{"id":2045,"date":"2021-05-19T05:25:35","date_gmt":"2021-05-19T05:25:35","guid":{"rendered":"https:\/\/saq0hpur0o.wpdns.site\/?p=2045"},"modified":"2021-07-15T04:00:49","modified_gmt":"2021-07-15T04:00:49","slug":"all-you-need-to-know-about-sheet-metal-flame-correction","status":"publish","type":"post","link":"https:\/\/hecter.cn\/vi\/all-you-need-to-know-about-sheet-metal-flame-correction\/","title":{"rendered":"T\u1ea5t c\u1ea3 nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n bi\u1ebft v\u1ec1 ch\u1ec9nh s\u1eeda ng\u1ecdn l\u1eeda kim lo\u1ea1i t\u1ea5m"},"content":{"rendered":"<p class=\"yoast-reading-time__wrapper\"><span class=\"yoast-reading-time__icon\"><\/span><span class=\"yoast-reading-time__descriptive-text\">Th\u1eddi gian \u0111\u1ecdc \u01b0\u1edbc t\u00ednh:  <\/span><span class=\"yoast-reading-time__reading-time\">12<\/span><span class=\"yoast-reading-time__time-unit\"> ph\u00fat<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong hi\u1ec7u ch\u1ec9nh nhi\u1ec7t c\u1ee7a <a href=\"https:\/\/www.hjsd-steelstructure.com\/news\/flame-correction-method-for-welding-deformation-of-steel-structure\" target=\"_blank\" rel=\"noopener\">t\u1ea5m kim lo\u1ea1i<\/a>, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t l\u00e0 hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda oxyacetylene. Hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb v\u1eadt li\u1ec7u m\u00e0 c\u00f2n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1eeda bi\u1ebfn d\u1ea1ng c\u1ee7a k\u1ebft c\u1ea5u trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. Do vi\u1ec7c hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda thu\u1eadn ti\u1ec7n, linh ho\u1ea1t, chi ph\u00ed th\u1ea5p n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a v\u1eadt li\u1ec7u kim lo\u1ea1i t\u1ea5m c\u00f3 ph\u00f4i nhi\u1ec7t l\u1ea1nh co l\u1ea1i, khi nung n\u00f3ng c\u1ee5c b\u1ed9, v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c nung n\u00f3ng s\u1ebd b\u1ecb nung n\u00f3ng v\u00e0 th\u1ed5i ph\u1ed3ng, nh\u01b0ng do nhi\u1ec7t \u0111\u1ed9 th\u1ea5p xung quanh v\u1eadt li\u1ec7u n\u00ean b\u1ecb c\u1ea3n tr\u1edf, qu\u00e1 tr\u00ecnh nung n\u00f3ng kim lo\u1ea1i do \u1ee9ng su\u1ea5t n\u00e9n, khi nhi\u1ec7t \u0111\u1ed9 nung n\u00f3ng l\u00e0 600 - 700 \u2103, \u1ee9ng su\u1ea5t n\u00e9n v\u01b0\u1ee3t qu\u00e1 c\u01b0\u1eddng \u0111\u1ed9 ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u \u1edf nhi\u1ec7t \u0111\u1ed9, t\u1ea1o ra bi\u1ebfn d\u1ea1ng n\u00e9n. Khi ng\u1eebng \u0111un n\u00f3ng, kim lo\u1ea1i ngu\u1ed9i \u0111i v\u00e0 ng\u1eafn l\u1ea1i. K\u1ebft qu\u1ea3 l\u00e0, c\u00e1c s\u1ee3i kim lo\u1ea1i t\u1ea1i \u0111i\u1ec3m \u0111\u1ed1t n\u00f3ng ng\u1eafn h\u01a1n so v\u1edbi ban \u0111\u1ea7u, t\u1ea1o ra m\u1ed9t bi\u1ebfn d\u1ea1ng m\u1edbi. Hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda l\u00e0 s\u1eeda ch\u1eefa bi\u1ebfn d\u1ea1ng ban \u0111\u1ea7u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng bi\u1ebfn d\u1ea1ng m\u1edbi g\u00e2y ra b\u1edfi s\u1ef1 nung n\u00f3ng c\u1ee5c b\u1ed9 c\u1ee7a kim lo\u1ea1i. Do \u0111\u00f3, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i n\u1eafm v\u1eefng hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c quy lu\u1eadt bi\u1ebfn d\u1ea1ng g\u00e2y ra b\u1edfi s\u1ef1 \u0111\u1ed1t n\u00f3ng c\u1ee5c b\u1ed9 c\u1ee7a ng\u1ecdn l\u1eeda.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00ecnh d\u01b0\u1edbi \u0111\u00e2y cho th\u1ea5y s\u1ef1 bi\u1ebfn d\u1ea1ng c\u1ee7a th\u00e9p t\u1ea5m, th\u00e9p g\u00f3c v\u00e0 th\u00e9p ch\u1eef T trong v\u00e0 sau khi nung n\u00f3ng. Do s\u1ee3i kim lo\u1ea1i trong v\u00f9ng nung n\u00f3ng n\u00ean sau khi ngu\u1ed9i s\u1ebd ng\u1eafn l\u1ea1i, th\u00e9p m\u1eb7t c\u1eaft b\u1ecb cong v\u00e0 bi\u1ebfn d\u1ea1ng v\u1ec1 ph\u00eda \u0111\u1ed1t n\u00f3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda, bi\u1ebfn d\u1ea1ng do nung n\u00f3ng ph\u1ea3i c\u00f3 h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i v\u1edbi bi\u1ebfn d\u1ea1ng ban \u0111\u1ea7u \u0111\u1ec3 b\u00f9 l\u1ea1i bi\u1ebfn d\u1ea1ng ban \u0111\u1ea7u v\u00e0 \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngu\u1ed3n nhi\u1ec7t c\u1ee7a vi\u1ec7c \u0111\u1ed1t n\u00f3ng hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda th\u01b0\u1eddng l\u00e0 ng\u1ecdn l\u1eeda oxy-axetylen \uff0c v\u00ec nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ng\u1ecdn l\u1eeda nhanh oxy-B cao v\u00e0 t\u1ed1c \u0111\u1ed9 \u0111\u1ed1t n\u00f3ng nhanh.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/1-1.jpg\" alt=\"Bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh nung n\u00f3ng th\u00e9p ph\u1ea7n\" class=\"wd-lazy-fade wp-image-2047\" width=\"469\" height=\"297\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/1-1.jpg 937w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/1-1-150x95.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/1-1-300x190.jpg 300w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/1-1-768x486.jpg 768w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/1-1-600x380.jpg 600w\" sizes=\"(max-width: 469px) 100vw, 469px\" \/><figcaption>Bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh nung n\u00f3ng th\u00e9p ph\u1ea7n<\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-operation-method-of-flame-correction\"><strong><a href=\"https:\/\/hecter.cn\/vi\/what-is-the-sheet-metal-mechanical-correction\/\">Ph\u01b0\u01a1ng ph\u00e1p ho\u1ea1t \u0111\u1ed9ng c\u1ee7a hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda<\/a><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda l\u00e0 m\u1ed9t ho\u1ea1t \u0111\u1ed9ng th\u1ee7 c\u00f4ng, ph\u1ea3i d\u1ef1a tr\u00ean s\u1ef1 bi\u1ebfn d\u1ea1ng c\u1ee7a ph\u00f4i, ki\u1ec3m so\u00e1t v\u1ecb tr\u00ed \u0111\u1ed1t n\u00f3ng ng\u1ecdn l\u1eeda, th\u1eddi gian, nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 hi\u1ec7u ch\u1ec9nh t\u1ed1t h\u01a1n. C\u00e1c v\u1ecb tr\u00ed gia nhi\u1ec7t kh\u00e1c nhau c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh bi\u1ebfn d\u1ea1ng theo c\u00e1c h\u01b0\u1edbng kh\u00e1c nhau, v\u00e0 v\u1ecb tr\u00ed gia nhi\u1ec7t n\u00ean \u0111\u01b0\u1ee3c ch\u1ecdn \u1edf ph\u1ea7n d\u00e0i h\u01a1n c\u1ee7a s\u1ee3i kim lo\u1ea1i, t\u1ee9c l\u00e0 b\u00ean ngo\u00e0i bi\u1ebfn d\u1ea1ng u\u1ed1n c\u1ee7a v\u1eadt li\u1ec7u. Ngo\u00e0i ra, h\u00ecnh d\u1ea1ng c\u1ee7a v\u00f9ng gia nhi\u1ec7t tr\u00ean ph\u00f4i \u0111\u01b0\u1ee3c nung n\u00f3ng c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn h\u01b0\u1edbng v\u00e0 l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng c\u1ee7a ph\u00f4i \u0111\u00e3 hi\u1ec7u ch\u1ec9nh, v\u00e0 h\u01b0\u1edbng c\u1ee7a s\u1ef1 ch\u00eanh l\u1ec7ch chi\u1ec1u d\u00e0i s\u1ee3i l\u1edbn nh\u1ea5t qua v\u00f9ng gia nhi\u1ec7t tr\u00ean ph\u00f4i \u0111\u00e3 hi\u1ec7u ch\u1ec9nh theo h\u01b0\u1edbng bi\u1ebfn d\u1ea1ng u\u1ed1n l\u1edbn nh\u1ea5t c\u1ee7a ph\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng t\u1ef7 l\u1ec7 v\u1edbi s\u1ef1 ch\u00eanh l\u1ec7ch chi\u1ec1u d\u00e0i tr\u00ean v\u00f9ng gia nhi\u1ec7t. V\u1edbi nhi\u1ec7t ng\u1ecdn l\u1eeda kh\u00e1c nhau, b\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c kh\u1ea3 n\u0103ng kh\u00e1c nhau \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh bi\u1ebfn d\u1ea1ng. N\u1ebfu kh\u00f4ng \u0111\u1ee7 nhi\u1ec7t c\u1ee7a ng\u1ecdn l\u1eeda s\u1ebd k\u00e9o d\u00e0i th\u1eddi gian \u0111\u1ed1t n\u00f3ng, m\u1edf r\u1ed9ng ph\u1ea1m vi \u0111\u1ed1t n\u00f3ng, gi\u1ea3m \u0111\u1ed9 ch\u00eanh l\u1ec7ch bi\u1ebfn d\u1ea1ng gi\u1eefa c\u00e1c s\u1ee3i song song n\u00ean kh\u00f4ng d\u1ec5 du\u1ed7i th\u1eb3ng, do \u0111\u00f3 t\u1ed1c \u0111\u1ed9 \u0111\u1ed1t n\u00f3ng c\u00e0ng nhanh th\u00ec c\u00e0ng t\u1eadp trung nhi\u1ec7t th\u00ec kh\u1ea3 n\u0103ng hi\u1ec7u ch\u1ec9nh c\u00e0ng m\u1ea1nh v\u00e0 l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng hi\u1ec7u ch\u1ec9nh c\u00e0ng l\u1edbn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111i\u1ec1u ch\u1ec9nh ng\u1ecdn l\u1eeda th\u00e9p cacbon th\u1ea5p v\u00e0 th\u00e9p h\u1ee3p kim th\u1ea5p th\u00f4ng th\u01b0\u1eddng, nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t 600-80 \u2103 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t chung kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 850 \u2103, \u0111\u1ec3 kh\u00f4ng l\u00e0m kim lo\u1ea1i qu\u00e1 n\u00f3ng khi gia nhi\u1ec7t, nh\u01b0ng nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t kh\u00f4ng th\u1ec3 qu\u00e1 th\u1ea5p, v\u00ec hi\u1ec7u qu\u1ea3 hi\u1ec7u ch\u1ec9nh kh\u00f4ng cao khi nhi\u1ec7t \u0111\u1ed9 qu\u00e1 th\u1ea5p. Nhi\u1ec7t \u0111\u1ed9 nung n\u00f3ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 s\u01a1 b\u1ed9 d\u1ef1a tr\u00ean m\u00e0u s\u1eafc c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c nung n\u00f3ng c\u1ee7a th\u00e9p trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a n\u00f3 li\u00ean quan \u0111\u1ebfn kinh nghi\u1ec7m, nh\u01b0 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong b\u1ea3ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">M\u00e0u s\u1eafc<\/td><td class=\"has-text-align-center\" data-align=\"center\">Nhi\u1ec7t \u0111\u1ed9 \/ \u2103<\/td><td class=\"has-text-align-center\" data-align=\"center\">M\u00e0u s\u1eafc<\/td><td class=\"has-text-align-center\" data-align=\"center\">Nhi\u1ec7t \u0111\u1ed9 \/ \u2103<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">H\u1ea1t d\u1ebb s\u1eabm<\/td><td class=\"has-text-align-center\" data-align=\"center\">550-580<\/td><td class=\"has-text-align-center\" data-align=\"center\">Hoa v\u00e2n anh t\u01b0\u01a1i s\u00e1ng<\/td><td class=\"has-text-align-center\" data-align=\"center\">830-900<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Bo\u0309 r\u01a1i<\/td><td class=\"has-text-align-center\" data-align=\"center\">580-650<\/td><td class=\"has-text-align-center\" data-align=\"center\">Qu\u1ea3 cam<\/td><td class=\"has-text-align-center\" data-align=\"center\">900-1050<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Hoa v\u00e2n anh t\u1ed1i<\/td><td class=\"has-text-align-center\" data-align=\"center\">650-730<\/td><td class=\"has-text-align-center\" data-align=\"center\">V\u00e0ng \u0111\u1eadm<\/td><td class=\"has-text-align-center\" data-align=\"center\">1050-1150<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Hoa v\u00e2n anh s\u00e2u<\/td><td class=\"has-text-align-center\" data-align=\"center\">730-770<\/td><td class=\"has-text-align-center\" data-align=\"center\">V\u00e0ng t\u01b0\u01a1i<\/td><td class=\"has-text-align-center\" data-align=\"center\">1150-1250<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Fuchsia<\/td><td class=\"has-text-align-center\" data-align=\"center\">770-800<\/td><td class=\"has-text-align-center\" data-align=\"center\">Tr\u1eafng v\u00e0ng<\/td><td class=\"has-text-align-center\" data-align=\"center\">1250-1300<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Hoa v\u00e2n anh nh\u1ea1t<\/td><td class=\"has-text-align-center\" data-align=\"center\">800-830<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><\/tbody><\/table><figcaption>M\u00e0u b\u1ec1 m\u1eb7t th\u00e9p v\u00e0 nhi\u1ec7t \u0111\u1ed9 b\u00f3ng (quan s\u00e1t \u0111\u01b0\u1ee3c trong b\u00ed m\u1eadt)<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p gia nhi\u1ec7t tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a ph\u00f4i b\u1ecb bi\u1ebfn d\u1ea1ng l\u00e0 gia nhi\u1ec7t \u0111i\u1ec3m, gia nhi\u1ec7t tuy\u1ebfn t\u00ednh v\u00e0 gia nhi\u1ec7t tam gi\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 th\u1ed1ng s\u01b0\u1edfi t\u1ea1i ch\u1ed7 l\u00e0 \u0111i\u1ec3m m\u00e0 khu v\u1ef1c s\u01b0\u1edfi \u1ea5m l\u00e0 m\u1ed9t khu v\u1ef1c h\u00ecnh tr\u00f2n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ea5t \u0111\u1ecbnh. Theo s\u1ef1 bi\u1ebfn d\u1ea1ng c\u1ee7a th\u00e9p \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a c\u00e1c \u0111i\u1ec3m n\u00f3ng v\u00e0 s\u1ed1 \u0111i\u1ec3m n\u00f3ng. H\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u0111a \u0111i\u1ec3m th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c lo\u1ea1i m\u1eadn (xem h\u00ecnh a). \u0110\u01b0\u1eddng k\u00ednh c\u1ee7a m\u1ed7i \u0111i\u1ec3m d ph\u1ea3i l\u1edbn h\u01a1n m\u1ed9t c\u00e1ch th\u00edch h\u1ee3p khi nung t\u1ea5m d\u00e0y v\u00e0 b\u1ea3n m\u1ecfng ph\u1ea3i nh\u1ecf h\u01a1n, n\u00f3i chung kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 15mm.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1-1024x418.jpg\" alt=\"Ph\u01b0\u01a1ng ph\u00e1p s\u01b0\u1edfi \u1ea5m\" class=\"wd-lazy-fade wp-image-2048\" width=\"512\" height=\"209\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1-1024x418.jpg 1024w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1-150x61.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1-300x122.jpg 300w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1-768x313.jpg 768w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1-600x245.jpg 600w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/2-1.jpg 1101w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><figcaption>Ph\u01b0\u01a1ng ph\u00e1p s\u01b0\u1edfi \u1ea5m<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 bi\u1ebfn d\u1ea1ng c\u00e0ng l\u1edbn th\u00ec kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111i\u1ec3m a c\u00e0ng nh\u1ecf, n\u00f3i chung ng\u1ecdn l\u1eeda \u0111\u1ed1t n\u00f3ng 50-100mm di chuy\u1ec3n d\u1ecdc theo ph\u01b0\u01a1ng th\u1eb3ng ho\u1eb7c \u0111\u1ed3ng th\u1eddi theo chi\u1ec1u r\u1ed9ng c\u1ee7a m\u1ed9t l\u1ef1c n\u00e2ng ngang nh\u1ea5t \u0111\u1ecbnh, g\u1ecdi l\u00e0 \u0111\u1ed1t n\u00f3ng tuy\u1ebfn t\u00ednh (xem h\u00ecnh b). N\u00f3 c\u00f3 s\u01b0\u1edfi \u1ea5m tr\u1ef1c ti\u1ebfp, s\u01b0\u1edfi \u1ea5m d\u00e2y chuy\u1ec1n v\u00e0 s\u01b0\u1edfi \u1ea5m d\u1ea3i 3 lo\u1ea1i. S\u1ef1 co ng\u00f3t theo chi\u1ec1u ngang c\u1ee7a d\u00e2y n\u00f3ng th\u01b0\u1eddng l\u1edbn h\u01a1n s\u1ef1 co ng\u00f3t theo chi\u1ec1u d\u1ecdc v\u00e0 l\u01b0\u1ee3ng co ng\u00f3t t\u0103ng l\u00ean khi chi\u1ec1u r\u1ed9ng c\u1ee7a d\u00e2y n\u00f3ng t\u0103ng l\u00ean. Chi\u1ec1u r\u1ed9ng c\u1ee7a d\u00e2y n\u00f3ng th\u01b0\u1eddng b\u1eb1ng 0,5-2 l\u1ea7n chi\u1ec1u d\u00e0y c\u1ee7a th\u00e9p. Gia nhi\u1ec7t tuy\u1ebfn t\u00ednh th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c k\u1ebft c\u1ea5u c\u00f3 \u0111\u1ed9 bi\u1ebfn d\u1ea1ng l\u1edbn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1eddng h\u1ee3p khu v\u1ef1c s\u01b0\u1edfi \u1ea5m c\u00f3 h\u00ecnh tam gi\u00e1c, n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u01b0\u1edfi \u1ea5m h\u00ecnh tam gi\u00e1c (xem h\u00ecnh c). V\u00ec di\u1ec7n t\u00edch \u0111\u1ed1t n\u00f3ng l\u1edbn n\u00ean l\u01b0\u1ee3ng co ng\u00f3t l\u1edbn, v\u00e0 do chi\u1ec1u r\u1ed9ng \u0111\u1ed1t n\u00f3ng d\u1ecdc theo chi\u1ec1u cao c\u1ee7a ph\u01b0\u01a1ng tam gi\u00e1c kh\u00f4ng b\u1eb1ng nhau n\u00ean l\u01b0\u1ee3ng co ng\u00f3t kh\u00f4ng b\u1eb1ng nhau n\u00ean bi\u1ebfn d\u1ea1ng u\u1ed1n c\u0169ng l\u1edbn, th\u01b0\u1eddng d\u00f9ng trong hi\u1ec7u ch\u1ec9nh bi\u1ebfn d\u1ea1ng u\u1ed1n c\u1ee7a c\u1ea5u ki\u1ec7n c\u00f3 \u0111\u1ed9 c\u1ee9ng l\u1edbn h\u01a1n v\u00e0 bi\u1ebfn d\u1ea1ng l\u1edbn h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda axetylen ph\u1ed5 bi\u1ebfn cho th\u00e9p.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Ch\u1ed7 tr\u1ed1ng<\/td><td class=\"has-text-align-center\" data-align=\"center\">Bi\u1ebfn d\u1ea1ng ban \u0111\u1ea7u<\/td><td class=\"has-text-align-center\" data-align=\"center\">Ph\u01b0\u01a1ng ph\u00e1p s\u01b0\u1edfi \u1ea5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">B\u1ee9c \u1ea3nh<\/td><td class=\"has-text-align-center\" data-align=\"center\">S\u1ef1 mi\u00eau t\u1ea3<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><br><br>Th\u00e9p t\u1ea5m m\u1ecfng (\u0111\u1ed9 d\u00e0y kh\u00f4ng l\u1edbn h\u01a1n 8mm)<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br><br><br>Ph\u00ecnh ra gi\u1eefa<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br><br><br>S\u01b0\u1edfi \u1ea5m t\u1ea1i ch\u1ed7<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br><br><img decoding=\"async\" width=\"377\" height=\"255\" class=\"wd-lazy-fade wp-image-2049\" style=\"width: 150px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/3-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/3-1.jpg 377w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/3-1-150x101.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/3-1-300x203.jpg 300w\" sizes=\"(max-width: 377px) 100vw, 377px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">V\u1edbi ph\u1ea7n l\u1ed3i h\u01b0\u1edbng l\u00ean tr\u00ean, d\u00f9ng \u0111inh kama. Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3m gia nhi\u1ec7t l\u00e0 50-100mm, v\u00e0 l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb nh\u1ecf. \u0110\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111i\u1ec3m gia nhi\u1ec7t l\u00e0 \u03a6\u226515mm, v\u00e0 \u0111\u1ed9 d\u00e0y t\u1ea5m l\u00e0 gi\u00e1 tr\u1ecb l\u1edbn h\u01a1n. \u0110i\u1ec3m: V\u00f9ng bi\u1ebfn d\u1ea1ng c\u00e0ng l\u1edbn th\u00ec \u0111i\u1ec3m \u0111\u00f3 c\u00e0ng l\u1edbn. Tr\u00ecnh t\u1ef1 l\u00e0m n\u00f3ng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong h\u00ecnh, \u0111\u01b0\u1ee3c b\u1ed5 sung b\u1eb1ng b\u00faa \u0111\u1eadp<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><br><br>Th\u00e9p t\u1ea5m m\u1ecfng (\u0111\u1ed9 d\u00e0y kh\u00f4ng l\u1edbn h\u01a1n 8mm)<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br><br><br>Ph\u00ecnh ra gi\u1eefa<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br><br><br>H\u1ec7 th\u1ed1ng s\u01b0\u1edfi tuy\u1ebfn t\u00ednh<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br><br><br><img decoding=\"async\" width=\"371\" height=\"243\" class=\"wd-lazy-fade wp-image-2050\" style=\"width: 150px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/4-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/4-1.jpg 371w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/4-1-150x98.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/4-1-300x196.jpg 300w\" sizes=\"(max-width: 371px) 100vw, 371px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">Ph\u1ea7n l\u1ed3i h\u01b0\u1edbng l\u00ean tr\u00ean v\u00e0 b\u1ecb k\u1eb9t tr\u00ean b\u1ec7. C\u00f3 ba lo\u1ea1i \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t: \u0111\u01b0\u1eddng th\u1eb3ng, \u0111\u01b0\u1eddng l\u01b0\u1ee3n s\u00f3ng v\u00e0 \u0111\u01b0\u1eddng xo\u1eafn \u1ed1c. Chi\u1ec1u r\u1ed9ng c\u1ee7a hai ph\u1ea7n sau l\u00e0 (0,5-2) t. S\u1ef1 co ng\u00f3t d\u1ecdc theo \u0111\u01b0\u1eddng gia nhi\u1ec7t nh\u1ecf h\u01a1n s\u1ef1 co ng\u00f3t theo chi\u1ec1u ngang. Khi l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng l\u1edbn, c\u00f3 th\u1ec3 t\u0103ng chi\u1ec1u r\u1ed9ng d\u00f2ng v\u00e0 gi\u1ea3m kho\u1ea3ng c\u00e1ch d\u00f2ng.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Th\u00e9p t\u1ea5m m\u1ecfng (\u0111\u1ed9 d\u00e0y kh\u00f4ng l\u1edbn h\u01a1n 8mm)<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br>G\u1ee3n s\u00f3ng \u1edf m\u1ed9t b\u00ean<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br>H\u1ec7 th\u1ed1ng s\u01b0\u1edfi tuy\u1ebfn t\u00ednh<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><img decoding=\"async\" width=\"385\" height=\"189\" class=\"wd-lazy-fade wp-image-2051\" style=\"width: 150px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/5-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/5-1.jpg 385w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/5-1-150x74.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/5-1-300x147.jpg 300w\" sizes=\"(max-width: 385px) 100vw, 385px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">V\u1edbi ph\u1ea7n l\u1ed3i h\u01b0\u1edbng l\u00ean tr\u00ean, k\u1eb9p ba m\u1eb7t kh\u00f4ng \u0111\u1ecbnh h\u00ecnh, tr\u01b0\u1edbc ti\u00ean gia nhi\u1ec7t c\u1ea3 hai m\u1eb7t c\u1ee7a ph\u1ea7n l\u1ed3i, sau \u0111\u00f3 bao quanh ph\u1ea7n l\u1ed3i \u0111\u1ec3 gia nhi\u1ec7t l\u1eb7p l\u1ea1i<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><br><br>Th\u00e9p t\u1ea5m d\u00e0y<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><br>U\u1ed1n cong v\u00f2m<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br>H\u1ec7 th\u1ed1ng s\u01b0\u1edfi tuy\u1ebfn t\u00ednh<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><img decoding=\"async\" width=\"364\" height=\"134\" class=\"wd-lazy-fade wp-image-2052\" style=\"width: 500px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/6-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/6-1.jpg 364w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/6-1-150x55.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/6-1-300x110.jpg 300w\" sizes=\"(max-width: 364px) 100vw, 364px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">\u0110\u1eb7t l\u00ean b\u1ec7 v\u00e0 gia nhi\u1ec7t t\u1eeb \u0111i\u1ec3m cao nh\u1ea5t \u0111\u1ebfn 600-800 \u2103, \u0111\u1ed9 s\u00e2u gia nhi\u1ec7t kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 1\/3 chi\u1ec1u d\u00e0y c\u1ee7a t\u1ea5m, c\u00f3 th\u1ec3 gia nhi\u1ec7t nhi\u1ec1u l\u1ea7n<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><br><br>\u1ed0ng th\u00e9p<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br>b\u1ebb cong<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br>S\u01b0\u1edfi \u1ea5m t\u1ea1i ch\u1ed7<\/td><td class=\"has-text-align-center\" data-align=\"center\"><br><br><img decoding=\"async\" width=\"364\" height=\"123\" class=\"wd-lazy-fade wp-image-2054\" style=\"width: 300px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/7-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/7-1.jpg 364w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/7-1-150x51.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/7-1-300x101.jpg 300w\" sizes=\"(max-width: 364px) 100vw, 364px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">L\u00e0m n\u00f3ng b\u1ec1 m\u1eb7t l\u1ed3i (m\u1ed9t h\u00e0ng ch\u1ea5m ho\u1eb7c nhi\u1ec1u h\u00e0ng ch\u1ea5m), t\u1ed1c \u0111\u1ed9 t\u1eeb \u0111i\u1ec3m n\u00e0y \u0111\u1ebfn \u0111i\u1ec3m kh\u00e1c ph\u1ea3i nhanh, l\u00e0m n\u00f3ng t\u1eebng h\u00e0ng<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Th\u00e9p h\u00ecnh ch\u1eef T<\/td><td class=\"has-text-align-center\" data-align=\"center\">U\u1ed1n cong b\u00ean<\/td><td class=\"has-text-align-center\" data-align=\"center\">S\u01b0\u1edfi \u1ea5m tam gi\u00e1c<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"329\" height=\"130\" class=\"wd-lazy-fade wp-image-2055\" style=\"width: 1000px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/8-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/8-1.jpg 329w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/8-1-150x59.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/8-1-300x119.jpg 300w\" sizes=\"(max-width: 329px) 100vw, 329px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">L\u00e0m n\u00f3ng ph\u1ea7n ph\u1ed3ng l\u00ean c\u1ee7a t\u1ea5m n\u1eb1m ngang<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Th\u00e9p h\u00ecnh ch\u1eef T<\/td><td class=\"has-text-align-center\" data-align=\"center\">U\u1ed1n cong b\u00ean<\/td><td class=\"has-text-align-center\" data-align=\"center\">S\u01b0\u1edfi \u1ea5m tam gi\u00e1c<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"363\" height=\"168\" class=\"wd-lazy-fade wp-image-2056\" style=\"width: 150px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/9-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/9-1.jpg 363w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/9-1-150x69.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/9-1-300x139.jpg 300w\" sizes=\"(max-width: 363px) 100vw, 363px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">L\u00e0m n\u00f3ng ph\u1ea7n ph\u1ed3ng l\u00ean c\u1ee7a t\u1ea5m d\u1ecdc<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Th\u00e9p g\u00f3c<\/td><td class=\"has-text-align-center\" data-align=\"center\">U\u1ed1n cong b\u00ean ngo\u00e0i<\/td><td class=\"has-text-align-center\" data-align=\"center\">S\u01b0\u1edfi \u1ea5m tam gi\u00e1c<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"299\" height=\"134\" class=\"wd-lazy-fade wp-image-2057\" style=\"width: 1500px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/10-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/10-1.jpg 299w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/10-1-150x67.jpg 150w\" sizes=\"(max-width: 299px) 100vw, 299px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">L\u00e0m n\u00f3ng khu v\u1ef1c \u0111\u01b0\u1ee3c n\u00e2ng l\u00ean<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">I-beam<\/td><td class=\"has-text-align-center\" data-align=\"center\">U\u1ed1n cong b\u00ean<\/td><td class=\"has-text-align-center\" data-align=\"center\">S\u01b0\u1edfi \u1ea5m tam gi\u00e1c<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"348\" height=\"139\" class=\"wd-lazy-fade wp-image-2058\" style=\"width: 1500px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/11-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/11-1.jpg 348w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/11-1-150x60.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/11-1-300x120.jpg 300w\" sizes=\"(max-width: 348px) 100vw, 348px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">L\u00e0m n\u00f3ng khu v\u1ef1c \u0111\u01b0\u1ee3c n\u00e2ng l\u00ean<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Th\u00e9p k\u00eanh<\/td><td class=\"has-text-align-center\" data-align=\"center\">U\u1ed1n cong m\u1ed9t ph\u1ea7n b\u00ean<\/td><td class=\"has-text-align-center\" data-align=\"center\">H\u1ec7 th\u1ed1ng s\u01b0\u1edfi tuy\u1ebfn t\u00ednh<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"348\" height=\"150\" class=\"wd-lazy-fade wp-image-2059\" style=\"width: 1500px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/12-2.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/12-2.jpg 348w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/12-2-150x65.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/12-2-300x129.jpg 300w\" sizes=\"(max-width: 348px) 100vw, 348px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\">Hai m\u1ecf h\u00e0n \u0111\u01b0\u1ee3c \u0111\u1ed1t n\u00f3ng theo h\u00ecnh s\u00f3ng c\u00f9ng m\u1ed9t l\u00fac<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Tr\u1ee5 th\u00e9p<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u0110\u1ed9 cong c\u1ee5c b\u1ed9 qu\u00e1 l\u1edbn<\/td><td class=\"has-text-align-center\" data-align=\"center\">H\u1ec7 th\u1ed1ng s\u01b0\u1edfi tuy\u1ebfn t\u00ednh<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"339\" height=\"106\" class=\"wd-lazy-fade wp-image-2060\" style=\"width: 1500px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/13-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/13-1.jpg 339w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/13-1-150x47.jpg 150w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/13-1-300x94.jpg 300w\" sizes=\"(max-width: 339px) 100vw, 339px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><br>S\u01b0\u1edfi \u1ea5m d\u1ecdc theo thanh c\u00e1i<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Tr\u1ee5 th\u00e9p<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u0110\u1ed9 cong c\u1ee5c b\u1ed9 qu\u00e1 nh\u1ecf<\/td><td class=\"has-text-align-center\" data-align=\"center\">H\u1ec7 th\u1ed1ng s\u01b0\u1edfi tuy\u1ebfn t\u00ednh<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" width=\"301\" height=\"90\" class=\"wd-lazy-fade wp-image-2061\" style=\"width: 2000px\" src=\"https:\/\/hecter.cn\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"http:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/14-1.jpg\" alt=\"\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/14-1.jpg 301w, https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/14-1-150x45.jpg 150w\" sizes=\"(max-width: 301px) 100vw, 301px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><br>S\u01b0\u1edfi \u1ea5m d\u1ecdc theo thanh c\u00e1i<\/td><\/tr><\/tbody><\/table><figcaption>Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda axetylen b\u1eb1ng th\u00e9p th\u00f4ng th\u01b0\u1eddng<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-precautions-for-flame-correction-operation\"><strong>C\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba \u0111\u1ed1i v\u1edbi ho\u1ea1t \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh ng\u1ecdn l\u1eeda<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>T\u1ed1c \u0111\u1ed9 gia nhi\u1ec7t ph\u1ea3i nhanh, t\u1ecfa nhi\u1ec7t t\u1eadp trung v\u00e0 thu h\u1eb9p ph\u1ea1m vi gia nhi\u1ec7t b\u00ean ngo\u00e0i v\u00f9ng gia nhi\u1ec7t trong kh\u1ea3 n\u0103ng c\u1ee7a ch\u00fang t\u00f4i. M\u1eabu T c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 hi\u1ec7u ch\u1ec9nh v\u00e0 thu \u0111\u01b0\u1ee3c s\u1ef1 co c\u1ee5c b\u1ed9 l\u1edbn h\u01a1n. Khi hi\u1ec7u ch\u1ec9nh v\u00f9ng bi\u1ebfn d\u1ea1ng l\u1edbn, d\u00f9 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gia nhi\u1ec7t nhi\u1ec1u \u0111i\u1ec3m hay nhi\u1ec1u d\u00f2ng, v\u00f9ng gia nhi\u1ec7t kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ed3ng l\u00ean nhau, n\u1ebfu kh\u00f4ng s\u1ebd l\u00e0m h\u1ecfng v\u1eadt li\u1ec7u ph\u00f4i. Tr\u01b0\u1edbc khi hi\u1ec7u ch\u1ec9nh, c\u00e1c \u0111i\u1ec3m, \u0111\u01b0\u1eddng v\u00e0 h\u01b0\u1edbng ch\u1ea1y c\u1ee7a gia nhi\u1ec7t m\u1ebb ph\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n \u0111\u1ecbnh theo k\u00edch th\u01b0\u1edbc c\u1ee7a v\u00f9ng bi\u1ebfn d\u1ea1ng v\u00e0 m\u1ee9c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng. T\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m v\u00e0 \u0111\u01b0\u1eddng trong c\u00f9ng m\u1ed9t l\u00f4 ph\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 c\u00e1ch \u0111\u1ec1u nhau, \u0111\u1ed1i x\u1ee9ng v\u00e0 nh\u1ea3y v\u1ecdt trong to\u00e0n b\u1ed9 khu v\u1ef1c. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh gia nhi\u1ec7t n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo t\u1eebng \u0111\u1ee3t. Khi m\u1ed9t m\u1ebb \u0111\u1ea1t y\u00eau c\u1ea7u hi\u1ec7u ch\u1ec9nh th\u00ec kh\u00f4ng c\u1ea7n th\u1ef1c hi\u1ec7n gia nhi\u1ec7t m\u1ebb ti\u1ebfp theo. Qu\u00e1 tr\u00ecnh s\u1eeda ch\u1eefa m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 s\u1eafp x\u1ebfp chung s\u1ebd b\u1ecb c\u1ea5m. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 hi\u1ec7u ch\u1ec9nh m\u00e0 c\u00f2n tr\u00e1nh \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng ch\u1ed3ng nhi\u1ec7t v\u00f9ng. Tr\u00ecnh t\u1ef1 c\u00e1c \u0111i\u1ec3m n\u00f3ng v\u00e0 v\u1ecb tr\u00ed tuy\u1ebfn c\u1ee7a m\u1ed7i m\u1ebb c\u00e1t ph\u1ea3i b\u1eaft \u0111\u1ea7u t\u1eeb m\u00e9p c\u1ee7a v\u00f9ng b\u1ecb bi\u1ebfn d\u1ea1ng. C\u1ea5m s\u01b0\u1edfi \u1ea5m t\u1eadp trung qu\u00e1 m\u1ee9c \u1edf gi\u1eefa khu v\u1ef1c b\u1ecb bi\u1ebfn d\u1ea1ng. N\u1ebfu kh\u00f4ng s\u1ebd g\u00e2y ra bi\u1ebfn d\u1ea1ng qu\u00e1 m\u1ee9c trong khu v\u1ef1c b\u1ecb bi\u1ebfn d\u1ea1ng v\u00e0 vi\u1ec7c s\u1eeda ch\u1eefa sau \u0111\u00f3 s\u1ebd kh\u00f3 kh\u0103n do ch\u1ea5t l\u01b0\u1ee3ng l\u00e0ng c\u1ee7a khu v\u1ef1c \u0111\u00f3.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Trong c\u00f4ng vi\u1ec7c hi\u1ec7u ch\u1ec9nh th\u1ef1c t\u1ebf, th\u01b0\u1eddng sau khi l\u00e0m n\u00f3ng n\u01b0\u1edbc \u0111\u1ec3 l\u00e0m d\u1ecbu khu v\u1ef1c l\u00e0m n\u00f3ng, \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 co kim lo\u1ea1i, n\u00e2ng cao hi\u1ec7u qu\u1ea3 hi\u1ec7u ch\u1ec9nh. So v\u1edbi vi\u1ec7c hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 t\u0103ng l\u00ean g\u1ea5p nhi\u1ec1u l\u1ea7n, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh n\u01b0\u1edbc v\u00e0 l\u1eeda. Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh n\u01b0\u1edbc v\u00e0 l\u1eeda c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf nh\u1ea5t \u0111\u1ecbnh, khi \u0111\u1ed9 d\u00e0y ch\u00ednh x\u00e1c l\u00e0 2mm c\u1ee7a t\u1ea5m th\u00e9p cacbon th\u1ea5p, nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t n\u00f3i chung kh\u00f4ng qu\u00e1 600 \u2103, l\u00fac n\u00e0y kho\u1ea3ng c\u00e1ch gi\u1eefa n\u01b0\u1edbc v\u00e0 l\u1eeda n\u00ean g\u1ea7n h\u01a1n. Khi \u0111\u1ed9 d\u00e0y ch\u00ednh x\u00e1c l\u00e0 t\u1ea5m th\u00e9p 4 ~ 6mm, nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t ph\u1ea3i l\u00e0 600-800 \u2103, kho\u1ea3ng c\u00e1ch gi\u1eefa n\u01b0\u1edbc v\u00e0 l\u1eeda l\u00e0 25-30mm. \u0110i\u1ec1u ch\u1ec9nh c\u00e1c t\u1ea5m th\u00e9p c\u00f3 \u0111\u1ed9 d\u00e0y l\u1edbn h\u01a1n 8mm, th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c xem x\u00e9t l\u00e0m m\u00e1t b\u1eb1ng n\u01b0\u1edbc v\u00ec l\u00e0m m\u00e1t b\u1eb1ng n\u01b0\u1edbc s\u1ebd g\u00e2y ra \u1ee9ng su\u1ea5t l\u1edbn h\u01a1n. Khi s\u1eeda ch\u1eefa c\u00e1c t\u1ea5m th\u00e9p c\u00f3 xu h\u01b0\u1edbng c\u1ee9ng l\u1ea1i (ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00e9p t\u1ea5m h\u1ee3p kim th\u1ea5p th\u00f4ng th\u01b0\u1eddng), kho\u1ea3ng c\u00e1ch gi\u1eefa n\u01b0\u1edbc v\u00e0 l\u1eeda ph\u1ea3i l\u1edbn h\u01a1n. \u0110\u1ed1i v\u1edbi v\u1eadt li\u1ec7u c\u00f3 xu h\u01b0\u1edbng c\u1ee9ng l\u1edbn (ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00e9p cacbon trung b\u00ecnh v\u00e0 cao ho\u1eb7c th\u00e9p h\u1ee3p kim), kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ec9nh n\u01b0\u1edbc v\u00e0 l\u1eeda, v\u00e0 ch\u1ec9 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n l\u00e0m m\u00e1t b\u1eb1ng kh\u00f4ng kh\u00ed \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng c\u1ee7a n\u00f3. Khi \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 u\u1ed1n c\u1ee7a t\u1ea5m th\u00e9p, \u0111\u1ed9 s\u00e2u gia nhi\u1ec7t n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong 1\/4 ~ 1\/3 chi\u1ec1u d\u00e0y c\u1ee7a t\u1ea5m. Kh\u00f4ng n\u00ean kho\u00e9t s\u00e2u qu\u00e1, n\u1ebfu kh\u00f4ng s\u1ebd \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u qu\u1ea3 ch\u1ec9nh l\u1eeda.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>M\u1eb7c d\u00f9 hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh \u0111\u00e1ng k\u1ec3 h\u01a1n, n\u00f3 v\u1eabn k\u00e9m kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng hi\u1ec7u ch\u1ec9nh, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi ph\u00f4i \u0111\u1eb7c bi\u1ec7t nh\u1ea1y c\u1ea3m v\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda, ch\u1eb3ng h\u1ea1n nh\u01b0 n\u1eafn th\u1eb3ng c\u00e1c b\u1ed9 ph\u1eadn m\u1ea3nh v\u00e0 n\u1eafn. c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn b\u1ea3n m\u1ecfng. Do \u0111\u00f3, \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh bi\u1ebfn d\u1ea1ng l\u1edbn c\u1ee7a lo\u1ea1i ph\u00f4i n\u00e0y, hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh th\u00f4 v\u00e0 ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi hi\u1ec7u ch\u1ec9nh c\u01a1 h\u1ecdc ti\u1ebfp theo; Hi\u1ec7u ch\u1ec9nh ng\u1ecdn l\u1eeda kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh ph\u00f4i c\u00f3 bi\u1ebfn d\u1ea1ng nh\u1ecf v\u00e0 y\u00eau c\u1ea7u cao h\u01a1n, n\u1ebfu kh\u00f4ng, n\u00f3 s\u1ebd d\u1eabn \u0111\u1ebfn bi\u1ebfn d\u1ea1ng m\u1edbi ho\u1eb7c th\u1eadm ch\u00ed l\u1edbn h\u01a1n.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>\u0110\u1ec3 \u0111\u1ea9y nhanh s\u1ef1 co l\u1ea1i c\u1ee7a v\u00f9ng \u0111\u1ed1t n\u00f3ng, ng\u01b0\u1eddi ta th\u01b0\u1eddng b\u1ed5 sung th\u00eam b\u00faa, nh\u01b0ng ph\u1ea3i d\u00f9ng b\u00faa g\u1ed7 ho\u1eb7c b\u00faa \u0111\u1ed3ng ch\u1ee9 kh\u00f4ng d\u00f9ng b\u00faa b\u1ed5.<\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>In the thermal correction of sheet metal, the most widely used is the oxyacetylene flame correction. Flame correction is not<\/p>","protected":false},"author":3,"featured_media":2063,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[856,822,824],"class_list":["post-2045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shearing-machine","tag-metalworking","tag-sheet-metal","tag-sheet-metal-processing"],"jetpack_featured_media_url":"https:\/\/hecter.cn\/wp-content\/uploads\/2021\/05\/Heating-part.jpg","_links":{"self":[{"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/posts\/2045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/comments?post=2045"}],"version-history":[{"count":0,"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/posts\/2045\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/media\/2063"}],"wp:attachment":[{"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/media?parent=2045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/categories?post=2045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hecter.cn\/vi\/wp-json\/wp\/v2\/tags?post=2045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}