{"id":2086,"date":"2026-06-01T00:33:26","date_gmt":"2026-05-31T17:33:26","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/inox-hop-vuong-chu-nhat-quy-cach-mac-thep-ung-dung-khung\/"},"modified":"2026-06-01T00:33:26","modified_gmt":"2026-05-31T17:33:26","slug":"inox-hop-vuong-chu-nhat-quy-cach-mac-thep-ung-dung-khung","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/inox-hop-vuong-chu-nhat-quy-cach-mac-thep-ung-dung-khung\/","title":{"rendered":"Inox h\u1ed9p vu\u00f4ng &#038; ch\u1eef nh\u1eadt: Quy c\u00e1ch, m\u00e1c th\u00e9p, \u1ee9ng d\u1ee5ng khung"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-inox-hop-la-gi-tieu-chuan-dung-sai-be-mat\">Inox h\u1ed9p l\u00e0 g\u00ec? Ti\u00eau chu\u1ea9n, dung sai, b\u1ec1 m\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-1-cac-quy-cach-inox-hop-pho-bien-tai-viet-nam\">C\u00e1c quy c\u00e1ch inox h\u1ed9p ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-2-lua-chon-mac-inox-theo-moi-truong-lam-viec\">L\u1ef1a ch\u1ecdn m\u00e1c inox theo m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/a><\/li>\n<li><a href=\"#toc-3-tinh-chat-co-hoc-dien-hinh-tham-khao-thiet-ke-so-b\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u0111i\u1ec3n h\u00ecnh (tham kh\u1ea3o thi\u1ebft k\u1ebf s\u01a1 b\u1ed9)<\/a><\/li>\n<li><a href=\"#toc-4-ung-dung-dien-hinh-lam-khung-ket-cau\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh l\u00e0m khung k\u1ebft c\u1ea5u<\/a><\/li>\n<li><a href=\"#toc-5-huong-dan-chon-quy-cach-theo-tai-va-nhip\">H\u01b0\u1edbng d\u1eabn ch\u1ecdn quy c\u00e1ch theo t\u1ea3i v\u00e0 nh\u1ecbp<\/a><\/li>\n<li><a href=\"#toc-6-gia-cong-han-va-lap-dung-de-khung-ben-dep\">Gia c\u00f4ng, h\u00e0n v\u00e0 l\u1eafp d\u1ef1ng \u0111\u1ec3 khung b\u1ec1n \u2013 \u0111\u1eb9p<\/a><\/li>\n<li><a href=\"#toc-7-kiem-tra-chat-luong-tranh-mua-nham-mac\">Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng &#038; tr\u00e1nh mua nh\u1ea7m m\u00e1c<\/a><\/li>\n<li><a href=\"#toc-8-bao-gia-yeu-to-anh-huong\">B\u00e1o gi\u00e1 &#038; y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng<\/a><\/li>\n<li><a href=\"#toc-9-tai-lieu-tham-khao-chon-loc\">T\u00e0i li\u1ec7u tham kh\u1ea3o ch\u1ecdn l\u1ecdc<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Inox h\u1ed9p (h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt) l\u00e0 m\u1ed9t trong nh\u1eefng s\u1ea3n ph\u1ea9m inox quan tr\u1ecdng b\u00ean c\u1ea1nh t\u1ea5m, cu\u1ed9n, \u1ed1ng v\u00e0 thanh \u0111\u1eb7c. B\u00e0i vi\u1ebft n\u00e0y t\u1eadp trung v\u00e0o c\u00e1c quy c\u00e1ch ph\u1ed5 bi\u1ebfn, m\u00e1c th\u00e9p (201\/304\/316\/430), ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt, v\u00e0 h\u01b0\u1edbng d\u1eabn ch\u1ecdn ti\u1ebft di\u1ec7n t\u1ed1i \u01b0u cho khung k\u1ebft c\u1ea5u trong nh\u00e0 x\u01b0\u1edfng, c\u00f4ng tr\u00ecnh v\u00e0 s\u1ea3n xu\u1ea5t c\u01a1 kh\u00ed.<\/p>\n<h2 id=\"toc-0-inox-hop-la-gi-tieu-chuan-dung-sai-be-mat\">Inox h\u1ed9p l\u00e0 g\u00ec? Ti\u00eau chu\u1ea9n, dung sai, b\u1ec1 m\u1eb7t<\/h2>\n<h3>Quy tr\u00ecnh v\u00e0 ph\u1ea1m vi s\u1eed d\u1ee5ng<\/h3>\n<p>&#8211; Inox h\u1ed9p \u0111\u01b0\u1ee3c t\u1ea1o h\u00ecnh t\u1eeb th\u00e9p cu\u1ed9n inox, gh\u00e9p m\u00ed v\u00e0 h\u00e0n d\u1ecdc (TIG\/laser), sau \u0111\u00f3 n\u1eafn, l\u00e0m s\u1ea1ch m\u1ed1i h\u00e0n (pickling\/passivation), \u0111\u00e1nh b\u00f3ng\/b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t.<br \/>\n&#8211; Hai nh\u00f3m ch\u00ednh theo m\u1ee5c \u0111\u00edch:<br \/>\n  + D\u00f9ng c\u01a1 kh\u00ed\/trang tr\u00ed (mechanical\/ornamental): b\u1ec1 m\u1eb7t \u0111\u1eb9p, dung sai ch\u1eb7t, ph\u1ed5 bi\u1ebfn trong c\u1eeda c\u1ed5ng, lan can, n\u1ed9i ngo\u1ea1i th\u1ea5t, khung m\u00e1y nh\u1eb9.<br \/>\n  + D\u1ea1ng k\u1ebft c\u1ea5u: \u01b0u ti\u00ean \u0111\u1ed9 b\u1ec1n, chi\u1ec1u d\u00e0y l\u1edbn h\u01a1n, d\u00f9ng cho khung m\u00e1i, gi\u00e0n, s\u00e0n thao t\u00e1c, khung bi\u1ec3n, d\u00e0n n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<h3>Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng v\u00e0 dung sai \u0111i\u1ec3n h\u00ecnh<\/h3>\n<p>&#8211; ASTM A554 (tubes c\u01a1 kh\u00ed b\u1eb1ng inox, vu\u00f4ng\/ch\u1eef nh\u1eadt\/tr\u00f2n): ph\u1ed5 bi\u1ebfn trong th\u01b0\u01a1ng m\u1ea1i t\u1ea1i Vi\u1ec7t Nam; quy \u0111\u1ecbnh th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh t\u1ed1i thi\u1ec3u, ki\u1ec3m tra v\u00e0 dung sai k\u00edch th\u01b0\u1edbc.<br \/>\n&#8211; Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc theo EN 10088\/ASTM A240 cho c\u00e1c m\u00e1c inox 201\/304\/316\/430.<br \/>\n&#8211; Thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u tham kh\u1ea3o Eurocode 3 \u2013 EN 1993-1-4 (th\u00e9p kh\u00f4ng g\u1ec9) ho\u1eb7c H\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf c\u1ee7a Euro Inox.<br \/>\n&#8211; Dung sai tham kh\u1ea3o ASTM A554:<br \/>\n  + K\u00edch th\u01b0\u1edbc ngo\u00e0i: \u00b10,5% (t\u1ed1i thi\u1ec3u \u00b10,13 mm).<br \/>\n  + \u0110\u1ed9 d\u00e0y: \u00b110%.<br \/>\n  + \u0110\u1ed9 vu\u00f4ng g\u00f3c\/g\u00f3c bo: g\u00f3c bo \u0111i\u1ec3n h\u00ecnh 1,5\u20132,0 l\u1ea7n chi\u1ec1u d\u00e0y.<br \/>\n  + \u0110\u1ed9 th\u1eb3ng\/\u0111\u1ed9 xo\u1eafn: ki\u1ec3m so\u00e1t theo chi\u1ec1u d\u00e0i, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u l\u1eafp d\u1ef1ng.<\/p>\n<h3>T\u00f9y ch\u1ecdn b\u1ec1 m\u1eb7t<\/h3>\n<p>&#8211; No.1 (c\u00e1n n\u00f3ng t\u1ea9y g\u1ec9), 2B (m\u1edd c\u00f4ng nghi\u1ec7p), BA (b\u00f3ng g\u01b0\u01a1ng c\u00e1n ngu\u1ed9i), HL\/No.4 (x\u01b0\u1edbc t\u00f3c trang tr\u00ed), Mirror No.8 (b\u00f3ng g\u01b0\u01a1ng).<br \/>\n&#8211; H\u1ea7u h\u1ebft inox h\u1ed9p th\u01b0\u01a1ng m\u1ea1i c\u00f3 m\u00e0ng PVC b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t khi gia c\u00f4ng\/l\u1eafp d\u1ef1ng.<\/p>\n<h2 id=\"toc-1-cac-quy-cach-inox-hop-pho-bien-tai-viet-nam\">C\u00e1c quy c\u00e1ch inox h\u1ed9p ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/h2>\n<p>Ghi ch\u00fa: Chi\u1ec1u d\u00e0i ti\u00eau chu\u1ea9n 6 m\/c\u00e2y; c\u00f3 th\u1ec3 c\u1eaft theo y\u00eau c\u1ea7u.<\/p>\n<h3>H\u1ed9p vu\u00f4ng (tham kh\u1ea3o ph\u1ed5 bi\u1ebfn)<\/h3>\n<p>&#8211; 10\u00d710; 12\u00d712; 20\u00d720; 25\u00d725; 30\u00d730; 40\u00d740; 50\u00d750; 60\u00d760; 70\u00d770; 80\u00d780; 90\u00d790; 100\u00d7100 mm.<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y: 0,6\u20131,2 mm (trang tr\u00ed nh\u1eb9); 1,5\u20133,0 mm (khung v\u1eeba); 3,0\u20135,0 mm (khung n\u1eb7ng\/ch\u1ecbu l\u1ef1c, \u0111\u1eb7t h\u00e0ng).<\/p>\n<h3>H\u1ed9p ch\u1eef nh\u1eadt (tham kh\u1ea3o ph\u1ed5 bi\u1ebfn)<\/h3>\n<p>&#8211; 10\u00d720; 15\u00d730; 20\u00d740; 25\u00d750; 30\u00d760; 40\u00d780; 50\u00d7100; 60\u00d7120 mm, v.v.<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y t\u01b0\u01a1ng t\u1ef1 h\u1ed9p vu\u00f4ng; ch\u1ecdn ti\u1ebft di\u1ec7n theo ph\u01b0\u01a1ng ch\u1ecbu u\u1ed1n (chi\u1ec1u cao l\u1edbn theo ph\u01b0\u01a1ng t\u1ea3i).<\/p>\n<h3>G\u00f3c bo v\u00e0 \u1ea3nh h\u01b0\u1edfng l\u1eafp d\u1ef1ng<\/h3>\n<p>&#8211; G\u00f3c bo l\u1edbn gi\u00fap h\u00e0n \u0111\u1eb9p, \u00edt t\u1eadp trung \u1ee9ng su\u1ea5t; g\u00f3c bo nh\u1ecf cho g\u00f3c c\u1ea1nh s\u1eafc n\u00e9t nh\u01b0ng kh\u00f3 \u0111\u00e1nh b\u00f3ng.<br \/>\n&#8211; Khi y\u00eau c\u1ea7u \u1ed1p b\u1ecbt \u0111\u1ea7u, n\u1eafp ch\u1ee5p, c\u1ea7n \u0111\u1ed3ng b\u1ed9 b\u00e1n k\u00ednh g\u00f3c bo \u0111\u1ec3 \u0103n kh\u1edbp.<\/p>\n<h2 id=\"toc-2-lua-chon-mac-inox-theo-moi-truong-lam-viec\">L\u1ef1a ch\u1ecdn m\u00e1c inox theo m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/h2>\n<p>&#8211; Inox 201 (Cr~16\u201317%, Ni th\u1ea5p, Mn\/N cao): c\u1ee9ng b\u1ec1 m\u1eb7t t\u1ed1t, gi\u00e1 kinh t\u1ebf; ph\u00f9 h\u1ee3p n\u1ed9i th\u1ea5t\/ngo\u1ea1i th\u1ea5t kh\u00f4. H\u1ea1n ch\u1ebf trong m\u00f4i tr\u01b0\u1eddng clorua\/ven bi\u1ec3n v\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 k\u00e9m h\u01a1n 304\/316.<br \/>\n&#8211; Inox 304\/304L (Cr~18%, Ni~8%): c\u00e2n b\u1eb1ng gi\u1eefa ch\u1ed1ng \u0103n m\u00f2n v\u00e0 gi\u00e1; d\u00f9ng r\u1ed9ng r\u00e3i cho khung m\u00e1y, th\u1ef1c ph\u1ea9m, ngo\u1ea1i th\u1ea5t \u0111\u00f4 th\u1ecb. 304L \u01b0u ti\u00ean khi h\u00e0n nhi\u1ec1u\/t\u1ea5m d\u00e0y \u0111\u1ec3 gi\u1ea3m \u0103n m\u00f2n v\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t.<br \/>\n&#8211; Inox 316\/316L (th\u00eam Mo~2%): ch\u1ed1ng pitting\/crevice v\u01b0\u1ee3t tr\u1ed9i; ph\u00f9 h\u1ee3p khu v\u1ef1c ven bi\u1ec3n, h\u1ed3 b\u01a1i, h\u00f3a ch\u1ea5t nh\u1eb9, c\u00f4ng tr\u00ecnh bi\u1ec3n.<br \/>\n&#8211; Inox 430 (ferritic, kh\u00f4ng\/\u00edt nhi\u1ec5m t\u1eeb): kinh t\u1ebf, ch\u1ed1ng \u0103n m\u00f2n th\u1ea5p; \u00edt d\u00f9ng l\u00e0m khung ngo\u00e0i tr\u1eddi, ch\u1ee7 y\u1ebfu n\u1ed9i th\u1ea5t kh\u00f4\/\u1ed1p trang tr\u00ed.<br \/>\n&#8211; Ch\u1ec9 s\u1ed1 PREN tham kh\u1ea3o: 201\u224816; 304\u224818\u201319; 316\u224824 \u21d2 gi\u00e1 tr\u1ecb c\u00e0ng cao, ch\u1ed1ng r\u1ed7 clorua c\u00e0ng t\u1ed1t (Ngu\u1ed3n: Nickel Institute, Outokumpu datasheets).<\/p>\n<h2 id=\"toc-3-tinh-chat-co-hoc-dien-hinh-tham-khao-thiet-ke-so-b\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc \u0111i\u1ec3n h\u00ecnh (tham kh\u1ea3o thi\u1ebft k\u1ebf s\u01a1 b\u1ed9)<\/h2>\n<p>&#8211; M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i E \u2248 193 GPa (austenitic).<br \/>\n&#8211; Gi\u1edbi h\u1ea1n ch\u1ea3y Rp0.2: 201 \u2248 240\u2013275 MPa; 304\/316 \u2248 200\u2013230 MPa; 430 \u2248 250\u2013280 MPa.<br \/>\n&#8211; \u0110\u1ed9 b\u1ec1n k\u00e9o Rm: 201 \u2248 650\u2013880 MPa; 304\/316 \u2248 515\u2013700 MPa.<br \/>\n&#8211; H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t ~16\u201317\u00d710^-6\/K (20\u2013100\u00b0C) \u21d2 c\u1ea7n khe gi\u00e3n n\u1edf \u1edf khung d\u00e0i.<br \/>\n&#8211; L\u01b0u \u00fd: d\u00f9ng 304L\/316L khi h\u00e0n d\u00e0y \u0111\u1ec3 gi\u1ea3m nh\u1ea1y c\u1ea3m \u0103n m\u00f2n li\u00ean h\u1ea1t. (Ngu\u1ed3n: ASTM\/EN 10088; Outokumpu).<\/p>\n<h2 id=\"toc-4-ung-dung-dien-hinh-lam-khung-ket-cau\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh l\u00e0m khung k\u1ebft c\u1ea5u<\/h2>\n<p>&#8211; Khung nh\u1eb9 v\u00e0 trang tr\u00ed: c\u1eeda c\u1ed5ng, lan can, m\u00e1i che, kiosk, khung bi\u1ec3n h\u1ed9p \u0111\u00e8n. Khuy\u1ebfn ngh\u1ecb: 201\/304 d\u00e0y 1,0\u20131,5 mm (nh\u1eb9), 1,5\u20132,0 mm (v\u1eeba).<br \/>\n&#8211; Khung m\u00e1y, b\u1ec7 thi\u1ebft b\u1ecb, b\u0103ng t\u1ea3i: 304\/304L d\u00e0y 2,0\u20133,0 mm; h\u1ed9p ch\u1eef nh\u1eadt \u0111\u1eb7t chi\u1ec1u cao theo ph\u01b0\u01a1ng ch\u1ecbu u\u1ed1n.<br \/>\n&#8211; M\u00f4i tr\u01b0\u1eddng v\u1ec7 sinh (th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c, cleanroom): 304\/316 b\u1ec1 m\u1eb7t 2B\/BA ho\u1eb7c HL, m\u1ed1i h\u00e0n m\u00e0i m\u1ecbn, passivation.<br \/>\n&#8211; Ngo\u00e0i tr\u1eddi ven bi\u1ec3n\/h\u00f3a ch\u1ea5t nh\u1eb9: 316\/316L, \u0111\u1ed9 d\u00e0y \u22652,0 mm, b\u1ecbt k\u00edn \u0111\u1ea7u h\u1ed9p \u0111\u1ec3 tr\u00e1nh \u0111\u1ecdng mu\u1ed1i\/n\u01b0\u1edbc.<\/p>\n<h2 id=\"toc-5-huong-dan-chon-quy-cach-theo-tai-va-nhip\">H\u01b0\u1edbng d\u1eabn ch\u1ecdn quy c\u00e1ch theo t\u1ea3i v\u00e0 nh\u1ecbp<\/h2>\n<p>Quy tr\u00ecnh 6 b\u01b0\u1edbc (d\u00e0nh cho t\u00ednh nhanh hi\u1ec7n tr\u01b0\u1eddng; c\u00f4ng tr\u00ecnh ch\u1ecbu l\u1ef1c ch\u00ednh v\u1eabn ph\u1ea3i t\u00ednh theo ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf):<br \/>\n1) X\u00e1c \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng v\u00e0 ch\u1ecdn m\u00e1c inox (201\/304\/316).<br \/>\n2) X\u00e1c \u0111\u1ecbnh nh\u1ecbp L, t\u1ea3i ph\u00e2n b\u1ed1 w (kN\/m) v\u00e0 t\u1ea3i t\u1eadp trung n\u1ebfu c\u00f3; c\u1ed9ng th\u00eam h\u1ec7 s\u1ed1 an to\u00e0n v\u00e0 t\u1ea3i gi\u00f3 n\u1ebfu ngo\u00e0i tr\u1eddi.<br \/>\n3) Ch\u1ecdn h\u00ecnh d\u1ea1ng: ch\u1eef nh\u1eadt (m\u1ea1nh theo ph\u01b0\u01a1ng chi\u1ec1u cao) hay vu\u00f4ng (th\u1ea9m m\u1ef9\/\u0111\u1ed1i x\u1ee9ng).<br \/>\n4) T\u00ednh u\u1ed1n: Mmax = wL^2\/8 (d\u1ea7m \u0111\u01a1n gi\u1ea3n, t\u1ea3i \u0111\u1ec1u). Ch\u1ecdn ti\u1ebft di\u1ec7n c\u00f3 m\u00f4 \u0111un ch\u1ed1ng u\u1ed1n Z \u2265 M\/\u03c3cho ph\u00e9p. V\u1edbi inox austenitic, c\u00f3 th\u1ec3 l\u1ea5y \u03c3cho ph\u00e9p s\u01a1 b\u1ed9 0,6\u00d7Rp0.2.<br \/>\n5) Ki\u1ec3m tra v\u00f5ng: \u03b4 = 5wL^4\/(384EI). Gi\u1edbi h\u1ea1n tham kh\u1ea3o: \u03b4 \u2264 L\/300 \u0111\u1ebfn L\/360 cho khung ki\u1ebfn tr\u00fac; nghi\u00eam ng\u1eb7t h\u01a1n v\u1edbi b\u1ec1 m\u1eb7t k\u00ednh\/\u0111\u00e1.<br \/>\n6) Ki\u1ec3m tra li\u00ean k\u1ebft: b\u1ea3n m\u00e3, bul\u00f4ng neo, m\u1ed1i h\u00e0n (chi\u1ec1u d\u00e0i\/chi\u1ec1u cao \u0111\u01b0\u1eddng h\u00e0n), ch\u1ed1ng xo\u1eafn\/gi\u1eb1ng.<\/p>\n<p>V\u00ed d\u1ee5 t\u00ednh nhanh<br \/>\n&#8211; B\u00e0i to\u00e1n: D\u1ea7m khung m\u00e1i nh\u1ecbp L = 2,0 m, t\u1ea3i \u0111\u1ec1u w = 1,0 kN\/m (bao g\u1ed3m t\u1ea5m l\u1ee3p, gi\u00f3 t\u00ednh trung b\u00ecnh, t\u1ef1 tr\u1ecdng). Ch\u1ecdn inox 304.<br \/>\n&#8211; N\u1ed9i l\u1ef1c: Mmax = wL^2\/8 = 0,5 kN\u00b7m = 0,5\u00d710^6 N\u00b7mm.<br \/>\n&#8211; Gi\u1edbi h\u1ea1n \u1ee9ng su\u1ea5t cho ph\u00e9p s\u01a1 b\u1ed9: \u03c3cho ph\u00e9p \u2248 0,6\u00d7205 \u2248 123 MPa (304).<br \/>\n&#8211; Th\u1eed ti\u1ebft di\u1ec7n 40\u00d780\u00d72,0 mm (\u0111\u1eb7t 80 mm theo ph\u01b0\u01a1ng \u0111\u1ee9ng):<br \/>\n  + M\u00f4 men qu\u00e1n t\u00ednh Ix \u2248 3,90\u00d710^5 mm^4 \u21d2 m\u00f4 \u0111un Zx = Ix\/(H\/2) \u2248 9,74\u00d710^3 mm^3.<br \/>\n  + \u1ee8ng su\u1ea5t u\u1ed1n: \u03c3 = M\/Z \u2248 0,5\u00d710^6 \/ 9,74\u00d710^3 \u2248 51 MPa < 123 MPa (\u0111\u1ea1t).  \n  + \u0110\u1ed9 v\u00f5ng: \u03b4 \u2248 2,8 mm < L\/300 = 6,7 mm (\u0111\u1ea1t).  \n  + Kh\u1ed1i l\u01b0\u1ee3ng tham kh\u1ea3o: A \u2248 464 mm^2 \u21d2 ~3,7 kg\/m.  \nK\u1ebft lu\u1eadn: 40\u00d780\u00d72,0 mm \u2013 304 \u0111\u00e1p \u1ee9ng u\u1ed1n\/v\u00f5ng cho \u0111i\u1ec1u ki\u1ec7n tr\u00ean, c\u00f2n d\u01b0 an to\u00e0n \u0111\u1ec3 t\u00ednh th\u00eam c\u00e1c chi ti\u1ebft li\u00ean k\u1ebft.\n\nM\u1eb9o ch\u1ecdn nhanh theo kinh nghi\u1ec7m th\u1ecb tr\u01b0\u1eddng\n- Nh\u1ecbp 1,5\u20132,0 m, t\u1ea3i nh\u1eb9 m\u00e1i t\u00f4n\/nh\u1ef1a: 30\u00d760\u00d71,5\u20132,0 mm (201\/304) ho\u1eb7c 40\u00d740\u00d72,0 mm.  \n- Nh\u1ecbp 2,0\u20133,0 m, t\u1ea3i trung b\u00ecnh: 40\u00d780\u00d72,0\u20133,0 mm (304).  \n- Khung b\u1ec7 m\u00e1y rung: \u01b0u ti\u00ean h\u1ed9p vu\u00f4ng 50\u00d750\u00d72,5\u20133,0 mm (304L), th\u00eam gi\u1eb1ng ch\u00e9o.  \nLu\u00f4n ki\u1ec3m tra b\u1eb1ng t\u00ednh to\u00e1n ti\u00eau chu\u1ea9n khi l\u00e0 c\u1ea5u ki\u1ec7n ch\u1ecbu l\u1ef1c ch\u00ednh ho\u1eb7c ch\u1ecbu gi\u00f3 m\u1ea1nh.\n\n\n\n<h2 id=\"toc-6-gia-cong-han-va-lap-dung-de-khung-ben-dep\">Gia c\u00f4ng, h\u00e0n v\u00e0 l\u1eafp d\u1ef1ng \u0111\u1ec3 khung b\u1ec1n \u2013 \u0111\u1eb9p<\/h2>\n<p>&#8211; H\u00e0n: d\u00f9ng que\/kim lo\u1ea1i h\u00e0n t\u01b0\u01a1ng th\u00edch (308L cho 304, 316L cho 316); h\u00e0n TIG cho m\u1ed1i \u0111\u1eb9p, h\u1ea1n ch\u1ebf bi\u1ebfn d\u1ea1ng; l\u00e0m s\u1ea1ch x\u1ec9, pickling\/passivation sau h\u00e0n \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; C\u1eaft khoan: d\u00f9ng l\u01b0\u1ee1i\/c m\u0169i khoan h\u1ee3p kim c\u1ee9ng, t\u1ed1c \u0111\u1ed9 th\u1ea5p \u2013 l\u1ef1c c\u1eaft \u1ed5n \u0111\u1ecbnh; tr\u00e1nh l\u00e0m b\u1ea9n b\u1ec1 m\u1eb7t b\u1eb1ng h\u1ea1t th\u00e9p carbon.<br \/>\n&#8211; Ch\u1ed1ng \u0111\u1ecdng n\u01b0\u1edbc: khoan l\u1ed7 tho\u00e1t ho\u1eb7c b\u1ecbt k\u00edn \u0111\u1ea7u h\u1ed9p; tr\u00e1nh b\u1eaby \u1ea9m g\u00e2y \u0103n m\u00f2n khe.<br \/>\n&#8211; L\u1eafp d\u1ef1ng ngo\u00e0i tr\u1eddi: th\u00eam b\u1ea3n m\u00e3 d\u00e0y, bul\u00f4ng A2\/A4; c\u00e1ch ly \u0111i\u1ec7n h\u00f3a khi ti\u1ebfp x\u00fac kim lo\u1ea1i kh\u00e1c; b\u0103ng keo\/\u0111\u1ec7m c\u00e1ch ly t\u1ea1i v\u1ecb tr\u00ed gh\u00e9p v\u1edbi nh\u00f4m\/th\u00e9p m\u1ea1 k\u1ebdm.<\/p>\n<h2 id=\"toc-7-kiem-tra-chat-luong-tranh-mua-nham-mac\">Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng &#038; tr\u00e1nh mua nh\u1ea7m m\u00e1c<\/h2>\n<p>&#8211; Y\u00eau c\u1ea7u MTC\/CO-CQ ghi r\u00f5 ti\u00eau chu\u1ea9n (ASTM A554), m\u00e1c, k\u00edch th\u01b0\u1edbc, b\u1ec1 m\u1eb7t.<br \/>\n&#8211; Ki\u1ec3m ch\u1ee9ng nhanh:<br \/>\n  + Ki\u1ec3m tra th\u00e0nh ph\u1ea7n b\u1eb1ng m\u00e1y PMI\/XRF (\u01b0u ti\u00ean d\u1ef1 \u00e1n).<br \/>\n  + Nam ch\u00e2m kh\u00f4ng ph\u1ea3i l\u00e0 ti\u00eau ch\u00ed tuy\u1ec7t \u0111\u1ed1i; 201 v\u00e0 430 c\u00f3 th\u1ec3 h\u00fat m\u1ea1nh h\u01a1n 304, nh\u01b0ng 304 sau gia c\u00f4ng ngu\u1ed9i v\u1eabn c\u00f3 th\u1ec3 h\u01a1i nhi\u1ec5m t\u1eeb.<br \/>\n  + Th\u1eed \u0103n m\u00f2n t\u1ea1i ch\u1ed7 (gi\u1ecdt FeCl3\/NaCl) ch\u1ec9 mang t\u00ednh tham kh\u1ea3o; n\u00ean d\u1ef1a tr\u00ean ph\u00e2n t\u00edch h\u00f3a h\u1ecdc v\u00e0 kinh nghi\u1ec7m m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf.<\/p>\n<h2 id=\"toc-8-bao-gia-yeu-to-anh-huong\">B\u00e1o gi\u00e1 &#038; y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng<\/h2>\n<p>&#8211; M\u00e1c th\u00e9p (201 < 304 < 316), \u0111\u1ed9 d\u00e0y v\u00e0 k\u00edch th\u01b0\u1edbc; b\u1ec1 m\u1eb7t (BA\/Mirror cao h\u01a1n HL\/2B).  \n- Ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n v\u00e0 m\u1ee9c \u0111\u1ed9 m\u00e0i b\u00f3ng; dung sai ch\u1eb7t gi\u00e1 cao h\u01a1n.  \n- Bi\u1ebfn \u0111\u1ed9ng gi\u00e1 Nickel\/Molybdenum to\u00e0n c\u1ea7u; l\u00f4 h\u00e0ng c\u1eaft theo quy c\u00e1ch c\u00f3 th\u1ec3 \u0111\u1ed9i gi\u00e1 do hao h\u1ee5t.  \n- D\u1ecbch v\u1ee5 gia c\u00f4ng: c\u1eaft theo k\u00edch th\u01b0\u1edbc, \u0111\u1ed9t khoan, l\u00e0m n\u1eafp b\u1ecbt, \u0111\u00e1nh x\u01b0\u1edbc\/\u0111\u00e1nh b\u00f3ng theo y\u00eau c\u1ea7u.\n\n\n\n<h2 id=\"toc-9-tai-lieu-tham-khao-chon-loc\">T\u00e0i li\u1ec7u tham kh\u1ea3o ch\u1ecdn l\u1ecdc<\/h2>\n<p>&#8211; ASTM A554 \u2013 Welded Stainless Steel Mechanical Tubing (ti\u00eau chu\u1ea9n k\u00edch th\u01b0\u1edbc, dung sai, c\u01a1 t\u00ednh).<br \/>\n&#8211; Euro Inox: Design Manual for Structural Stainless Steel (d\u1ef1a tr\u00ean EN 1993-1-4).<br \/>\n&#8211; Nickel Institute \u2013 Guidelines for Selection of Stainless Steels (l\u1ef1a ch\u1ecdn theo m\u00f4i tr\u01b0\u1eddng, PREN).<br \/>\n&#8211; Outokumpu Stainless Steel Datasheets \u2013 201\/304\/316\/430 (t\u00ednh ch\u1ea5t c\u01a1 l\u00fd v\u00e0 ch\u1ed1ng \u0103n m\u00f2n).<\/p>\n<h2 id=\"toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; Inox h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt theo ASTM A554 v\u1edbi c\u00e1c m\u00e1c 201\/304\/316 cung c\u1ea5p gi\u1ea3i ph\u00e1p khung k\u1ebft c\u1ea5u b\u1ec1n, s\u1ea1ch v\u00e0 \u0111\u1eb9p.<br \/>\n&#8211; Ch\u1ecdn \u0111\u00fang m\u00e1c theo m\u00f4i tr\u01b0\u1eddng (316 cho ven bi\u1ec3n, 304 cho \u0111a d\u1ee5ng, 201 cho kinh t\u1ebf kh\u00f4 r\u00e1o), \u0111\u00fang ti\u1ebft di\u1ec7n theo t\u1ea3i\/nh\u1ecbp (\u01b0u ti\u00ean h\u1ed9p ch\u1eef nh\u1eadt \u0111\u1eb7t chi\u1ec1u cao theo ph\u01b0\u01a1ng ch\u1ecbu u\u1ed1n), v\u00e0 thi c\u00f4ng chu\u1ea9n (h\u00e0n t\u01b0\u01a1ng th\u00edch, passivation, tho\u00e1t n\u01b0\u1edbc) s\u1ebd quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd.<br \/>\n&#8211; V\u1edbi \u0111a d\u1ea1ng quy c\u00e1ch s\u1eb5n c\u00f3 10\u00d710 \u0111\u1ebfn 100\u00d7100 v\u00e0 20\u00d740 \u0111\u1ebfn 50\u00d7100 mm, \u0111\u1ed9 d\u00e0y 0,6\u20135,0 mm, b\u1ea1n c\u00f3 th\u1ec3 t\u1ed1i \u01b0u gi\u1eefa chi ph\u00ed \u2013 th\u1ea9m m\u1ef9 \u2013 \u0111\u1ed9 b\u1ec1n cho h\u1ea7u h\u1ebft \u1ee9ng d\u1ee5ng khung.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c v\u00e0 quy c\u00e1ch t\u1ed1i \u01b0u cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ed5ng h\u1ee3p quy c\u00e1ch inox h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt, \u0111\u1ed9 d\u00e0y, m\u00e1c 201\/304\/316, ti\u00eau chu\u1ea9n ASTM A554 v\u00e0 c\u00e1ch t\u00ednh ch\u1ecdn ti\u1ebft di\u1ec7n l\u00e0m khung k\u1ebft c\u1ea5u b\u1ec1n, \u0111\u1eb9p.<\/p>\n","protected":false},"author":7,"featured_media":1070,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2086","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\/2086","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=2086"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2086\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1070"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}