{"id":2618,"date":"2026-09-26T12:35:07","date_gmt":"2026-09-26T05:35:07","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/"},"modified":"2026-09-26T12:35:07","modified_gmt":"2026-09-26T05:35:07","slug":"noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/","title":{"rendered":"N\u1ed1i \u1ed1ng Inox: H\u00e0n, ren hay b\u00edch? \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 c\u00e1ch ch\u1ecdn"},"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;2618&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;N\u1ed1i \u1ed1ng Inox: H\u00e0n, ren hay b\u00edch? \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 c\u00e1ch ch\u1ecdn&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 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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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Tong_quan_3_phuong_phap_noi_ong_Inox_pho_bien\" >T\u1ed5ng quan 3 ph\u01b0\u01a1ng ph\u00e1p n\u1ed1i \u1ed1ng Inox ph\u1ed5 bi\u1ebfn<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Han_ong_Inox_TIG_MIG_SMAW_orbital\" >H\u00e0n \u1ed1ng Inox (TIG, MIG, SMAW, orbital)<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Uu_nhuoc_diem_va_pham_vi_ap_dung\" >\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 ph\u1ea1m vi \u00e1p d\u1ee5ng<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Quy_trinh_han_co_ban_cho_ong_Inox\" >Quy tr\u00ecnh h\u00e0n c\u01a1 b\u1ea3n cho \u1ed1ng Inox<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Loi_thuong_gap_va_kiem_tra_chat_luong\" >L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Noi_ren_Inox\" >N\u1ed1i ren Inox<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Kieu_ren_va_tieu_chuan_nhan_dang\" >Ki\u1ec3u ren v\u00e0 ti\u00eau chu\u1ea9n nh\u1eadn d\u1ea1ng<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Uu_nhuoc_diem_va_ung_dung\" >\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Quy_trinh_lap_dat_kin_tranh_ro_ri\" >Quy tr\u00ecnh l\u1eafp \u0111\u1eb7t k\u00edn, tr\u00e1nh r\u00f2 r\u1ec9<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Noi_bich_Inox\" >N\u1ed1i b\u00edch Inox<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Loai_bich_gioang_bulong_va_tieu_chuan\" >Lo\u1ea1i b\u00edch, gio\u0103ng, bulong v\u00e0 ti\u00eau chu\u1ea9n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Uu_nhuoc_diem_va_ung_dung-2\" >\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Quy_trinh_siet_bich_dung_ky_thuat\" >Quy tr\u00ecnh si\u1ebft b\u00edch \u0111\u00fang k\u1ef9 thu\u1eadt<\/a><\/li><\/ul><\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#So_sanh_nhanh_va_cach_chon_theo_yeu_cau\" >So s\u00e1nh nhanh v\u00e0 c\u00e1ch ch\u1ecdn theo y\u00eau c\u1ea7u<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Vi_du_thuc_te_va_khuyen_nghi\" >V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb<\/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\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Vat_tu_va_cau_hinh_khuyen_nghi\" >V\u1eadt t\u01b0 v\u00e0 c\u1ea5u h\u00ecnh khuy\u1ebfn ngh\u1ecb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#Cac_loi_pho_bien_va_cach_tranh\" >C\u00e1c 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-19\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#FAQ_nhanh\" >FAQ nhanh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#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-21\" href=\"https:\/\/inoxcuongthinh.com\/noi-ong-inox-han-ren-hay-bich-uu-nhuoc-diem-va-cach-chon\/#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-tong-quan-3-phuong-phap-noi-ong-inox-pho-bien\">T\u1ed5ng quan 3 ph\u01b0\u01a1ng ph\u00e1p n\u1ed1i \u1ed1ng Inox ph\u1ed5 bi\u1ebfn<\/a><\/li>\n<li><a href=\"#toc-1-han-ong-inox-tig-mig-smaw-orbital\">H\u00e0n \u1ed1ng Inox (TIG, MIG, SMAW, orbital)<\/a><\/li>\n<li><a href=\"#toc-2-noi-ren-inox\">N\u1ed1i ren Inox<\/a><\/li>\n<li><a href=\"#toc-3-noi-bich-inox\">N\u1ed1i b\u00edch Inox<\/a><\/li>\n<li><a href=\"#toc-4-so-sanh-nhanh-va-cach-chon-theo-yeu-cau\">So s\u00e1nh nhanh v\u00e0 c\u00e1ch ch\u1ecdn theo y\u00eau c\u1ea7u<\/a><\/li>\n<li><a href=\"#toc-5-vi-du-thuc-te-va-khuyen-nghi\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb<\/a><\/li>\n<li><a href=\"#toc-6-vat-tu-va-cau-hinh-khuyen-nghi\">V\u1eadt t\u01b0 v\u00e0 c\u1ea5u h\u00ecnh khuy\u1ebfn ngh\u1ecb<\/a><\/li>\n<li><a href=\"#toc-7-cac-loi-pho-bien-va-cach-tranh\">C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-8-faq-nhanh\">FAQ nhanh<\/a><\/li>\n<li><a href=\"#toc-9-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Khi thi\u1ebft k\u1ebf, l\u1eafp \u0111\u1eb7t \u0111\u01b0\u1eddng \u1ed1ng Inox, quy\u1ebft \u0111\u1ecbnh ch\u1ecdn h\u00e0n, n\u1ed1i ren hay n\u1ed1i b\u00edch \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 k\u00edn, \u0111\u1ed9 b\u1ec1n, chi ph\u00ed v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec. B\u00e0i vi\u1ebft n\u00e0y t\u1ed5ng h\u1ee3p ti\u00eau chu\u1ea9n, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m, quy tr\u00ecnh thi c\u00f4ng v\u00e0 m\u1eb9o th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho ba ph\u01b0\u01a1ng ph\u00e1p n\u1ed1i \u1ed1ng Inox ph\u1ed5 bi\u1ebfn. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong b\u1ee9c tranh t\u1ed5ng th\u1ec3 v\u1ec1 \u1ed1ng\/h\u1ed9p Inox, nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ed9c l\u1eadp v\u00e0 \u0111\u1ee7 s\u00e2u \u0111\u1ec3 b\u1ea1n ra quy\u1ebft \u0111\u1ecbnh ngay.<\/p>\n<h2 id=\"toc-0-tong-quan-3-phuong-phap-noi-ong-inox-pho-bien\"><span class=\"ez-toc-section\" id=\"Tong_quan_3_phuong_phap_noi_ong_Inox_pho_bien\"><\/span>T\u1ed5ng quan 3 ph\u01b0\u01a1ng ph\u00e1p n\u1ed1i \u1ed1ng Inox ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; H\u00e0n \u1ed1ng Inox: Li\u00ean k\u1ebft v\u0129nh vi\u1ec5n b\u1eb1ng n\u00f3ng ch\u1ea3y kim lo\u1ea1i, th\u01b0\u1eddng d\u00f9ng TIG\/GTAW, MIG\/GMAW, SMAW; v\u1edbi \u1ed1ng m\u1ecfng v\u00e0 y\u00eau c\u1ea7u v\u1ec7 sinh cao th\u01b0\u1eddng d\u00f9ng TIG ho\u1eb7c h\u00e0n qu\u1ef9 \u0111\u1ea1o (orbital). \u00c1p d\u1ee5ng nhi\u1ec1u cho \u0111\u01b0\u1eddng \u1ed1ng theo ASME B31.3, v\u1eadt t\u01b0 \u1ed1ng ASTM A312 v\u00e0 ph\u1ee5 ki\u1ec7n ASTM A403.<br \/>\n&#8211; N\u1ed1i ren: K\u1ebft n\u1ed1i b\u1eb1ng ren c\u00f4n ho\u1eb7c ren th\u1eb3ng k\u00e8m v\u1eadt li\u1ec7u b\u1ecbt k\u00edn. Ph\u1ed5 bi\u1ebfn \u1edf \u1ed1ng nh\u1ecf (DN \u2264 50, NPS \u2264 2&#8243;). Ti\u00eau chu\u1ea9n ren th\u01b0\u1eddng g\u1eb7p: ISO 7-1 (BSPT), ASME B1.20.1 (NPT). Ph\u1ee5 ki\u1ec7n ren Inox theo ISO 4144.<br \/>\n&#8211; N\u1ed1i b\u00edch: Li\u00ean k\u1ebft m\u1eb7t b\u00edch b\u1eb1ng bulong, c\u00f3 gio\u0103ng l\u00e0m k\u00edn. D\u1ec5 th\u00e1o l\u1eafp, d\u00f9ng cho \u1ed1ng trung-l\u1edbn, thi\u1ebft b\u1ecb, v\u1ecb tr\u00ed c\u1ea7n b\u1ea3o tr\u00ec. Ti\u00eau chu\u1ea9n b\u00edch: ASME B16.5 (Class 150\/300&#8230;), EN 1092-1 (PN10\/16\/40). V\u1eadt li\u1ec7u b\u00edch r\u00e8n ASTM A182.<\/p>\n<h2 id=\"toc-1-han-ong-inox-tig-mig-smaw-orbital\"><span class=\"ez-toc-section\" id=\"Han_ong_Inox_TIG_MIG_SMAW_orbital\"><\/span>H\u00e0n \u1ed1ng Inox (TIG, MIG, SMAW, orbital)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Uu_nhuoc_diem_va_pham_vi_ap_dung\"><\/span>\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 ph\u1ea1m vi \u00e1p d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u01afu \u0111i\u1ec3m:<br \/>\n&#8211; K\u00edn kh\u00ed\/ k\u00edn n\u01b0\u1edbc cao nh\u1ea5t, ch\u1ecbu \u00e1p t\u1ed1t, ch\u1ed1ng rung t\u1ed1t.<br \/>\n&#8211; Th\u1ea9m m\u1ef9 cao, ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng v\u1ec7 sinh (F&#038;B, d\u01b0\u1ee3c, n\u01b0\u1edbc RO) khi x\u1eed l\u00fd m\u1ed1i h\u00e0n \u0111\u00fang chu\u1ea9n.<br \/>\n&#8211; Gi\u1ea3m r\u00f2 r\u1ec9 v\u00e0 \u0111i\u1ec3m b\u1ea3o tr\u00ec so v\u1edbi ren\/b\u00edch.<\/p>\n<p>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<br \/>\n&#8211; Kh\u00f3 th\u00e1o l\u1eafp; chi ph\u00ed nh\u00e2n c\u00f4ng tay ngh\u1ec1 cao.<br \/>\n&#8211; Nguy c\u01a1 bi\u1ebfn m\u00e0u, \u0103n m\u00f2n khe\/m\u1ed1i h\u00e0n n\u1ebfu kh\u00f4ng b\u1ea3o v\u1ec7 m\u1eb7t trong b\u1eb1ng kh\u00ed tr\u01a1 v\u00e0 kh\u00f4ng x\u1eed l\u00fd b\u1ec1 m\u1eb7t sau h\u00e0n.<br \/>\n&#8211; C\u1ea7n ki\u1ec3m so\u00e1t bi\u1ebfn d\u1ea1ng v\u1edbi \u1ed1ng m\u1ecfng.<\/p>\n<p>Ph\u1ea1m vi khuy\u1ebfn ngh\u1ecb:<br \/>\n&#8211; \u0110\u01b0\u1eddng \u1ed1ng \u00e1p l\u1ef1c\/ nhi\u1ec7t \u0111\u1ed9 cao; \u0111\u01b0\u1eddng d\u00e0i; m\u00f4i tr\u01b0\u1eddng rung.<br \/>\n&#8211; Sanitary: TIG ho\u1eb7c h\u00e0n qu\u1ef9 \u0111\u1ea1o, m\u1ed1i h\u00e0n th\u1ea5u, nh\u1eb5n trong, O2 purge th\u1ea5p.<br \/>\n&#8211; K\u00edch th\u01b0\u1edbc: ph\u1ed5 bi\u1ebfn t\u1eeb DN20 tr\u1edf l\u00ean; v\u1edbi DN\u226450 v\u1eabn r\u1ea5t t\u1ed1t n\u1ebfu y\u00eau c\u1ea7u v\u1ec7 sinh\/\u0111\u1ed9 k\u00edn cao.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quy_trinh_han_co_ban_cho_ong_Inox\"><\/span>Quy tr\u00ecnh h\u00e0n c\u01a1 b\u1ea3n cho \u1ed1ng Inox<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Chu\u1ea9n b\u1ecb:<br \/>\n  &#8211; V\u1eadt t\u01b0: \u1ed1ng ASTM A312 (304\/304L, 316\/316L), ph\u1ee5 ki\u1ec7n ASTM A403; que\/ d\u00e2y h\u00e0n t\u01b0\u01a1ng th\u00edch ER308L cho 304\/304L, ER316L cho 316\/316L; kh\u00ed Argon 99.99%.<br \/>\n  &#8211; L\u00e0m s\u1ea1ch m\u00e9p h\u00e0n, lo\u1ea1i b\u1ecf d\u1ea7u\/m\u1ee1 (dung m\u00f4i kh\u00f4ng clo). V\u00e1t m\u00e9p ph\u00f9 h\u1ee3p \u0111\u1ed9 d\u00e0y (SCH10\/SCH40).<br \/>\n  &#8211; Ch\u1ed1ng tr\u1ed9n v\u1eadt li\u1ec7u: tr\u00e1nh nhi\u1ec5m s\u1eaft b\u1ec1 m\u1eb7t b\u1eb1ng d\u1ee5ng c\u1ee5 ri\u00eang cho inox.<br \/>\n&#8211; B\u1ea3o v\u1ec7 m\u1eb7t trong (purge):<br \/>\n  &#8211; D\u00f9ng Argon \u0111\u1ea9y kh\u00ed, \u0111\u1eb7t dam t\u00fai kh\u00ed\/\u0111\u0129a ch\u1eb7n; gi\u1edbi h\u1ea1n O2 c\u00f2n l\u1ea1i < 0.1% (1,000 ppm) cho c\u00f4ng nghi\u1ec7p chung; < 50 ppm cho sanitary cao c\u1ea5p.\n- Th\u1ef1c hi\u1ec7n:\n  - TIG: d\u00f2ng \u1ed5n \u0111\u1ecbnh, h\u1ed3 quang ng\u1eafn; gi\u1eef b\u1ec3 h\u00e0n nh\u1ecf, nhi\u1ec7t v\u00e0o v\u1eeba \u0111\u1ee7, interpass < 150\u00b0C \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1ea1y c\u1ea3m h\u00f3a (sensitization).\n  - H\u00e0n qu\u1ef9 \u0111\u1ea1o: d\u00f9ng \u0111\u1ea7u h\u00e0n orbital cho \u1ed1ng m\u1ecfng DN6\u2013DN114.3, l\u1eb7p l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng, r\u1ea5t ph\u00f9 h\u1ee3p d\u01b0\u1ee3c\/\u0111\u1ed3 u\u1ed1ng.\n- Sau h\u00e0n:\n  - L\u00e0m s\u1ea1ch m\u00e0u nhi\u1ec7t v\u00e0 x\u1ec9 b\u1eb1ng pickling paste ho\u1eb7c t\u1ea9y h\u00f3a h\u1ecdc theo ASTM A380\/A967, sau \u0111\u00f3 th\u1ee5 \u0111\u1ed9ng h\u00f3a b\u1ec1 m\u1eb7t (passivation) \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp Cr2O3.\n  - M\u00e0i\/\u0111\u00e1nh b\u00f3ng g\u1edd trong khi y\u00eau c\u1ea7u sanitary ho\u1eb7c l\u01b0u l\u01b0\u1ee3ng cao.\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Loi_thuong_gap_va_kiem_tra_chat_luong\"><\/span>L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; L\u1ed7i: \u0111\u1ed1t c\u1ea1nh, kh\u00f4ng th\u1ea5u, ng\u1eadm x\u1ec9, r\u1ed7 kh\u00ed do O2 purge k\u00e9m, bi\u1ebfn d\u1ea1ng oval \u1ed1ng.<br \/>\n&#8211; Ph\u00f2ng ng\u1eeba: g\u00e1 \u0111\u1ee1 chu\u1ea9n, ki\u1ec3m so\u00e1t khe h\u1edf root 0.5\u20131.5 mm t\u00f9y chi\u1ec1u d\u00e0y, duy tr\u00ec l\u01b0u l\u01b0\u1ee3ng purge \u1ed5n \u0111\u1ecbnh, ch\u1ecdn d\u00e2y\/que L-grade.<br \/>\n&#8211; Ki\u1ec3m tra:<br \/>\n  &#8211; Th\u1ea9m th\u1ea5u m\u00e0u (PT) theo ISO 3452 cho ph\u00e1t hi\u1ec7n n\u1ee9t\/s\u00e2u kim.<br \/>\n  &#8211; N\u1ed9i soi borescope m\u1ed1i h\u00e0n sanitary.<br \/>\n  &#8211; Th\u1eed k\u00edn \u00e1p (hydrotest) theo m\u00e3 thi\u1ebft k\u1ebf tuy\u1ebfn \u1ed1ng li\u00ean quan (v\u00ed d\u1ee5 ASME B31.3).<br \/>\n  &#8211; \u0110\u1ed1i v\u1edbi y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t: X-quang\/si\u00eau \u00e2m m\u1ed1i h\u00e0n theo ASME Section V.<\/p>\n<h2 id=\"toc-2-noi-ren-inox\"><span class=\"ez-toc-section\" id=\"Noi_ren_Inox\"><\/span>N\u1ed1i ren Inox<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Kieu_ren_va_tieu_chuan_nhan_dang\"><\/span>Ki\u1ec3u ren v\u00e0 ti\u00eau chu\u1ea9n nh\u1eadn d\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; BSPT (R\/Rp theo ISO 7-1): ren c\u00f4n h\u1ec7 m\u00e9t, ph\u1ed5 bi\u1ebfn \u1edf VN v\u00e0 ch\u00e2u \u00c2u.<br \/>\n&#8211; NPT (ASME B1.20.1): ren c\u00f4n theo inch, ph\u1ed5 bi\u1ebfn B\u1eafc M\u1ef9 v\u00e0 hi\u1ec7n di\u1ec7n trong thi\u1ebft b\u1ecb nh\u1eadp kh\u1ea9u.<br \/>\n&#8211; L\u01b0u \u00fd: Kh\u00f4ng tr\u1ed9n BSPT v\u1edbi NPT. Kh\u00e1c g\u00f3c ren v\u00e0 b\u01b0\u1edbc ren; l\u1eafp l\u1eabn d\u1ec5 r\u00f2\/n\u1ee9t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Uu_nhuoc_diem_va_ung_dung\"><\/span>\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u01afu \u0111i\u1ec3m:<br \/>\n&#8211; Thi c\u00f4ng nhanh, kh\u00f4ng c\u1ea7n m\u00e1y h\u00e0n; d\u1ec5 thay th\u1ebf ph\u1ee5 ki\u1ec7n.<br \/>\n&#8211; Chi ph\u00ed \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u th\u1ea5p cho \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf.<\/p>\n<p>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<br \/>\n&#8211; Ch\u1ecbu \u00e1p, ch\u1ecbu rung k\u00e9m h\u01a1n h\u00e0n\/b\u00edch; d\u1ec5 r\u00f2 n\u1ebfu thi c\u00f4ng sai.<br \/>\n&#8211; Kh\u00f4ng ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng v\u1ec7 sinh cao; c\u00f3 t\u00fai b\u1ea9n t\u1ea1i ren.<br \/>\n&#8211; Gi\u1edbi h\u1ea1n k\u00edch th\u01b0\u1edbc th\u1ef1c ti\u1ec5n: DN \u2264 50 (NPS \u2264 2&#8243;).<\/p>\n<p>\u1ee8ng d\u1ee5ng:<br \/>\n&#8211; \u0110\u01b0\u1eddng \u1ed1ng ph\u1ee5 tr\u1ee3, kh\u00ed n\u00e9n \u00e1p th\u1ea5p, n\u01b0\u1edbc s\u1ea1ch c\u00f4ng nghi\u1ec7p, line t\u1ea1m.<br \/>\n&#8211; K\u1ebft n\u1ed1i thi\u1ebft b\u1ecb nh\u1ecf: van, \u0111\u1ed3ng h\u1ed3 \u00e1p, co-n\u1ed1i nhanh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quy_trinh_lap_dat_kin_tranh_ro_ri\"><\/span>Quy tr\u00ecnh l\u1eafp \u0111\u1eb7t k\u00edn, tr\u00e1nh r\u00f2 r\u1ec9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Chu\u1ea9n b\u1ecb:<br \/>\n  &#8211; Ki\u1ec3m tra chu\u1ea9n ren (BSPT hay NPT), l\u00e0m s\u1ea1ch d\u1ea7u\/b\u1ee5i, \u0111\u1ea3m b\u1ea3o kh\u00f4ng s\u1ee9t m\u1ebb.<br \/>\n  &#8211; D\u00f9ng ph\u1ee5 ki\u1ec7n ren Inox theo ISO 4144; b\u1ec1 m\u1eb7t ren s\u1eafc, kh\u00f4ng ba via.<br \/>\n&#8211; V\u1eadt li\u1ec7u l\u00e0m k\u00edn:<br \/>\n  &#8211; B\u0103ng PTFE: 8\u201312 v\u00f2ng cho \u00bd&#8221;\u20131&#8243;, c\u00f3 th\u1ec3 12\u201318 v\u00f2ng cho c\u1ee1 l\u1edbn h\u01a1n; qu\u1ea5n theo chi\u1ec1u ren (c\u00f9ng chi\u1ec1u xi\u1ebft).<br \/>\n  &#8211; Ho\u1eb7c keo l\u00e0m k\u00edn ren g\u1ed1c PTFE\/anaerobic \u0111\u1ea1t chu\u1ea9n \u00e1p-nhi\u1ec7t c\u1ee7a h\u1ec7 (\u0111\u1ecdc TDS).<br \/>\n&#8211; L\u1eafp \u0111\u1eb7t:<br \/>\n  &#8211; Xi\u1ebft tay \u0111\u1ebfn ch\u1eb7t, sau \u0111\u00f3 d\u00f9ng c\u1edd l\u00ea v\u1eb7n th\u00eam 1\u20132 v\u00f2ng. Tr\u00e1nh qu\u00e1 l\u1ef1c g\u00e2y n\u1ee9t ph\u1ee5 ki\u1ec7n.<br \/>\n  &#8211; \u0110\u1ecbnh h\u01b0\u1edbng fitting \u0111\u00fang tr\u01b0\u1edbc khi si\u1ebft cu\u1ed1i \u0111\u1ec3 tr\u00e1nh ph\u1ea3i th\u00e1o l\u1eafp l\u1ea1i.<br \/>\n&#8211; Ki\u1ec3m tra:<br \/>\n  &#8211; Th\u1eed \u00e1p\/ th\u1eed kh\u00ed x\u00e0 ph\u00f2ng ph\u00e1t hi\u1ec7n b\u1ecdt r\u00f2.<br \/>\n  &#8211; Rework b\u1eb1ng t\u0103ng qu\u1ea5n PTFE\/ thay keo, kh\u00f4ng d\u00f9ng keo qu\u00e1 nhi\u1ec1u g\u00e2y tr\u00f4i v\u00e0o h\u1ec7.<\/p>\n<h2 id=\"toc-3-noi-bich-inox\"><span class=\"ez-toc-section\" id=\"Noi_bich_Inox\"><\/span>N\u1ed1i b\u00edch Inox<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Loai_bich_gioang_bulong_va_tieu_chuan\"><\/span>Lo\u1ea1i b\u00edch, gio\u0103ng, bulong v\u00e0 ti\u00eau chu\u1ea9n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Lo\u1ea1i b\u00edch:<br \/>\n  &#8211; Weld Neck (WN): t\u1ed1t nh\u1ea5t cho \u00e1p\/nhi\u1ec7t cao, c\u0103n ch\u1ec9nh t\u1ed1t, gi\u1ea3m \u1ee9ng su\u1ea5t.<br \/>\n  &#8211; Slip-On (SO): d\u1ec5 l\u1eafp, gi\u00e1 h\u1ee3p l\u00fd; th\u00edch h\u1ee3p \u00e1p th\u1ea5p-trung b\u00ecnh.<br \/>\n  &#8211; Socket Weld (SW): cho c\u1ee1 nh\u1ecf, \u00e1p cao, nh\u01b0ng c\u00f3 khe l\u01b0u ch\u1ea5t; h\u1ea1n ch\u1ebf trong sanitary.<br \/>\n  &#8211; Threaded (TH): cho c\u1ee1 nh\u1ecf, kh\u00f4ng h\u00e0n; \u00edt d\u00f9ng v\u1edbi Inox c\u00f4ng nghi\u1ec7p n\u1eb7ng.<br \/>\n  &#8211; Blind (BL): b\u1ecbt k\u00edn \u0111\u1ea7u \u1ed1ng\/thi\u1ebft b\u1ecb.<br \/>\n&#8211; Ti\u00eau chu\u1ea9n: ASME B16.5 (Class 150\/300\/600&#8230;), EN 1092-1 (PN10\/16\/25\/40). M\u1eb7t b\u00edch RF, FF, RTJ.<br \/>\n&#8211; Gio\u0103ng:<br \/>\n  &#8211; CNAF (\u0111\u1ec7m s\u1ee3i kh\u00f4ng ami\u0103ng) cho n\u01b0\u1edbc\/kh\u00ed chung.<br \/>\n  &#8211; PTFE\/Expanded PTFE cho h\u00f3a ch\u1ea5t, v\u1ec7 sinh.<br \/>\n  &#8211; Graphite t\u0103ng c\u01b0\u1eddng th\u00e9p cho nhi\u1ec7t cao\/\u00e1p cao.<br \/>\n  &#8211; Spiral wound gasket theo ASME B16.20 cho Class cao. Y\u00eau c\u1ea7u nh\u00e1m b\u1ec1 m\u1eb7t m\u1eb7t b\u00edch kho\u1ea3ng Ra 3.2\u20136.3 \u00b5m \u0111\u1ec3 l\u00e0m k\u00edn t\u1ed1i \u01b0u.<br \/>\n&#8211; Bulong\/\u0111ai \u1ed1c:<br \/>\n  &#8211; D\u00f9ng Inox A2-70\/A4-70 ho\u1eb7c ASTM A193 B8\/B8M; b\u00f4i tr\u01a1n ch\u1ed1ng k\u1eb9t (galling) b\u1eb1ng MoS2\/PTFE.<br \/>\n  &#8211; Tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a: n\u1ebfu gh\u00e9p v\u1edbi b\u00edch th\u00e9p carbon, xem x\u00e9t b\u1ed9 c\u00e1ch \u0111i\u1ec7n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Uu_nhuoc_diem_va_ung_dung-2\"><\/span>\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u01afu \u0111i\u1ec3m:<br \/>\n&#8211; Th\u00e1o l\u1eafp, thay th\u1ebf thi\u1ebft b\u1ecb, van, \u0111\u1ed3ng h\u1ed3 d\u1ec5 d\u00e0ng.<br \/>\n&#8211; Ch\u1ecbu \u00e1p\/ nhi\u1ec7t t\u1ed1t khi ch\u1ecdn \u0111\u00fang Class\/PN v\u00e0 gio\u0103ng ph\u00f9 h\u1ee3p.<\/p>\n<p>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<br \/>\n&#8211; Nhi\u1ec1u \u0111i\u1ec3m ti\u1ec1m \u1ea9n r\u00f2 (m\u1eb7t b\u00edch, gio\u0103ng, bulong) h\u01a1n h\u00e0n.<br \/>\n&#8211; C\u1ed3ng k\u1ec1nh, n\u1eb7ng, chi ph\u00ed v\u1eadt t\u01b0 cao h\u01a1n cho c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh so v\u1edbi h\u00e0n.<\/p>\n<p>\u1ee8ng d\u1ee5ng:<br \/>\n&#8211; K\u1ebft n\u1ed1i v\u00e0o b\u01a1m, heat exchanger, b\u00ecnh \u00e1p l\u1ef1c, van l\u1edbn.<br \/>\n&#8211; C\u1ea7n b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 ho\u1eb7c l\u00e0m s\u1ea1ch CIP\/SIP y\u00eau c\u1ea7u th\u00e1o m\u1edf.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quy_trinh_siet_bich_dung_ky_thuat\"><\/span>Quy tr\u00ecnh si\u1ebft b\u00edch \u0111\u00fang k\u1ef9 thu\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; C\u0103n th\u1eb3ng tr\u1ee5c \u1ed1ng, \u0111\u1ea3m b\u1ea3o song song m\u1eb7t b\u00edch; khe h\u1edf \u0111\u1ed3ng \u0111\u1ec1u.<br \/>\n&#8211; L\u1eafp gio\u0103ng \u0111\u00fang t\u00e2m, kh\u00f4ng d\u00e1n keo kh\u00f4ng ph\u00f9 h\u1ee3p; ki\u1ec3m tra b\u1ec1 m\u1eb7t s\u1ea1ch, kh\u00f4ng x\u01b0\u1edbc s\u00e2u.<br \/>\n&#8211; Si\u1ebft bulong theo h\u00ecnh sao (cross pattern), t\u0103ng d\u1ea7n theo 3 b\u01b0\u1edbc: 30% \u2013 60% \u2013 100% m\u00f4 men khuy\u1ebfn ngh\u1ecb c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t gio\u0103ng\/ti\u00eau chu\u1ea9n. Ki\u1ec3m tra l\u1ea1i sau 24 gi\u1edd n\u1ebfu c\u00f3 th\u1ec3.<br \/>\n&#8211; Th\u1eed k\u00edn \u00e1p sau l\u1eafp \u0111\u1eb7t; n\u1ebfu r\u00f2: ki\u1ec3m tra l\u1ea1i flatness, b\u1ec1 m\u1eb7t, ch\u1ecdn l\u1ea1i gio\u0103ng ho\u1eb7c t\u0103ng m\u00f4 men trong gi\u1edbi h\u1ea1n.<\/p>\n<h2 id=\"toc-4-so-sanh-nhanh-va-cach-chon-theo-yeu-cau\"><span class=\"ez-toc-section\" id=\"So_sanh_nhanh_va_cach_chon_theo_yeu_cau\"><\/span>So s\u00e1nh nhanh v\u00e0 c\u00e1ch ch\u1ecdn theo y\u00eau c\u1ea7u<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u0110\u01b0\u1eddng k\u00ednh:<br \/>\n  &#8211; NPS \u2264 2&#8243; (DN \u2264 50): ren kh\u1ea3 thi, nh\u01b0ng h\u00e0n t\u1ed1t h\u01a1n cho \u0111\u1ed9 k\u00edn\/v\u1ec7 sinh; b\u00edch d\u00f9ng khi c\u1ea7n th\u00e1o l\u1eafp.<br \/>\n  &#8211; NPS > 2&#8243;: \u01b0u ti\u00ean h\u00e0n ho\u1eb7c b\u00edch.<br \/>\n&#8211; \u00c1p su\u1ea5t\/nhi\u1ec7t \u0111\u1ed9:<br \/>\n  &#8211; Cao: h\u00e0n ho\u1eb7c b\u00edch Class cao. Tr\u00e1nh ren \u1edf \u00e1p\/nhi\u1ec7t cao.<br \/>\n&#8211; V\u1ec7 sinh\/qu\u00e1 tr\u00ecnh s\u1ea1ch:<br \/>\n  &#8211; Sanitary (F&#038;B, d\u01b0\u1ee3c, n\u01b0\u1edbc si\u00eau s\u1ea1ch): h\u00e0n TIG\/orbital v\u1edbi purge ki\u1ec3m so\u00e1t, m\u1ed1i h\u00e0n nh\u1eb5n trong; tr\u00e1nh ren; b\u00edch ch\u1ec9 t\u1ea1i thi\u1ebft b\u1ecb, d\u00f9ng gio\u0103ng PTFE.<br \/>\n&#8211; Rung \u0111\u1ed9ng\/gi\u00e3n n\u1edf nhi\u1ec7t:<br \/>\n  &#8211; H\u00e0n cho \u0111\u1ed9 c\u1ee9ng v\u1eefng; b\u00edch k\u1ebft h\u1ee3p kh\u1edbp gi\u00e3n n\u1edf. Ren k\u00e9m b\u1ec1n rung d\u00e0i h\u1ea1n.<br \/>\n&#8211; B\u1ea3o tr\u00ec\/th\u00e1o l\u1eafp:<br \/>\n  &#8211; C\u1ea7n th\u00e1o th\u01b0\u1eddng xuy\u00ean: b\u00edch.<br \/>\n  &#8211; C\u1ed1 \u0111\u1ecbnh l\u00e2u d\u00e0i: h\u00e0n.<br \/>\n&#8211; Chi ph\u00ed v\u00e0 ti\u1ebfn \u0111\u1ed9:<br \/>\n  &#8211; Ren: chi ph\u00ed th\u1ea5p, nhanh cho c\u1ee1 nh\u1ecf.<br \/>\n  &#8211; H\u00e0n: chi ph\u00ed nh\u00e2n c\u00f4ng cao h\u01a1n nh\u01b0ng t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi th\u1ea5p do \u00edt r\u00f2\/b\u1ea3o tr\u00ec.<br \/>\n  &#8211; B\u00edch: v\u1eadt t\u01b0 cao h\u01a1n, th\u1eddi gian l\u1eafp l\u00e2u h\u01a1n.<\/p>\n<h2 id=\"toc-5-vi-du-thuc-te-va-khuyen-nghi\"><span class=\"ez-toc-section\" id=\"Vi_du_thuc_te_va_khuyen_nghi\"><\/span>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Tuy\u1ebfn n\u01b0\u1edbc RO DN40, y\u00eau c\u1ea7u v\u1ec7 sinh, l\u01b0u l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh:<br \/>\n  &#8211; Ch\u1ecdn: H\u00e0n TIG v\u1edbi purge O2 < 50\u2013100 ppm, m\u1ed1i h\u00e0n th\u1ea5u, \u0111\u00e1nh b\u00f3ng trong v\u00f9ng h\u00e0n; ch\u1ec9 d\u00f9ng b\u00edch t\u1ea1i b\u01a1m v\u00e0 thi\u1ebft b\u1ecb l\u1ecdc, gio\u0103ng PTFE.\n- \u0110\u01b0\u1eddng kh\u00ed n\u00e9n nh\u00e0 x\u01b0\u1edfng DN25, \u00e1p 8 bar, c\u1ea7n m\u1edf r\u1ed9ng t\u01b0\u01a1ng lai:\n  - Ch\u1ecdn: N\u1ed1i ren chu\u1ea9n \u0111\u1ed3ng nh\u1ea5t (BSPT ho\u1eb7c NPT), b\u0103ng PTFE chu\u1ea9n; l\u1eafp quick coupling n\u01a1i thao t\u00e1c; tr\u00e1nh tr\u1ed9n ren.\n- \u0110\u01b0\u1eddng h\u01a1i b\u00e3o h\u00f2a DN80, 8\u201310 bar, nhi\u1ec7t ~ 180\u2013185\u00b0C:\n  - Ch\u1ecdn: H\u00e0n \u1ed1ng v\u00e0 ph\u1ee5 ki\u1ec7n; b\u00edch ASME Class 150 \u1edf van\/thi\u1ebft b\u1ecb; gio\u0103ng graphite gia c\u01b0\u1eddng; bulong B8M b\u00f4i tr\u01a1n ch\u1ed1ng k\u1eb9t.\n\n\n\n<h2 id=\"toc-6-vat-tu-va-cau-hinh-khuyen-nghi\"><span class=\"ez-toc-section\" id=\"Vat_tu_va_cau_hinh_khuyen_nghi\"><\/span>V\u1eadt t\u01b0 v\u00e0 c\u1ea5u h\u00ecnh khuy\u1ebfn ngh\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u1ed0ng:<br \/>\n  &#8211; ASTM A312 TP304\/304L cho n\u01b0\u1edbc, kh\u00f4ng \u0103n m\u00f2n m\u1ea1nh; TP316\/316L cho m\u00f4i tr\u01b0\u1eddng chloride\/h\u00f3a ch\u1ea5t nh\u1eb9. \u0110\u1ed9 d\u00e0y ph\u1ed5 bi\u1ebfn: SCH10 cho c\u00f4ng nghi\u1ec7p nh\u1eb9, SCH40 cho \u00e1p cao h\u01a1n.<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n h\u00e0n: ASTM A403 WP304L\/WP316L; ch\u1ecdn L-grade gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n m\u1ed1i h\u00e0n.<br \/>\n&#8211; B\u00edch: ASTM A182 F304\/F316; theo ASME B16.5 ho\u1eb7c EN 1092-1; ch\u1ecdn m\u1eb7t RF th\u00f4ng d\u1ee5ng.<br \/>\n&#8211; D\u00e2y\/que h\u00e0n: ER308L, ER316L; kh\u00ed Argon; c\u00f3 th\u1ec3 th\u00eam backing gas h\u1ed7n h\u1ee3p Ar+H2 2\u20135% cho m\u1eb7t trong s\u00e1ng h\u01a1n (kh\u00f4ng d\u00f9ng cho m\u1ecdi d\u1ecbch v\u1ee5, c\u00e2n nh\u1eafc an to\u00e0n).<br \/>\n&#8211; Gio\u0103ng: PTFE cho h\u00f3a ch\u1ea5t\/v\u1ec7 sinh; graphite cho nhi\u1ec7t cao; spiral wound cho \u00e1p\/nhi\u1ec7t cao; tu\u00e2n theo h\u01b0\u1edbng d\u1eabn nh\u00e0 s\u1ea3n xu\u1ea5t v\u1ec1 m\u00f4 men.<br \/>\n&#8211; Bulong\/\u0111ai \u1ed1c: A2-70\/A4-70 ho\u1eb7c B8\/B8M; d\u00f9ng h\u1ee3p ch\u1ea5t ch\u1ed1ng k\u1eb9t.<br \/>\n&#8211; Ch\u1ed1ng \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a: khi gh\u00e9p inox v\u1edbi th\u00e9p carbon, d\u00f9ng b\u1ed9 c\u00e1ch \u0111i\u1ec7n b\u00edch ho\u1eb7c gio\u0103ng c\u00e1ch \u0111i\u1ec7n.<\/p>\n<h2 id=\"toc-7-cac-loi-pho-bien-va-cach-tranh\"><span class=\"ez-toc-section\" id=\"Cac_loi_pho_bien_va_cach_tranh\"><\/span>C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; L\u1eabn l\u1ed9n ren BSPT v\u00e0 NPT: lu\u00f4n nh\u1eadn d\u1ea1ng chu\u1ea9n ren tr\u01b0\u1edbc khi mua ph\u1ee5 ki\u1ec7n.<br \/>\n&#8211; H\u00e0n kh\u00f4ng purge ho\u1eb7c purge k\u00e9m: g\u00e2y r\u1ed7, \u0103n m\u00f2n m\u1ed1i h\u00e0n; lu\u00f4n \u0111o O2 c\u00f2n l\u1ea1i b\u1eb1ng oxygen meter khi y\u00eau c\u1ea7u v\u1ec7 sinh.<br \/>\n&#8211; Si\u1ebft b\u00edch l\u1ec7ch\/kh\u00f4ng theo h\u00ecnh sao: bi\u1ebfn d\u1ea1ng gio\u0103ng, r\u00f2 r\u1ec9; tu\u00e2n th\u1ee7 quy tr\u00ecnh si\u1ebft nhi\u1ec1u b\u01b0\u1edbc.<br \/>\n&#8211; D\u00f9ng v\u1eadt li\u1ec7u kh\u00f4ng t\u01b0\u01a1ng th\u00edch h\u00f3a ch\u1ea5t\/nhi\u1ec7t: ki\u1ec3m tra SDS v\u00e0 bi\u1ec3u \u0111\u1ed3 t\u01b0\u01a1ng th\u00edch v\u1eadt li\u1ec7u tr\u01b0\u1edbc khi ch\u1ecdn gio\u0103ng v\u00e0 m\u00e1c Inox.<br \/>\n&#8211; Kh\u00f4ng x\u1eed l\u00fd b\u1ec1 m\u1eb7t sau h\u00e0n: t\u0103ng nguy c\u01a1 \u0103n m\u00f2n; \u00e1p d\u1ee5ng t\u1ea9y\/ th\u1ee5 \u0111\u1ed9ng theo ASTM A380\/A967.<\/p>\n<h2 id=\"toc-8-faq-nhanh\"><span class=\"ez-toc-section\" id=\"FAQ_nhanh\"><\/span>FAQ nhanh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Khi n\u00e0o n\u00ean \u01b0u ti\u00ean n\u1ed1i ren?<br \/>\n  &#8211; Khi DN \u2264 2&#8243;, \u00e1p th\u1ea5p, m\u00f4i tr\u01b0\u1eddng kh\u00f4ng v\u1ec7 sinh, c\u1ea7n l\u1eafp nhanh\/chi ph\u00ed th\u1ea5p.<br \/>\n&#8211; T\u1ea1i sao m\u1ed1i h\u00e0n Inox b\u1ecb \u0111\u1ed5i m\u00e0u v\u00e0ng xanh?<br \/>\n  &#8211; Do oxy h\u00f3a \u1edf nhi\u1ec7t cao; c\u1ea7n purge v\u00e0 b\u1ea3o v\u1ec7 kh\u00ed tr\u01a1 t\u1ed1t, sau \u0111\u00f3 t\u1ea9y-passivate \u0111\u1ec3 kh\u00f4i ph\u1ee5c l\u1edbp th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; B\u00edch Class 150 c\u00f3 \u0111\u1ee7 cho n\u01b0\u1edbc l\u1ea1nh?<br \/>\n  &#8211; Th\u01b0\u1eddng \u0111\u1ee7 cho h\u1ec7 n\u01b0\u1edbc l\u1ea1nh\/ngu\u1ed9i \u00e1p th\u1ea5p; ki\u1ec3m tra \u0111\u1ed3 th\u1ecb \u00e1p-nhi\u1ec7t nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 m\u00e3 thi\u1ebft k\u1ebf.<br \/>\n&#8211; C\u00f3 th\u1ec3 d\u00f9ng b\u0103ng PTFE cho m\u1ecdi ren Inox?<br \/>\n  &#8211; Ph\u1ed5 bi\u1ebfn v\u00e0 hi\u1ec7u qu\u1ea3, nh\u01b0ng v\u1edbi rung \u0111\u1ed9ng\/ nhi\u1ec7t cao, c\u00e2n nh\u1eafc keo ren chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb b\u1edfi nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n<h2 id=\"toc-9-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; ASME B16.5 \u2013 Pipe Flanges and Flanged Fittings: https:\/\/www.asme.org<br \/>\n&#8211; EN 1092-1 \u2013 Flanges and their joints: https:\/\/standards.iteh.ai<br \/>\n&#8211; ASME B1.20.1 \u2013 Pipe Threads, General Purpose (NPT): https:\/\/www.asme.org<br \/>\n&#8211; ISO 7-1 \u2013 Pipe threads where pressure-tight joints are made on the threads: https:\/\/www.iso.org<br \/>\n&#8211; ASTM A312 \u2013 Seamless and Welded Austenitic Stainless Steel Pipes: https:\/\/www.astm.org<br \/>\n&#8211; ASTM A403 \u2013 Wrought Austenitic Stainless Steel Piping Fittings: https:\/\/www.astm.org<br \/>\n&#8211; ASTM A182 \u2013 Forged or Rolled Alloy-Stainless Pipe Flanges: https:\/\/www.astm.org<br \/>\n&#8211; AWS D1.6 \/ ASME Section IX \u2013 Welding of Stainless Steel: https:\/\/www.aws.org<br \/>\n&#8211; ASTM A380\/A967 \u2013 Cleaning, Descaling, and Passivation of Stainless Steel: https:\/\/www.astm.org<br \/>\n&#8211; Nickel Institute \u2013 Welding Stainless Steels: https:\/\/www.nickelinstitute.org<br \/>\n&#8211; ASME B16.20 \u2013 Metallic Gaskets for Pipe Flanges: https:\/\/www.asme.org<br \/>\n&#8211; ISO 4144 \u2013 Stainless steel fittings threaded: https:\/\/www.iso.org<\/p>\n<h2 id=\"toc-10-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>&#8211; H\u00e0n cho \u0111\u1ed9 k\u00edn, b\u1ec1n, v\u1ec7 sinh v\u00e0 tu\u1ed5i th\u1ecd cao nh\u1ea5t, ph\u00f9 h\u1ee3p \u0111a s\u1ed1 tuy\u1ebfn \u1ed1ng c\u00f4ng nghi\u1ec7p v\u00e0 sanitary.<br \/>\n&#8211; N\u1ed1i ren nhanh, r\u1ebb cho c\u1ee1 nh\u1ecf v\u00e0 \u00e1p th\u1ea5p, nh\u01b0ng h\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 k\u00edn v\u00e0 v\u1ec7 sinh.<br \/>\n&#8211; N\u1ed1i b\u00edch t\u1ed1i \u01b0u khi c\u1ea7n th\u00e1o l\u1eafp\/b\u1ea3o tr\u00ec ho\u1eb7c k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb, \u0111\u00e1p \u1ee9ng t\u1ed1t \u00e1p\/nhi\u1ec7t khi ch\u1ecdn \u0111\u00fang Class\/PN v\u00e0 gio\u0103ng.<\/p>\n<p>C\u00e1ch ch\u1ecdn th\u1ef1c t\u1ebf: c\u1ee1 \u1ed1ng, \u00e1p\/nhi\u1ec7t, y\u00eau c\u1ea7u v\u1ec7 sinh, b\u1ea3o tr\u00ec v\u00e0 t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi. N\u1ebfu v\u1eabn ph\u00e2n v\u00e2n, h\u00e3y m\u00f4 t\u1ea3 \u1ee9ng d\u1ee5ng, m\u00f4i ch\u1ea5t, \u00e1p su\u1ea5t, nhi\u1ec7t \u0111\u1ed9, k\u00edch th\u01b0\u1edbc v\u00e0 y\u00eau c\u1ea7u v\u1ec7 sinh \u0111\u1ec3 ch\u00fang t\u00f4i t\u01b0 v\u1ea5n c\u1ea5u h\u00ecnh t\u1ed1i \u01b0u.<\/p>\n<p>Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n chi ti\u1ebft 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 ch\u1ecdn c\u00e1ch n\u1ed1i \u1ed1ng Inox: h\u00e0n, n\u1ed1i ren hay n\u1ed1i b\u00edch. So s\u00e1nh \u01b0u nh\u01b0\u1ee3c, ti\u00eau chu\u1ea9n, quy tr\u00ecnh l\u1eafp \u0111\u1eb7t, ch\u1ed1ng r\u00f2 v\u00e0 khuy\u1ebfn ngh\u1ecb v\u1eadt t\u01b0.<\/p>\n","protected":false},"author":7,"featured_media":1067,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2618","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\/2618","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=2618"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2618\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1067"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}