{"id":2050,"date":"2026-05-23T00:35:40","date_gmt":"2026-05-22T17:35:40","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/phan-tich-chi-phi-ban-dau-va-vong-doi-cho-inox-201-304-316l\/"},"modified":"2026-05-23T00:35:40","modified_gmt":"2026-05-22T17:35:40","slug":"phan-tich-chi-phi-ban-dau-va-vong-doi-cho-inox-201-304-316l","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/phan-tich-chi-phi-ban-dau-va-vong-doi-cho-inox-201-304-316l\/","title":{"rendered":"Ph\u00e2n t\u00edch chi ph\u00ed ban \u0111\u1ea7u v\u00e0 v\u00f2ng \u0111\u1eddi cho inox 201, 304, 316L"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-khung-phuong-phap-tinh-chi-phi-vong-doi-lcc-cho-in\">Khung ph\u01b0\u01a1ng ph\u00e1p: t\u00ednh chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) cho inox<\/a><\/li>\n<li><a href=\"#toc-1-cac-yeu-to-ky-thuat-chi-phoi-lcc-theo-mac-inox\">C\u00e1c y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt chi ph\u1ed1i LCC theo m\u00e1c inox<\/a><\/li>\n<li><a href=\"#toc-2-so-sanh-dai-han-201-304-316l-theo-kich-ban-moi-tru\">So s\u00e1nh d\u00e0i h\u1ea1n 201 \u2013 304 \u2013 316L theo k\u1ecbch b\u1ea3n m\u00f4i tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-3-case-study-1-lan-can-inox-ngoai-troi-cach-bien-08-\">Case study 1: Lan can inox ngo\u00e0i tr\u1eddi c\u00e1ch bi\u1ec3n 0,8 km (15 n\u0103m, r=10%)<\/a><\/li>\n<li><a href=\"#toc-4-case-study-2-bon-che-bien-thuc-pham-co-cip-chua-ch\">Case study 2: B\u1ed3n ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m c\u00f3 CIP ch\u1ee9a chloride nh\u1eb9<\/a><\/li>\n<li><a href=\"#toc-5-checklist-du-lieu-de-tinh-nhanh-lcc-cho-du-an-inox\">Checklist d\u1eef li\u1ec7u \u0111\u1ec3 t\u00ednh nhanh LCC cho d\u1ef1 \u00e1n inox c\u1ee7a b\u1ea1n<\/a><\/li>\n<li><a href=\"#toc-6-goi-y-ky-thuat-de-keo-giam-lcc-thuc-su\">G\u1ee3i \u00fd k\u1ef9 thu\u1eadt \u0111\u1ec3 k\u00e9o gi\u1ea3m LCC th\u1ef1c s\u1ef1<\/a><\/li>\n<li><a href=\"#toc-7-nguon-tham-khao-chinh\">Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh<\/a><\/li>\n<li><a href=\"#toc-8-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>L\u1ef1a ch\u1ecdn inox kh\u00f4ng ch\u1ec9 l\u00e0 quy\u1ebft \u0111\u1ecbnh \u201cmua r\u1ebb hay mua \u0111\u1eaft\u201d \u1edf th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i. Trong \u0111a s\u1ed1 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 x\u00e2y d\u1ef1ng, chi ph\u00ed v\u00f2ng \u0111\u1eddi (Life Cycle Cost \u2013 LCC) m\u1edbi l\u00e0 bi\u1ebfn s\u1ed1 quy\u1ebft \u0111\u1ecbnh. B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch to\u00e0n di\u1ec7n b\u00e0i to\u00e1n \u0111\u1ea7u t\u01b0 d\u00e0i h\u1ea1n cho inox 201, 304 v\u00e0 316L: t\u1eeb chi ph\u00ed ban \u0111\u1ea7u (CAPEX), b\u1ea3o tr\u00ec \u2013 v\u1ec7 sinh, tu\u1ed5i th\u1ecd, r\u1ee7i ro \u0103n m\u00f2n \u0111\u1ebfn gi\u00e1 tr\u1ecb thu h\u1ed3i, k\u00e8m v\u00ed d\u1ee5 t\u00ednh NPV 15 n\u0103m s\u00e1t th\u1ef1c t\u1ebf Vi\u1ec7t Nam. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong b\u1ee9c tranh r\u1ed9ng h\u01a1n v\u1ec1 \u201cL\u1ef1a ch\u1ecdn inox theo m\u00f4i tr\u01b0\u1eddng, m\u1ee5c \u0111\u00edch v\u00e0 ng\u00e2n s\u00e1ch\u201d.<\/p>\n<h2 id=\"toc-0-khung-phuong-phap-tinh-chi-phi-vong-doi-lcc-cho-in\">Khung ph\u01b0\u01a1ng ph\u00e1p: t\u00ednh chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) cho inox<\/h2>\n<h3>C\u00e1c nh\u00f3m chi ph\u00ed c\u1ea7n \u0111\u01b0a v\u00e0o<\/h3>\n<p>&#8211; CAPEX: v\u1eadt t\u01b0 (t\u1ea5m, \u1ed1ng, ph\u1ee5 ki\u1ec7n), ch\u1ebf t\u1ea1o \u2013 l\u1eafp \u0111\u1eb7t, x\u1eed l\u00fd b\u1ec1 m\u1eb7t (\u0111\u00e1nh x\u01b0\u1edbc, \u0111i\u1ec7n h\u00f3a, passivation), nghi\u1ec7m thu.<br \/>\n&#8211; OPEX: v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3, h\u00f3a ch\u1ea5t \u2013 kh\u0103n \u2013 d\u1ee5ng c\u1ee5, b\u1ea3o tr\u00ec (\u0111\u00e1nh b\u00f3ng, x\u1eed l\u00fd tea-staining), s\u1eeda ch\u1eefa c\u1ee5c b\u1ed9, hao ph\u00ed nh\u00e2n c\u00f4ng.<br \/>\n&#8211; R\u1ee7i ro \u2013 t\u1ed5n th\u1ea5t: d\u1eebng m\u00e1y, gi\u1ea3m n\u0103ng su\u1ea5t, h\u01b0 h\u1ecfng do \u0103n m\u00f2n r\u1ed7\/kh\u1eb9t bul\u00f4ng, vi ph\u1ea1m an to\u00e0n \u2013 v\u1ec7 sinh th\u1ef1c ph\u1ea9m.<br \/>\n&#8211; Thay th\u1ebf m\u1ed9t ph\u1ea7n\/to\u00e0n b\u1ed9: t\u1ea1i c\u00e1c m\u1ed1c tu\u1ed5i th\u1ecd k\u1ef9 thu\u1eadt.<br \/>\n&#8211; Gi\u00e1 tr\u1ecb thu h\u1ed3i cu\u1ed1i v\u00f2ng \u0111\u1eddi: thu h\u1ed3i ph\u1ebf li\u1ec7u inox (gi\u1ea3m LCC).<br \/>\nKhung n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi ISO 15686-5 v\u1ec1 Life-Cycle Costing v\u00e0 h\u01b0\u1edbng d\u1eabn c\u1ee7a Nickel Institute\/ISSF cho inox.<\/p>\n<h3>C\u00f4ng th\u1ee9c v\u00e0 tham s\u1ed1 ch\u00ednh<\/h3>\n<p>&#8211; LCC (NPV) = CAPEX0 + \u03a3 OPEX_t\/(1+r)^t + \u03a3 Thay th\u1ebf_t\/(1+r)^t \u2013 \u03a3 Thu h\u1ed3i_t\/(1+r)^t<br \/>\n&#8211; r: l\u00e3i su\u1ea5t chi\u1ebft kh\u1ea5u (th\u01b0\u1eddng 8\u201312%\/n\u0103m trong d\u1ef1 \u00e1n c\u00f4ng nghi\u1ec7p VN).<br \/>\n&#8211; Chu k\u1ef3 ph\u00e2n t\u00edch: 10\u201325 n\u0103m t\u00f9y lo\u1ea1i c\u00f4ng tr\u00ecnh\/thi\u1ebft b\u1ecb.<br \/>\nKhuy\u1ebfn ngh\u1ecb: d\u00f9ng gi\u00e1 hi\u1ec7n h\u00e0nh, k\u1ecbch b\u1ea3n t\u1ed1i thi\u1ec3u \u2013 t\u1ed1i \u0111a, v\u00e0 ki\u1ec3m th\u1eed nh\u1ea1y c\u1ea3m v\u1edbi r, t\u1ea7n su\u1ea5t b\u1ea3o tr\u00ec, kho\u1ea3ng c\u00e1ch t\u1edbi bi\u1ec3n, n\u1ed3ng \u0111\u1ed9 chlorides, pH, nhi\u1ec7t \u0111\u1ed9.<\/p>\n<h2 id=\"toc-1-cac-yeu-to-ky-thuat-chi-phoi-lcc-theo-mac-inox\">C\u00e1c y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt chi ph\u1ed1i LCC theo m\u00e1c inox<\/h2>\n<h3>\u0110\u1ed9 b\u1ec1n \u0103n m\u00f2n: PREN v\u00e0 m\u00f4i tr\u01b0\u1eddng chloride<\/h3>\n<p>&#8211; Ch\u1ec9 s\u1ed1 PREN (Pitting Resistance Equivalent Number) \u01b0\u1edbc l\u01b0\u1ee3ng kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7: PREN \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N.<br \/>\n&#8211; PREN \u0111i\u1ec3n h\u00ecnh:<br \/>\n  &#8211; 201: ~16\u201318 (Mo\u22480, N th\u1ea5p) \u2013 r\u1ee7i ro r\u1ed7\/\u1ed1 tr\u00e0 \u1edf m\u00f4i tr\u01b0\u1eddng c\u00f3 mu\u1ed1i\/\u1ea9m.<br \/>\n  &#8211; 304\/L: ~18\u201319 \u2013 d\u00f9ng t\u1ed1t n\u1ed9i \u0111\u1ecba, k\u00e9m \u1edf h\u01a1i bi\u1ec3n\/h\u00f3a ch\u1ea5t chloride.<br \/>\n  &#8211; 316L: ~23\u201324 (Mo\u22482\u20132.5) \u2013 \u01b0u th\u1ebf r\u00f5 r\u1ec7t \u1edf m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n, h\u00f3a ch\u1ea5t c\u00f3 Cl-.<br \/>\nKhi PREN cao h\u01a1n, chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 nguy c\u01a1 thay th\u1ebf th\u01b0\u1eddng gi\u1ea3m, k\u00e9o LCC xu\u1ed1ng.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: Nickel Institute; EN 10088 (th\u00e0nh ph\u1ea7n) v\u00e0 h\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a Euro Inox\/ISSF.<\/p>\n<h3>B\u1ec1 m\u1eb7t, gia c\u00f4ng h\u00e0n v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a<\/h3>\n<p>&#8211; B\u1ec1 m\u1eb7t c\u00e0ng m\u1ecbn (No.4, hairline, 2B, bead blasted m\u1ecbn) th\u00ec c\u00e0ng \u00edt b\u00e1m mu\u1ed1i\/b\u1ee5i, gi\u1ea3m t\u1ea7n su\u1ea5t v\u1ec7 sinh.<br \/>\n&#8211; V\u00f9ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec7t khi h\u00e0n (HAZ) d\u1ec5 nh\u1ea1y c\u1ea3m \u0103n m\u00f2n n\u1ebfu kh\u00f4ng t\u1ea9y g\u1ec9 \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u00fang quy tr\u00ecnh (axit nitric\/citric, \u0111i\u1ec7n h\u00f3a).<br \/>\n&#8211; Sai s\u1ed1 gia c\u00f4ng (k\u1eb9t n\u01b0\u1edbc, k\u1ebd h\u1edf) l\u00e0m t\u0103ng OPEX l\u00e2u d\u00e0i v\u00ec kh\u00f3 v\u1ec7 sinh.<\/p>\n<h3>M\u00f4i tr\u01b0\u1eddng v\u00e0 t\u1ea7n su\u1ea5t v\u1ec7 sinh<\/h3>\n<p>&#8211; N\u1ed9i \u0111\u1ecba \u0111\u00f4 th\u1ecb (ISO 9223 C2\u2013C3): 3\u20136 th\u00e1ng\/l\u1ea7n.<br \/>\n&#8211; Ven bi\u1ec3n 0\u20135 km (C4\u2013C5\/CX): 1\u20132 tu\u1ea7n \u0111\u1ebfn 1 th\u00e1ng\/l\u1ea7n, t\u00f9y gi\u00f3 bi\u1ec3n \u2013 phun m\u00f9 mu\u1ed1i.<br \/>\n&#8211; Khu c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t\/ph\u00e1t th\u1ea3i Cl-: t\u1ea7n su\u1ea5t t\u01b0\u01a1ng t\u1ef1 C4\u2013C5.<br \/>\nNgu\u1ed3n: ASSDA\/Nickel Institute khuy\u1ebfn c\u00e1o v\u1ec7 sinh th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 tr\u00e1nh tea-staining trong m\u00f4i tr\u01b0\u1eddng chloride.<\/p>\n<h2 id=\"toc-2-so-sanh-dai-han-201-304-316l-theo-kich-ban-moi-tru\">So s\u00e1nh d\u00e0i h\u1ea1n 201 \u2013 304 \u2013 316L theo k\u1ecbch b\u1ea3n m\u00f4i tr\u01b0\u1eddng<\/h2>\n<h3>\u0110\u00f4 th\u1ecb n\u1ed9i \u0111\u1ecba (C2\u2013C3)<\/h3>\n<p>&#8211; 201: C\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn v\u1edbi v\u1eadt li\u1ec7u trang tr\u00ed trong nh\u00e0; ngo\u00e0i tr\u1eddi c\u1ea7n v\u1ec7 sinh \u0111\u1ec1u. R\u1ee7i ro \u1ed1 tr\u00e0 \u1edf khu c\u00f4ng nghi\u1ec7p\/\u0111\u01b0\u1eddng l\u1edbn v\u1eabn hi\u1ec7n h\u1eefu.<br \/>\n&#8211; 304: C\u00e2n b\u1eb1ng t\u1ed1t CAPEX\u2013OPEX, \u00edt r\u1ee7i ro. L\u1ef1a ch\u1ecdn \u201cchu\u1ea9n\u201d cho lan can, m\u00e1i che, b\u1ebfp c\u00f4ng nghi\u1ec7p n\u1ed9i \u0111\u1ecba.<br \/>\n&#8211; 316L: CAPEX cao h\u01a1n, nh\u01b0ng OPEX t\u1ed1i thi\u1ec3u; th\u01b0\u1eddng ch\u1ec9 c\u1ea7n khi c\u00f3 h\u00f3a ch\u1ea5t\/ch\u1ea5t t\u1ea9y ch\u1ee9a chloride ho\u1eb7c y\u00eau c\u1ea7u th\u1ea9m m\u1ef9 b\u1ec1n b\u1ec9.<\/p>\n<h3>Ven bi\u1ec3n\/h\u01a1i mu\u1ed1i (C4\u2013C5\/CX)<\/h3>\n<p>&#8211; 201: R\u1ee7i ro r\u1ed7 \u2013 \u1ed1 tr\u00e0 cao; chi ph\u00ed v\u1ec7 sinh d\u00e0y \u0111\u1eb7c, c\u00f3 th\u1ec3 ph\u1ea3i thay s\u1edbm (3\u20135 n\u0103m) \u1edf kho\u1ea3ng c\u00e1ch \u22641 km t\u1eeb bi\u1ec3n.<br \/>\n&#8211; 304: C\u1ea7n v\u1ec7 sinh th\u01b0\u1eddng xuy\u00ean, r\u1ee7i ro r\u1ed7 c\u1ee5c b\u1ed9 sau 7\u201310 n\u0103m; t\u1ed5ng LCC th\u01b0\u1eddng cao v\u00ec OPEX + thay th\u1ebf m\u1ed9t ph\u1ea7n.<br \/>\n&#8211; 316L: L\u1ef1a ch\u1ecdn chu\u1ea9n m\u1ef1c; CAPEX cao nh\u01b0ng LCC th\u01b0\u1eddng th\u1ea5p nh\u1ea5t nh\u1edd gi\u1ea3m m\u1ea1nh OPEX\/r\u1ee7i ro thay th\u1ebf. B\u1ec1 m\u1eb7t m\u1ecbn + th\u1ee5 \u0111\u1ed9ng h\u00f3a gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd >20 n\u0103m.<\/p>\n<h2 id=\"toc-3-case-study-1-lan-can-inox-ngoai-troi-cach-bien-08-\">Case study 1: Lan can inox ngo\u00e0i tr\u1eddi c\u00e1ch bi\u1ec3n 0,8 km (15 n\u0103m, r=10%)<\/h2>\n<p>Gi\u1ea3 \u0111\u1ecbnh k\u1ef9 thu\u1eadt \u2013 kinh t\u1ebf (tham kh\u1ea3o, gi\u00e1 th\u1ecb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng; li\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c b\u00e1o gi\u00e1 th\u1ef1c t\u1ebf):<br \/>\n&#8211; Quy m\u00f4: 100 m lan can (\u1ed1ng \u00d842.4\u00d71.5 mm, ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9), ho\u00e0n thi\u1ec7n hairline, c\u00f3 th\u1ee5 \u0111\u1ed9ng h\u00f3a.<br \/>\n&#8211; CAPEX l\u1eafp \u0111\u1eb7t tr\u1ecdn g\u00f3i (c\u01a1 s\u1edf 304 = 80 tri\u1ec7u VND):<br \/>\n  &#8211; 201 \u2248 0.8\u00d7304 \u2192 64 tri\u1ec7u VND<br \/>\n  &#8211; 304 \u2192 80 tri\u1ec7u VND<br \/>\n  &#8211; 316L \u2248 1.3\u00d7304 \u2192 104 tri\u1ec7u VND<br \/>\n&#8211; V\u1ec7 sinh \u0111\u1ecbnh k\u1ef3 (nh\u00e2n c\u00f4ng + h\u00f3a ch\u1ea5t + d\u1ee5ng c\u1ee5):<br \/>\n  &#8211; 201: 12 l\u1ea7n\/n\u0103m \u00d7 1.2 tri\u1ec7u = 14.4 tri\u1ec7u\/n\u0103m<br \/>\n  &#8211; 304: 6 l\u1ea7n\/n\u0103m \u00d7 1.2 tri\u1ec7u = 7.2 tri\u1ec7u\/n\u0103m<br \/>\n  &#8211; 316L: 3 l\u1ea7n\/n\u0103m \u00d7 1.2 tri\u1ec7u = 3.6 tri\u1ec7u\/n\u0103m<br \/>\n&#8211; Thay th\u1ebf do \u0103n m\u00f2n:<br \/>\n  &#8211; 201: thay 50% v\u00e0o n\u0103m 5 (32 tri\u1ec7u), thu h\u1ed3i ph\u1ebf li\u1ec7u ~20% ph\u1ea7n v\u1eadt li\u1ec7u (gi\u1ea3 \u0111\u1ecbnh v\u1eadt li\u1ec7u chi\u1ebfm 60% CAPEX ph\u1ea7n thay th\u1ebf) \u2192 thu h\u1ed3i 3.84 tri\u1ec7u, chi ph\u00ed r\u00f2ng 28.16 tri\u1ec7u n\u0103m 5<br \/>\n  &#8211; 304: thay 30% v\u00e0o n\u0103m 10 (24 tri\u1ec7u), thu h\u1ed3i t\u01b0\u01a1ng t\u1ef1 2.88 tri\u1ec7u \u2192 chi ph\u00ed r\u00f2ng 21.12 tri\u1ec7u n\u0103m 10<br \/>\n  &#8211; 316L: kh\u00f4ng thay trong 15 n\u0103m<\/p>\n<p>T\u00ednh NPV (r = 10%):<br \/>\n&#8211; H\u1ec7 s\u1ed1 hi\u1ec7n t\u1ea1i c\u1ee7a ni\u00ean kim 15 n\u0103m: 7.606<br \/>\n&#8211; PV OPEX:<br \/>\n  &#8211; 201: 14.4 \u00d7 7.606 = 109.5 tri\u1ec7u<br \/>\n  &#8211; 304: 7.2 \u00d7 7.606 = 54.75 tri\u1ec7u<br \/>\n  &#8211; 316L: 3.6 \u00d7 7.606 = 27.38 tri\u1ec7u<br \/>\n&#8211; PV thay th\u1ebf:<br \/>\n  &#8211; 201 n\u0103m 5: 28.16 \u00d7 0.6209 \u2248 17.48 tri\u1ec7u<br \/>\n  &#8211; 304 n\u0103m 10: 21.12 \u00d7 0.3855 \u2248 8.14 tri\u1ec7u<br \/>\n&#8211; LCC (NPV) 15 n\u0103m:<br \/>\n  &#8211; 201: 64 + 109.5 + 17.48 \u2248 190.98 tri\u1ec7u VND<br \/>\n  &#8211; 304: 80 + 54.75 + 8.14 \u2248 142.89 tri\u1ec7u VND<br \/>\n  &#8211; 316L: 104 + 27.38 \u2248 131.38 tri\u1ec7u VND<\/p>\n<p>K\u1ebft lu\u1eadn case 1: D\u00f9 CAPEX cao h\u01a1n, 316L c\u00f3 LCC th\u1ea5p nh\u1ea5t (ti\u1ebft ki\u1ec7m ~59 tri\u1ec7u so v\u1edbi 201 v\u00e0 ~11.5 tri\u1ec7u so v\u1edbi 304 trong 15 n\u0103m). V\u1edbi kho\u1ea3ng c\u00e1ch ~1 km t\u1eeb bi\u1ec3n, 316L th\u01b0\u1eddng \u201cr\u1ebb h\u01a1n v\u1ec1 l\u00e2u d\u00e0i\u201d.<\/p>\n<h2 id=\"toc-4-case-study-2-bon-che-bien-thuc-pham-co-cip-chua-ch\">Case study 2: B\u1ed3n ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m c\u00f3 CIP ch\u1ee9a chloride nh\u1eb9<\/h2>\n<p>B\u1ed1i c\u1ea3nh: B\u1ed3n 5 m\u00b3 l\u00e0m vi\u1ec7c 20\u201360\u00b0C, v\u1ec7 sinh b\u1eb1ng dung d\u1ecbch c\u00f3 chloride (NaCl, NaOCl n\u1ed3ng \u0111\u1ed9 th\u1ea5p). \u01afu ti\u00ean an to\u00e0n v\u1ec7 sinh th\u1ef1c ph\u1ea9m, kh\u00f4ng r\u1ed7 \u2013 kh\u00f4ng bong c\u1eb7n.<\/p>\n<p>Gi\u1ea3 \u0111\u1ecbnh:<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng th\u00e2n b\u1ed3n ~400 kg; ch\u00eanh l\u1ec7ch v\u1eadt li\u1ec7u + ph\u1ee5 tr\u1ee3 khi ch\u1ecdn 316L thay 304 \u2248 10 tri\u1ec7u VND.<br \/>\n&#8211; N\u1ebfu d\u00f9ng 304:<br \/>\n  &#8211; R\u1ee7i ro r\u1ed7 c\u1ee5c b\u1ed9 sau 1\u20133 n\u0103m t\u1ea1i m\u1ed1i h\u00e0n\/khe h\u1edf.<br \/>\n  &#8211; M\u1ed7i n\u0103m 2 l\u1ea7n d\u1eebng m\u00e1y kh\u1ea9n c\u1ea5p \u0111\u1ec3 x\u1eed l\u00fd b\u1ec1 m\u1eb7t: 2 s\u1ef1 ki\u1ec7n \u00d7 4 gi\u1edd \u00d7 1.25 tri\u1ec7u VND\/gi\u1edd chi ph\u00ed d\u1eebng m\u00e1y = 10 tri\u1ec7u VND\/n\u0103m; v\u1eadt t\u01b0 \u2013 nh\u00e2n c\u00f4ng s\u1eeda ch\u1eefa 3 tri\u1ec7u VND\/n\u0103m.<br \/>\n&#8211; N\u1ebfu d\u00f9ng 316L:<br \/>\n  &#8211; Kh\u00f4ng d\u1eebng m\u00e1y kh\u1ea9n c\u1ea5p do r\u1ed7 trong 5\u201310 n\u0103m n\u1ebfu thi\u1ebft k\u1ebf \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u00fang; ch\u1ec9 v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3 theo SOP.<\/p>\n<p>Ph\u00e2n t\u00edch \u0111\u01a1n gi\u1ea3n:<br \/>\n&#8211; Ch\u00eanh CAPEX ban \u0111\u1ea7u: +10 tri\u1ec7u (316L so v\u1edbi 304).<br \/>\n&#8211; OPEX \u2013 t\u1ed5n th\u1ea5t tr\u00e1nh \u0111\u01b0\u1ee3c: ~13 tri\u1ec7u\/n\u0103m (so v\u1edbi 304).<br \/>\n&#8211; Th\u1eddi gian ho\u00e0n v\u1ed1n ph\u1ea7n ch\u00eanh: < 1 n\u0103m.\nK\u1ebft lu\u1eadn case 2: V\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 chloride trong CIP, 316L g\u1ea7n nh\u01b0 lu\u00f4n t\u1ed1i \u01b0u t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu v\u00e0 r\u1ee7i ro an to\u00e0n th\u1ef1c ph\u1ea9m.\n\n\n\n<h2 id=\"toc-5-checklist-du-lieu-de-tinh-nhanh-lcc-cho-du-an-inox\">Checklist d\u1eef li\u1ec7u \u0111\u1ec3 t\u00ednh nhanh LCC cho d\u1ef1 \u00e1n inox c\u1ee7a b\u1ea1n<\/h2>\n<p>&#8211; M\u00f4i tr\u01b0\u1eddng: kho\u1ea3ng c\u00e1ch t\u1edbi bi\u1ec3n, n\u1ed3ng \u0111\u1ed9 chloride\/ho\u00e1 ch\u1ea5t, nhi\u1ec7t \u0111\u1ed9, \u1ea9m, b\u1ee9c x\u1ea1 UV.<br \/>\n&#8211; Y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t\/th\u1ea9m m\u1ef9: No.4\/hairline\/BA; c\u00f3 th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n kh\u00f4ng.<br \/>\n&#8211; Chu k\u1ef3 l\u00e0m s\u1ea1ch mong mu\u1ed1n v\u00e0 kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn \u0111\u1ec3 v\u1ec7 sinh.<br \/>\n&#8211; Tu\u1ed5i th\u1ecd m\u1ee5c ti\u00eau (10\/15\/25 n\u0103m), r\u00e0ng bu\u1ed9c b\u1ea3o h\u00e0nh.<br \/>\n&#8211; R\u1ee7i ro d\u1eebng m\u00e1y\/vi ph\u1ea1m ti\u00eau chu\u1ea9n (th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c, n\u01b0\u1edbc s\u1ea1ch).<br \/>\n&#8211; T\u1ef7 l\u1ec7 v\u1eadt li\u1ec7u trong CAPEX, kh\u1ea3 n\u0103ng thu h\u1ed3i ph\u1ebf li\u1ec7u.<br \/>\n&#8211; L\u00e3i su\u1ea5t chi\u1ebft kh\u1ea5u s\u1eed d\u1ee5ng trong doanh nghi\u1ec7p (8\u201312% ph\u1ed5 bi\u1ebfn t\u1ea1i VN).<\/p>\n<h2 id=\"toc-6-goi-y-ky-thuat-de-keo-giam-lcc-thuc-su\">G\u1ee3i \u00fd k\u1ef9 thu\u1eadt \u0111\u1ec3 k\u00e9o gi\u1ea3m LCC th\u1ef1c s\u1ef1<\/h2>\n<p>&#8211; Ch\u1ecdn m\u00e1c ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng: 316L cho ven bi\u1ec3n\/h\u00f3a ch\u1ea5t chloride; 304 cho n\u1ed9i \u0111\u1ecba; tr\u00e1nh 201 \u1edf C4\u2013C5\/CX.<br \/>\n&#8211; \u01afu ti\u00ean b\u1ec1 m\u1eb7t m\u1ecbn v\u00e0 thi\u1ebft k\u1ebf ch\u1ed1ng t\u1ee5 mu\u1ed1i\/n\u01b0\u1edbc; b\u1ecbt k\u00edn k\u1ebd h\u1edf, tho\u00e1t n\u01b0\u1edbc t\u1ed1t.<br \/>\n&#8211; Quy tr\u00ecnh h\u00e0n \u2013 t\u1ea9y g\u1ec9 \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a \u0111\u1ea1t chu\u1ea9n; ki\u1ec3m tra PMI, MTC theo ASTM A240.<br \/>\n&#8211; L\u1eadp SOP v\u1ec7 sinh theo m\u00f9a\/m\u1ee9c chloride; d\u00f9ng h\u00f3a ch\u1ea5t trung t\u00ednh, kh\u0103n m\u1ec1m; tr\u00e1nh c\u1ecd x\u00e1t h\u1ea1t s\u1eaft.<br \/>\n&#8211; C\u00e2n nh\u1eafc t\u0103ng m\u00e1c thay v\u00ec t\u0103ng t\u1ea7n su\u1ea5t v\u1ec7 sinh; t\u1ed5ng chi ph\u00ed th\u01b0\u1eddng th\u1ea5p h\u01a1n.<br \/>\n&#8211; Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 \u0111i\u1ec3m n\u00f3ng \u0103n m\u00f2n (khu\u1ea5t gi\u00f3, g\u1ea7n phun n\u01b0\u1edbc bi\u1ec3n, m\u1ed1i h\u00e0n).<\/p>\n<h2 id=\"toc-7-nguon-tham-khao-chinh\">Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh<\/h2>\n<p>&#8211; ISO 15686-5: Buildings and constructed assets \u2014 Service life planning \u2014 Part 5: Life-cycle costing.<br \/>\n&#8211; Nickel Institute: Stainless Steel and Corrosion; Life Cycle Costing for Stainless Steel (nickelinstitute.org).<br \/>\n&#8211; International Stainless Steel Forum (ISSF) \/ Team Stainless: Life Cycle Costing resources (worldstainless.org).<br \/>\n&#8211; Euro Inox: Stainless Steel in Architecture, Building and Construction (euro-inox.org).<br \/>\n&#8211; ASSDA: Technical FAQs on tea staining and maintenance (assda.asn.au).<br \/>\n&#8211; EN 10088: Stainless steels \u2014 Part 1: List of stainless steels (th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc).<\/p>\n<h2 id=\"toc-8-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; Chi ph\u00ed r\u1ebb nh\u1ea5t ban \u0111\u1ea7u hi\u1ebfm khi l\u00e0 r\u1ebb nh\u1ea5t d\u00e0i h\u1ea1n. \u1ede m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n ho\u1eb7c c\u00f3 chloride, 316L g\u1ea7n nh\u01b0 lu\u00f4n cho LCC th\u1ea5p h\u01a1n 201\/304 nh\u1edd gi\u1ea3m m\u1ea1nh b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf.<br \/>\n&#8211; \u1ede n\u1ed9i \u0111\u1ecba, 304 c\u00e2n b\u1eb1ng CAPEX\u2013OPEX t\u1ed1t; 201 ch\u1ec9 n\u00ean d\u00f9ng c\u00f3 ki\u1ec3m so\u00e1t v\u00e0 ch\u1ea5p nh\u1eadn t\u0103ng v\u1ec7 sinh\/nguy c\u01a1 th\u1ea9m m\u1ef9.<br \/>\n&#8211; T\u00ednh LCC theo NPV 10\u201315 n\u0103m, \u0111\u01b0a \u0111\u1ea7y \u0111\u1ee7 OPEX, r\u1ee7i ro d\u1eebng m\u00e1y v\u00e0 gi\u00e1 tr\u1ecb thu h\u1ed3i, b\u1ea1n s\u1ebd c\u00f3 quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 \u201c\u0111\u00fang ngay t\u1eeb \u0111\u1ea7u\u201d.<\/p>\n<p>C\u1ea7n m\u00f4 h\u00ecnh LCC cho d\u1ef1 \u00e1n c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n m\u00e1c th\u00e9p, b\u1ec1 m\u1eb7t v\u00e0 d\u1ef1 to\u00e1n LCC t\u1ed1i \u01b0u. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh CAPEX\/OPEX, tu\u1ed5i th\u1ecd, b\u1ea3o tr\u00ec v\u00e0 NPV 15 n\u0103m cho inox 201\/304\/316L. Bi\u1ebft khi n\u00e0o 316L r\u1ebb h\u01a1n 201\/304 v\u1ec1 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu.<\/p>\n","protected":false},"author":7,"featured_media":1060,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2050","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\/2050","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=2050"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2050\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1060"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}