{"id":2156,"date":"2026-06-18T12:34:19","date_gmt":"2026-06-18T05:34:19","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/mang-xoi-inox-304-chong-ri-set-vinh-vien-cho-mai-nha-viet\/"},"modified":"2026-06-18T12:34:19","modified_gmt":"2026-06-18T05:34:19","slug":"mang-xoi-inox-304-chong-ri-set-vinh-vien-cho-mai-nha-viet","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/mang-xoi-inox-304-chong-ri-set-vinh-vien-cho-mai-nha-viet\/","title":{"rendered":"M\u00e1ng x\u1ed1i inox 304: Ch\u1ed1ng r\u1ec9 s\u00e9t v\u0129nh vi\u1ec5n cho m\u00e1i nh\u00e0 Vi\u1ec7t"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-vi-sao-inox-304-chong-ri-set-gan-nhu-vinh-vien\">V\u00ec sao inox 304 ch\u1ed1ng r\u1ec9 s\u00e9t g\u1ea7n nh\u01b0 v\u0129nh vi\u1ec5n?<\/a><\/li>\n<li><a href=\"#toc-1-so-sanh-nhanh-304-201-316-va-ton-ma-kemnhom-kem\">So s\u00e1nh nhanh: 304, 201, 316 v\u00e0 t\u00f4n m\u1ea1 k\u1ebdm\/nh\u00f4m k\u1ebdm<\/a><\/li>\n<li><a href=\"#toc-2-thong-so-vat-lieu-va-tieu-chuan-nen-ap-dung\">Th\u00f4ng s\u1ed1 v\u1eadt li\u1ec7u v\u00e0 ti\u00eau chu\u1ea9n n\u00ean \u00e1p d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-3-thiet-ke-tinh-toan-kich-thuoc-mang-xoi-inox-304\">Thi\u1ebft k\u1ebf \u2013 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc m\u00e1ng x\u1ed1i inox 304<\/a><\/li>\n<li><a href=\"#toc-4-cau-tao-kieu-dang-mang-xoi-va-phu-kien\">C\u1ea5u t\u1ea1o \u2013 ki\u1ec3u d\u00e1ng m\u00e1ng x\u1ed1i v\u00e0 ph\u1ee5 ki\u1ec7n<\/a><\/li>\n<li><a href=\"#toc-5-quy-trinh-lap-dat-chuan-cho-mang-xoi-inox-304\">Quy tr\u00ecnh l\u1eafp \u0111\u1eb7t chu\u1ea9n cho m\u00e1ng x\u1ed1i inox 304<\/a><\/li>\n<li><a href=\"#toc-6-loi-thuong-gap-va-cach-tranh\">L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-7-bao-tri-de-dat-tuoi-tho-3050-nam\">B\u1ea3o tr\u00ec \u0111\u1ec3 \u0111\u1ea1t tu\u1ed5i th\u1ecd 30\u201350 n\u0103m<\/a><\/li>\n<li><a href=\"#toc-8-chi-phi-va-hieu-qua-vong-doi\">Chi ph\u00ed v\u00e0 hi\u1ec7u qu\u1ea3 v\u00f2ng \u0111\u1eddi<\/a><\/li>\n<li><a href=\"#toc-9-ung-dung-thuc-te-tai-ha-noi\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf t\u1ea1i H\u00e0 N\u1ed9i<\/a><\/li>\n<li><a href=\"#toc-10-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/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>M\u00e1ng x\u1ed1i inox 304 \u0111ang tr\u1edf th\u00e0nh chu\u1ea9n l\u1ef1a ch\u1ecdn cho m\u00e1i nh\u00e0 v\u00e0 nh\u00e0 x\u01b0\u1edfng t\u1ea1i Vi\u1ec7t Nam nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ec9 s\u00e9t g\u1ea7n nh\u01b0 v\u0129nh vi\u1ec5n trong m\u00f4i tr\u01b0\u1eddng \u0111\u00f4 th\u1ecb, m\u01b0a axit nh\u1eb9 v\u00e0 kh\u00ed h\u1eadu \u1ea9m. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p m\u1ed9t h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 t\u1eeb v\u1eadt li\u1ec7u, k\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf \u2013 thi c\u00f4ng \u0111\u1ebfn chi ph\u00ed v\u00f2ng \u0111\u1eddi, \u0111\u1ec3 b\u1ea1n ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang ngay t\u1eeb \u0111\u1ea7u.<\/p>\n<h2 id=\"toc-0-vi-sao-inox-304-chong-ri-set-gan-nhu-vinh-vien\">V\u00ec sao inox 304 ch\u1ed1ng r\u1ec9 s\u00e9t g\u1ea7n nh\u01b0 v\u0129nh vi\u1ec5n?<\/h2>\n<p>&#8211; Th\u00e0nh ph\u1ea7n v\u00e0 c\u01a1 ch\u1ebf t\u1ef1 b\u1ea3o v\u1ec7: Inox 304 (18% Cr, 8% Ni) h\u00ecnh th\u00e0nh l\u1edbp m\u00e0ng th\u1ee5 \u0111\u1ed9ng gi\u00e0u Cr2O3 ch\u1ec9 v\u00e0i nanomet tr\u00ean b\u1ec1 m\u1eb7t. L\u1edbp n\u00e0y t\u1ef1 t\u00e1i t\u1ea1o khi b\u1ecb tr\u1ea7y x\u01b0\u1edbc nh\u1edd oxy trong kh\u00f4ng kh\u00ed\/\u0111\u1ed9 \u1ea9m, ng\u0103n oxy h\u00f3a ti\u1ebfp di\u1ec5n.<br \/>\n&#8211; \u0110\u1ed9 b\u1ec1n trong kh\u00ed quy\u1ec3n: 304 ch\u1ecbu t\u1ed1t m\u01b0a axit nh\u1eb9 (pH > 4), s\u01b0\u01a1ng mu\u1ed1i n\u1ed9i \u0111\u1ecba, SOx\/NOx \u0111\u00f4 th\u1ecb. \u1ede H\u00e0 N\u1ed9i, 304 th\u01b0\u1eddng \u0111\u1ea1t tu\u1ed5i th\u1ecd 30\u201350 n\u0103m cho k\u1ebft c\u1ea5u m\u00e1i v\u00e0 m\u00e1ng x\u1ed1i n\u1ebfu l\u1eafp \u0111\u1eb7t, v\u1ec7 sinh \u0111\u00fang.<br \/>\n&#8211; H\u1ea1n ch\u1ebf c\u1ea7n l\u01b0u \u00fd: 304 kh\u00f4ng c\u00f3 molypden (Mo), n\u00ean kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n k\u1ebd (pitting) b\u1edfi ion clorua th\u1ea5p h\u01a1n 316. \u1ede v\u00f9ng ven bi\u1ec3n (\u2264 5 km b\u1edd bi\u1ec3n h\u1edf) ho\u1eb7c m\u00f4i tr\u01b0\u1eddng clo \u0111\u1eadm \u0111\u1eb7c, c\u00e2n nh\u1eafc 316.<\/p>\n<p>Ngu\u1ed3n k\u1ef9 thu\u1eadt: ASTM A240\/A240M (th\u00e0nh ph\u1ea7n \u2013 c\u01a1 t\u00ednh), Nickel Institute &#038; Euro Inox (h\u01b0\u1edbng d\u1eabn \u0103n m\u00f2n kh\u00ed quy\u1ec3n), SSINA.<\/p>\n<h2 id=\"toc-1-so-sanh-nhanh-304-201-316-va-ton-ma-kemnhom-kem\">So s\u00e1nh nhanh: 304, 201, 316 v\u00e0 t\u00f4n m\u1ea1 k\u1ebdm\/nh\u00f4m k\u1ebdm<\/h2>\n<p>&#8211; Inox 304: C\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa gi\u00e1 \u2013 \u0111\u1ed9 b\u1ec1n \u0103n m\u00f2n. L\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n cho \u0111\u00f4 th\u1ecb, n\u1ed9i \u0111\u1ed3ng, khu c\u00f4ng nghi\u1ec7p nh\u1eb9.<br \/>\n&#8211; Inox 201: H\u00e0m l\u01b0\u1ee3ng Ni th\u1ea5p, Mn cao h\u01a1n. Gi\u00e1 r\u1ebb h\u01a1n nh\u01b0ng k\u00e9m b\u1ec1n r\u1ec9 trong m\u01b0a axit\/chloride; d\u1ec5 \u1ed1 v\u00e0ng, r\u1ed7 sau 1\u20133 m\u00f9a m\u01b0a \u1edf \u0111\u00f4 th\u1ecb \u1ea9m. Kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho m\u00e1ng x\u1ed1i l\u00e2u d\u00e0i.<br \/>\n&#8211; Inox 316: B\u1ed5 sung ~2% Mo, t\u0103ng m\u1ea1nh ch\u1ed1ng pitting\/crevice \u1edf m\u00f4i tr\u01b0\u1eddng clorua. N\u00ean d\u00f9ng cho c\u00f4ng tr\u00ecnh ven bi\u1ec3n, b\u1ec3 b\u01a1i, c\u01a1 s\u1edf ch\u1ebf bi\u1ebfn th\u1ee7y s\u1ea3n.<br \/>\n&#8211; T\u00f4n m\u1ea1 k\u1ebdm\/nh\u00f4m k\u1ebdm: Chi ph\u00ed \u0111\u1ea7u t\u01b0 th\u1ea5p, nh\u01b0ng tu\u1ed5i th\u1ecd 3\u20137 n\u0103m trong \u0111i\u1ec1u ki\u1ec7n \u1ea9m b\u1ea9n; l\u1edbp m\u1ea1 suy gi\u1ea3m nhanh \u1edf nh\u1eefng \u0111i\u1ec3m c\u1eaft, m\u00e9p, v\u00edt. T\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi cao do thay th\u1ebf \u0111\u1ecbnh k\u1ef3.<\/p>\n<h2 id=\"toc-2-thong-so-vat-lieu-va-tieu-chuan-nen-ap-dung\">Th\u00f4ng s\u1ed1 v\u1eadt li\u1ec7u v\u00e0 ti\u00eau chu\u1ea9n n\u00ean \u00e1p d\u1ee5ng<\/h2>\n<p>&#8211; Ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u: ASTM A240\/A240M (th\u00e9p kh\u00f4ng g\u1ec9 d\u1ea1ng t\u1ea5m\/cu\u1ed9n), EN 10088, JIS G4304\/4305.<br \/>\n&#8211; Th\u00e0nh ph\u1ea7n \u0111i\u1ec3n h\u00ecnh 304: C \u2264 0,08%; Cr 18\u201320%; Ni 8\u201310.5%; Mo \u2248 0; N \u2264 0,10%.<br \/>\n&#8211; C\u01a1 t\u00ednh: Gi\u1edbi h\u1ea1n ch\u1ea3y \u2265 205\u2013215 MPa; b\u1ec1n k\u00e9o \u2265 515 MPa; \u0111\u1ed9 gi\u00e3n d\u00e0i \u2265 40% (theo ASTM A240 \u2013 ph\u1ee5 thu\u1ed9c chi\u1ec1u d\u00e0y).<br \/>\n&#8211; H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t: \u03b1 \u2248 17.3 \u00b5m\/m\u00b7K (20\u2013100\u00b0C) \u2013 c\u1ea7n khe co gi\u00e3n v\u1edbi chi\u1ec1u d\u00e0i l\u1edbn.<br \/>\n&#8211; B\u1ec1 m\u1eb7t: 2B (ph\u1ed5 bi\u1ebfn \u0111\u1ec3 ch\u1ea5n g\u1ea5p), No.4 x\u01b0\u1edbc (th\u1ea9m m\u1ef9), BA (b\u00f3ng). 2B cho b\u1ec1n \u2013 d\u1ec5 v\u1ec7 sinh.<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y khuy\u1ebfn ngh\u1ecb:<br \/>\n  &#8211; Nh\u00e0 \u1edf, m\u00e1i t\u00f4n d\u00e2n d\u1ee5ng: 0,5\u20130,6 mm.<br \/>\n  &#8211; Nh\u00e0 x\u01b0\u1edfng, chi\u1ec1u d\u00e0i m\u00e1ng > 12 m: 0,8\u20131,0 mm.<br \/>\n  &#8211; Khu v\u1ef1c nhi\u1ec1u va \u0111\u1eadp\/l\u01b0u l\u01b0\u1ee3ng l\u1edbn: 1,0\u20131,2 mm.<br \/>\n&#8211; M\u1ed1i h\u00e0n v\u00e0 x\u1eed l\u00fd: H\u00e0n TIG v\u1edbi que 308L, kh\u00ed Ar; t\u1ea9y m\u1ed1i h\u00e0n v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ASTM A967 (dung d\u1ecbch g\u1ed1c nitric\/citric). Tr\u00e1nh nhi\u1ec5m s\u1eaft b\u1ec1 m\u1eb7t.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: ASTM A240\/A967; Euro Inox \u201cStainless Steel in Architecture\u201d; Nickel Institute \u201cStainless Steels in Atmospheric Environments\u201d.<\/p>\n<h2 id=\"toc-3-thiet-ke-tinh-toan-kich-thuoc-mang-xoi-inox-304\">Thi\u1ebft k\u1ebf \u2013 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc m\u00e1ng x\u1ed1i inox 304<\/h2>\n<p>Thi\u1ebft k\u1ebf \u0111\u00fang l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 m\u00e1ng x\u1ed1i v\u1eadn h\u00e0nh b\u1ec1n b\u1ec9, kh\u00f4ng tr\u00e0n ng\u1eadp.<\/p>\n<h3>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh l\u01b0u l\u01b0\u1ee3ng m\u01b0a thi\u1ebft k\u1ebf<\/h3>\n<p>&#8211; D\u00f9ng ph\u01b0\u01a1ng ph\u00e1p h\u1ee3p l\u00fd (Rational Method): Q = i \u00d7 A \u00d7 C<br \/>\n  &#8211; Q: l\u01b0u l\u01b0\u1ee3ng \u0111\u1ec9nh (L\/s)<br \/>\n  &#8211; i: c\u01b0\u1eddng \u0111\u1ed9 m\u01b0a (L\/s\u00b7m\u00b2); 1 mm\/h \u2248 0,000278 L\/s\u00b7m\u00b2<br \/>\n  &#8211; A: di\u1ec7n t\u00edch m\u00e1i hi\u1ec7u d\u1ee5ng (m\u00b2) theo h\u01b0\u1edbng d\u1ed1c v\u1ec1 m\u00e1ng<br \/>\n  &#8211; C: h\u1ec7 s\u1ed1 d\u00f2ng ch\u1ea3y (0,9\u20131,0 cho m\u00e1i t\u00f4n\/kim lo\u1ea1i)<br \/>\n&#8211; G\u1ee3i \u00fd cho H\u00e0 N\u1ed9i v\u00e0 c\u00e1c t\u1ec9nh \u0111\u1ed3ng b\u1eb1ng B\u1eafc B\u1ed9: i thi\u1ebft k\u1ebf 150\u2013200 mm\/h t\u00f9y m\u1ee9c an to\u00e0n. L\u1ea5y i = 180 mm\/h \u2192 i \u2248 0,05 L\/s\u00b7m\u00b2.<br \/>\n&#8211; V\u00ed d\u1ee5: M\u00e1i 120 m\u00b2, C = 0,9 \u2192 Q = 0,05 \u00d7 120 \u00d7 0,9 = 5,4 L\/s.<\/p>\n<p>L\u01b0u \u00fd: V\u1edbi m\u00e1i ph\u1ee9c t\u1ea1p, chia l\u01b0u v\u1ef1c v\u1ec1 t\u1eebng \u1ed1ng \u0111\u1ee9ng; x\u00e9t th\u1eddi gian t\u1eadp trung v\u00e0 tuy\u1ebfn tho\u00e1t.<\/p>\n<h3>B\u01b0\u1edbc 2: Ch\u1ecdn ti\u1ebft di\u1ec7n m\u00e1ng<\/h3>\n<p>&#8211; \u0110\u1ecbnh h\u01b0\u1edbng nhanh (t\u1ed1c \u0111\u1ed9 t\u00ednh to\u00e1n v ~ 1,2\u20131,8 m\/s):<br \/>\n  &#8211; N\u1eeda tr\u00f2n D100 (b\u00e1n k\u00ednh 50 mm): di\u1ec7n t\u00edch th\u1ee7y l\u1ef1c \u2248 \u03c0D\u00b2\/8 \u2248 3.927 mm\u00b2 (0,003927 m\u00b2) \u2192 Q \u2248 1,5 \u00d7 0,003927 = 5,89 L\/s (\u0111\u1ee7 cho v\u00ed d\u1ee5 5,4 L\/s).<br \/>\n  &#8211; H\u1ed9p ch\u1eef nh\u1eadt 100\u00d775 mm: di\u1ec7n t\u00edch 7.500 mm\u00b2; d\u00f2ng ch\u1ea3y h\u1eefu hi\u1ec7u th\u1ea5p h\u01a1n do \u01b0\u1edbt c\u1ea1nh \u2013 x\u00e9t h\u1ec7 s\u1ed1 0,7\u20130,8.<br \/>\n&#8211; Khuy\u1ebfn ngh\u1ecb ch\u1ecdn \u201cd\u01b0 15\u201325%\u201d so v\u1edbi Q thi\u1ebft k\u1ebf \u0111\u1ec3 d\u1ef1 ph\u00f2ng l\u00e1 r\u00e1c\/\u0111\u1ed9 d\u1ed1c nh\u1ecf.<\/p>\n<h3>B\u01b0\u1edbc 3: B\u1ed1 tr\u00ed \u1ed1ng \u0111\u1ee9ng<\/h3>\n<p>&#8211; Chia Q \u0111\u1ec1u v\u1ec1 c\u00e1c \u1ed1ng. V\u00ed d\u1ee5 Q=5,4 L\/s \u2192 2 \u1ed1ng m\u1ed7i 2,7 L\/s.<br \/>\n&#8211; T\u00ednh \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng \u0111\u1ee9ng: Q = v \u00d7 (\u03c0D\u00b2\/4), v\u1edbi v thi\u1ebft k\u1ebf 1,5\u20132,5 m\/s.<br \/>\n  &#8211; 2,7 L\/s \u1edf v=2 m\/s \u2192 D \u2248 42 mm. Th\u1ef1c t\u1ebf d\u00f9ng D75 l\u00e0 an to\u00e0n, ch\u1ed1ng ngh\u1eb9t t\u1ed1t.<br \/>\n&#8211; Kho\u1ea3ng c\u00e1ch \u1ed1ng: 10\u201315 m\/\u1ed1ng cho m\u00e1i nh\u00e0; 8\u201312 m\/\u1ed1ng cho nh\u00e0 x\u01b0\u1edfng.<\/p>\n<h3>B\u01b0\u1edbc 4: \u0110\u1ed9 d\u1ed1c \u2013 gi\u00e1 \u0111\u1ee1 \u2013 khe co gi\u00e3n<\/h3>\n<p>&#8211; \u0110\u1ed9 d\u1ed1c m\u00e1ng: 1:300 \u0111\u1ebfn 1:500 (3,3\u20132 mm\/m). M\u00e1ng d\u00e0i > 12 m n\u00ean d\u1ed1c v\u1ec1 hai \u0111\u1ea7u, \u0111\u1eb7t 2 \u1ed1ng \u0111\u1ee9ng.<br \/>\n&#8211; Kho\u1ea3ng c\u00e1ch gi\u00e1 \u0111\u1ee1: 600\u2013800 mm; v\u00f9ng gi\u00f3 b\u00e3o\/t\u1ea3i tuy\u1ebft hi\u1ebfm g\u1eb7p \u2192 500\u2013600 mm.<br \/>\n&#8211; Co gi\u00e3n nhi\u1ec7t: \u0394L = \u03b1 \u00d7 L \u00d7 \u0394T. V\u1edbi L=15 m, \u0394T \u2248 45\u00b0C \u2192 \u0394L \u2248 11\u201312 mm. B\u1ed1 tr\u00ed m\u1ed1i n\u1ed1i tr\u01b0\u1ee3t\/khe co gi\u00e3n m\u1ed7i 12\u201315 m.<\/p>\n<h3>B\u01b0\u1edbc 5: Tr\u00e0n an to\u00e0n<\/h3>\n<p>&#8211; D\u1ef1 ph\u00f2ng tr\u00e0n tr\u01b0\u1edbc m\u00e9p m\u00e1i: \u0111\u1ee5c r\u00e3nh\/tr\u1ed5 mi\u1ec7ng tr\u00e0n, ho\u1eb7c d\u00f9ng m\u00e1ng th\u00e0nh tr\u01b0\u1edbc th\u1ea5p h\u01a1n th\u00e0nh sau 10\u201315 mm, tr\u00e1nh tr\u00e0n v\u00e0o t\u01b0\u1eddng \u2013 tr\u1ea7n.<\/p>\n<h2 id=\"toc-4-cau-tao-kieu-dang-mang-xoi-va-phu-kien\">C\u1ea5u t\u1ea1o \u2013 ki\u1ec3u d\u00e1ng m\u00e1ng x\u1ed1i v\u00e0 ph\u1ee5 ki\u1ec7n<\/h2>\n<p>&#8211; Ki\u1ec3u m\u00e1ng:<br \/>\n  &#8211; N\u1eeda tr\u00f2n (half-round): tho\u00e1t nhanh, \u00edt \u0111\u1ecdng b\u1ea9n; th\u1ea9m m\u1ef9 c\u1ed5 \u0111i\u1ec3n.<br \/>\n  &#8211; H\u1ed9p (box\/rectangular): dung t\u00edch l\u1edbn, d\u1ec5 gi\u1ea5u trong di\u1ec1m m\u00e1i.<br \/>\n  &#8211; K-style: trang tr\u00ed, th\u01b0\u1eddng cho nh\u00e0 ph\u1ed1 \u2013 bi\u1ec7t th\u1ef1.<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n inox 304 \u0111\u1ed3ng b\u1ed9: \u0111\u00e1y x\u1ea3 (outlet), c\u00fat x\u1ea3, co ch\u1eef U, \u1ed1ng \u0111\u1ee9ng D75\u2013D114, k\u1eb9p \u1ed1ng, l\u00e1 ch\u1eafn r\u00e1c\/l\u01b0\u1edbi ch\u1eafn l\u00e1, k\u1eb9p \u2013 m\u00f3c treo, n\u1eafp b\u1ecbt, n\u1ed1i tr\u01b0\u1ee3t, t\u1ea5m gom n\u01b0\u1edbc (rainhead).<br \/>\n&#8211; V\u1eadt li\u1ec7u ph\u1ee5: gio\u0103ng\/\u0111\u1ec7m EPDM ho\u1eb7c silicone trung t\u00ednh; b\u0103ng keo butyl; riv\u00ea inox 304. Tr\u00e1nh v\u00edt th\u00e9p carbon\/m\u1ea1 k\u1ebdm ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp.<\/p>\n<h2 id=\"toc-5-quy-trinh-lap-dat-chuan-cho-mang-xoi-inox-304\">Quy tr\u00ecnh l\u1eafp \u0111\u1eb7t chu\u1ea9n cho m\u00e1ng x\u1ed1i inox 304<\/h2>\n<p>1) Kh\u1ea3o s\u00e1t v\u00e0 \u0111o \u0111\u1ea1c: X\u00e1c \u0111\u1ecbnh l\u01b0u v\u1ef1c, tuy\u1ebfn tho\u00e1t, v\u1ecb tr\u00ed \u1ed1ng \u0111\u1ee9ng, \u0111\u1ed9 d\u1ed1c v\u00e0 \u0111i\u1ec3m tr\u00e0n an to\u00e0n.<br \/>\n2) Gia c\u00f4ng: Ch\u1ea5n g\u1ea5p theo b\u1ea3n v\u1ebd; ch\u1ecdn \u0111\u00e1y t\u0103ng c\u1ee9ng (g\u00e2n d\u1ecdc) cho m\u00e1ng h\u1ed9p; gia c\u00f4ng outlet \u0111\u1ed3ng ch\u1ea5t 304.<br \/>\n3) Chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t: Kh\u00f4ng d\u00f9ng \u0111\u00e1 c\u1eaft th\u00e9p carbon; l\u00e0m s\u1ea1ch d\u1ea7u m\u1ee1; che ch\u1eafn m\u00e9p c\u1eaft.<br \/>\n4) \u0110\u1eb7t n\u1eb9p \u2013 m\u00f3c treo: C\u0103n c\u1eef \u0111\u1ed9 d\u1ed1c; kho\u1ea3ng c\u00e1ch 600\u2013800 mm; neo b\u1eb1ng t\u1eafc k\u00ea th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0o b\u00ea t\u00f4ng\/g\u1ed7 th\u00e9p qua t\u1ea5m \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n.<br \/>\n5) L\u1eafp m\u00e1ng: B\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u1ea7u cao; m\u1ed1i n\u1ed1i ch\u1ed3ng 30\u201350 mm; d\u00f9ng b\u0103ng butyl + riv\u00ea 304. M\u1ed1i h\u00e0n TIG \u00e1p d\u1ee5ng \u1edf \u0111o\u1ea1n g\u00f3c \u2013 c\u1ed5 \u1ed1ng x\u1ea3; sau h\u00e0n t\u1ea9y m\u1ed1i v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a.<br \/>\n6) L\u1eafp \u1ed1ng \u0111\u1ee9ng: D\u00f9ng k\u1eb9p \u1ed1ng 304; kho\u1ea3ng c\u00e1ch k\u1eb9p 1,5\u20132 m; n\u1ed1i ch\u1ed3ng c\u00f3 gio\u0103ng.<br \/>\n7) Ki\u1ec3m tra n\u01b0\u1edbc: X\u1ea3 th\u1eed to\u00e0n tuy\u1ebfn, ki\u1ec3m tra th\u1ea5m \u2013 \u0111\u1ed9 d\u1ed1c \u2013 \u0111\u1ed9 \u1ed3n; b\u1ed5 sung mi\u1ec7ng tr\u00e0n.<br \/>\n8) Ho\u00e0n thi\u1ec7n: G\u1eafn l\u01b0\u1edbi ch\u1eafn l\u00e1; v\u1ec7 sinh b\u1ec1 m\u1eb7t b\u1eb1ng dung d\u1ecbch pH trung t\u00ednh.<\/p>\n<p>L\u01b0u \u00fd k\u1ef9 thu\u1eadt:<br \/>\n&#8211; C\u00e1ch ly \u0111i\u1ec7n h\u00f3a v\u1edbi k\u1ebdm\/nh\u00f4m: \u0111\u1eb7t \u0111\u1ec7m EPDM khi ti\u1ebfp x\u00fac m\u00e1i t\u00f4n m\u1ea1; tr\u00e1nh ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed3ng.<br \/>\n&#8211; Kh\u00f4ng d\u00f9ng silicone g\u1ed1c axit (m\u00f9i d\u1ea5m) ch\u1ee9a clorua.<br \/>\n&#8211; K\u1ebft c\u1ea5u \u00e2m t\u01b0\u1eddng ph\u1ea3i c\u00f3 l\u1edbp ch\u1ed1ng th\u1ea5m v\u00e0 khe ki\u1ec3m tra.<\/p>\n<h2 id=\"toc-6-loi-thuong-gap-va-cach-tranh\">L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch tr\u00e1nh<\/h2>\n<p>&#8211; \u0110\u1ed9 d\u1ed1c kh\u00f4ng \u0111\u1ee7 \u2192 \u0111\u1ecdng n\u01b0\u1edbc, r\u00eau b\u1ea9n: tu\u00e2n th\u1ee7 t\u1ed1i thi\u1ec3u 1:500.<br \/>\n&#8211; D\u00f9ng v\u00edt m\u1ea1 k\u1ebdm\/ph\u1ee5 ki\u1ec7n kh\u00e1c kim lo\u1ea1i \u2192 \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a: d\u00f9ng \u0111\u1ed3ng b\u1ed9 inox 304\/316 v\u00e0 \u0111\u1ec7m c\u00e1ch \u0111i\u1ec7n.<br \/>\n&#8211; H\u00e0n kh\u00f4ng t\u1ea9y m\u1ed1i \u2192 r\u1ec9 n\u00e2u t\u1ea1i m\u1ed1i h\u00e0n: t\u1ea9y \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ASTM A967.<br \/>\n&#8211; Thi\u1ebfu mi\u1ec7ng tr\u00e0n\/\u1ed1ng \u0111\u1ee9ng qu\u00e1 xa \u2192 tr\u00e0n ng\u01b0\u1ee3c v\u00e0o m\u00e1i: th\u00eam tr\u00e0n v\u00e0 r\u00fat ng\u1eafn kho\u1ea3ng c\u00e1ch \u1ed1ng.<br \/>\n&#8211; D\u00f9ng ch\u1ea5t t\u1ea9y ch\u1ee9a Clorua\/axit m\u1ea1nh \u2192 r\u1ed7 b\u1ec1 m\u1eb7t: ch\u1ec9 d\u00f9ng dung d\u1ecbch trung t\u00ednh.<\/p>\n<h2 id=\"toc-7-bao-tri-de-dat-tuoi-tho-3050-nam\">B\u1ea3o tr\u00ec \u0111\u1ec3 \u0111\u1ea1t tu\u1ed5i th\u1ecd 30\u201350 n\u0103m<\/h2>\n<p>&#8211; V\u1ec7 sinh 2 l\u1ea7n\/n\u0103m v\u00e0 sau m\u01b0a b\u00e3o l\u1edbn: lo\u1ea1i b\u1ecf l\u00e1 r\u00e1c, b\u00f9n c\u00e1t.<br \/>\n&#8211; R\u1eeda b\u1eb1ng n\u01b0\u1edbc s\u1ea1ch + x\u00e0 ph\u00f2ng nh\u1eb9 pH 6\u20138; kh\u00f4ng d\u00f9ng Javel, HCl, HBr.<br \/>\n&#8211; Ki\u1ec3m tra m\u1ed1i n\u1ed1i, gio\u0103ng, k\u1eb9p \u1ed1ng; thay th\u1ebf khi l\u00e3o h\u00f3a.<br \/>\n&#8211; \u1ede khu c\u00f4ng nghi\u1ec7p\/ven bi\u1ec3n: r\u1eeda n\u01b0\u1edbc ng\u1ecdt m\u1ed7i 1\u20132 th\u00e1ng \u0111\u1ec3 gi\u1ea3m mu\u1ed1i l\u1eafng.<\/p>\n<p>Ngu\u1ed3n: Nickel Institute \u2013 Cleaning and maintenance of stainless steel.<\/p>\n<h2 id=\"toc-8-chi-phi-va-hieu-qua-vong-doi\">Chi ph\u00ed v\u00e0 hi\u1ec7u qu\u1ea3 v\u00f2ng \u0111\u1eddi<\/h2>\n<p>&#8211; Gi\u00e1 tham kh\u1ea3o (ph\u1ee5 thu\u1ed9c \u0111\u1ed9 d\u00e0y, ti\u1ebft di\u1ec7n, kh\u1ed1i l\u01b0\u1ee3ng gia c\u00f4ng, th\u1ecb tr\u01b0\u1eddng Ni):<br \/>\n  &#8211; M\u00e1ng x\u1ed1i inox 304 d\u00e0y 0,5\u20130,6 mm: kho\u1ea3ng 250.000\u2013420.000 \u0111\/m.<br \/>\n  &#8211; D\u00e0y 0,8\u20131,0 mm: kho\u1ea3ng 420.000\u2013780.000 \u0111\/m.<br \/>\n  &#8211; \u1ed0ng \u0111\u1ee9ng D75\u2013D90: 180.000\u2013350.000 \u0111\/m.<br \/>\n&#8211; So s\u00e1nh v\u00f2ng \u0111\u1eddi 15 n\u0103m (m\u00e1i nh\u00e0 20 m m\u00e1ng):<br \/>\n  &#8211; T\u00f4n m\u1ea1 k\u1ebdm: 3 l\u1ea7n thay (chu k\u1ef3 5 n\u0103m) + b\u1ea3o tr\u00ec \u2192 t\u1ed5ng chi ph\u00ed \u2248 2,2\u20132,8 l\u1ea7n inox 304.<br \/>\n  &#8211; Inox 304: \u0111\u1ea7u t\u01b0 cao h\u01a1n ban \u0111\u1ea7u, nh\u01b0ng h\u1ea7u nh\u01b0 kh\u00f4ng ph\u1ea3i thay th\u1ebf; chi ph\u00ed b\u1ea3o tr\u00ec r\u1ea5t th\u1ea5p. ROI th\u01b0\u1eddng \u0111\u1ea1t sau 6\u20138 n\u0103m.<\/p>\n<p>L\u01b0u \u00fd: B\u00e1o gi\u00e1 ch\u00ednh x\u00e1c c\u1ea7n b\u1ea3n v\u1ebd, chi\u1ec1u d\u00e0i \u0111\u1ed1t, s\u1ed1 l\u01b0\u1ee3ng ph\u1ee5 ki\u1ec7n, \u0111i\u1ec1u ki\u1ec7n thi c\u00f4ng.<\/p>\n<h2 id=\"toc-9-ung-dung-thuc-te-tai-ha-noi\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf t\u1ea1i H\u00e0 N\u1ed9i<\/h2>\n<p>&#8211; C\u00f4ng tr\u00ecnh: x\u01b0\u1edfng c\u01a1 kh\u00ed t\u1ea1i Long Bi\u00ean, m\u00e1i t\u00f4n 1.200 m\u00b2.<br \/>\n&#8211; V\u1ea5n \u0111\u1ec1: m\u00e1ng t\u00f4n m\u1ea1 k\u1ebdm D100 r\u1ec9 th\u1ee7ng sau 3 n\u0103m, tr\u00e0n n\u01b0\u1edbc l\u00e0m \u1ed1 t\u01b0\u1eddng.<br \/>\n&#8211; Gi\u1ea3i ph\u00e1p: thay b\u1eb1ng m\u00e1ng h\u1ed9p inox 304 d\u00e0y 1,0 mm, r\u1ed9ng 150\u00d7100 mm; \u1ed1ng \u0111\u1ee9ng D90 c\u00e1ch 10 m; b\u1ed5 sung mi\u1ec7ng tr\u00e0n.<br \/>\n&#8211; K\u1ebft qu\u1ea3 sau 24 th\u00e1ng: kh\u00f4ng th\u1ea5m; chi ph\u00ed b\u1ea3o tr\u00ec gi\u1ea3m 80%; b\u1ec1 m\u1eb7t s\u1ea1ch, kh\u00f4ng \u1ed1 r\u1ec9.<\/p>\n<h2 id=\"toc-10-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; M\u00e1ng x\u1ed1i inox 304 c\u00f3 b\u1ecb \u1ed1 v\u00e0ng?<br \/>\nC\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n \u201ctr\u00e0 r\u1ec9\u201d n\u00e2u nh\u1eb9 t\u1ea1i m\u1ed1i h\u00e0n\/m\u00e9p c\u1eaft n\u1ebfu kh\u00f4ng t\u1ea9y th\u1ee5 \u0111\u1ed9ng. X\u1eed l\u00fd \u0111\u01b0\u1ee3c b\u1eb1ng dung d\u1ecbch t\u1ea9y passivation v\u00e0 v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; \u1ede khu v\u1ef1c ven bi\u1ec3n n\u00ean ch\u1ecdn 304 hay 316?<br \/>\nTrong b\u00e1n k\u00ednh 1\u20135 km b\u1edd bi\u1ec3n h\u1edf\/\u0111\u1ea3o gi\u00f3 m\u00f9a, \u01b0u ti\u00ean 316; n\u1ed9i \u0111\u00f4 ven bi\u1ec3n k\u00edn gi\u00f3 c\u00f3 th\u1ec3 d\u00f9ng 304 d\u00e0y h\u01a1n + v\u1ec7 sinh n\u01b0\u1edbc ng\u1ecdt th\u01b0\u1eddng xuy\u00ean.<br \/>\n&#8211; C\u00f3 th\u1ec3 s\u01a1n ph\u1ee7 l\u00ean inox 304 kh\u00f4ng?<br \/>\nC\u00f3, n\u1ebfu x\u1eed l\u00fd b\u1ec1 m\u1eb7t (nh\u00e1m nh\u1eb9, primer ph\u00f9 h\u1ee3p). Tuy nhi\u00ean, kh\u00f4ng c\u1ea7n thi\u1ebft v\u1ec1 ch\u1ed1ng r\u1ec9; l\u1edbp s\u01a1n ch\u1ee7 y\u1ebfu cho th\u1ea9m m\u1ef9.<br \/>\n&#8211; Kho\u1ea3ng c\u00e1ch m\u00f3c treo bao nhi\u00eau l\u00e0 h\u1ee3p l\u00fd?<br \/>\n600\u2013800 mm; v\u1edbi m\u00e1ng d\u00e0y 0,8\u20131,0 mm \u1edf khu v\u1ef1c gi\u00f3 m\u1ea1nh, gi\u1ea3m xu\u1ed1ng 500\u2013600 mm.<br \/>\n&#8211; C\u00f3 c\u1ea7n l\u01b0\u1edbi ch\u1eafn l\u00e1?<br \/>\nKhuy\u1ebfn ngh\u1ecb cho nh\u00e0 c\u00f3 nhi\u1ec1u c\u00e2y. D\u00f9ng l\u01b0\u1edbi inox 304 ho\u1eb7c h\u1ee3p kim nh\u00f4m c\u00f3 s\u01a1n t\u0129nh \u0111i\u1ec7n, c\u1ed1 \u0111\u1ecbnh b\u1eb1ng k\u1eb9p kh\u00f4ng g\u1ec9.<\/p>\n<h2 id=\"toc-11-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A240\/A240M \u2013 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip.<br \/>\n&#8211; ASTM A967\/A967M \u2013 Chemical Passivation Treatments for Stainless Steel Parts.<br \/>\n&#8211; Nickel Institute: Stainless Steels in Atmospheric Environments; Cleaning and Maintenance of Stainless Steel (nickelinstitute.org).<br \/>\n&#8211; Euro Inox: Stainless Steel in Architecture, The Mechanical Properties of Stainless Steel (euro-inox.org).<br \/>\n&#8211; SSINA \u2013 Corrosion-resistant properties of 304\/316 in architectural applications (ssina.com).<\/p>\n<h2 id=\"toc-12-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>M\u00e1ng x\u1ed1i inox 304 l\u00e0 gi\u1ea3i ph\u00e1p \u201c\u0111\u1eb7t v\u00e0 qu\u00ean\u201d cho m\u00e1i nh\u00e0 v\u00e0 nh\u00e0 x\u01b0\u1edfng n\u1ed9i \u0111\u1ecba: ch\u1ed1ng r\u1ec9 s\u00e9t g\u1ea7n nh\u01b0 v\u0129nh vi\u1ec5n, b\u1ec1n c\u01a1 h\u1ecdc, \u00edt b\u1ea3o tr\u00ec v\u00e0 t\u1ed1i \u01b0u t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi. \u0110\u1ec3 \u0111\u1ea1t tu\u1ed5i th\u1ecd 30\u201350 n\u0103m, h\u00e3y:<br \/>\n&#8211; Ch\u1ecdn \u0111\u00fang c\u1ea5p v\u1eadt li\u1ec7u (304 cho n\u1ed9i \u0111\u1ecba, 316 cho ven bi\u1ec3n), \u0111\u00fang \u0111\u1ed9 d\u00e0y.<br \/>\n&#8211; T\u00ednh to\u00e1n l\u01b0u l\u01b0\u1ee3ng theo Rational Method, ch\u1ecdn ti\u1ebft di\u1ec7n \u2013 \u1ed1ng \u0111\u1ee9ng \u0111\u1ee7 d\u01b0.<br \/>\n&#8211; Thi c\u00f4ng chu\u1ea9n: \u0111\u1ed9 d\u1ed1c, gi\u00e1 \u0111\u1ee1, m\u1ed1i h\u00e0n t\u1ea9y th\u1ee5 \u0111\u1ed9ng, ch\u1ed1ng \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; Duy tr\u00ec v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3, ki\u1ec3m tra gio\u0103ng \u2013 m\u1ed1i n\u1ed1i.<\/p>\n<p>B\u1ea1n c\u1ea7n t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc, b\u1ea3n v\u1ebd v\u00e0 d\u1ef1 to\u00e1n ch\u00ednh x\u00e1c cho c\u00f4ng tr\u00ecnh? 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.<br \/>\nHotline: 0343.417.281<br \/>\nEmail: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00ec sao m\u00e1ng x\u1ed1i inox 304 b\u1ec1n 30+ n\u0103m? H\u01b0\u1edbng d\u1eabn ch\u1ecdn \u0111\u1ed9 d\u00e0y, k\u00edch th\u01b0\u1edbc, l\u1eafp \u0111\u1eb7t, b\u1ea3o tr\u00ec, so s\u00e1nh 201\/316 v\u00e0 b\u1ea3ng gi\u00e1 tham kh\u1ea3o cho m\u00e1i nh\u00e0 Vi\u1ec7t.<\/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-2156","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\/2156","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=2156"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2156\/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=2156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}