{"id":2057,"date":"2026-05-25T00:35:16","date_gmt":"2026-05-24T17:35:16","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/inox-va-nhom-so-sanh-trong-luong-do-cung-kha-nang-chong-oxy-hoa\/"},"modified":"2026-05-25T00:35:16","modified_gmt":"2026-05-24T17:35:16","slug":"inox-va-nhom-so-sanh-trong-luong-do-cung-kha-nang-chong-oxy-hoa","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/inox-va-nhom-so-sanh-trong-luong-do-cung-kha-nang-chong-oxy-hoa\/","title":{"rendered":"Inox v\u00e0 Nh\u00f4m: So s\u00e1nh tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 c\u1ee9ng, kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-nhung-con-so-cot-loi-can-nho\">Nh\u1eefng con s\u1ed1 c\u1ed1t l\u00f5i c\u1ea7n nh\u1edb<\/a><\/li>\n<li><a href=\"#toc-1-trong-luong-tinh-nhanh-va-vi-du-thuc-te\">Tr\u1ecdng l\u01b0\u1ee3ng: t\u00ednh nhanh v\u00e0 v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-2-do-cung-phan-biet-do-cung-vung-va-do-cung-be-mat\">\u0110\u1ed9 c\u1ee9ng: ph\u00e2n bi\u1ec7t \u0111\u1ed9 c\u1ee9ng v\u1eefng v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-3-kha-nang-chong-oxy-hoa-va-an-mon-inox-vs-nhom\">Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a v\u00e0 \u0103n m\u00f2n: inox vs nh\u00f4m<\/a><\/li>\n<li><a href=\"#toc-4-anh-huong-den-thiet-ke-gia-cong-va-chi-phi-vong-do\">\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft k\u1ebf, gia c\u00f4ng v\u00e0 chi ph\u00ed v\u00f2ng \u0111\u1eddi<\/a><\/li>\n<li><a href=\"#toc-5-nen-chon-khi-nao-huong-dan-nhanh-theo-ung-dung\">N\u00ean ch\u1ecdn khi n\u00e0o? H\u01b0\u1edbng d\u1eabn nhanh theo \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-6-thong-so-dien-hinh-theo-mac-vat-lieu-pho-bien-tai-\">Th\u00f4ng s\u1ed1 \u0111i\u1ec3n h\u00ecnh theo m\u00e1c v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-7-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-8-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-9-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Vi\u1ec7c ch\u1ecdn inox hay nh\u00f4m t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ed1i l\u01b0\u1ee3ng, \u0111\u1ed9 c\u1ee9ng v\u1eefng, tu\u1ed5i th\u1ecd ch\u1ed1ng \u0103n m\u00f2n v\u00e0 chi ph\u00ed v\u00f2ng \u0111\u1eddi c\u1ee7a c\u00f4ng tr\u00ecnh. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p so s\u00e1nh k\u1ef9 thu\u1eadt s\u00e2u v\u1ec1 ba ti\u00eau ch\u00ed quan tr\u1ecdng nh\u1ea5t: tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 c\u1ee9ng (bao g\u1ed3m \u0111\u1ed9 c\u1ee9ng v\u1eefng v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t), v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a\/\u0103n m\u00f2n, gi\u00fap k\u1ef9 s\u01b0 v\u00e0 ch\u1ee7 x\u01b0\u1edfng ra quy\u1ebft \u0111\u1ecbnh ch\u00ednh x\u00e1c. \u0110\u00e2y l\u00e0 m\u1ed9t ch\u1ee7 \u0111\u1ec1 m\u1ea5u ch\u1ed1t trong b\u1ee9c tranh so s\u00e1nh to\u00e0n di\u1ec7n inox v\u1edbi c\u00e1c kim lo\u1ea1i kh\u00e1c, nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp v\u00e0 \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n \u00e1p d\u1ee5ng ngay.<\/p>\n<h2 id=\"toc-0-nhung-con-so-cot-loi-can-nho\">Nh\u1eefng con s\u1ed1 c\u1ed1t l\u00f5i c\u1ea7n nh\u1edb<\/h2>\n<p>&#8211; Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (\u03c1): inox austenit ~7,9\u20138,0 g\/cm\u00b3; nh\u00f4m ~2,70 g\/cm\u00b3 \u2192 nh\u00f4m nh\u1eb9 h\u01a1n kho\u1ea3ng 65\u201367%.<br \/>\n&#8211; \u0110\u1ed9 c\u1ee9ng v\u1eefng (m\u00f4\u0111un \u0111\u00e0n h\u1ed3i E): inox ~193\u2013200 GPa; nh\u00f4m ~69\u201372 GPa \u2192 c\u00f9ng ti\u1ebft di\u1ec7n, nh\u00f4m v\u00f5ng x\u1ea5p x\u1ec9 3 l\u1ea7n inox.<br \/>\n&#8211; \u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t\/\u0111\u1ed9 b\u1ec1n:<br \/>\n  &#8211; Inox 304: Rp0.2 ~215 MPa; Rm ~520 MPa; HB ~150\u2013200.<br \/>\n  &#8211; Inox 316L: Rp0.2 ~170\u2013190 MPa; Rm ~480 MPa; HB ~150.<br \/>\n  &#8211; Nh\u00f4m 5052-H32: Rp0.2 ~193 MPa; Rm ~228 MPa; HB ~60\u201365.<br \/>\n  &#8211; Nh\u00f4m 6061-T6: Rp0.2 ~275 MPa; Rm ~310 MPa; HB ~95.<br \/>\n  &#8211; Nh\u00f4m 7075-T6: Rp0.2 ~480\u2013505 MPa; Rm ~540\u2013570 MPa; HB ~150.<br \/>\n&#8211; Ch\u1ed1ng oxy h\u00f3a\/\u0103n m\u00f2n:<br \/>\n  &#8211; Inox 304\/316 c\u00f3 l\u1edbp th\u1ee5 \u0111\u1ed9ng Cr2O3; 316 (c\u00f3 Mo) ch\u1ed1ng r\u1ed7 clorua t\u1ed1t h\u01a1n 304.<br \/>\n  &#8211; Nh\u00f4m c\u00f3 l\u1edbp Al2O3 t\u1ef1 nhi\u00ean b\u1ec1n trong kh\u00ed quy\u1ec3n, nh\u01b0ng nh\u1ea1y c\u1ea3m v\u1edbi m\u00f4i tr\u01b0\u1eddng ki\u1ec1m m\u1ea1nh v\u00e0 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a khi gh\u00e9p v\u1edbi kim lo\u1ea1i kh\u00e1c trong \u1ea9m m\u1eb7n.<\/p>\n<h2 id=\"toc-1-trong-luong-tinh-nhanh-va-vi-du-thuc-te\">Tr\u1ecdng l\u01b0\u1ee3ng: t\u00ednh nhanh v\u00e0 v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h2>\n<p>Kh\u1ed1i l\u01b0\u1ee3ng 1 m\u00e9t chi ti\u1ebft b\u1ea5t k\u1ef3 t\u00ednh theo: w = \u03c1 \u00d7 A, v\u1edbi A l\u00e0 di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n.<\/p>\n<p>V\u00ed d\u1ee5: \u1ed1ng h\u1ed9p 50\u00d750\u00d72 mm (ti\u1ebft di\u1ec7n A = 50\u00d750 \u2212 46\u00d746 = 384 mm\u00b2 = 3,84\u00d710\u207b\u2074 m\u00b2)<br \/>\n&#8211; Inox: w \u2248 8000 \u00d7 3,84\u00d710\u207b\u2074 = 3,07 kg\/m<br \/>\n&#8211; Nh\u00f4m: w \u2248 2700 \u00d7 3,84\u00d710\u207b\u2074 = 1,04 kg\/m<\/p>\n<p>K\u1ebft lu\u1eadn: \u0110\u1ed5i t\u1eeb inox sang nh\u00f4m (gi\u1eef nguy\u00ean h\u00ecnh h\u1ecdc) gi\u00fap gi\u1ea3m ~66% kh\u1ed1i l\u01b0\u1ee3ng m\u1ed7i m\u00e9t. L\u1ee3i \u00edch n\u00e0y \u0111\u1eb7c bi\u1ec7t l\u1edbn cho:<br \/>\n&#8211; K\u1ebft c\u1ea5u n\u00e2ng h\u1ea1, khung di \u0111\u1ed9ng, v\u1ecf b\u1ecdc m\u00e1y c\u1ea7n v\u1eadn chuy\u1ec3n.<br \/>\n&#8211; H\u1ec7 treo tr\u1ea7n, pano qu\u1ea3ng c\u00e1o, c\u1eeda c\u1ed5ng t\u1ef1 \u0111\u1ed9ng (gi\u1ea3m t\u1ea3i \u0111\u1ed9ng c\u01a1).<\/p>\n<p>L\u01b0u \u00fd: v\u1edbi c\u00f9ng h\u00ecnh h\u1ecdc, nh\u00f4m v\u00f5ng l\u1edbn h\u01a1n (ph\u1ea7n d\u01b0\u1edbi).<\/p>\n<h2 id=\"toc-2-do-cung-phan-biet-do-cung-vung-va-do-cung-be-mat\">\u0110\u1ed9 c\u1ee9ng: ph\u00e2n bi\u1ec7t \u0111\u1ed9 c\u1ee9ng v\u1eefng v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t<\/h2>\n<h3>\u0110\u1ed9 c\u1ee9ng v\u1eefng (stiffness) v\u00e0 \u0111\u1ed9 v\u00f5ng<\/h3>\n<p>&#8211; M\u00f4\u0111un \u0111\u00e0n h\u1ed3i E quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 v\u00f5ng: \u03b4 \u221d 1\/(E\u00b7I). V\u1edbi c\u00f9ng I (h\u00ecnh h\u1ecdc), \u03b4_nh\u00f4m \u2248 (E_inox\/E_nh\u00f4m) \u00d7 \u03b4_inox \u2248 200\/69 \u2248 2,9 l\u1ea7n.<br \/>\n&#8211; Thi\u1ebft k\u1ebf v\u1edbi nh\u00f4m th\u01b0\u1eddng ph\u1ea3i:<br \/>\n  &#8211; T\u0103ng b\u1ec1 d\u00e0y\/thay \u0111\u1ed5i ti\u1ebft di\u1ec7n (ch\u1eef I, h\u1ed9p l\u1edbn h\u01a1n) \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<br \/>\n  &#8211; T\u1eadn d\u1ee5ng g\u00e2n t\u0103ng c\u1ee9ng, m\u00e9p u\u1ed1n \u0111\u1ec3 t\u0103ng m\u00f4men qu\u00e1n t\u00ednh.<\/p>\n<h3>\u0110\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t (hardness) v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc<\/h3>\n<p>&#8211; Inox austenit (304\/316L) c\u00f3 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o cao h\u01a1n ph\u1ea7n l\u1edbn h\u1ee3p kim nh\u00f4m ki\u1ebfn tr\u00fac (5052, 6063); ngo\u1ea1i l\u1ec7: nh\u00f4m si\u00eau b\u1ec1n 7xxx (7075-T6) \u0111\u1ea1t c\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng th\u00e9p kh\u00f4ng g\u1ec9 nh\u01b0ng kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n clorua nh\u01b0 316.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng:<br \/>\n  &#8211; C\u1ea7n ch\u1ed1ng x\u01b0\u1edbc, m\u00e0i m\u00f2n nh\u1eb9, va \u0111\u1eadp: inox th\u01b0\u1eddng tr\u1ed9i h\u01a1n (HB cao h\u01a1n).<br \/>\n  &#8211; C\u1ea7n t\u1ef7 s\u1ed1 b\u1ec1n\/kh\u1ed1i l\u01b0\u1ee3ng (specific strength) t\u1ed1t: h\u1ee3p kim nh\u00f4m nhi\u1ec7t luy\u1ec7n (6061-T6, 7075-T6) r\u1ea5t c\u1ea1nh tranh.<\/p>\n<h2 id=\"toc-3-kha-nang-chong-oxy-hoa-va-an-mon-inox-vs-nhom\">Kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a v\u00e0 \u0103n m\u00f2n: inox vs nh\u00f4m<\/h2>\n<h3>C\u01a1 ch\u1ebf th\u1ee5 \u0111\u1ed9ng h\u00f3a<\/h3>\n<p>&#8211; Inox: l\u1edbp Cr2O3 t\u1ef1 t\u00e1i sinh khi c\u00f3 O2; PREN (Cr + 3,3Mo + 16N) ph\u1ea3n \u00e1nh kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7. 304 c\u00f3 PREN ~18\u201319; 316\/316L ~24\u201325 \u2192 316 kh\u00e1ng clorua t\u1ed1t h\u01a1n (Nickel Institute; Outokumpu Corrosion Handbook).<br \/>\n&#8211; Nh\u00f4m: l\u1edbp Al2O3 m\u1ecfng, b\u1ec1n trong kh\u00ed quy\u1ec3n kh\u00f4\/\u1ea9m nh\u1eb9; c\u00f3 th\u1ec3 anod h\u00f3a d\u00e0y 10\u201325 \u00b5m \u0111\u1ec3 t\u0103ng b\u1ec1n \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t (Aluminium Association).<\/p>\n<h3>M\u00f4i tr\u01b0\u1eddng clorua v\u00e0 n\u01b0\u1edbc bi\u1ec3n<\/h3>\n<p>&#8211; Inox 304: nguy c\u01a1 r\u1ed7\/\u0103n k\u1ebd trong n\u01b0\u1edbc m\u1eb7n, h\u01a1i mu\u1ed1i, b\u1ec3 b\u01a1i clo h\u00f3a. 316\/316L (c\u00f3 Mo) ph\u00f9 h\u1ee3p h\u01a1n cho ven bi\u1ec3n, h\u1ea3i s\u1ea3n, t\u00e0u thuy\u1ec1n.<br \/>\n&#8211; Nh\u00f4m 5xxx (Mg) th\u01b0\u1eddng ch\u1ecbu \u0103n m\u00f2n kh\u00ed quy\u1ec3n bi\u1ec3n t\u1ed1t, nh\u01b0ng d\u1ec5 \u0103n m\u00f2n k\u1ebd khi b\u1ecb k\u1eb9t mu\u1ed1i trong khe h\u1edf; n\u00ean tr\u00e1nh ti\u1ebfp x\u00fac k\u00e9o d\u00e0i v\u1edbi n\u01b0\u1edbc m\u1eb7n t\u00f9 \u0111\u1ecdng, \u01b0u ti\u00ean tho\u00e1t n\u01b0\u1edbc t\u1ed1t v\u00e0 anod h\u00f3a. H\u1ee3p kim 6xxx trung b\u00ecnh h\u01a1n 5xxx trong s\u01b0\u01a1ng mu\u1ed1i.<\/p>\n<h3>Ki\u1ec1m, axit v\u00e0 h\u00f3a ch\u1ea5t<\/h3>\n<p>&#8211; Nh\u00f4m b\u1ecb t\u1ea5n c\u00f4ng m\u1ea1nh b\u1edfi ki\u1ec1m (NaOH, pH cao) v\u00e0 m\u1ed9t s\u1ed1 axit v\u00f4 c\u01a1; kh\u00f4ng ph\u00f9 h\u1ee3p cho b\u1ed3n\/\u0111\u01b0\u1eddng \u1ed1ng ki\u1ec1m.<br \/>\n&#8211; Inox 304\/316 kh\u00e1ng nhi\u1ec1u axit h\u1eefu c\u01a1, m\u1ed9t s\u1ed1 axit v\u00f4 c\u01a1 lo\u00e3ng; 316 t\u1ed1t h\u01a1n v\u1edbi axit halogen nh\u1eb9. Tr\u00e1nh HCl, H2SO4 \u0111\u1eadm \u0111\u1eb7c; c\u1ea7n ch\u1ecdn m\u00e1c \u0111\u1eb7c bi\u1ec7t n\u1ebfu m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (ASM Handbook).<\/p>\n<h3>Nhi\u1ec7t \u0111\u1ed9 cao<\/h3>\n<p>&#8211; Inox 304\/316 ch\u1ed1ng \u00f4xy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u1ecf (304 ~870\u00b0C; 316 ~870\u00b0C; 310S t\u1edbi ~1100\u00b0C).<br \/>\n&#8211; Nh\u00f4m m\u1ec1m nhanh >150\u2013200\u00b0C; n\u00f3ng ch\u1ea3y ~660\u00b0C. Kh\u00f4ng ph\u00f9 h\u1ee3p l\u00e0m chi ti\u1ebft ch\u1ecbu nhi\u1ec7t cao k\u00e9o d\u00e0i.<\/p>\n<h3>\u0102n m\u00f2n \u0111i\u1ec7n h\u00f3a (galvanic)<\/h3>\n<p>&#8211; Gh\u00e9p nh\u00f4m v\u1edbi inox (\u0111\u1eb7c bi\u1ec7t 316) trong m\u00f4i tr\u01b0\u1eddng \u1ea9m m\u1eb7n c\u00f3 th\u1ec3 g\u00e2y \u0103n m\u00f2n nhanh \u1edf nh\u00f4m (anodic). Bi\u1ec7n ph\u00e1p:<br \/>\n  &#8211; C\u00e1ch \u0111i\u1ec7n b\u1eb1ng long \u0111en\/\u0111\u1ec7m nylon, s\u01a1n\/keo b\u1ecbt k\u00edn.<br \/>\n  &#8211; Gi\u1ea3m t\u1ec9 l\u1ec7 di\u1ec7n t\u00edch catot\/anot (\u0111\u1eebng d\u00f9ng b\u1ec1 m\u1eb7t inox l\u1edbn gh\u00e9p nh\u00f4m nh\u1ecf trong \u1ea9m m\u1eb7n).<br \/>\n  &#8211; D\u00f9ng bul\u00f4ng c\u00f9ng v\u1eadt li\u1ec7u ho\u1eb7c bul\u00f4ng inox v\u1edbi l\u1edbp c\u00e1ch \u0111i\u1ec7n \u0111\u1ea7y \u0111\u1ee7 (US Navy Galvanic Series, NACE).<\/p>\n<h2 id=\"toc-4-anh-huong-den-thiet-ke-gia-cong-va-chi-phi-vong-do\">\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft k\u1ebf, gia c\u00f4ng v\u00e0 chi ph\u00ed v\u00f2ng \u0111\u1eddi<\/h2>\n<p>&#8211; H\u00e0n:<br \/>\n  &#8211; Inox: TIG\/MIG v\u1edbi Ar\/He; 316L kh\u00e1ng n\u1ee9t t\u1ed1t; c\u1ea7n ki\u1ec3m so\u00e1t m\u00e0u nhi\u1ec7t, passivation sau h\u00e0n \u0111\u1ec3 ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng.<br \/>\n  &#8211; Nh\u00f4m: TIG AC\/MIG (spool gun), c\u1ea7n l\u00e0m s\u1ea1ch \u00f4x\u00edt tr\u01b0\u1edbc h\u00e0n; d\u1eabn nhi\u1ec7t cao g\u00e2y t\u1ea3n nhi\u1ec7t m\u1ea1nh, y\u00eau c\u1ea7u nhi\u1ec7t \u0111\u1ea7u v\u00e0o l\u1edbn h\u01a1n.<br \/>\n&#8211; Gia c\u00f4ng c\u01a1 kh\u00ed:<br \/>\n  &#8211; Nh\u00f4m gia c\u00f4ng nhanh, \u00edt m\u00f2n dao; inox d\u1ebbo, b\u00e1m dao, c\u1ea7n t\u1ed1c \u0111\u1ed9 c\u1eaft th\u1ea5p h\u01a1n v\u00e0 dao chuy\u00ean d\u1ee5ng.<br \/>\n&#8211; T\u1ea1o h\u00ecnh\/u\u1ed1n:<br \/>\n  &#8211; Nh\u00f4m 5xxx\/6xxx u\u1ed1n t\u1ed1t; inox austenit c\u1ea7n b\u00e1n k\u00ednh u\u1ed1n l\u1edbn h\u01a1n \u0111\u1ec3 tr\u00e1nh n\u1ee9t m\u00e9p; springback c\u1ee7a inox cao h\u01a1n.<br \/>\n&#8211; D\u1eabn nhi\u1ec7t\/gi\u00e3n n\u1edf:<br \/>\n  &#8211; Nh\u00f4m: \u03bb ~170\u2013205 W\/m\u00b7K; \u03b1 ~23\u00d710\u207b\u2076\/K \u2192 t\u1ea3n nhi\u1ec7t t\u1ed1t, gi\u00e3n n\u1edf l\u1edbn.<br \/>\n  &#8211; Inox: \u03bb ~14\u201316 W\/m\u00b7K; \u03b1 ~16\u201317\u00d710\u207b\u2076\/K \u2192 gi\u1eef nhi\u1ec7t, gi\u00e3n n\u1edf th\u1ea5p h\u01a1n.<br \/>\n&#8211; B\u1ec1 m\u1eb7t v\u00e0 ho\u00e0n thi\u1ec7n:<br \/>\n  &#8211; Inox: hairline, BA, g\u01b0\u01a1ng; c\u00f3 th\u1ec3 passivation axit nitric\/citric sau gia c\u00f4ng \u0111\u1ec3 t\u1ed1i \u01b0u \u0103n m\u00f2n.<br \/>\n  &#8211; Nh\u00f4m: anod h\u00f3a t\u0103ng c\u1ee9ng v\u00e0 b\u1ec1n m\u00e0u; s\u01a1n t\u0129nh \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn cho ki\u1ebfn tr\u00fac.<br \/>\n&#8211; Chi ph\u00ed v\u00f2ng \u0111\u1eddi:<br \/>\n  &#8211; Gi\u00e1 theo kg bi\u1ebfn \u0111\u1ed9ng th\u1ecb tr\u01b0\u1eddng (ni-ken \u1ea3nh h\u01b0\u1edfng inox; LME \u1ea3nh h\u01b0\u1edfng nh\u00f4m). Th\u00f4ng th\u01b0\u1eddng inox 304\/316 c\u00f3 gi\u00e1\/kg cao h\u01a1n nh\u00f4m 5xxx\u20136xxx, nh\u01b0ng nh\u00f4m c\u1ea7n s\u01a1n\/anod h\u00f3a \u0111\u1ecbnh k\u1ef3 t\u00f9y m\u00f4i tr\u01b0\u1eddng; inox (\u0111\u1eb7c bi\u1ec7t 316) \u00edt b\u1ea3o tr\u00ec h\u01a1n \u1edf ven bi\u1ec3n. Tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9 c\u1ee7a nh\u00f4m gi\u1ea3m chi ph\u00ed v\u1eadn chuy\u1ec3n\/l\u1eafp \u0111\u1eb7t.<\/p>\n<h2 id=\"toc-5-nen-chon-khi-nao-huong-dan-nhanh-theo-ung-dung\">N\u00ean ch\u1ecdn khi n\u00e0o? H\u01b0\u1edbng d\u1eabn nhanh theo \u1ee9ng d\u1ee5ng<\/h2>\n<p>&#8211; K\u1ebft c\u1ea5u c\u1ea7n nh\u1eb9, di \u0111\u1ed9ng, khung m\u00e1y, v\u1ecf t\u1ee7 \u0111i\u1ec7n m\u1ecfng, t\u1ea3n nhi\u1ec7t: \u01b0u ti\u00ean nh\u00f4m 5052\/6061; c\u00e2n nh\u1eafc t\u0103ng ti\u1ebft di\u1ec7n \u0111\u1ec3 \u0111\u1ee7 c\u1ee9ng.<br \/>\n&#8211; Lan can, tay v\u1ecbn, h\u1ea1ng m\u1ee5c ven bi\u1ec3n\/h\u01a1i mu\u1ed1i, b\u1ed3n\/ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, m\u00f4i tr\u01b0\u1eddng \u1ea9m r\u1eeda th\u01b0\u1eddng xuy\u00ean: \u01b0u ti\u00ean inox 316\/316L.<br \/>\n&#8211; N\u1ed9i th\u1ea5t, trang tr\u00ed ch\u1ed1ng x\u01b0\u1edbc, thang m\u00e1ng c\u00e1p trong nh\u00e0 kh\u00f4: inox 304\/430 (430 cho m\u00f4i tr\u01b0\u1eddng kh\u00f4, chi ph\u00ed th\u1ea5p).<br \/>\n&#8211; K\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c t\u0129nh nh\u01b0ng c\u1ea7n tr\u1ecdng l\u01b0\u1ee3ng th\u1ea5p (gi\u00e0n treo, khung pano): nh\u00f4m 6061\/6063; n\u1ebfu ngo\u00e0i tr\u1eddi ven bi\u1ec3n \u2192 anod h\u00f3a d\u00e0y v\u00e0 thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc.<br \/>\n&#8211; Thi\u1ebft b\u1ecb ti\u1ebfp x\u00fac ki\u1ec1m, ch\u1ea5t t\u1ea9y r\u1eeda m\u1ea1nh: tr\u00e1nh nh\u00f4m; c\u00e2n nh\u1eafc inox th\u00edch h\u1ee3p ho\u1eb7c v\u1eadt li\u1ec7u chuy\u00ean d\u1ee5ng.<br \/>\n&#8211; Nhi\u1ec7t \u0111\u1ed9 cao, l\u00f2, \u1ed1ng kh\u00f3i: inox ch\u1ecbu nhi\u1ec7t (304\/310S) thay v\u00ec nh\u00f4m.<\/p>\n<h2 id=\"toc-6-thong-so-dien-hinh-theo-mac-vat-lieu-pho-bien-tai-\">Th\u00f4ng s\u1ed1 \u0111i\u1ec3n h\u00ecnh theo m\u00e1c v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam<\/h2>\n<p>&#8211; Inox 201: kinh t\u1ebf, ch\u1ed1ng \u0103n m\u00f2n trung b\u00ecnh; d\u00f9ng n\u1ed9i th\u1ea5t kh\u00f4.<br \/>\n&#8211; Inox 304\/304L: ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p\u2013th\u1ef1c ph\u1ea9m; Rp0.2 ~215 MPa; d\u00f9ng b\u1ebfp, b\u1ed3n, k\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi b\u00ecnh th\u01b0\u1eddng.<br \/>\n&#8211; Inox 316\/316L: c\u00f3 Mo, PREN ~24; kh\u00e1ng clorua t\u1ed1t; d\u00f9ng ven bi\u1ec3n, d\u01b0\u1ee3c\u2013th\u1ef1c ph\u1ea9m, h\u1ea3i s\u1ea3n.<br \/>\n&#8211; Inox 430 (ferit): t\u1eeb t\u00ednh, gi\u00e1 t\u1ed1t; \u0103n m\u00f2n k\u00e9m h\u01a1n 304; d\u00f9ng trong nh\u00e0 kh\u00f4.<br \/>\n&#8211; Nh\u00f4m 1050\/1100: m\u1ec1m, d\u1eabn \u0111i\u1ec7n\u2013nhi\u1ec7t t\u1ed1t; v\u1ecf b\u1ecdc, trang tr\u00ed.<br \/>\n&#8211; Nh\u00f4m 5052-H32: ch\u1ed1ng \u0103n m\u00f2n bi\u1ec3n t\u1ed1t, u\u1ed1n t\u1ed1t; v\u1ecf t\u00e0u thuy\u1ec1n nh\u1eb9, th\u00f9ng b\u1ec3 m\u1ecfng.<br \/>\n&#8211; Nh\u00f4m 6061-T6: c\u00e2n b\u1eb1ng b\u1ec1n\u2013gia c\u00f4ng; khung k\u1ebft c\u1ea5u, jig\u2013fixture.<br \/>\n&#8211; Nh\u00f4m 6063-T5\/T6: \u0111\u00f9n ki\u1ebfn tr\u00fac, b\u1ec1 m\u1eb7t \u0111\u1eb9p; c\u1eeda nh\u00f4m k\u00ednh, profile.<br \/>\n&#8211; Nh\u00f4m 7075-T6: si\u00eau b\u1ec1n, gia c\u00f4ng ch\u00ednh x\u00e1c; kh\u00f4ng t\u1ed1i \u01b0u cho m\u00f4i tr\u01b0\u1eddng m\u1eb7n n\u1ebfu kh\u00f4ng b\u1ea3o v\u1ec7 b\u1ec1 m\u1eb7t.<\/p>\n<h2 id=\"toc-7-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; Inox c\u00f3 nh\u1eb9 h\u01a1n nh\u00f4m kh\u00f4ng? Kh\u00f4ng. Nh\u00f4m nh\u1eb9 ~1\/3 inox.<br \/>\n&#8211; T\u1ea1i sao nh\u00f4m v\u00f5ng nhi\u1ec1u h\u01a1n d\u00f9 c\u00f3 th\u1ec3 \u201cb\u1ec1n\u201d t\u01b0\u01a1ng \u0111\u01b0\u01a1ng? V\u00ec m\u00f4\u0111un \u0111\u00e0n h\u1ed3i nh\u00f4m ch\u1ec9 ~1\/3 inox; c\u1ea7n t\u0103ng ti\u1ebft di\u1ec7n \u0111\u1ec3 b\u00f9 \u0111\u1ed9 c\u1ee9ng v\u1eefng.<br \/>\n&#8211; Gh\u00e9p inox v\u1edbi nh\u00f4m th\u1ebf n\u00e0o \u0111\u1ec3 kh\u00f4ng b\u1ecb \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a?<br \/>\n  &#8211; D\u00f9ng \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n, s\u01a1n b\u1ecbt k\u00edn, keo c\u00e1ch ly.<br \/>\n  &#8211; Tr\u00e1nh di\u1ec7n t\u00edch inox l\u1edbn gh\u00e9p v\u1edbi chi ti\u1ebft nh\u00f4m nh\u1ecf trong m\u00f4i tr\u01b0\u1eddng \u1ea9m.<br \/>\n  &#8211; \u01afu ti\u00ean fastener c\u00f9ng v\u1eadt li\u1ec7u ho\u1eb7c c\u00f3 l\u1edbp c\u00e1ch \u0111i\u1ec7n.<br \/>\n&#8211; Nh\u00f4m d\u00f9ng ngo\u00e0i bi\u1ec3n \u0111\u01b0\u1ee3c kh\u00f4ng? \u0110\u01b0\u1ee3c, n\u1ebfu ch\u1ecdn \u0111\u00fang m\u00e1c (th\u01b0\u1eddng 5xxx), thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc, anod h\u00f3a\/s\u01a1n b\u1ea3o v\u1ec7, v\u00e0 tr\u00e1nh gh\u00e9p kim lo\u1ea1i g\u00e2y pin \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; Ch\u1ecdn 304 hay 316 cho ven bi\u1ec3n? 316\/316L \u0111\u00e1ng tin c\u1eady h\u01a1n nh\u1edd Mo kh\u00e1ng r\u1ed7 clorua; 304 c\u00f3 th\u1ec3 b\u1ecb r\u1ed7\/\u1ed1 tr\u00e0m theo th\u1eddi gian.<\/p>\n<h2 id=\"toc-8-tai-lieu-tham-khao\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p>&#8211; Nickel Institute \u2013 Corrosion resistance of stainless steels; Alloy selection guidelines.<br \/>\n&#8211; Outokumpu Corrosion Handbook \u2013 Pitting resistance and PREN.<br \/>\n&#8211; ASM Handbook (Properties and Selection: Nonferrous Alloys and Special-Purpose Materials).<br \/>\n&#8211; Aluminium Association \u2013 Aluminum Standards and Data; Anodizing guidelines.<br \/>\n&#8211; AZoM\/MatWeb \u2013 Typical mechanical properties for 304\/316L, 5052, 6061, 6063, 7075.<br \/>\n&#8211; NACE\/US Navy \u2013 Galvanic series and design against galvanic corrosion.<\/p>\n<h2 id=\"toc-9-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; Tr\u1ecdng l\u01b0\u1ee3ng: nh\u00f4m nh\u1eb9 h\u01a1n inox ~66%, t\u1ed1i \u01b0u cho h\u1ea1ng m\u1ee5c c\u1ea7n gi\u1ea3m t\u1ea3i v\u00e0 c\u01a1 \u0111\u1ed9ng.<br \/>\n&#8211; \u0110\u1ed9 c\u1ee9ng: inox c\u1ee9ng v\u1eefng h\u01a1n ~3 l\u1ea7n; n\u1ebfu d\u00f9ng nh\u00f4m c\u1ea7n t\u0103ng ti\u1ebft di\u1ec7n \u0111\u1ec3 h\u1ea1n ch\u1ebf v\u00f5ng.<br \/>\n&#8211; Ch\u1ed1ng oxy h\u00f3a\/\u0103n m\u00f2n: inox 316 v\u01b0\u1ee3t tr\u1ed9i \u1edf clorua\/ven bi\u1ec3n; nh\u00f4m b\u1ec1n kh\u00ed quy\u1ec3n t\u1ed1t nh\u01b0ng c\u1ea7n ch\u00fa \u00fd ki\u1ec1m, khe h\u1edf v\u00e0 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; Quy\u1ebft \u0111\u1ecbnh ch\u1ecdn v\u1eadt li\u1ec7u n\u00ean d\u1ef1a tr\u00ean t\u1ed5 h\u1ee3p: y\u00eau c\u1ea7u t\u1ea3i\u2013\u0111\u1ed9 v\u00f5ng, m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, nhi\u1ec7t \u0111\u1ed9, ph\u01b0\u01a1ng \u00e1n gia c\u00f4ng\u2013b\u1ea3o tr\u00ec v\u00e0 chi ph\u00ed v\u00f2ng \u0111\u1eddi.<\/p>\n<p>C\u1ea7n h\u1ed7 tr\u1ee3 ch\u1ecdn m\u00e1c v\u1eadt li\u1ec7u, t\u1ed1i \u01b0u ti\u1ebft di\u1ec7n v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t cho d\u1ef1 \u00e1n t\u1ea1i H\u00e0 N\u1ed9i v\u00e0 mi\u1ec1n B\u1eafc? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n 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>Nh\u00f4m nh\u1eb9 ~1\/3 inox nh\u01b0ng k\u00e9m c\u1ee9ng ~3 l\u1ea7n; inox 316 v\u01b0\u1ee3t tr\u1ed9i \u1edf m\u00f4i tr\u01b0\u1eddng clorua. Ph\u00e2n t\u00edch chi ti\u1ebft tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 c\u1ee9ng, ch\u1ed1ng oxy h\u00f3a v\u00e0 c\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u.<\/p>\n","protected":false},"author":7,"featured_media":1045,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2057","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\/2057","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=2057"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2057\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1045"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}