{"id":2312,"date":"2026-07-23T12:34:38","date_gmt":"2026-07-23T05:34:38","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/"},"modified":"2026-07-23T12:34:38","modified_gmt":"2026-07-23T05:34:38","slug":"lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/","title":{"rendered":"L\u1eafp d\u1ef1ng k\u1ebft c\u1ea5u Inox l\u1edbn: An to\u00e0n thi c\u00f4ng v\u00e0 ch\u1ed1ng bi\u1ebfn d\u1ea1ng"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;2312&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 b\u00ecnh ch\u1ecdn)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;L\u1eafp d\u1ef1ng k\u1ebft c\u1ea5u Inox l\u1edbn: An to\u00e0n thi c\u00f4ng v\u00e0 ch\u1ed1ng bi\u1ebfn d\u1ea1ng&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">\u0110\u00e1nh gi\u00e1<\/span>\n    <\/div>\n    <\/div>\n<div class=\"custom-toc\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#Noi_dung_chinh\" >N\u1ed9i dung ch\u00ednh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#1_Dac_thu_cua_ket_cau_Inox_lon_va_thach_thuc_thuong_gap\" >1) \u0110\u1eb7c th\u00f9 c\u1ee7a k\u1ebft c\u1ea5u Inox l\u1edbn v\u00e0 th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#2_Ke_hoach_an_toan_va_to_chuc_thi_cong_Khong_thoa_hiep\" >2) K\u1ebf ho\u1ea1ch an to\u00e0n v\u00e0 t\u1ed5 ch\u1ee9c thi c\u00f4ng: Kh\u00f4ng th\u1ecfa hi\u1ec7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#21_Tai_lieu_va_phan_quyen\" >2.1. T\u00e0i li\u1ec7u v\u00e0 ph\u00e2n quy\u1ec1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#22_An_toan_lam_viec_tren_cao_va_nang_ha\" >2.2. An to\u00e0n l\u00e0m vi\u1ec7c tr\u00ean cao v\u00e0 n\u00e2ng h\u1ea1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#23_An_toan_han_cat_Inox\" >2.3. An to\u00e0n h\u00e0n c\u1eaft Inox<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#3_Chien_luoc_chong_bien_dang_tu_thiet_ke_toi_lap_dung\" >3) Chi\u1ebfn l\u01b0\u1ee3c ch\u1ed1ng bi\u1ebfn d\u1ea1ng: t\u1eeb thi\u1ebft k\u1ebf t\u1edbi l\u1eafp d\u1ef1ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#31_Giai_doan_thiet_ke_chuan_bi\" >3.1. Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf &#038; chu\u1ea9n b\u1ecb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#32_Kiem_soat_trong_qua_trinh_han\" >3.2. Ki\u1ec3m so\u00e1t trong qu\u00e1 tr\u00ecnh h\u00e0n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#33_Sau_han_lam_sach_thu_dong_hoa_va_nan_chinh\" >3.3. Sau h\u00e0n: l\u00e0m s\u1ea1ch, th\u1ee5 \u0111\u1ed9ng h\u00f3a v\u00e0 n\u1eafn ch\u1ec9nh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#4_Lap_dung_tai_hien_truong_can_chinh_lien_ket_va_chong_se_lanh\" >4) L\u1eafp d\u1ef1ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng: c\u0103n ch\u1ec9nh, li\u00ean k\u1ebft v\u00e0 ch\u1ed1ng se l\u1ea1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#5_Quan_ly_vat_tu_va_moi_truong_thi_cong\" >5) Qu\u1ea3n l\u00fd v\u1eadt t\u01b0 v\u00e0 m\u00f4i tr\u01b0\u1eddng thi c\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#6_Kiem_soat_chat_luong_QC_va_nghiem_thu\" >6) Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (QC) v\u00e0 nghi\u1ec7m thu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#7_Quy_trinh_mau_lap_dung_khung_san_thao_tac_Inox_304L_day_6%E2%80%9310_mm\" >7) Quy tr\u00ecnh m\u1eabu: l\u1eafp d\u1ef1ng khung s\u00e0n thao t\u00e1c Inox 304L d\u00e0y 6\u201310 mm<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#8_10_loi_pho_bien_va_cach_tranh\" >8) 10 l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#Tai_lieu_tham_khao\" >T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/inoxcuongthinh.com\/lap-dung-ket-cau-inox-lon-an-toan-thi-cong-va-chong-bien-dang\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Noi_dung_chinh\"><\/span>N\u1ed9i dung ch\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><a href=\"#toc-0-1-dac-thu-cua-ket-cau-inox-lon-va-thach-thuc-thuon\">1) \u0110\u1eb7c th\u00f9 c\u1ee7a k\u1ebft c\u1ea5u Inox l\u1edbn v\u00e0 th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-1-2-ke-hoach-an-toan-va-to-chuc-thi-cong-khong-thoa-\">2) K\u1ebf ho\u1ea1ch an to\u00e0n v\u00e0 t\u1ed5 ch\u1ee9c thi c\u00f4ng: Kh\u00f4ng th\u1ecfa hi\u1ec7p<\/a><\/li>\n<li><a href=\"#toc-2-3-chien-luoc-chong-bien-dang-tu-thiet-ke-toi-lap-d\">3) Chi\u1ebfn l\u01b0\u1ee3c ch\u1ed1ng bi\u1ebfn d\u1ea1ng: t\u1eeb thi\u1ebft k\u1ebf t\u1edbi l\u1eafp d\u1ef1ng<\/a><\/li>\n<li><a href=\"#toc-3-4-lap-dung-tai-hien-truong-can-chinh-lien-ket-va-c\">4) L\u1eafp d\u1ef1ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng: c\u0103n ch\u1ec9nh, li\u00ean k\u1ebft v\u00e0 ch\u1ed1ng se l\u1ea1nh<\/a><\/li>\n<li><a href=\"#toc-4-5-quan-ly-vat-tu-va-moi-truong-thi-cong\">5) Qu\u1ea3n l\u00fd v\u1eadt t\u01b0 v\u00e0 m\u00f4i tr\u01b0\u1eddng thi c\u00f4ng<\/a><\/li>\n<li><a href=\"#toc-5-6-kiem-soat-chat-luong-qc-va-nghiem-thu\">6) Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (QC) v\u00e0 nghi\u1ec7m thu<\/a><\/li>\n<li><a href=\"#toc-6-7-quy-trinh-mau-lap-dung-khung-san-thao-tac-inox-3\">7) Quy tr\u00ecnh m\u1eabu: l\u1eafp d\u1ef1ng khung s\u00e0n thao t\u00e1c Inox 304L d\u00e0y 6\u201310 mm<\/a><\/li>\n<li><a href=\"#toc-7-8-10-loi-pho-bien-va-cach-tranh\">8) 10 l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-8-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-9-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>K\u1ef9 thu\u1eadt l\u1eafp d\u1ef1ng k\u1ebft c\u1ea5u Inox l\u1edbn \u0111\u00f2i h\u1ecfi ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd an to\u00e0n thi c\u00f4ng v\u00e0 bi\u1ebfn d\u1ea1ng do h\u00e0n\/nhi\u1ec7t, n\u1ebfu kh\u00f4ng s\u1ebd g\u00e2y sai s\u1ed1 l\u1eafp \u0111\u1eb7t, n\u1ee9t m\u1ed1i h\u00e0n v\u00e0 suy gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c. B\u00e0i vi\u1ebft n\u00e0y l\u00e0 h\u01b0\u1edbng d\u1eabn chuy\u00ean s\u00e2u, \u0111\u1ed9c l\u1eadp, gi\u00fap k\u1ef9 s\u01b0, nh\u00e0 th\u1ea7u v\u00e0 x\u01b0\u1edfng c\u01a1 kh\u00ed tri\u1ec3n khai l\u1eafp d\u1ef1ng k\u1ebft c\u1ea5u Inox l\u1edbn \u0111\u00fang k\u1ef9 thu\u1eadt, ph\u00f9 h\u1ee3p th\u1ef1c h\u00e0nh qu\u1ed1c t\u1ebf (AWS D1.6, EN 1993-1-4) v\u00e0 quy \u0111\u1ecbnh an to\u00e0n Vi\u1ec7t Nam (QCVN 18:2021\/BXD). Ch\u1ee7 \u0111\u1ec1 n\u00e0y c\u0169ng l\u00e0 tr\u1ee5 c\u1ed9t trong c\u1ea9m nang v\u1ec1 li\u00ean k\u1ebft Inox qua h\u00e0n v\u00e0 l\u1eafp d\u1ef1ng.<\/p>\n<h2 id=\"toc-0-1-dac-thu-cua-ket-cau-inox-lon-va-thach-thuc-thuon\"><span class=\"ez-toc-section\" id=\"1_Dac_thu_cua_ket_cau_Inox_lon_va_thach_thuc_thuong_gap\"><\/span>1) \u0110\u1eb7c th\u00f9 c\u1ee7a k\u1ebft c\u1ea5u Inox l\u1edbn v\u00e0 th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; T\u00ednh d\u1eabn nhi\u1ec7t th\u1ea5p v\u00e0 gi\u00e3n n\u1edf nhi\u1ec7t cao: Austenitic (304\/316) c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf ~16\u201317 \u00b5m\/m\u00b7K, cao h\u01a1n th\u00e9p carbon (~12 \u00b5m\/m\u00b7K), d\u1eabn \u0111\u1ebfn bi\u1ebfn d\u1ea1ng h\u00e0n l\u1edbn h\u01a1n; d\u1eabn nhi\u1ec7t ~1\/3 th\u00e9p carbon l\u00e0m nhi\u1ec7t t\u1eadp trung c\u1ee5c b\u1ed9.<br \/>\n&#8211; H\u00f3a b\u1ec1n ngu\u1ed9i v\u00e0 kh\u00f4ng c\u00f3 \u201cyield plateau\u201d: D\u1ec5 t\u00edch t\u1ee5 \u1ee9ng su\u1ea5t d\u01b0, cong v\u00eanh sau h\u00e0n\/c\u1eaft.<br \/>\n&#8211; Nh\u1ea1y c\u1ea3m b\u1ec1 m\u1eb7t: Tr\u1ea7y x\u01b0\u1edbc, nhi\u1ec5m s\u1eaft ngo\u1ea1i lai d\u1ec5 g\u00e2y g\u1ec9 b\u1ec1 m\u1eb7t, m\u1ea5t th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; R\u1ee7i ro an to\u00e0n \u0111\u1eb7c th\u00f9: Kh\u00f3i h\u00e0n c\u00f3 Cr(VI), b\u1ec1 m\u1eb7t tr\u01a1n, ph\u1ea3n x\u1ea1 h\u1ed3 quang m\u1ea1nh.<\/p>\n<p>H\u1ec7 qu\u1ea3 ch\u00ednh: bi\u1ebfn d\u1ea1ng (v\u00f5ng, \u201cb\u1eb9t\u201d, cong xo\u1eafn), sai l\u1ec7ch l\u1eafp \u0111\u1eb7t, se l\u1ea1nh bu l\u00f4ng Inox khi si\u1ebft, \u0103n m\u00f2n khe\/nhi\u1ec5m b\u1ea9n t\u1eeb th\u00e9p \u0111en trong thi c\u00f4ng h\u1ed7n h\u1ee3p.<\/p>\n<h2 id=\"toc-1-2-ke-hoach-an-toan-va-to-chuc-thi-cong-khong-thoa-\"><span class=\"ez-toc-section\" id=\"2_Ke_hoach_an_toan_va_to_chuc_thi_cong_Khong_thoa_hiep\"><\/span>2) K\u1ebf ho\u1ea1ch an to\u00e0n v\u00e0 t\u1ed5 ch\u1ee9c thi c\u00f4ng: Kh\u00f4ng th\u1ecfa hi\u1ec7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"21_Tai_lieu_va_phan_quyen\"><\/span>2.1. T\u00e0i li\u1ec7u v\u00e0 ph\u00e2n quy\u1ec1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; K\u1ebf ho\u1ea1ch n\u00e2ng h\u1ea1\/rigging (Lift Plan) k\u00e8m bi\u1ec3u \u0111\u1ed3 t\u1ea3i c\u1ea9u, \u0111i\u1ec3m treo, thanh gi\u1eb1ng\/spreader beam, t\u00ednh to\u00e1n t\u00e2m kh\u1ed1i (CG).<br \/>\n&#8211; Bi\u1ec7n ph\u00e1p thi c\u00f4ng, \u0111\u00e1nh gi\u00e1 r\u1ee7i ro (JSA), gi\u1ea5y ph\u00e9p l\u00e0m vi\u1ec7c n\u00f3ng (Hot Work Permit).<br \/>\n&#8211; Quy tr\u00ecnh h\u00e0n WPS\/\u0111\u00e1nh gi\u00e1 PQR\/th\u1ee3 h\u00e0n WPQ theo AWS D1.6 (Structural Welding Code \u2013 Stainless Steel).<br \/>\n&#8211; K\u1ebf ho\u1ea1ch \u1ee9ng c\u1ee9u kh\u1ea9n c\u1ea5p, ph\u00e2n c\u00f4ng ch\u1ec9 huy c\u1ea9u v\u00e0 gi\u00e1m s\u00e1t an to\u00e0n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"22_An_toan_lam_viec_tren_cao_va_nang_ha\"><\/span>2.2. An to\u00e0n l\u00e0m vi\u1ec7c tr\u00ean cao v\u00e0 n\u00e2ng h\u1ea1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Tu\u00e2n th\u1ee7 QCVN 18:2021\/BXD: d\u00e2y an to\u00e0n to\u00e0n th\u00e2n, \u0111i\u1ec3m neo \u0111\u1ea1t chu\u1ea9n, s\u00e0n thao t\u00e1c\/gi\u00e0n gi\u00e1o ki\u1ec3m \u0111\u1ecbnh.<br \/>\n&#8211; D\u00f9ng \u0111ai v\u1ea3i t\u1ed5ng h\u1ee3p (webbing sling) c\u00f3 b\u1ea3o v\u1ec7 c\u1ea1nh, tr\u00e1nh c\u00e1p th\u00e9p c\u1ea5n x\u01b0\u1edbc b\u1ec1 m\u1eb7t Inox; l\u00f3t cao su\/nh\u1ef1a t\u1ea1i \u0111i\u1ec3m t\u1ef3.<br \/>\n&#8211; G\u1eafn tai treo\/\u0111i\u1ec3m treo c\u00f3 t\u00ednh to\u00e1n; th\u1eed n\u00e2ng t\u0129nh\/d\u1ed9ng khi c\u1ea7n; kh\u00f4ng \u0111\u1ee9ng d\u01b0\u1edbi t\u1ea3i treo.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"23_An_toan_han_cat_Inox\"><\/span>2.3. An to\u00e0n h\u00e0n c\u1eaft Inox<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Th\u00f4ng gi\u00f3 h\u00fat c\u1ee5c b\u1ed9 (LEV) t\u1ea1i m\u1ecf h\u00e0n; theo d\u00f5i Cr(VI); trang b\u1ecb m\u1eb7t n\u1ea1 l\u1ecdc P100\/ABEK khi th\u00f4ng gi\u00f3 h\u1ea1n ch\u1ebf.<br \/>\n&#8211; B\u1ea3o v\u1ec7 m\u1eaft\/da kh\u1ecfi b\u1ee9c x\u1ea1 h\u1ed3 quang; qu\u1ea3n l\u00fd b\u00ecnh kh\u00ed, \u0111i\u1ec7n h\u00e0n, ti\u1ebfp \u0111\u1ecba chu\u1ea9n.<br \/>\n&#8211; Qu\u1ea3n l\u00fd tia l\u1eeda\/c\u1eaft: kh\u00f4ng \u0111\u1ec3 b\u1eafn v\u00e0o b\u1ec1 m\u1eb7t Inox; che ch\u1eafn khu v\u1ef1c b\u1eb1ng t\u1ea5m ch\u1ecbu l\u1eeda s\u1ea1ch.<\/p>\n<h2 id=\"toc-2-3-chien-luoc-chong-bien-dang-tu-thiet-ke-toi-lap-d\"><span class=\"ez-toc-section\" id=\"3_Chien_luoc_chong_bien_dang_tu_thiet_ke_toi_lap_dung\"><\/span>3) Chi\u1ebfn l\u01b0\u1ee3c ch\u1ed1ng bi\u1ebfn d\u1ea1ng: t\u1eeb thi\u1ebft k\u1ebf t\u1edbi l\u1eafp d\u1ef1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"31_Giai_doan_thiet_ke_chuan_bi\"><\/span>3.1. Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf &#038; chu\u1ea9n b\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; L\u1ef1a ch\u1ecdn m\u00e1c: \u01afu ti\u00ean 304L\/316L gi\u1ea3m nh\u1ea1y c\u1ea3m h\u00f3a b\u1ec1n ngu\u1ed9i v\u00e0 \u0103n m\u00f2n li\u00ean tinh.<br \/>\n&#8211; T\u1ed1i \u01b0u chi ti\u1ebft: b\u1ed5 sung g\u00e2n t\u0103ng c\u1ee9ng\/gi\u1eb1ng t\u1ea1m; h\u1ea1n ch\u1ebf h\u00e0n d\u00e0i li\u00ean t\u1ee5c \u1edf b\u1ea3n m\u1ecfng; d\u00f9ng li\u00ean k\u1ebft c\u01a1 kh\u00ed khi ph\u00f9 h\u1ee3p.<br \/>\n&#8211; Gia c\u00f4ng m\u00e9p ch\u00ednh x\u00e1c: khe h\u1edf g\u1ed1c (root gap) \u0111\u1ed3ng nh\u1ea5t; v\u00e1t m\u00e9p \u0111\u00fang WPS \u0111\u1ec3 gi\u1ea3m l\u01b0\u1ee3ng \u0111\u1eafp.<br \/>\n&#8211; \u0110\u1ed3 g\u00e1, n\u1eb9p c\u1ee9ng (strongbacks), thanh n\u1eb9p \u0111\u1ed3ng\/l\u00e0m ngu\u1ed9i c\u1ee5c b\u1ed9 (chill bars) \u0111\u1ec3 ph\u00e2n t\u00e1n nhi\u1ec7t; k\u1eb9p ch\u1eb7t hai ph\u00eda m\u1ed1i h\u00e0n.<br \/>\n&#8211; D\u1ef1 ph\u00f2ng bi\u1ebfn d\u1ea1ng (preset\/camber): t\u1ea1o \u0111\u1ed9 \u201cng\u1eeda\u201d tr\u01b0\u1edbc \u1edf d\u1ea7m\/b\u1ea3n ch\u1ecbu h\u00e0n theo kinh nghi\u1ec7m ho\u1eb7c m\u00f4 ph\u1ecfng nhi\u1ec7t (FEM) n\u1ebfu k\u1ebft c\u1ea5u quan tr\u1ecdng.<br \/>\n&#8211; \u0110\u00e1nh d\u1ea5u kh\u1edbp l\u1eafp (match-mark) v\u00e0 ch\u1ea1y th\u1eed l\u1eafp (trial fit) t\u1ea1i x\u01b0\u1edfng cho c\u00e1c m\u00f4-\u0111un l\u1edbn.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"32_Kiem_soat_trong_qua_trinh_han\"><\/span>3.2. Ki\u1ec3m so\u00e1t trong qu\u00e1 tr\u00ecnh h\u00e0n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Quy tr\u00ecnh h\u00e0n:<br \/>\n  &#8211; GTAW (TIG) cho pass g\u1ed1c\/chi ti\u1ebft m\u1ea3nh, GMAW xung (Pulsed MIG) cho hi\u1ec7u su\u1ea5t\/bi\u1ebfn d\u1ea1ng th\u1ea5p; FCAW-S\/SAW inox khi ph\u00f9 h\u1ee3p thi\u1ebft b\u1ecb.<br \/>\n  &#8211; H\u1ea1n ch\u1ebf nhi\u1ec7t \u0111\u1ea7u v\u00e0o (Heat Input) theo WPS; duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 gi\u1eefa l\u1edbp (interpass) \u2264150\u00b0C v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 austenitic.<br \/>\n&#8211; Tr\u00ecnh t\u1ef1 h\u00e0n:<br \/>\n  &#8211; H\u00e0n \u0111\u1ed1i x\u1ee9ng, chia \u0111o\u1ea1n (skip) v\u00e0 back-step; tr\u00e1nh r\u1ea3i m\u1ed9t chi\u1ec1u d\u00e0i li\u00ean t\u1ee5c.<br \/>\n  &#8211; Tack weld ng\u1eafn, kho\u1ea3ng c\u00e1ch 150\u2013300 mm; m\u00e0i b\u1ecf\/ho\u00e0n thi\u1ec7n tack tr\u01b0\u1edbc khi h\u00e0n ph\u1ee7.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc m\u1ed1i h\u00e0n \u201c\u0111\u1ee7 d\u00f9ng\u201d: Tr\u00e1nh \u201coverwelding\u201d v\u00ec m\u1ed7i mm th\u1eeba l\u00e0m t\u0103ng co ng\u00f3t v\u00e0 bi\u1ebfn d\u1ea1ng \u0111\u00e1ng k\u1ec3.<br \/>\n&#8211; B\u1ea3o v\u1ec7 m\u1eb7t sau: Purge Argon cho k\u1ebft c\u1ea5u k\u00edn (\u1ed1ng\/h\u1ed9p), m\u1ee5c ti\u00eau O2 < 100 ppm \u0111\u1ec3 tr\u00e1nh \u201csugaring\u201d l\u00e0m suy gi\u1ea3m c\u01a1 t\u00ednh\/ch\u1ed1ng \u0103n m\u00f2n.\n- Thi\u1ebft b\u1ecb \u0111o nhanh: nhi\u1ec7t b\u00fat (Tempilstik), sensor O2 cho purge, th\u01b0\u1edbc \u0111o bi\u1ebfn d\u1ea1ng theo d\u00f5i cong v\u00eanh t\u1ee9c th\u1eddi \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh tr\u00ecnh t\u1ef1.\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"33_Sau_han_lam_sach_thu_dong_hoa_va_nan_chinh\"><\/span>3.3. Sau h\u00e0n: l\u00e0m s\u1ea1ch, th\u1ee5 \u0111\u1ed9ng h\u00f3a v\u00e0 n\u1eafn ch\u1ec9nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Lo\u1ea1i b\u1ecf m\u00e0u nhi\u1ec7t\/oxit: ch\u1ecdn nh\u00fang\/gel t\u1ea9y (pickling) v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ASTM A380\/A967 (axit nitric\/citric); r\u1eeda trung h\u00f2a \u0111\u00fang quy tr\u00ecnh.<br \/>\n&#8211; D\u1ee5ng c\u1ee5 ch\u1ec9 d\u00f9ng cho Inox: b\u00e0n ch\u1ea3i\/m\u0169i \u0111\u00e1 Inox ri\u00eang, tr\u00e1nh nhi\u1ec5m s\u1eaft.<br \/>\n&#8211; N\u1eafn ch\u1ec9nh: \u01afu ti\u00ean c\u01a1 kh\u00ed (con \u0111\u1ed9i, \u00e9p, gia t\u1ea3i \u0111\u1ed1i x\u1ee9ng). H\u1ea1n ch\u1ebf n\u1eafn b\u1eb1ng nhi\u1ec7t; n\u1ebfu b\u1ea5t kh\u1ea3 kh\u00e1ng, gi\u1eef nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, th\u1eddi gian ng\u1eafn, tr\u00e1nh l\u01b0u l\u00e2u trong v\u00f9ng 425\u2013870\u00b0C (v\u00f9ng nh\u1ea1y c\u1ea3m h\u00f3a) v\u00e0 ki\u1ec3m so\u00e1t b\u1eb1ng b\u00fat nhi\u1ec7t; d\u00f9ng th\u00e9p \u201cL\u201d \u0111\u1ec3 gi\u1ea3m r\u1ee7i ro.<\/p>\n<h2 id=\"toc-3-4-lap-dung-tai-hien-truong-can-chinh-lien-ket-va-c\"><span class=\"ez-toc-section\" id=\"4_Lap_dung_tai_hien_truong_can_chinh_lien_ket_va_chong_se_lanh\"><\/span>4) L\u1eafp d\u1ef1ng t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng: c\u0103n ch\u1ec9nh, li\u00ean k\u1ebft v\u00e0 ch\u1ed1ng se l\u1ea1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u0110\u1ecbnh v\u1ecb v\u00e0 c\u0103n ch\u1ec9nh:<br \/>\n  &#8211; Ki\u1ec3m tra bul\u00f4ng neo, cao \u0111\u1ed9 b\u1eb1ng \u00eake laser\/total station; d\u00f9ng \u0111\u1ec7m v\u00e0 \u00ea-cu c\u0103n (leveling nuts) ho\u1eb7c v\u1eefa kh\u00f4ng co ng\u00f3t.<br \/>\n  &#8211; Dung sai th\u1ef1c t\u1ebf n\u00ean \u0111\u1eb7t m\u1ee5c ti\u00eau kh\u1eaft khe h\u01a1n y\u00eau c\u1ea7u thi\u1ebft k\u1ebf (v\u00ed d\u1ee5: \u0111\u1ed9 th\u1eb3ng v\u00e0 \u0111\u1ed9 \u0111\u1ee9ng \u2264 L\/1000 n\u1ebfu kh\u00f4ng c\u00f3 quy \u0111\u1ecbnh kh\u00e1c c\u1ee7a thi\u1ebft k\u1ebf\/ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng).<br \/>\n&#8211; Bu l\u00f4ng Inox v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng se l\u1ea1nh (galling):<br \/>\n  &#8211; Ch\u1ecdn c\u1ea5p \u0111\u00fang (A2-70\/A4-70), ren chu\u1ea9n; d\u00f9ng ch\u1ea5t ch\u1ed1ng k\u1eb9t\/anti-seize g\u1ed1c MoS2 ho\u1eb7c nickel; si\u1ebft theo ph\u01b0\u01a1ng ph\u00e1p 3 b\u01b0\u1edbc v\u00e0 h\u00ecnh sao \u0111\u1ed1i x\u1ee9ng.<br \/>\n  &#8211; T\u00ednh m\u00f4-men si\u1ebft theo h\u1ec7 s\u1ed1 ma s\u00e1t th\u1ef1c t\u1ebf (K-factor), l\u01b0u \u00fd b\u00f4i tr\u01a1n l\u00e0m gi\u1ea3m m\u00f4-men c\u1ea7n thi\u1ebft; ki\u1ec3m ch\u1ee9ng l\u1ef1c k\u1eb9p b\u1eb1ng m\u00e1y Skidmore khi quan tr\u1ecdng.<br \/>\n&#8211; C\u00e1ch ly \u0111i\u1ec7n h\u00f3a:<br \/>\n  &#8211; Khi ti\u1ebfp x\u00fac v\u1edbi th\u00e9p carbon\/nh\u00f4m trong m\u00f4i tr\u01b0\u1eddng \u1ea9m m\u1eb7n, d\u00f9ng \u0111\u1ec7m\/long \u0111en c\u00e1ch \u0111i\u1ec7n (nylon\/PTFE), s\u01a1n c\u00e1ch ly b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac, tr\u00e1nh pin \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; B\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t:<br \/>\n  &#8211; Gi\u1eef phim PE \u0111\u1ebfn khi ho\u00e0n thi\u1ec7n; ph\u1ee7 v\u1ea3i b\u1ea1t s\u1ea1ch \u1edf v\u00f9ng thao t\u00e1c; kh\u00f4ng \u0111\u1eb7t Inox tr\u00ean d\u1ea7m th\u00e9p \u0111en tr\u1ea7n; l\u00f3t g\u1ed7\/nh\u1ef1a.<\/p>\n<h2 id=\"toc-4-5-quan-ly-vat-tu-va-moi-truong-thi-cong\"><span class=\"ez-toc-section\" id=\"5_Quan_ly_vat_tu_va_moi_truong_thi_cong\"><\/span>5) Qu\u1ea3n l\u00fd v\u1eadt t\u01b0 v\u00e0 m\u00f4i tr\u01b0\u1eddng thi c\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; B\u1ea3o qu\u1ea3n v\u00e0 v\u1eadn chuy\u1ec3n: k\u00ea \u0111\u1ee1 kh\u00f4 r\u00e1o, tr\u00e1nh m\u01b0a bi\u1ec3n\/xi m\u0103ng \u1ea9m; \u0111ai v\u1ea3i c\u00f3 g\u00f3c b\u1ea3o v\u1ec7; c\u1ea5m m\u1ea1t b\u1eafn t\u1eeb khu c\u1eaft th\u00e9p \u0111en bay v\u00e0o.<br \/>\n&#8211; L\u00e0m s\u1ea1ch \u0111\u1ecbnh k\u1ef3: lau mu\u1ed1i\/clorua, \u0111\u1eb7c bi\u1ec7t c\u00f4ng tr\u00ecnh ven bi\u1ec3n; ch\u1ecdn 316L ho\u1eb7c duplex cho m\u00f4i tr\u01b0\u1eddng clorua cao.<br \/>\n&#8211; Tr\u00e1nh gia c\u00f4ng l\u1eabn: khu c\u1eaft m\u00e0i Inox t\u00e1ch bi\u1ec7t, d\u1ee5ng c\u1ee5 ri\u00eang bi\u1ec7t \u0111\u1ec3 ng\u1eeba nhi\u1ec5m s\u1eaft.<\/p>\n<h2 id=\"toc-5-6-kiem-soat-chat-luong-qc-va-nghiem-thu\"><span class=\"ez-toc-section\" id=\"6_Kiem_soat_chat_luong_QC_va_nghiem_thu\"><\/span>6) Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (QC) v\u00e0 nghi\u1ec7m thu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; T\u00e0i li\u1ec7u: WPS\/PQR\/WPQR theo AWS D1.6; Nh\u1eadt k\u00fd h\u00e0n, b\u1ea3n \u0111\u1ed3 m\u1ed1i h\u00e0n.<br \/>\n&#8211; NDT ph\u00f9 h\u1ee3p v\u1edbi Inox:<br \/>\n  &#8211; Ki\u1ec3m tra th\u1ea9m th\u1ea5u m\u00e0u\/hu\u1ef3nh quang (PT) cho n\u1ee9t b\u1ec1 m\u1eb7t.<br \/>\n  &#8211; Ch\u1ee5p \u1ea3nh RT ho\u1eb7c si\u00eau \u00e2m UT n\u01a1i y\u00eau c\u1ea7u; soi n\u1ed9i soi (boroscope) cho m\u1ed1i h\u00e0n k\u00edn sau purge.<br \/>\n&#8211; Ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn:<br \/>\n  &#8211; Theo AWS D1.6 cho khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t (r\u1ed7 kh\u00ed, ch\u1ea3y loang, ch\u00e2n kh\u00f4ng ng\u1ea5u) v\u00e0 khe h\u1edf\/\u0111i\u1ec1n \u0111\u1ea7y.<br \/>\n  &#8211; B\u1ec1 m\u1eb7t sau x\u1eed l\u00fd: kh\u00f4ng c\u00f2n oxit m\u00e0u, kh\u00f4ng v\u1ec7t m\u00e0i s\u00e2u; \u0111\u1ed9 nh\u00e1m ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng.<br \/>\n&#8211; \u0110o \u0111\u1ea1c h\u00ecnh h\u1ecdc: d\u00f9ng th\u01b0\u1edbc d\u00e2y, niv\u00f4 laser, th\u01b0\u1edbc th\u1eb3ng, v\u00e0 n\u1ebfu c\u1ea7n m\u00e1y qu\u00e9t 3D \u0111\u1ec3 ki\u1ec3m ch\u1ee9ng \u0111\u1ed9 v\u00f5ng\/cong xo\u1eafn so v\u1edbi m\u00f4 h\u00ecnh. Ghi bi\u00ean b\u1ea3n v\u00e0 k\u1ebf ho\u1ea1ch kh\u1eafc ph\u1ee5c n\u1ebfu v\u01b0\u1ee3t gi\u1edbi h\u1ea1n.<\/p>\n<h2 id=\"toc-6-7-quy-trinh-mau-lap-dung-khung-san-thao-tac-inox-3\"><span class=\"ez-toc-section\" id=\"7_Quy_trinh_mau_lap_dung_khung_san_thao_tac_Inox_304L_day_6%E2%80%9310_mm\"><\/span>7) Quy tr\u00ecnh m\u1eabu: l\u1eafp d\u1ef1ng khung s\u00e0n thao t\u00e1c Inox 304L d\u00e0y 6\u201310 mm<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Tr\u01b0\u1edbc thi c\u00f4ng:<br \/>\n  &#8211; Th\u1ea9m \u0111\u1ecbnh b\u1ea3n v\u1ebd, x\u00e1c nh\u1eadn dung sai; duy\u1ec7t WPS GMAW-P + GTAW g\u1ed1c, interpass \u2264150\u00b0C; l\u1eadp Lift Plan.<br \/>\n  &#8211; Chu\u1ea9n b\u1ecb \u0111\u1ed3 g\u00e1, n\u1eb9p t\u1ea1m, \u0111\u1ec7m c\u00e1ch ly; thi\u1ebft b\u1ecb \u0111o O2 cho purge.<br \/>\n&#8211; T\u1ea1i x\u01b0\u1edfng:<br \/>\n  &#8211; Trial fit c\u00e1c m\u00f4-\u0111un; \u0111\u00e1nh d\u1ea5u match-mark; h\u00e0n \u0111\u1ed1i x\u1ee9ng, chia \u0111o\u1ea1n; purge Argon cho m\u1ed1i k\u00edn; x\u1eed l\u00fd pickling + passivation.<br \/>\n  &#8211; Ki\u1ec3m tra PT 10% m\u1ed1i h\u00e0n \u0111i\u1ec3n h\u00ecnh; \u0111o bi\u1ebfn d\u1ea1ng, n\u1eafn c\u01a1 kh\u00ed n\u1ebfu c\u1ea7n.<br \/>\n&#8211; V\u1eadn chuy\u1ec3n &#038; hi\u1ec7n tr\u01b0\u1eddng:<br \/>\n  &#8211; D\u00f9ng spreader beam v\u00e0 \u0111ai v\u1ea3i; che ph\u1ee7 b\u1ec1 m\u1eb7t; kh\u00f4ng x\u1ebfp ch\u1ed3ng tr\u1ef1c ti\u1ebfp l\u00ean th\u00e9p \u0111en.<br \/>\n  &#8211; L\u1eafp \u0111\u1eb7t theo tr\u00ecnh t\u1ef1 t\u1eeb khung ch\u00ednh \u2192 gi\u1eb1ng \u2192 s\u00e0n; si\u1ebft bul\u00f4ng Inox c\u00f3 anti-seize theo 3 b\u01b0\u1edbc; c\u0103n ch\u1ec9nh laser.<br \/>\n  &#8211; Ki\u1ec3m tra ho\u00e0n th\u00e0nh: PT m\u1ed1i h\u00e0n hi\u1ec7n tr\u01b0\u1eddng, nghi\u1ec7m thu h\u00ecnh h\u1ecdc, v\u1ec7 sinh cu\u1ed1i c\u00f9ng v\u00e0 b\u00e0n giao.<\/p>\n<h2 id=\"toc-7-8-10-loi-pho-bien-va-cach-tranh\"><span class=\"ez-toc-section\" id=\"8_10_loi_pho_bien_va_cach_tranh\"><\/span>8) 10 l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>1) Kh\u00f4ng purge m\u1eb7t sau \u2192 m\u1ed1i h\u00e0n \u0111\u01b0\u1eddng ch\u00e2n b\u1ecb \u201c\u0111\u01b0\u1eddng m\u00eda\u201d, \u0103n m\u00f2n s\u1edbm. Kh\u1eafc ph\u1ee5c: ki\u1ec3m so\u00e1t O2 <100 ppm. \n2) Overwelding \u2192 bi\u1ebfn d\u1ea1ng l\u1edbn. Kh\u1eafc ph\u1ee5c: ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc m\u1ed1i h\u00e0n theo t\u00ednh to\u00e1n.\n3) H\u00e0n m\u1ed9t chi\u1ec1u li\u00ean t\u1ee5c \u2192 co ng\u00f3t l\u1ec7ch. Kh\u1eafc ph\u1ee5c: back-step\/skip \u0111\u1ed1i x\u1ee9ng.\n4) D\u00f9ng b\u00e0n ch\u1ea3i th\u00e9p \u0111en \u2192 nhi\u1ec5m s\u1eaft. Kh\u1eafc ph\u1ee5c: d\u1ee5ng c\u1ee5 \u201cInox-only\u201d.\n5) Kh\u00f4ng ch\u1ed1ng se l\u1ea1nh bul\u00f4ng \u2192 k\u1eb9t ren, \u0111\u1ee9t bul\u00f4ng. Kh\u1eafc ph\u1ee5c: anti-seize, m\u00f4-men ph\u00f9 h\u1ee3p.\n6) Kh\u00f4ng b\u1ea3o v\u1ec7 m\u00e9p s\u1eafc khi c\u1ea9u \u2192 r\u00e1ch \u0111ai, x\u01b0\u1edbc b\u1ec1 m\u1eb7t. Kh\u1eafc ph\u1ee5c: b\u1ea3o v\u1ec7 c\u1ea1nh, t\u1ea5m l\u00f3t.\n7) H\u00fat kh\u00f3i k\u00e9m khi h\u00e0n Inox \u2192 ph\u01a1i nhi\u1ec5m Cr(VI). Kh\u1eafc ph\u1ee5c: LEV + PPE \u0111\u1ea1t chu\u1ea9n.\n8) D\u00f9ng nhi\u1ec7t n\u1eafn l\u00e2u trong v\u00f9ng 425\u2013870\u00b0C \u2192 nguy c\u01a1 nh\u1ea1y c\u1ea3m h\u00f3a. Kh\u1eafc ph\u1ee5c: \u01b0u ti\u00ean n\u1eafn c\u01a1, ki\u1ec3m so\u00e1t nhi\u1ec7t.\n9) L\u1eabn khu v\u1ef1c gia c\u00f4ng v\u1edbi th\u00e9p \u0111en \u2192 g\u1ec9 b\u1ec1 m\u1eb7t sau v\u00e0i tu\u1ea7n. Kh\u1eafc ph\u1ee5c: ph\u00e2n khu s\u1ea1ch-b\u1ea9n.\n10) Kh\u00f4ng trial fit m\u00f4-\u0111un l\u1edbn \u2192 l\u1eafp kh\u00f4ng kh\u1edbp, c\u1eaft s\u1eeda t\u1ed1n k\u00e9m. Kh\u1eafc ph\u1ee5c: l\u1eafp th\u1eed x\u01b0\u1edfng.\n\n\n\n<h2 id=\"toc-8-tai-lieu-tham-khao\"><span class=\"ez-toc-section\" id=\"Tai_lieu_tham_khao\"><\/span>T\u00e0i li\u1ec7u tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; AWS D1.6\/D1.6M: Structural Welding Code \u2013 Stainless Steel, American Welding Society.<br \/>\n&#8211; EN 1993-1-4: Eurocode 3 \u2013 Design of steel structures \u2013 Part 1-4: General rules \u2013 Stainless steels.<br \/>\n&#8211; ASTM A380\/A967: Cleaning, Descaling, and Passivation of Stainless Steel Parts.<br \/>\n&#8211; QCVN 18:2021\/BXD \u2013 Quy chu\u1ea9n k\u1ef9 thu\u1eadt qu\u1ed1c gia v\u1ec1 an to\u00e0n trong thi c\u00f4ng x\u00e2y d\u1ef1ng (B\u1ed9 X\u00e2y d\u1ef1ng Vi\u1ec7t Nam).<br \/>\n&#8211; NIOSH\/OSHA guidance on Hexavalent Chromium in welding fumes.<br \/>\n&#8211; The Welding Institute (TWI): Distortion in welding \u2013 causes and control.<br \/>\n&#8211; Nickel Institute: Design guidelines for structural stainless steel.<\/p>\n<h2 id=\"toc-9-ket-luan\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>L\u1eafp d\u1ef1ng k\u1ebft c\u1ea5u Inox l\u1edbn mu\u1ed1n \u201c\u0111\u00fang ngay t\u1eeb \u0111\u1ea7u\u201d ph\u1ea3i \u0111\u1ed3ng th\u1eddi kh\u00f3a ba tr\u1ee5 c\u1ed9t: an to\u00e0n n\u00e2ng h\u1ea1 v\u00e0 l\u00e0m vi\u1ec7c n\u00f3ng theo QCVN 18, ki\u1ec3m so\u00e1t bi\u1ebfn d\u1ea1ng d\u1ef1a tr\u00ean thi\u1ebft k\u1ebf \u2013 tr\u00ecnh t\u1ef1 h\u00e0n \u2013 \u0111\u1ed3 g\u00e1 \u2013 x\u1eed l\u00fd sau h\u00e0n \u0111\u00fang chu\u1ea9n, v\u00e0 qu\u1ea3n tr\u1ecb b\u1ec1 m\u1eb7t\/chi ti\u1ebft bu l\u00f4ng \u0111\u1eb7c th\u00f9 c\u1ee7a Inox. \u00c1p d\u1ee5ng nghi\u00eam WPS theo AWS D1.6, purge chu\u1ea9n, h\u00e0n \u0111\u1ed1i x\u1ee9ng, ch\u1ed1ng se l\u1ea1nh v\u00e0 QC theo k\u1ebf ho\u1ea1ch s\u1ebd gi\u1ea3m m\u1ea1nh cong v\u00eanh, tr\u00e1nh s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m, r\u00fat ng\u1eafn ti\u1ebfn \u0111\u1ed9 v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n \u2013 th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh Inox.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn m\u00e1c Inox, WPS t\u1ed1i \u01b0u v\u00e0 gi\u1ea3i ph\u00e1p l\u1eafp d\u1ef1ng ph\u00f9 h\u1ee3p th\u1ef1c t\u1ebf c\u00f4ng tr\u01b0\u1eddng H\u00e0 N\u1ed9i? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 v\u1eadt li\u1ec7u h\u1ed7 tr\u1ee3 v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn l\u1eafp d\u1ef1ng k\u1ebft c\u1ea5u Inox l\u1edbn: an to\u00e0n n\u00e2ng h\u1ea1, ki\u1ec3m so\u00e1t bi\u1ebfn d\u1ea1ng khi h\u00e0n, bu l\u00f4ng ch\u1ed1ng se l\u1ea1nh, QC theo AWS D1.6 v\u00e0 QCVN 18:2021\/BXD.<\/p>\n","protected":false},"author":7,"featured_media":1063,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2312","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2312","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=2312"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2312\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1063"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2312"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2312"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}