01b0\u1ee3c tinh vi h\u01a1n \u0111\u1ec3 ki\u1ec3m so\u00e1t l\u1ef1c c\u0103ng c\u1ee7a bul\u00f4ng v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n, \u0111\u1ed9 tin c\u1eady c\u1ee7a k\u1ebft n\u1ed1i.<\/p>\n

     <\/p>\n

    V\u01b0\u1ee3t qua gi\u1edbi h\u1ea1n c\u1ee7a quy \u0111\u1ecbnh m\u00f4-men xo\u1eafn<\/h3>\n

    Khi m\u1ed9t nh\u00f3m bul\u00f4ng trong m\u1eb7t b\u00edch \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t theo c\u00f9ng m\u1ed9t quy \u0111\u1ecbnh m\u00f4-men xo\u1eafn, l\u1ef1c tr\u01b0\u1edbc t\u1ea3i sinh ra trong t\u1eebng bul\u00f4ng s\u1ebd kh\u00f4ng gi\u1ed1ng nhau. S\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e2n t\u00e1n l\u1ef1c tr\u01b0\u1edbc t\u1ea3i. Do s\u1ef1 kh\u00e1c bi\u1ec7t kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi v\u1ec1 ma s\u00e1t t\u1eeb bul\u00f4ng n\u00e0y sang bul\u00f4ng kh\u00e1c, chi\u1ebfn l\u01b0\u1ee3c si\u1ebft ch\u1eb7t ch\u1ec9 d\u1ef1a v\u00e0o m\u00f4-men xo\u1eafn c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng d\u1eabn \u0111\u1ebfn ph\u00e2n t\u00e1n l\u1ef1c tr\u01b0\u1edbc t\u1ea3i \u00b130% ho\u1eb7c h\u01a1n. Trong m\u1ed9t m\u1eb7t b\u00edch nhi\u1ec1u bul\u00f4ng, \u0111\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u00e1ng k\u1ec3. M\u1ed9t s\u1ed1 bul\u00f4ng c\u00f3 th\u1ec3 b\u1ecb si\u1ebft qu\u00e1 m\u1ee9c nguy hi\u1ec3m v\u00e0 c\u00f3 nguy c\u01a1 bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n, trong khi nh\u1eefng bul\u00f4ng kh\u00e1c c\u00f3 th\u1ec3 b\u1ecb si\u1ebft ch\u01b0a \u0111\u1ee7, khi\u1ebfn ch\u00fang d\u1ec5 b\u1ecb g\u00e3y do c\u0103ng th\u1eb3ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i v\u00e0 t\u1ea1o ra c\u00e1c \u0111\u01b0\u1eddng r\u00f2 r\u1ec9 ti\u1ec1m n\u0103ng. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a c\u00e1c chi\u1ebfn l\u01b0\u1ee3c si\u1ebft ch\u1eb7t ti\u00ean ti\u1ebfn l\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 ph\u00e2n t\u00e1n l\u1ef1c tr\u01b0\u1edbc t\u1ea3i n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o l\u1ef1c gi\u1eef ch\u1eb7t \u0111\u1ed3ng \u0111\u1ec1u, d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c tr\u00ean to\u00e0n b\u1ed9 m\u1ed1i gh\u00e9p.<\/p>\n

    Chi\u1ebfn l\u01b0\u1ee3c k\u1eb9p ch\u00ednh x\u00e1c<\/h3>\n

    \u0110\u1ec3 v\u01b0\u1ee3t qua gi\u1edbi h\u1ea1n c\u1ee7a m\u1ed1i quan h\u1ec7 gi\u1eefa m\u00f4-men xo\u1eafn v\u00e0 l\u1ef1c c\u0103ng, \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ti\u00ean ti\u1ebfn. C\u00e1c chi\u1ebfn l\u01b0\u1ee3c n\u00e0y nh\u1eb1m ki\u1ec3m so\u00e1t ho\u1eb7c b\u1ecf qua bi\u1ebfn s\u1ed1 ma s\u00e1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed1i li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp h\u01a1n v\u1edbi s\u1ef1 k\u00e9o d\u00e0i c\u1ee7a bul\u00f4ng v\u00e0 l\u1ef1c tr\u01b0\u1edbc t\u1ea3i.<\/p>\n

      \n
    1. Ph\u01b0\u01a1ng ph\u00e1p m\u00f4-men xo\u1eafn- g\u00f3c:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 k\u1eb9p ch\u00ednh x\u00e1c. Qu\u00e1 tr\u00ecnh g\u1ed3m hai giai \u0111o\u1ea1n. \u0110\u1ea7u ti\u00ean, bul\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t \u0111\u1ebfn m\u1ed9t m\u00f4-men xo\u1eafn th\u1ea5p, quy \u0111\u1ecbnh \u201cch\u1eb7t v\u1eeba \u0111\u1ee7\u201d. M\u00f4-men xo\u1eafn ban \u0111\u1ea7u n\u00e0y \u0111\u1ee7 \u0111\u1ec3 c\u00e1c b\u1ec1 m\u1eb7t m\u1ed1i gh\u00e9p ti\u1ebfp x\u00fac \u0111\u1ea7y \u0111\u1ee7, lo\u1ea1i b\u1ecf c\u00e1c khe h\u1edf. T\u1eeb \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u nh\u1ea5t qu\u00e1n n\u00e0y, m\u1ed9t g\u00f3c quay ch\u00ednh x\u00e1c c\u1ee7a ph\u1ea7n b\u1ed5 sung \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho \u0111ai \u1ed1c ho\u1eb7c \u0111\u1ea7u v\u00edt. Nguy\u00ean t\u1eafc l\u00e0 khi m\u1ed1i gh\u00e9p \u0111\u00e3 ch\u1eb7t, m\u1ed1i quan h\u1ec7 gi\u1eefa g\u00f3c quay v\u00e0 s\u1ef1 k\u00e9o d\u00e0i c\u1ee7a bul\u00f4ng tr\u1edf n\u00ean tuy\u1ebfn t\u00ednh v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c cao, v\u00ec n\u00f3 ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o b\u01b0\u1edbc ren. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ph\u1ea7n l\u1edbn b\u1ecf qua t\u00e1c \u0111\u1ed9ng c\u1ee7a ma s\u00e1t trong giai \u0111o\u1ea1n c\u0103ng th\u1eb3ng quan tr\u1ecdng, gi\u1ea3m \u0111\u00e1ng k\u1ec3 ph\u00e2n t\u00e1n l\u1ef1c tr\u01b0\u1edbc t\u1ea3i xu\u1ed1ng c\u00f2n \u00b110%.<\/li>\n
    2. Si\u1ebft ch\u1eb7t \u0111i\u1ec3m gi\u1edbi h\u1ea1n ch\u1ea3y:<\/strong> C\u00f2n g\u1ecdi l\u00e0 m\u00f4-men xo\u1eafn-\u0111\u1ebfn \u0111i\u1ec3m gi\u1edbi h\u1ea1n ch\u1ea3y, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng l\u1ef1c gi\u1eef ch\u1eb7t t\u1ed1i \u0111a c\u00f3 th\u1ec3 t\u1eeb m\u1ed9t bul\u00f4ng cho s\u1eb5n. Qu\u00e1 tr\u00ecnh bao g\u1ed3m si\u1ebft ch\u1eb7t bul\u00f4ng b\u1eb1ng thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng theo d\u00f5i m\u1ed1i quan h\u1ec7 gi\u1eefa m\u00f4-men xo\u1eafn v\u00e0 g\u00f3c quay. Khi si\u1ebft ch\u1eb7t, bul\u00f4ng ban \u0111\u1ea7u k\u00e9o d\u00e0i \u0111\u00e0n h\u1ed3i. \u0110i\u1ec3m gi\u1edbi h\u1ea1n ch\u1ea3y \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n khi g\u00f3c quay b\u1eaft \u0111\u1ea7u t\u0103ng m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 gia t\u0103ng t\u1ef7 l\u1ec7 thu\u1eadn c\u1ee7a m\u00f4-men xo\u1eafn, cho th\u1ea5y v\u1eadt li\u1ec7u \u0111\u00e3 v\u00e0o v\u00f9ng d\u1ebbo. Bul\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec3m n\u00e0y. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p l\u1ef1c tr\u01b0\u1edbc t\u1ea3i cao nh\u1ea5t c\u00f3 th\u1ec3 v\u00e0 l\u00e0m cho m\u1ed1i gh\u00e9p c\u1ef1c k\u1ef3 ch\u1ed1ng l\u1ecfng l\u1ebbo. Tuy nhi\u00ean, \u0111i k\u00e8m c\u1ea3nh b\u00e1o quan tr\u1ecdng: bul\u00f4ng \u0111\u00e3 b\u1ecb k\u00e9o d\u00e0i v\u0129nh vi\u1ec5n v\u00e0 tr\u1ea3i qua bi\u1ebfn d\u1ea1ng d\u1ebbo. C\u00e1c bul\u00f4ng m\u00f4-men xo\u1eafn-\u0111\u1ebfn \u0111i\u1ec3m gi\u1edbi h\u1ea1n ch\u1ea3y \u0111\u01b0\u1ee3c coi l\u00e0 th\u00e0nh ph\u1ea7n d\u00f9ng m\u1ed9t l\u1ea7n v\u00e0 kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng.<\/li>\n
    3. \u0110o l\u1ef1c c\u0103ng tr\u1ef1c ti\u1ebfp:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng nh\u1ea5t, \u0111o l\u1ef1c c\u0103ng c\u1ee7a bul\u00f4ng tr\u1ef1c ti\u1ebfp cung c\u1ea5p m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u1ea5t, lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ef1 suy \u0111o\u00e1n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p bao g\u1ed3m:<\/li>\n<\/ol>\n
        \n
      • Ch\u1ec9 b\u00e1o Tension Tr\u1ef1c ti\u1ebfp (DTIs):<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c v\u00f2ng \u0111\u1ec7m chuy\u00ean d\u1ee5ng c\u00f3 c\u00e1c ch\u1ea5m nh\u1ecf n\u00e9n l\u1ea1i khi bu l\u00f4ng \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t. K\u1ef9 thu\u1eadt vi\u00ean si\u1ebft ch\u1eb7t bu l\u00f4ng cho \u0111\u1ebfn khi th\u01b0\u1edbc c\u1ea3m bi\u1ebfn kh\u00f4ng c\u00f2n ch\u00e8n v\u00e0o khe h\u1edf n\u1eefa, \u0111i\u1ec1u n\u00e0y cho th\u1ea5y l\u1ef1c n\u00e9n t\u1ed1i thi\u1ec3u y\u00eau c\u1ea7u \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/li>\n
      • \u0110o si\u00eau \u00e2m:<\/strong> \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n v\u00e0ng \u0111\u1ec3 x\u00e1c nh\u1eadn l\u1ef1c n\u00e9n tr\u01b0\u1edbc. Theo kinh nghi\u1ec7m th\u1ef1c t\u1ebf c\u1ee7a ch\u00fang t\u00f4i, vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn m\u1edf r\u1ed9ng si\u00eau \u00e2m l\u00e0 b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 cho c\u00e1c m\u1ed1i n\u1ed1i quan tr\u1ecdng. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m \u0111\u1eb7t m\u1ed9t c\u1ea3m bi\u1ebfn nh\u1ecf tr\u00ean \u0111\u1ea7u bu l\u00f4ng v\u00e0 l\u1ea5y ph\u00e9p \u0111o c\u01a1 s\u1edf v\u1ec1 chi\u1ec1u d\u00e0i c\u1ee7a n\u00f3 tr\u01b0\u1edbc khi si\u1ebft ch\u1eb7t. Khi k\u1ef9 thu\u1eadt vi\u00ean \u00e1p d\u1ee5ng m\u00f4-men xo\u1eafn, thi\u1ebft b\u1ecb g\u1eedi c\u00e1c xung si\u00eau \u00e2m qua bu l\u00f4ng v\u00e0 \u0111o th\u1eddi gian bay, t\u00ednh to\u00e1n s\u1ef1 thay \u0111\u1ed5i v\u1ec1 chi\u1ec1u d\u00e0i theo th\u1eddi gian th\u1ef1c. S\u1ef1 thay \u0111\u1ed5i n\u00e0y, hay k\u00e9o d\u00e0i, c\u00f3 m\u1ed1i quan h\u1ec7 tr\u1ef1c ti\u1ebfp, c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c v\u1edbi l\u1ef1c n\u00e9n. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ch\u00fang ta \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ef1c n\u00e9n m\u1ee5c ti\u00eau \u2014 v\u00ed d\u1ee5, 75% c\u1ee7a l\u1ef1c th\u1eed c\u1ee7a bu l\u00f4ng \u2014 v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u00b15% ho\u1eb7c t\u1ed1t h\u01a1n, m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c m\u00e0 kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u1edd l\u00ea m\u00f4-men xo\u1eafn \u0111\u01a1n gi\u1ea3n.<\/li>\n<\/ul>\n

        \u00c1p l\u1ef1c, bi\u1ebfn d\u1ea1ng v\u00e0 h\u1ecfng h\u00f3c<\/h2>\n

        K\u1ebft n\u1ed1i bu l\u00f4ng flange l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ed9ng d\u01b0\u1edbi \u00e1p l\u1ef1c li\u00ean t\u1ee5c. Hi\u1ec3u c\u00e1ch ph\u00e2n ph\u1ed1i c\u00e1c \u1ee9ng su\u1ea5t n\u00e0y v\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 khi\u1ebfn ch\u00fang v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 thi\u1ebft k\u1ebf \u0111\u1ed9 b\u1ec1n v\u00e0 ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ch\u1ee7 \u0111\u1ed9ng trong ph\u00e2n t\u00edch l\u1ed7i gi\u00fap k\u1ef9 s\u01b0 ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 tr\u01b0\u1edbc khi ch\u00fang x\u1ea3y ra.<\/p>\n

        S\u01a1 \u0111\u1ed3 Li\u00ean k\u1ebft (VDI 2230)<\/h3>\n

        \u0110\u1ec3 h\u00ecnh dung c\u00e1c l\u1ef1c t\u00e1c \u0111\u1ed9ng trong m\u1ed9t m\u1ed1i n\u1ed1i b\u1eaft bu l\u00f4ng, k\u1ef9 s\u01b0 th\u01b0\u1eddng tham kh\u1ea3o s\u01a1 \u0111\u1ed3 li\u00ean k\u1ebft, m\u1ed9t kh\u00e1i ni\u1ec7m \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y k\u1ef9 l\u01b0\u1ee1ng trong c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 VDI 2230. S\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 m\u1ed9t bi\u1ec3u \u0111\u1ed3 th\u1ec3 hi\u1ec7n l\u1ef1c so v\u1edbi bi\u1ebfn d\u1ea1ng c\u1ee7a c\u1ea3 bu l\u00f4ng v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n flange k\u1eb9p ch\u1eb7t. Bu l\u00f4ng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng d\u1ed1c t\u01b0\u01a1ng \u0111\u1ed1i n\u00f4ng (\u00edt c\u1ee9ng), trong khi c\u00e1c th\u00e0nh ph\u1ea7n k\u1eb9p ch\u1eb7t, th\u01b0\u1eddng ng\u1eafn h\u01a1n v\u00e0 n\u1eb7ng h\u01a1n, \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng d\u1ed1c d\u1ed1c h\u01a1n nhi\u1ec1u (c\u1ee9ng h\u01a1n).<\/p>\n

        Khi m\u1ed9t t\u1ea3i k\u00e9o b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng l\u00ean m\u1ed1i n\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00e9n tr\u01b0\u1edbc, s\u01a1 \u0111\u1ed3 th\u1ec3 hi\u1ec7n r\u00f5 c\u00e1ch t\u1ea3i n\u00e0y \u0111\u01b0\u1ee3c chia s\u1ebb nh\u01b0 th\u1ebf n\u00e0o. M\u1ed9t nguy\u00ean t\u1eafc quan tr\u1ecdng \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9 qua ph\u00e2n t\u00edch n\u00e0y l\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a \u0111\u1ed9 c\u1ee9ng c\u1ee7a m\u1ed1i n\u1ed1i. Trong m\u1ed9t m\u1ed1i n\u1ed1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t, n\u01a1i c\u00e1c th\u00e0nh ph\u1ea7n k\u1eb9p ch\u1eb7t c\u1ee9ng h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi bu l\u00f4ng, ph\u1ea7n l\u1edbn t\u1ea3i chu k\u1ef3 b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 b\u1edfi s\u1ef1 gi\u1ea3m \u00e1p c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n flange, ch\u1ee9 kh\u00f4ng ph\u1ea3i b\u1edfi s\u1ef1 t\u0103ng l\u1ef1c k\u00e9o c\u1ee7a bu l\u00f4ng. \u0110i\u1ec1u n\u00e0y b\u1ea3o v\u1ec7 bu l\u00f4ng kh\u1ecfi nh\u1eefng thay \u0111\u1ed5i \u1ee9ng su\u1ea5t l\u1edbn d\u1eabn \u0111\u1ebfn m\u1ecfi m\u00f2n. Ti\u00eau chu\u1ea9n VDI 2230 cung c\u1ea5p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n h\u1ec7 th\u1ed1ng \u0111\u1ec3 ph\u00e2n t\u00edch c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ed1i n\u1ed1i b\u1eaft bu l\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n.<\/p>\n

        C\u00e1c ph\u01b0\u01a1ng th\u1ee9c h\u1ecfng h\u00f3c ph\u1ed5 bi\u1ebfn<\/h3>\n

        Hi\u1ec3u l\u00fd do t\u1ea1i sao c\u00e1c k\u1ebft n\u1ed1i bu l\u00f4ng flange th\u1ea5t b\u1ea1i l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 ph\u00f2ng ng\u1eeba. C\u00e1c s\u1ef1 c\u1ed1 hi\u1ebfm khi x\u1ea3y ra m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean; ch\u00fang th\u01b0\u1eddng l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a sai s\u00f3t trong thi\u1ebft k\u1ebf, quy tr\u00ecnh l\u1eafp r\u00e1p kh\u00f4ng ch\u00ednh x\u00e1c ho\u1eb7c s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p gi\u1eefa v\u1eadt li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn nhanh gi\u00fap k\u1ef9 s\u01b0 v\u00e0 k\u1ef9 thu\u1eadt vi\u00ean nh\u1eadn di\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c d\u1ea1ng l\u1ed7i ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n

        B\u1ea3ng 2: C\u00e1c d\u1ea1ng l\u1ed7i ph\u1ed5 bi\u1ebfn trong c\u00e1c k\u1ebft n\u1ed1i bu l\u00f4ng flange<\/strong><\/p>\n\n\n\n\n\n\n\n\n
        Ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c<\/td>\nNguy\u00ean Nh\u00e2n Ch\u00ednh<\/td>\nCh\u1ec9 s\u1ed1 ch\u00ednh<\/td>\nChi\u1ebfn l\u01b0\u1ee3c Ng\u0103n ng\u1eeba<\/td>\n<\/tr>\n
        M\u1ec7t m\u1ecfi c\u1ee7a Bul\u00f4ng<\/strong><\/td>\nL\u1ef1c n\u00e9n kh\u00f4ng \u0111\u1ee7; t\u1ea3i ngo\u1ea1i l\u1ef1c chu k\u1ef3<\/td>\nG\u00e3y bu l\u00f4ng, th\u01b0\u1eddng \u1edf d\u01b0\u1edbi \u0111\u1ea7u ho\u1eb7c t\u1ea1i v\u00f2ng ren ti\u1ebfp x\u00fac \u0111\u1ea7u ti\u00ean. B\u1ec1 m\u1eb7t g\u00e3y th\u1ec3 hi\u1ec7n c\u00e1c v\u1ebft \u201cd\u1ea5u b\u00e3i bi\u1ec3n\u201d.<\/td>\n\u0110\u1ea3m b\u1ea3o l\u1ef1c n\u00e9n \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ng\u0103n ng\u1eeba t\u00e1ch r\u1eddi m\u1ed1i n\u1ed1i d\u01b0\u1edbi t\u1ea3i; s\u1eed d\u1ee5ng quy tr\u00ecnh si\u1ebft ch\u1eb7t \u0111\u00fang (v\u00ed d\u1ee5, m\u00f4-men xo\u1eafn- g\u00f3c); s\u1eed d\u1ee5ng bu l\u00f4ng flange c\u00f3 b\u00e1n k\u00ednh vi\u1ec1n l\u1edbn d\u01b0\u1edbi \u0111\u1ea7u.<\/td>\n<\/tr>\n
        L\u1ecfng l\u1ebbo do rung \u0111\u1ed9ng<\/strong><\/td>\nL\u1ef1c n\u00e9n th\u1ea5p; rung chuy\u1ec3n ngang ho\u1eb7c c\u1eaft<\/td>\nM\u1ea5t l\u1ef1c k\u1eb9p theo th\u1eddi gian; chuy\u1ec3n \u0111\u1ed9ng m\u1ed1i n\u1ed1i r\u00f5 r\u00e0ng; r\u00f2 r\u1ec9; ti\u1ebfng k\u00eau l\u1ee5c c\u1ee5c.<\/td>\nS\u1eed d\u1ee5ng bu l\u00f4ng flange r\u0103ng c\u01b0a \u0111\u1ec3 kh\u00f3a c\u01a1 h\u1ecdc; t\u0103ng l\u1ef1c n\u00e9n \u0111\u1ebfn m\u1ee9c an to\u00e0n t\u1ed1i \u0111a; s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh ren h\u00f3a h\u1ecdc; thi\u1ebft k\u1ebf m\u1ed1i n\u1ed1i \u0111\u1ec3 gi\u1ea3m thi\u1ec3u chuy\u1ec3n \u0111\u1ed9ng ngang.<\/td>\n<\/tr>\n
        N\u00e9n mi\u1ebfng \u0111\u1ec7m \/ R\u00f2 r\u1ec9<\/strong><\/td>\nL\u1ef1c n\u00e9n qu\u00e1 m\u1ee9c ho\u1eb7c kh\u00f4ng \u0111\u1ec1u; v\u1eadt li\u1ec7u mi\u1ebfng \u0111\u1ec7m kh\u00f4ng ph\u00f9 h\u1ee3p<\/td>\nMi\u1ebfng \u0111\u1ec7m b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c b\u1ecb \u00e9p tr\u1ed3i l\u00ean; r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng\/kh\u00ed t\u1eeb giao di\u1ec7n flange.<\/td>\nS\u1eed d\u1ee5ng bu l\u00f4ng flange m\u1ecbn \u0111\u1ec3 ph\u00e2n b\u1ed5 l\u1ef1c \u0111\u1ec1u; theo m\u1eabu h\u00ecnh sao ho\u1eb7c ch\u00e9o khi si\u1ebft ch\u1eb7t; ch\u1ecdn lo\u1ea1i v\u00e0 \u0111\u1ed9 d\u00e0y mi\u1ebfng \u0111\u1ec7m ph\u00f9 h\u1ee3p v\u1edbi \u00e1p l\u1ef1c, nhi\u1ec7t \u0111\u1ed9 v\u00e0 m\u00f4i tr\u01b0\u1eddng media.<\/td>\n<\/tr>\n
        L\u00e0m tr\u00f3c ren<\/strong><\/td>\nV\u1eb7n qu\u00e1 ch\u1eb7t; kh\u00f4ng \u0111\u1ee7 chi\u1ec1u d\u00e0i ren ti\u1ebfp x\u00fac; s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u kh\u00e1c nhau\/m\u1ec1m<\/td>\nKh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u00f4-men xo\u1eafn m\u1ee5c ti\u00eau (\u1ed1c v\u00edt c\u1ee9 quay); ren b\u1ecb tr\u01b0\u1ee3t tr\u00ean v\u00edt ho\u1eb7c trong \u0111ai \u1ed1c\/l\u1ed7.<\/td>\n\u0110\u1ea3m b\u1ea3o chi\u1ec1u d\u00e0i ti\u1ebfp x\u00fac ren t\u1ed1i thi\u1ec3u t\u1eeb 1 \u0111\u1ebfn 1,5 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh \u1ed1c v\u00edt trong th\u00e9p; s\u1eed d\u1ee5ng d\u1ea7u b\u00f4i tr\u01a1n ph\u00f9 h\u1ee3p \u0111\u1ec3 ng\u0103n ng\u1eeba k\u1eb9t r\u1ec9; kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n ch\u1ecbu l\u1ef1c c\u1ee7a v\u1eadt li\u1ec7u.<\/td>\n<\/tr>\n
        N\u1ee9t n\u1ebb do \u0103n m\u00f2n do \u1ee9ng su\u1ea5t<\/strong><\/td>\nV\u1eadt li\u1ec7u d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng + m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n + \u1ee9ng su\u1ea5t k\u00e9o<\/td>\nC\u00e1c v\u1ebft n\u1ee9t gi\u00f2n xu\u1ea5t hi\u1ec7n tr\u00ean \u1ed1c v\u00edt, th\u01b0\u1eddng sau m\u1ed9t th\u1eddi gian s\u1eed d\u1ee5ng, m\u00e0 kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u qu\u00e1 t\u1ea3i r\u00f5 r\u00e0ng.<\/td>\nL\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng (xem ph\u1ea7n ti\u1ebfp theo); \u00e1p d\u1ee5ng l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7; s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i \u1ed1c v\u00edt c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p h\u01a1n khi c\u00f3 th\u1ec3 \u0111\u1ec3 gi\u1ea3m kh\u1ea3 n\u0103ng b\u1ecb \u1ea3nh h\u01b0\u1edfng; ki\u1ec3m so\u00e1t m\u00f4i tr\u01b0\u1eddng n\u1ebfu c\u00f3 th\u1ec3.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u1ea2nh h\u01b0\u1edfng c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng<\/h2>\n

        T\u00ednh to\u00e0n v\u1eb9n v\u00e0 an to\u00e0n l\u00e2u d\u00e0i c\u1ee7a k\u1ebft n\u1ed1i \u0111ai \u1ed1c flange ph\u1ee5 thu\u1ed9c r\u1ea5t l\u1edbn v\u00e0o vi\u1ec7c ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh. M\u1ed9t b\u1ed9 b\u1eaft v\u00edt ho\u1ea1t \u0111\u1ed9ng ho\u00e0n h\u1ea3o trong ph\u00f2ng kh\u00f4, \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 ki\u1ec3m so\u00e1t c\u00f3 th\u1ec3 g\u1eb7p s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng khi ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao, h\u00f3a ch\u1ea5t \u0103n m\u00f2n ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n c\u1ef1c l\u1ea1nh. Ph\u00e2n t\u00edch k\u1ef9 l\u01b0\u1ee1ng c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng kh\u00f4ng ph\u1ea3i l\u00e0 t\u00f9y ch\u1ecdn; \u0111\u00f3 l\u00e0 ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a thi\u1ebft k\u1ebf m\u1ed1i n\u1ed1i c\u00f3 tr\u00e1ch nhi\u1ec7m.<\/p>\n

        \"C\u1eadn Ph\u00f9 h\u1ee3p gi\u1eefa c\u1ea5p \u0111\u1ed9 \u1ed1c v\u00edt v\u00e0 \u0111\u1ed9 b\u1ec1n<\/h3>\n

        C\u00e1c \u1ed1c v\u00edt flange c\u00f3 nhi\u1ec1u c\u1ea5p \u0111\u1ed9 \u0111\u1ed9 b\u1ec1n kh\u00e1c nhau, th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo ti\u00eau chu\u1ea9n nh\u01b0 ISO 898-1 (v\u00ed d\u1ee5, l\u1edbp t\u00ednh ch\u1ea5t 8.8, 10.9, 12.9) ho\u1eb7c SAE J429 (v\u00ed d\u1ee5, c\u1ea5p 5, 8). C\u00e1c c\u1ea5p \u0111\u1ed9 n\u00e0y th\u1ec3 hi\u1ec7n \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u, c\u1ee5 th\u1ec3 l\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111\u1ed9 b\u1ec1n d\u1ebbo. M\u1ed9t \u1ed1c v\u00edt c\u00f3 c\u1ea5p \u0111\u1ed9 cao h\u01a1n, nh\u01b0 l\u1edbp 12.9, c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n, cho ph\u00e9p si\u1ebft ch\u1eb7t v\u1edbi l\u1ef1c n\u00e9n l\u1edbn h\u01a1n, t\u1ea1o th\u00e0nh m\u1ed1i n\u1ed1i ch\u1eafc ch\u1eafn h\u01a1n v\u1edbi l\u1ef1c gi\u1eef ch\u1eb7t cao h\u01a1n.<\/p>\n

        Tuy nhi\u00ean, gi\u1ea3i ph\u00e1p kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 \u201cs\u1eed d\u1ee5ng \u1ed1c v\u00edt c\u00f3 \u0111\u1ed9 b\u1ec1n cao nh\u1ea5t.\u201d Th\u00e9p c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n (th\u01b0\u1eddng l\u00e0 l\u1edbp 10.9 tr\u1edf l\u00ean) c\u00f3 th\u1ec3 d\u1ec5 b\u1ecb n\u1ee9t do hydrogen, m\u1ed9t c\u01a1 ch\u1ebf h\u1ecfng h\u00f3c khi hydrogen h\u1ea5p th\u1ee5 g\u00e2y ra v\u1ee1 gi\u00f2n d\u01b0\u1edbi t\u1ea3i k\u00e9o, \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng ph\u1ee7 l\u1edbp ho\u1eb7c \u0103n m\u00f2n nh\u1ea5t \u0111\u1ecbnh. Nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt ch\u00ednh l\u00e0 ch\u1ecdn c\u1ea5p \u0111\u1ed9 \u1ed1c v\u00edt ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ee7a m\u1ed1i n\u1ed1i. Vi\u1ec7c qu\u00e1 m\u1ee9c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u00f3 th\u1ec3 g\u00e2y r\u1ee7i ro v\u00e0 chi ph\u00ed kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n

        \u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9<\/h3>\n

        Nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan \u1ea3nh h\u01b0\u1edfng s\u00e2u s\u1eafc \u0111\u1ebfn \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u b\u1eaft v\u00edt.<\/p>\n