{"id":2627,"date":"2026-09-28T12:33:48","date_gmt":"2026-09-28T05:33:48","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/"},"modified":"2026-09-28T12:33:48","modified_gmt":"2026-09-28T05:33:48","slug":"uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/","title":{"rendered":"U\u1ed1n \u1ed1ng v\u00e0 h\u1ed9p inox kh\u00f4ng b\u1ecb m\u00f3p: k\u1ef9 thu\u1eadt, b\u00e1n k\u00ednh, khu\u00f4n"},"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;2627&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;U\u1ed1n \u1ed1ng v\u00e0 h\u1ed9p inox kh\u00f4ng b\u1ecb m\u00f3p: k\u1ef9 thu\u1eadt, b\u00e1n k\u00ednh, khu\u00f4n&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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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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Cac_yeu_to_vat_lieu_chi_phoi_kha_nang_uon\" >C\u00e1c y\u1ebfu t\u1ed1 v\u1eadt li\u1ec7u chi ph\u1ed1i kh\u1ea3 n\u0103ng u\u1ed1n<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Chon_phuong_phap_uon_dung_theo_yeu_cau_san_pham\" >Ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n \u0111\u00fang theo y\u00eau c\u1ea7u s\u1ea3n ph\u1ea9m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Thiet_ke_ban_kinh_uon_CLR_va_gioi_han_khuyen_nghi\" >Thi\u1ebft k\u1ebf b\u00e1n k\u00ednh u\u1ed1n (CLR) v\u00e0 gi\u1edbi h\u1ea1n 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-5\" href=\"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Khuon_va_phu_tro_mandrel_wiper_clamp_%E2%80%93_cach_chon_va_set_up\" >Khu\u00f4n v\u00e0 ph\u1ee5 tr\u1ee3: mandrel, wiper, clamp \u2013 c\u00e1ch ch\u1ecdn v\u00e0 set up<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Mandrel_ruot_gabi\" >Mandrel (ru\u1ed9t g\u00e0\/bi)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Wiper_die_dao_gat_nhan\" >Wiper die (dao g\u1ea1t nh\u0103n)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Clamp_die_Pressure_die\" >Clamp die &#038; Pressure die<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Vat_lieu_khuon_boi_tron\" >V\u1eadt li\u1ec7u khu\u00f4n &#038; b\u00f4i tr\u01a1n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Thong_so_may_then_chot_de_khong_bi_mop_nhan_xuoc\" >Th\u00f4ng s\u1ed1 m\u00e1y then ch\u1ed1t \u0111\u1ec3 kh\u00f4ng b\u1ecb m\u00f3p, nh\u0103n, x\u01b0\u1edbc<\/a><\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Ky_thuat_rieng_cho_hop_inox_vuongchu_nhat\" >K\u1ef9 thu\u1eadt ri\u00eang cho h\u1ed9p inox (vu\u00f4ng\/ch\u1eef nh\u1eadt)<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Meo_uon_thu_congkhong_mandrel_cho_xuong_nho\" >M\u1eb9o u\u1ed1n th\u1ee7 c\u00f4ng\/kh\u00f4ng mandrel cho x\u01b0\u1edfng nh\u1ecf<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Kiem_soat_chat_luong_sau_uon\" >Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng sau u\u1ed1n<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Bang_loi_thuong_gap_va_cach_khac_phuc_nhanh\" >B\u1ea3ng l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c nhanh<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Vi_du_thiet_lap_thuc_te_case_study_ngan\" >V\u00ed d\u1ee5 thi\u1ebft l\u1eadp th\u1ef1c t\u1ebf (case study ng\u1eafn)<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Goi_y_lua_chon_vat_lieu_de_de_uon_va_ben_ngoai_troi\" >G\u1ee3i \u00fd l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111\u1ec3 d\u1ec5 u\u1ed1n v\u00e0 b\u1ec1n ngo\u00e0i tr\u1eddi<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#Nguon_tham_khao\" >Ngu\u1ed3n tham kh\u1ea3o<\/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\/uon-ong-va-hop-inox-khong-bi-mop-ky-thuat-ban-kinh-khuon\/#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-cac-yeu-to-vat-lieu-chi-phoi-kha-nang-uon\">C\u00e1c y\u1ebfu t\u1ed1 v\u1eadt li\u1ec7u chi ph\u1ed1i kh\u1ea3 n\u0103ng u\u1ed1n<\/a><\/li>\n<li><a href=\"#toc-1-chon-phuong-phap-uon-dung-theo-yeu-cau-san-pham\">Ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n \u0111\u00fang theo y\u00eau c\u1ea7u s\u1ea3n ph\u1ea9m<\/a><\/li>\n<li><a href=\"#toc-2-thiet-ke-ban-kinh-uon-clr-va-gioi-han-khuyen-nghi\">Thi\u1ebft k\u1ebf b\u00e1n k\u00ednh u\u1ed1n (CLR) v\u00e0 gi\u1edbi h\u1ea1n khuy\u1ebfn ngh\u1ecb<\/a><\/li>\n<li><a href=\"#toc-3-khuon-va-phu-tro-mandrel-wiper-clamp-cach-chon-va-\">Khu\u00f4n v\u00e0 ph\u1ee5 tr\u1ee3: mandrel, wiper, clamp \u2013 c\u00e1ch ch\u1ecdn v\u00e0 set up<\/a><\/li>\n<li><a href=\"#toc-4-thong-so-may-then-chot-de-khong-bi-mop-nhan-xuoc\">Th\u00f4ng s\u1ed1 m\u00e1y then ch\u1ed1t \u0111\u1ec3 kh\u00f4ng b\u1ecb m\u00f3p, nh\u0103n, x\u01b0\u1edbc<\/a><\/li>\n<li><a href=\"#toc-5-ky-thuat-rieng-cho-hop-inox-vuongchu-nhat\">K\u1ef9 thu\u1eadt ri\u00eang cho h\u1ed9p inox (vu\u00f4ng\/ch\u1eef nh\u1eadt)<\/a><\/li>\n<li><a href=\"#toc-6-meo-uon-thu-congkhong-mandrel-cho-xuong-nho\">M\u1eb9o u\u1ed1n th\u1ee7 c\u00f4ng\/kh\u00f4ng mandrel cho x\u01b0\u1edfng nh\u1ecf<\/a><\/li>\n<li><a href=\"#toc-7-kiem-soat-chat-luong-sau-uon\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng sau u\u1ed1n<\/a><\/li>\n<li><a href=\"#toc-8-bang-loi-thuong-gap-va-cach-khac-phuc-nhanh\">B\u1ea3ng l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c nhanh<\/a><\/li>\n<li><a href=\"#toc-9-vi-du-thiet-lap-thuc-te-case-study-ngan\">V\u00ed d\u1ee5 thi\u1ebft l\u1eadp th\u1ef1c t\u1ebf (case study ng\u1eafn)<\/a><\/li>\n<li><a href=\"#toc-10-goi-y-lua-chon-vat-lieu-de-de-uon-va-ben-ngoai-tro\">G\u1ee3i \u00fd l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111\u1ec3 d\u1ec5 u\u1ed1n v\u00e0 b\u1ec1n ngo\u00e0i tr\u1eddi<\/a><\/li>\n<li><a href=\"#toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>U\u1ed1n \u1ed1ng v\u00e0 h\u1ed9p inox kh\u00f4ng b\u1ecb m\u00f3p, b\u1eb9p hay n\u1ee9t l\u00e0 y\u00eau c\u1ea7u c\u1ed1t l\u00f5i trong gia c\u00f4ng c\u01a1 kh\u00ed, n\u1ed9i ngo\u1ea1i th\u1ea5t, \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 k\u1ebft c\u1ea5u. B\u00e0i vi\u1ebft n\u00e0y \u0111i th\u1eb3ng v\u00e0o k\u1ef9 thu\u1eadt u\u1ed1n \u0111\u00fang: ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p, t\u00ednh b\u00e1n k\u00ednh, b\u1ed1 tr\u00ed \u0111\u01b0\u1eddng h\u00e0n, khu\u00f4n \u2013 mandrel \u2013 wiper, th\u00f4ng s\u1ed1 m\u00e1y, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 m\u1eb9o kh\u1eafc ph\u1ee5c l\u1ed7i. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ea3nh gh\u00e9p quan tr\u1ecdng trong c\u1ea9m nang \u1ed0ng\/H\u1ed9p Inox v\u1ec1 ti\u00eau chu\u1ea9n v\u00e0 \u1ee9ng d\u1ee5ng, nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp \u0111\u1ec3 b\u1ea1n \u00e1p d\u1ee5ng ngay t\u1ea1i x\u01b0\u1edfng.<\/p>\n<h2 id=\"toc-0-cac-yeu-to-vat-lieu-chi-phoi-kha-nang-uon\"><span class=\"ez-toc-section\" id=\"Cac_yeu_to_vat_lieu_chi_phoi_kha_nang_uon\"><\/span>C\u00e1c y\u1ebfu t\u1ed1 v\u1eadt li\u1ec7u chi ph\u1ed1i kh\u1ea3 n\u0103ng u\u1ed1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u00e1c inox v\u00e0 \u0111\u1ed9 b\u1ec1n: Inox austenitic 304\/304L\/316 d\u1ec5 u\u1ed1n h\u01a1n 201 (201 c\u00f3 gi\u1edbi h\u1ea1n ch\u1ea3y cao h\u01a1n, d\u1ec5 h\u1ed3i xu\u00e2n v\u00e0 nh\u0103n m\u1eb7t trong h\u01a1n). Tr\u1ea1ng th\u00e1i c\u1ee9ng c\u00e1n ngu\u1ed9i (1\/2H, 3\/4H) u\u1ed1n kh\u00f3 h\u01a1n tr\u1ea1ng th\u00e1i \u1ee7 m\u1ec1m (annealed).<br \/>\n&#8211; T\u1ef7 s\u1ed1 D\/t (v\u1edbi \u1ed1ng tr\u00f2n): D l\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i, t l\u00e0 chi\u1ec1u d\u00e0y. D\/t c\u00e0ng l\u1edbn (\u1ed1ng c\u00e0ng m\u1ecfng) c\u00e0ng d\u1ec5 m\u00f3p\/oval. Ng\u01b0\u1ee1ng D\/t > 20 n\u00ean u\u1ed1n c\u00f3 mandrel v\u00e0 wiper.<br \/>\n&#8211; H\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt: Th\u00e0nh ph\u1eb3ng d\u1ec5 b\u1eb9p v\u00e0 nh\u0103n \u1edf b\u00e1n k\u00ednh nh\u1ecf. Th\u00e0nh m\u1ecfng (t < 1.2 mm) c\u00e0ng c\u1ea7n d\u1ee5ng c\u1ee5 h\u1ed7 tr\u1ee3.\n- \u0110\u01b0\u1eddng h\u00e0n d\u1ecdc: Khi u\u1ed1n, \u0111\u1eb7t m\u1ed1i h\u00e0n \u1edf tr\u1ee5c trung h\u00f2a (hai b\u00ean h\u00f4ng \u1ed1ng, v\u1ecb tr\u00ed 3 gi\u1edd ho\u1eb7c 9 gi\u1edd) \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 n\u1ee9t ho\u1eb7c d\u1ed3n bi\u1ebfn d\u1ea1ng \u1edf m\u1eb7t k\u00e9o\/n\u00e9n.\n- B\u1ec1 m\u1eb7t v\u00e0 ma s\u00e1t: Inox d\u1ec5 \u201c\u0103n d\u00ednh\u201d (galling). Khu\u00f4n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng\/\u0111\u01b0\u1ee3c ph\u1ee7 (Cr c\u1ee9ng, TiN, Ni\u2013PTFE) v\u00e0 b\u00f4i tr\u01a1n ph\u00f9 h\u1ee3p cho inox.\n\nNgu\u1ed3n tham kh\u1ea3o: ASTM A554 (\u1ed1ng\/h\u1ed9p inox c\u01a1 kh\u00ed, y\u00eau c\u1ea7u ch\u1ebf t\u1ea1o v\u00e0 th\u1eed nghi\u1ec7m), ASTM A312 (\u1ed1ng c\u00f4ng nghi\u1ec7p \u00e1p l\u1ef1c) \u2013 astm.org.\n\n\n\n<h2 id=\"toc-1-chon-phuong-phap-uon-dung-theo-yeu-cau-san-pham\"><span class=\"ez-toc-section\" id=\"Chon_phuong_phap_uon_dung_theo_yeu_cau_san_pham\"><\/span>Ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n \u0111\u00fang theo y\u00eau c\u1ea7u s\u1ea3n ph\u1ea9m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; U\u1ed1n k\u00e9o khu\u00f4n (Rotary Draw Bending, c\u00f3\/kh\u00f4ng c\u00f3 mandrel): Ch\u00ednh x\u00e1c, b\u00e1n k\u00ednh nh\u1ecf, h\u00ecnh d\u00e1ng \u1ed5n \u0111\u1ecbnh. B\u1eaft bu\u1ed9c cho lan can, \u0111\u1ed3 n\u1ed9i th\u1ea5t, chi ti\u1ebft trang tr\u00ed c\u1ea7n th\u1ea9m m\u1ef9. V\u1edbi \u1ed1ng m\u1ecfng\/h\u1ed9p n\u00ean d\u00f9ng mandrel + wiper.<br \/>\n&#8211; U\u1ed1n l\u1ed1c 3 tr\u1ee5c (Roll Bending): Cho b\u00e1n k\u00ednh l\u1edbn, v\u00f2ng cung d\u00e0i, bi\u1ebfn d\u1ea1ng \u00edt tr\u00ean ti\u1ebft di\u1ec7n nh\u01b0ng kh\u00f4ng ph\u00f9 h\u1ee3p b\u00e1n k\u00ednh nh\u1ecf.<br \/>\n&#8211; U\u1ed1n ch\u00e8n\/\u00e9p (Press\/Compression Bending): Nhanh, khu\u00f4n \u0111\u01a1n gi\u1ea3n; r\u1ee7i ro oval\/nh\u0103n cao v\u1edbi inox m\u1ecfng, ch\u1ec9 d\u00f9ng cho b\u00e1n k\u00ednh l\u1edbn v\u00e0 y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t kh\u00f4ng qu\u00e1 kh\u1eaft khe.<br \/>\n&#8211; U\u1ed1n c\u1ea3m \u1ee9ng (Induction Bending): Cho \u1ed1ng d\u00e0y\/k\u00edch th\u01b0\u1edbc l\u1edbn, b\u00e1n k\u00ednh trung b\u00ecnh\u2013l\u1edbn, \u0111\u1ed9 ch\u00ednh x\u00e1c cao; \u00edt \u00e1p d\u1ee5ng cho \u1ed1ng\/h\u1ed9p m\u1ecfng trang tr\u00ed.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: The Fabricator\/The Tube &#038; Pipe Journal \u2013 What you need to know about tube bending; Bend Tooling Inc. knowledge base.<\/p>\n<h2 id=\"toc-2-thiet-ke-ban-kinh-uon-clr-va-gioi-han-khuyen-nghi\"><span class=\"ez-toc-section\" id=\"Thiet_ke_ban_kinh_uon_CLR_va_gioi_han_khuyen_nghi\"><\/span>Thi\u1ebft k\u1ebf b\u00e1n k\u00ednh u\u1ed1n (CLR) v\u00e0 gi\u1edbi h\u1ea1n khuy\u1ebfn ngh\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u0110\u1ecbnh ngh\u0129a: CLR (Centerline Radius) l\u00e0 b\u00e1n k\u00ednh t\u00ednh theo \u0111\u01b0\u1eddng t\u00e2m \u1ed1ng\/h\u1ed9p. D\u00f9ng CLR\/D \u0111\u1ec3 so s\u00e1nh.<br \/>\n&#8211; \u1ed0ng tr\u00f2n inox:<br \/>\n  + Kh\u00f4ng mandrel: CLR \u2265 2.5D\u20133D \u0111\u1ec3 h\u1ea1n ch\u1ebf oval\/m\u00f3p.<br \/>\n  + C\u00f3 mandrel + wiper: CLR c\u00f3 th\u1ec3 \u0111\u1ebfn ~1.0D\u20131.5D t\u00f9y D\/t, ch\u1ea5t l\u01b0\u1ee3ng \u1ed1ng v\u00e0 d\u1ee5ng c\u1ee5.<br \/>\n&#8211; H\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt:<br \/>\n  + V\u1edbi mandrel \u0111\u1ecbnh h\u00ecnh (square\/rectangular mandrel) + wiper: CLR khuy\u1ebfn ngh\u1ecb \u2265 1.5 l\u1ea7n c\u1ea1nh l\u1edbn (v\u1edbi h\u1ed9p ch\u1eef nh\u1eadt) ho\u1eb7c \u2265 1.5\u20132.0 l\u1ea7n c\u1ea1nh (v\u1edbi h\u1ed9p vu\u00f4ng) cho th\u00e0nh m\u1ecfng 0.8\u20131.2 mm. Th\u00e0nh d\u00e0y c\u00f3 th\u1ec3 gi\u1ea3m xu\u1ed1ng ~1.0\u20131.5 l\u1ea7n.<br \/>\n  + Kh\u00f4ng mandrel: n\u00ean ch\u1ecdn CLR \u2265 2.5\u20133.0 l\u1ea7n c\u1ea1nh l\u1edbn, v\u00e0 ch\u1ea5p nh\u1eadn m\u1ed9t \u00edt l\u00f5m th\u00e0nh (concavity).<br \/>\n&#8211; Gi\u1edbi h\u1ea1n bi\u1ebfn d\u1ea1ng:<br \/>\n  + \u0110\u1ed9 oval (\u1ed1ng tr\u00f2n) m\u1ee5c ti\u00eau < 8\u201310%: Ovality = (ODmax \u2212 ODmin)\/ODnom \u00d7 100%.\n  + M\u1ecfng th\u00e0nh m\u1eb7t ngo\u00e0i (thinning) m\u1ee5c ti\u00eau < 10\u201312%: Thinning% = (t0 \u2212 t)\/t0 \u00d7 100%.\n\nL\u01b0u \u00fd: C\u00e1c con s\u1ed1 tr\u00ean l\u00e0 th\u1ef1c h\u00e0nh c\u00f4ng nghi\u1ec7p, bi\u1ebfn thi\u00ean theo D\/t, ch\u1ea5t li\u1ec7u, khu\u00f4n v\u00e0 tay ngh\u1ec1. H\u00e3y ch\u1ea1y th\u1eed v\u00e0 \u0111o th\u1ef1c t\u1ebf \u0111\u1ec3 \u201ckh\u00f3a\u201d th\u00f4ng s\u1ed1 cho t\u1eebng m\u00e3 h\u00e0ng.\n\n\n\n<h2 id=\"toc-3-khuon-va-phu-tro-mandrel-wiper-clamp-cach-chon-va-\"><span class=\"ez-toc-section\" id=\"Khuon_va_phu_tro_mandrel_wiper_clamp_%E2%80%93_cach_chon_va_set_up\"><\/span>Khu\u00f4n v\u00e0 ph\u1ee5 tr\u1ee3: mandrel, wiper, clamp \u2013 c\u00e1ch ch\u1ecdn v\u00e0 set up<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Mandrel_ruot_gabi\"><\/span>Mandrel (ru\u1ed9t g\u00e0\/bi)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Lo\u1ea1i: plug (\u0111\u1eb7c), ball (m\u1ed9t bi), multi-ball (nhi\u1ec1u bi kh\u1edbp), form mandrel cho h\u1ed9p.<br \/>\n&#8211; Khi d\u00f9ng: D\/t > 15\u201320; b\u00e1n k\u00ednh nh\u1ecf (CLR \u2264 2D); b\u1ec1 m\u1eb7t y\u00eau c\u1ea7u \u0111\u1eb9p.<br \/>\n&#8211; C\u0103n ch\u1ec9nh: M\u0169i mandrel n\u1eb1m ngay sau \u0111\u01b0\u1eddng ti\u1ebfp tuy\u1ebfn u\u1ed1n ~0.5\u20131.0 mm (\u0111\u1ee7 \u0111\u1ee1 m\u1eb7t trong, kh\u00f4ng \u0111\u1ed9i b\u1ec1 m\u1eb7t). V\u1edbi h\u1ed9p, mandrel n\u00ean \u201c\u00f4m\u201d \u0111\u01b0\u1ee3c bi\u00ean d\u1ea1ng trong, ph\u1ea7n g\u00f3c luy\u1ec7n tr\u00f2n m\u01b0\u1ee3t \u0111\u1ec3 ch\u1ed1ng nh\u0103n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Wiper_die_dao_gat_nhan\"><\/span>Wiper die (dao g\u1ea1t nh\u0103n)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Ch\u1ee9c n\u0103ng: tri\u1ec7t nh\u0103n \u1edf m\u1eb7t trong b\u00e1n k\u00ednh.<br \/>\n&#8211; C\u00e0i \u0111\u1eb7t: M\u00e9p wiper \u201cb\u1eaft\u201d s\u00e1t \u0111\u01b0\u1eddng ti\u1ebfp tuy\u1ebfn, g\u00f3c d\u01b0\u01a1ng nh\u1eb9 \u0111\u1ec3 \u00e9p ph\u00f4i b\u00e1m khu\u00f4n; n\u1ebfu \u0111\u1ec3 l\u00f9i\/qu\u00e1 s\u00e2u \u0111\u1ec1u g\u00e2y v\u1ec7t c\u00e0o ho\u1eb7c nh\u0103n ki\u1ec3u s\u00f3ng nh\u1ecf.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Clamp_die_Pressure_die\"><\/span>Clamp die &#038; Pressure die<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Chi\u1ec1u d\u00e0i k\u1eb9p: th\u01b0\u1eddng \u2265 2.5\u20133.0 \u00d7 D (\u1ed1ng tr\u00f2n) ho\u1eb7c \u2265 2.0\u20132.5 \u00d7 c\u1ea1nh (h\u1ed9p) \u0111\u1ec3 ch\u1ed1ng tr\u01b0\u1ee3t.<br \/>\n&#8211; \u00c1p l\u1ef1c k\u1eb9p: \u0111\u1ee7 gi\u1eef nh\u01b0ng kh\u00f4ng l\u00e0m h\u1eb1n \u2013 k\u1ebft h\u1ee3p b\u1ec1 m\u1eb7t khu\u00f4n nh\u1eb5n v\u00e0 b\u00f4i tr\u01a1n t\u1ed1t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Vat_lieu_khuon_boi_tron\"><\/span>V\u1eadt li\u1ec7u khu\u00f4n &#038; b\u00f4i tr\u01a1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Khu\u00f4n: th\u00e9p d\u1ee5ng c\u1ee5 t\u00f4i c\u1ee9ng\/\u0111\u1eafp crom c\u1ee9ng ho\u1eb7c ph\u1ee7 PVD (TiN\/TiCN) \u0111\u1ec3 ch\u1ed1ng d\u00ednh inox.<br \/>\n&#8211; D\u1ea7u u\u1ed1n: ch\u1ecdn lo\u1ea1i EP cho inox, \u0111\u1ed9 nh\u1edbt cao, ph\u1ee5 gia ch\u1ed1ng h\u00e0n d\u00ednh; b\u00f4i \u0111\u1ec1u tr\u00ean clamp, pressure, wiper v\u00e0 mandrel. Tr\u00e1nh d\u1ea7u clo h\u00f3a n\u1ebfu quy \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng\/ATVSL\u0110 kh\u00f4ng cho ph\u00e9p.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: Bend Tooling Inc.; The Fabricator \u2013 How to build a quality mandrel bend.<\/p>\n<h2 id=\"toc-4-thong-so-may-then-chot-de-khong-bi-mop-nhan-xuoc\"><span class=\"ez-toc-section\" id=\"Thong_so_may_then_chot_de_khong_bi_mop_nhan_xuoc\"><\/span>Th\u00f4ng s\u1ed1 m\u00e1y then ch\u1ed1t \u0111\u1ec3 kh\u00f4ng b\u1ecb m\u00f3p, nh\u0103n, x\u01b0\u1edbc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Boost (\u0111\u1ea9y ph\u00f4i): 20\u201360% t\u00f9y D\/t v\u00e0 b\u00e1n k\u00ednh. T\u0103ng boost gi\u00fap gi\u1ea3m m\u1ecfng th\u00e0nh ngo\u00e0i v\u00e0 nh\u0103n trong, nh\u01b0ng qu\u00e1 cao g\u00e2y g\u1ee3n\/g\u00e3y s\u00f3ng \u2013 h\u00e3y t\u0103ng d\u1ea7n v\u00e0 theo d\u00f5i b\u1ec1 m\u1eb7t.<br \/>\n&#8211; T\u1ed1c \u0111\u1ed9 u\u1ed1n: 8\u201325\u00b0\/s v\u1edbi \u1ed1ng m\u1ecfng \u0111\u1ec3 d\u1ea7u k\u1ecbp l\u00e0m vi\u1ec7c v\u00e0 v\u1eadt li\u1ec7u \u201cch\u1ea3y\u201d \u0111\u1ec1u; u\u1ed1n qu\u00e1 nhanh d\u1ec5 nh\u0103n\/x\u01b0\u1edbc.<br \/>\n&#8211; H\u1ed3i xu\u00e2n (springback) v\u00e0 b\u00f9 g\u00f3c: Inox austenitic th\u01b0\u1eddng h\u1ed3i 2\u20136\u00b0 t\u00f9y m\u00e1c v\u00e0 b\u00e1n k\u00ednh. L\u1eadp chart b\u00f9 g\u00f3c theo t\u1eebng m\u00e3 ph\u00f4i (v\u00ed d\u1ee5 304L t1.2 th\u01b0\u1eddng b\u00f9 ~3\u20134\u00b0 \u1edf CLR 1.5D).<br \/>\n&#8211; Tr\u00ecnh t\u1ef1: k\u1eb9p ch\u1eb7t \u2192 k\u00e9o u\u1ed1n k\u00e8m boost \u2192 gi\u1eef \u00e1p cu\u1ed1i g\u00f3c trong 1\u20132 gi\u00e2y \u2192 nh\u1ea3 ch\u1eadm \u0111\u1ec3 tr\u00e1nh b\u1eadt ng\u01b0\u1ee3c.<br \/>\n&#8211; L\u00e0m s\u1ea1ch\/l\u1ecdc d\u1ea7u tu\u1ea7n ho\u00e0n: gi\u1ea3m x\u01b0\u1edbc v\u00e0 v\u1ec7t \u0111en tr\u00ean b\u1ec1 m\u1eb7t b\u00f3ng g\u01b0\u01a1ng.<\/p>\n<h2 id=\"toc-5-ky-thuat-rieng-cho-hop-inox-vuongchu-nhat\"><span class=\"ez-toc-section\" id=\"Ky_thuat_rieng_cho_hop_inox_vuongchu_nhat\"><\/span>K\u1ef9 thu\u1eadt ri\u00eang cho h\u1ed9p inox (vu\u00f4ng\/ch\u1eef nh\u1eadt)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; D\u00f9ng mandrel \u0111\u1ecbnh h\u00ecnh to\u00e0n ti\u1ebft di\u1ec7n, \u01b0u ti\u00ean lo\u1ea1i nhi\u1ec1u bi c\u00f3 g\u00f3c bo ph\u00f9 h\u1ee3p b\u00e1n k\u00ednh trong c\u1ee7a h\u1ed9p.<br \/>\n&#8211; Wiper m\u1eb7t ph\u1eb3ng, m\u00e9p m\u01b0\u1ee3n g\u00f3c bo nh\u1ecf; xi\u1ebft \u00e1p l\u1ef1c \u0111\u1ec1u \u0111\u1ec3 x\u00f3a n\u1ebfp s\u00f3ng s\u1edbm.<br \/>\n&#8211; Gia c\u01b0\u1eddng ch\u1ed1ng l\u00f5m: c\u00f3 th\u1ec3 ch\u00e8n g\u1ed7\/PU \u0111\u1ecbnh h\u00ecnh \u1edf th\u00e0nh \u0111\u1ed1i di\u1ec7n khi u\u1ed1n ch\u00e8n; v\u1edbi u\u1ed1n k\u00e9o d\u00f9ng pressure die d\u00e0i h\u01a1n v\u00e0 boost cao h\u01a1n so v\u1edbi \u1ed1ng tr\u00f2n.<br \/>\n&#8211; B\u00e1n k\u00ednh nh\u1ecf: ch\u1ecdn h\u1ed9p c\u00f3 g\u00f3c bo s\u1eb5n l\u1edbn h\u01a1n (radius corner) s\u1ebd \u00edt nh\u0103n h\u01a1n h\u1ed9p \u201cg\u00f3c vu\u00f4ng s\u1eafc\u201d.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t l\u00f5m th\u00e0nh (concavity): ch\u1ea5p nh\u1eadn trong gi\u1edbi h\u1ea1n th\u1ea9m m\u1ef9 n\u1ebfu kh\u00f4ng c\u00f3 mandrel; v\u1edbi trang tr\u00ed cao c\u1ea5p, lu\u00f4n d\u00f9ng mandrel + wiper.<\/p>\n<h2 id=\"toc-6-meo-uon-thu-congkhong-mandrel-cho-xuong-nho\"><span class=\"ez-toc-section\" id=\"Meo_uon_thu_congkhong_mandrel_cho_xuong_nho\"><\/span>M\u1eb9o u\u1ed1n th\u1ee7 c\u00f4ng\/kh\u00f4ng mandrel cho x\u01b0\u1edfng nh\u1ecf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ch\u1ecdn b\u00e1n k\u00ednh l\u1edbn h\u01a1n (\u2265 3D v\u1edbi \u1ed1ng; \u2265 3\u00d7 c\u1ea1nh l\u1edbn v\u1edbi h\u1ed9p).<br \/>\n&#8211; Nh\u1ed3i c\u00e1t kh\u00f4 \u0111\u00e3 s\u1ea5y k\u1ef9, \u0111\u1ea7m ch\u1eb7t; b\u1ecbt k\u00edn hai \u0111\u1ea7u b\u1eb1ng n\u00fat ren ho\u1eb7c h\u00e0n t\u1ea1m, l\u1ed7 tho\u00e1t kh\u00ed nh\u1ecf. K\u1ef9 thu\u1eadt n\u00e0y gi\u1ea3m oval v\u00e0 nh\u0103n \u0111\u00e1ng k\u1ec3.<br \/>\n&#8211; Kh\u00f4ng khuy\u1ebfn ngh\u1ecb nung c\u1ee5c b\u1ed9 inox austenitic \u0111\u1ec3 \u201cm\u1ec1m\u201d khi u\u1ed1n (d\u1ec5 g\u00e2y nh\u1ea1y c\u1ea3m \u0103n m\u00f2n n\u1ebfu gi\u1eef trong 450\u2013850\u00b0C). N\u1ebfu v\u1eadt li\u1ec7u \u0111\u00e3 l\u00e0m c\u1ee9ng m\u1ea1nh do gia c\u00f4ng, ch\u1ec9 \u1ee7 dung d\u1ecbch (solution anneal ~1050\u00b0C v\u00e0 l\u00e0m ngu\u1ed9i nhanh) \u1edf c\u01a1 s\u1edf nhi\u1ec7t luy\u1ec7n \u0111\u1ea1t chu\u1ea9n.<br \/>\n&#8211; S\u1eed d\u1ee5ng khu\u00f4n u\u1ed1n c\u00f3 r\u00e3nh \u0111\u00fang k\u00edch th\u01b0\u1edbc v\u00e0 b\u1ec1 m\u1eb7t nh\u1eb5n; b\u00f4i tr\u01a1n \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<p>Ngu\u1ed3n: SSINA \u2013 Fabrication: Bending; The Fabricator \u2013 Tube bending without mandrel.<\/p>\n<h2 id=\"toc-7-kiem-soat-chat-luong-sau-uon\"><span class=\"ez-toc-section\" id=\"Kiem_soat_chat_luong_sau_uon\"><\/span>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng sau u\u1ed1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u0110o h\u00ecnh h\u1ecdc: g\u00f3c u\u1ed1n, CLR th\u1ef1c, \u0111\u1ed9 oval (\u1ed1ng tr\u00f2n), \u0111\u1ed9 l\u00f5m th\u00e0nh (h\u1ed9p).<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y th\u00e0nh: \u0111o si\u00eau \u00e2m\/\u0111o c\u01a1 \u1edf m\u1eb7t ngo\u00e0i v\u00e0 trong, t\u00ednh t\u1ef7 l\u1ec7 m\u1ecfng\/d\u00e0y.<br \/>\n&#8211; B\u1ec1 m\u1eb7t: soi v\u1ebft c\u00e0o\/\u0103n d\u00ednh; ti\u00eau ch\u00ed ho\u00e0n thi\u1ec7n theo c\u1ea5p \u0111\u00e1nh b\u00f3ng \u0111\u1eb7t ra tr\u01b0\u1edbc.<br \/>\n&#8211; M\u1ed1i h\u00e0n: ki\u1ec3m tra th\u1ea9m m\u1ef9, c\u00f3 th\u1ec3 th\u1ea9m th\u1ea5u m\u00e0u (PT) v\u1edbi chi ti\u1ebft ch\u1ecbu l\u1ef1c\/ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; Th\u1eed l\u1eafp: g\u00e1 jig ki\u1ec3m; v\u1edbi \u1ed1ng ti\u00eau chu\u1ea9n theo ASTM A554\/A312 c\u00f3 th\u1ec3 tham chi\u1ebfu th\u00eam th\u1eed flattening\/bulging n\u1ebfu c\u1ea7n.<\/p>\n<p>Tham kh\u1ea3o: ASTM A554; ASTM A312 \u2013 astm.org.<\/p>\n<h2 id=\"toc-8-bang-loi-thuong-gap-va-cach-khac-phuc-nhanh\"><span class=\"ez-toc-section\" id=\"Bang_loi_thuong_gap_va_cach_khac_phuc_nhanh\"><\/span>B\u1ea3ng l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c nhanh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Nh\u0103n m\u1eb7t trong: t\u0103ng boost; l\u1eafp wiper \u0111\u00fang v\u1ecb tr\u00ed\/g\u00f3c; \u0111\u01b0a m\u0169i mandrel s\u00e1t ti\u1ebfp tuy\u1ebfn h\u01a1n; gi\u1ea3m t\u1ed1c \u0111\u1ed9 u\u1ed1n; t\u0103ng b\u00f4i tr\u01a1n.<br \/>\n&#8211; M\u00f3p\/oval qu\u00e1 m\u1ee9c: t\u0103ng CLR; d\u00f9ng mandrel nhi\u1ec1u bi; t\u0103ng chi\u1ec1u d\u00e0y ph\u00f4i; gi\u1ea3m t\u1ed1c \u0111\u1ed9; n\u00e2ng ch\u1ea5t l\u01b0\u1ee3ng khu\u00f4n.<br \/>\n&#8211; X\u01b0\u1edbc\/galling: \u0111\u00e1nh b\u00f3ng v\u00e0\/ho\u1eb7c ph\u1ee7 khu\u00f4n; d\u00f9ng d\u1ea7u u\u1ed1n chuy\u00ean cho inox; l\u1ecdc s\u1ea1ch d\u1ea7u; gi\u1ea3m \u00e1p k\u1eb9p qu\u00e1 m\u1ee9c.<br \/>\n&#8211; Tr\u01b0\u1ee3t ph\u00f4i, sai g\u00f3c: t\u0103ng chi\u1ec1u d\u00e0i clamp; \u0111i\u1ec1u ch\u1ec9nh \u00e1p k\u1eb9p; d\u00f9ng l\u00f3t ma s\u00e1t.<br \/>\n&#8211; H\u1ed3i xu\u00e2n l\u1edbn: th\u00eam b\u00f9 g\u00f3c; ch\u1ecdn v\u1eadt li\u1ec7u \u1ee7 m\u1ec1m; t\u0103ng CLR; d\u00f9ng 304L thay 201 n\u1ebfu ti\u00eau chu\u1ea9n cho ph\u00e9p.<br \/>\n&#8211; H\u1ed9p b\u1ecb l\u00f5m th\u00e0nh: t\u0103ng boost v\u00e0 chi\u1ec1u d\u00e0i pressure die; d\u00f9ng mandrel profile; t\u0103ng CLR; ch\u1ecdn h\u1ed9p c\u00f3 g\u00f3c bo l\u1edbn h\u01a1n.<\/p>\n<h2 id=\"toc-9-vi-du-thiet-lap-thuc-te-case-study-ngan\"><span class=\"ez-toc-section\" id=\"Vi_du_thiet_lap_thuc_te_case_study_ngan\"><\/span>V\u00ed d\u1ee5 thi\u1ebft l\u1eadp th\u1ef1c t\u1ebf (case study ng\u1eafn)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Y\u00eau c\u1ea7u: \u1ed0ng inox 304 trang tr\u00ed \u03c638.1 \u00d7 1.2 mm, u\u1ed1n 90\u00b0, CLR = 57 mm (~1.5D), b\u1ec1 m\u1eb7t b\u00f3ng g\u01b0\u01a1ng.<br \/>\n&#8211; Ph\u00e2n t\u00edch: D\/t = 31.8 (m\u1ecfng) \u2192 b\u1eaft bu\u1ed9c mandrel nhi\u1ec1u bi + wiper.<br \/>\n&#8211; Khu\u00f4n: khu\u00f4n k\u00e9o v\u00e0 pressure ph\u1ee7 Cr c\u1ee9ng, \u0111\u00e1nh b\u00f3ng; wiper b\u1eb1ng th\u00e9p ph\u1ee7 TiN.<br \/>\n&#8211; C\u00e0i \u0111\u1eb7t:<br \/>\n  + Mandrel: m\u0169i c\u00e1ch ti\u1ebfp tuy\u1ebfn ~0.7 mm; 5 bi, b\u00f4i tr\u01a1n \u0111\u1eadm.<br \/>\n  + Clamp length ~ 3D; \u00e1p k\u1eb9p v\u1eeba \u0111\u1ee7 kh\u00f4ng \u0111\u1ec3 h\u1eb1n.<br \/>\n  + Boost ~ 35\u201340%; t\u1ed1c \u0111\u1ed9 u\u1ed1n ~ 12\u201315\u00b0\/s.<br \/>\n  + B\u00f9 h\u1ed3i xu\u00e2n +3.5\u00b0.<br \/>\n&#8211; K\u1ebft qu\u1ea3 m\u1ee5c ti\u00eau: ovality < 8%; thinning < 10%; b\u1ec1 m\u1eb7t kh\u00f4ng x\u01b0\u1edbc; g\u00f3c \u0111\u1ea1t 90\u00b0 \u00b10.5\u00b0.\n\n\n\n<h2 id=\"toc-10-goi-y-lua-chon-vat-lieu-de-de-uon-va-ben-ngoai-tro\"><span class=\"ez-toc-section\" id=\"Goi_y_lua_chon_vat_lieu_de_de_uon_va_ben_ngoai_troi\"><\/span>G\u1ee3i \u00fd l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111\u1ec3 d\u1ec5 u\u1ed1n v\u00e0 b\u1ec1n ngo\u00e0i tr\u1eddi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; H\u00e0ng trang tr\u00ed trong nh\u00e0: 304\/304L l\u00e0 l\u1ef1a ch\u1ecdn c\u00e2n b\u1eb1ng \u0111\u1ed9 b\u1ec1n \u2013 kh\u1ea3 n\u0103ng u\u1ed1n \u2013 b\u1ec1 m\u1eb7t \u0111\u1eb9p.<br \/>\n&#8211; Ngo\u00e0i tr\u1eddi\/ven bi\u1ec3n: 316\/316L; u\u1ed1n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 304 nh\u01b0ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n.<br \/>\n&#8211; Ti\u1ebft ki\u1ec7m chi ph\u00ed: 201 ch\u1ec9 d\u00f9ng trong m\u00f4i tr\u01b0\u1eddng kh\u00f4 r\u00e1o, c\u1ea7n test tr\u01b0\u1edbc v\u00ec h\u1ed3i xu\u00e2n l\u1edbn v\u00e0 kh\u00f3 u\u1ed1n \u0111\u1eb9p h\u01a1n.<\/p>\n<h2 id=\"toc-11-nguon-tham-khao\"><span class=\"ez-toc-section\" id=\"Nguon_tham_khao\"><\/span>Ngu\u1ed3n tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; ASTM A554 \u2013 Standard Specification for Welded Stainless Steel Mechanical Tubing: https:\/\/www.astm.org\/a0554-22.html<br \/>\n&#8211; ASTM A312\/A312M \u2013 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes: https:\/\/www.astm.org\/a0312_a0312m-23.html<br \/>\n&#8211; Bend Tooling Inc. \u2013 Tube Bending Knowledge Base: https:\/\/www.bendtooling.com\/tube-bending\/<br \/>\n&#8211; The Fabricator \/ The Tube &#038; Pipe Journal \u2013 Tube bending fundamentals and mandrel bending articles: https:\/\/www.thefabricator.com<\/p>\n<h2 id=\"toc-12-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>\u0110\u1ec3 u\u1ed1n \u1ed1ng v\u00e0 h\u1ed9p inox kh\u00f4ng b\u1ecb m\u00f3p, bi\u1ebfn d\u1ea1ng, h\u00e3y:<br \/>\n&#8211; Ch\u1ecdn \u0111\u00fang ph\u01b0\u01a1ng ph\u00e1p (u\u1ed1n k\u00e9o c\u00f3 mandrel\/wiper cho b\u00e1n k\u00ednh nh\u1ecf, b\u1ec1 m\u1eb7t \u0111\u1eb9p).<br \/>\n&#8211; Thi\u1ebft k\u1ebf b\u00e1n k\u00ednh h\u1ee3p l\u00fd (\u1ed1ng: \u22651.5\u20132D v\u1edbi mandrel; h\u1ed9p: \u22651.5\u20132.0\u00d7 c\u1ea1nh khi c\u00f3 mandrel).<br \/>\n&#8211; B\u1ed1 tr\u00ed m\u1ed1i h\u00e0n \u1edf tr\u1ee5c trung h\u00f2a; d\u00f9ng khu\u00f4n ph\u1ee7\/b\u00f3ng v\u00e0 b\u00f4i tr\u01a1n chu\u1ea9n inox.<br \/>\n&#8211; T\u1ed1i \u01b0u th\u00f4ng s\u1ed1: boost 20\u201360%, t\u1ed1c \u0111\u1ed9 v\u1eeba ph\u1ea3i, b\u00f9 h\u1ed3i xu\u00e2n 2\u20136\u00b0.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng b\u1eb1ng \u0111o ovality, thinning, b\u1ec1 m\u1eb7t v\u00e0 jig l\u1eafp.<\/p>\n<p>L\u00e0m \u0111\u00fang 5 \u0111i\u1ec3m tr\u00ean, b\u1ea1n s\u1ebd \u1ed5n \u0111\u1ecbnh \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng u\u1ed1n, gi\u1ea3m ph\u1ebf ph\u1ea9m v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 giao h\u00e0ng.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n khu\u00f4n, b\u00e1n k\u00ednh v\u00e0 t\u1ed1i \u01b0u th\u00f4ng s\u1ed1 cho m\u00e3 \u1ed1ng\/h\u1ed9p c\u1ee5 th\u1ec3? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb k\u1ef9 thu\u1eadt 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 u\u1ed1n \u1ed1ng\/h\u1ed9p inox kh\u00f4ng m\u00f3p: ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p, b\u00e1n k\u00ednh t\u1ed1i thi\u1ec3u, khu\u00f4n mandrel\u2013wiper, th\u00f4ng s\u1ed1 m\u00e1y, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 kh\u1eafc ph\u1ee5c l\u1ed7i.<\/p>\n","protected":false},"author":7,"featured_media":1007,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2627","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\/2627","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=2627"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2627\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1007"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}