Th\u00e9p kh\u00f4ng g\u1ec9 Ferritic \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m m\u00e1i v\u00e0 t\u01b0\u1eddng r\u00e8m c\u1ee7a c\u00e1c t\u00f2a nh\u00e0 v\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n trong kh\u00ed quy\u1ec3n t\u1ed1t. Th\u00e9p kh\u00f4ng g\u1ec9 ferritic h\u00e0m l\u01b0\u1ee3ng crom cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c khu v\u1ef1c ven bi\u1ec3n \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 ch\u1ed1ng \u0103n m\u00f2n trong kh\u00ed quy\u1ec3n ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 molypden cao v\u00e0 \u0111\u01b0\u1ee3c b\u1ed5 sung m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf niobi v\u00e0 titan. Th\u00e9p th\u1ef1c s\u1ef1 ch\u1ee9a 22% crom v\u00e0 1,2% molypden. C\u1ea7n c\u00f3 \u0111\u1ee7 crom v\u00e0 molypden \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9. Di\u1ec7n t\u00edch r\u1ec9 s\u00e9t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 austenit lo\u1ea1i 304 v\u00e0 lo\u1ea1i 316 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3 c\u00f9ng v\u1edbi s\u1ef1 gia t\u0103ng s\u1ed1 chu k\u1ef3 ki\u1ec3m tra \u0103n m\u00f2n \u0111\u1ecbnh k\u1ef3. Ng\u01b0\u1ee3c l\u1ea1i, di\u1ec7n t\u00edch r\u1ec9 s\u00e9t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 ferit lo\u1ea1i 444 t\u0103ng nh\u1eb9 trong 600 chu k\u1ef3 th\u1eed nghi\u1ec7m \u0111\u1ea7u ti\u00ean v\u00e0 b\u00e3o h\u00f2a sau c\u00e1c th\u1eed nghi\u1ec7m d\u00e0i h\u01a1n.<\/p>\n
<\/p>\n
C\u00f4ng nghi\u1ec7p \u00f4 t\u00f4<\/strong><\/p>\n Th\u00e9p kh\u00f4ng g\u1ec9 lo\u1ea1i 409 ho\u1eb7c 410L \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t kh\u00ed th\u1ea3i c\u1ee7a xe nh\u01b0 \u1ed1ng tr\u01b0\u1edbc, \u1ed1ng trung t\u00e2m v\u00e0 b\u1ed9 gi\u1ea3m \u00e2m do kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t tuy\u1ec7t v\u1eddi, kh\u1ea3 n\u0103ng \u0111\u1ecbnh d\u1ea1ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, nhi\u1ec7t \u0111\u1ed9 thi\u1ebft k\u1ebf c\u1ee7a kh\u00ed th\u1ea3i xe c\u1ed9 \u0111\u00e3 t\u0103ng l\u00ean do t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c v\u00e0 gi\u1ea3m l\u01b0\u1ee3ng kh\u00ed \u0111\u1ed9c h\u1ea1i nh\u01b0 kh\u00ed th\u1ea3i NOx, SOx v\u00e0 hydrocarbon (HC). Tuy nhi\u00ean, nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u1ee7a cacbua crom s\u1ebd t\u1ea1o ra c\u1eb7n tr\u00ean b\u1ed9 gi\u1ea3m thanh, t\u1ee9c l\u00e0 nhi\u1ec7t \u0111\u1ed9 400 ~ 500oC s\u1ebd d\u1eabn \u0111\u1ebfn \u0103n m\u00f2n ranh gi\u1edbi h\u1ea1t. Do khu v\u1ef1c m\u1ed1i h\u00e0n \u0111\u1eb7c bi\u1ec7t nh\u1ea1y c\u1ea3m v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng \u0103n m\u00f2n li\u00ean tinh th\u1ec3 n\u00ean c\u1ea7n ph\u1ea3i n\u00e2ng cao kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Ferritic ch\u1ee9a 12% Cr. Do \u0111\u00f3, m\u1ed9t lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Ferritic m\u1edbi \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1eb1ng c\u00e1ch th\u00eam niobi v\u00e0o th\u00e9p c\u00f3 ch\u1ee9a 12% Cr. Ng\u01b0\u1eddi ta bi\u1ebft r\u1eb1ng vi\u1ec7c gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng carbon v\u00e0 nit\u01a1 trong th\u00e9p kh\u00e1 hi\u1ec7u qu\u1ea3 trong vi\u1ec7c ng\u0103n ng\u1eeba s\u1ef1 \u0103n m\u00f2n gi\u1eefa c\u00e1c tinh th\u1ec3. B\u1eb1ng c\u00e1ch n\u00e0y, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n gi\u1eefa c\u00e1c tinh th\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n h\u01a1n n\u1eefa b\u1eb1ng c\u00e1ch th\u00eam niobi v\u00e0 titan v\u00e0o th\u00e9p. Th\u00e9p kh\u00f4ng g\u1ec9 409L \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u cho \u1ed1ng x\u1ea3 c\u1ee7a \u00f4 t\u00f4 v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u00ed th\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u1edf kho\u1ea3ng 800oC. N\u00ean s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 430J1L khi nhi\u1ec7t \u0111\u1ed9 kh\u00ed th\u1ea3i x\u1ea5p x\u1ec9 900oC.<\/p>\n <\/p>\n \u0110\u1ed3 gia d\u1ee5ng v\u00e0 \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp<\/strong><\/p>\n Th\u00e9p kh\u00f4ng g\u1ec9 ferrite 400 series \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c thi\u1ebft b\u1ecb gia d\u1ee5ng v\u00e0 \u0111\u1ed3 d\u00f9ng nh\u00e0 b\u1ebfp v\u00ec t\u00ednh th\u1ea9m m\u1ef9 \u0111\u1ed9c \u0111\u00e1o, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u0111\u1ed1i v\u1edbi ch\u1ea5t t\u1ea9y r\u1eeda v\u00e0 kh\u1eed tr\u00f9ng, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t v\u00e0 t\u1eeb t\u00ednh th\u1ea5p (th\u00edch h\u1ee3p cho b\u1ebfp \u0111i\u1ec7n t\u1eeb). Th\u00e9p kh\u00f4ng g\u1ec9 Ferritic gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng \u0111\u00e1ng k\u1ec3 so v\u1edbi th\u00e9p cacbon. Th\u00e9p kh\u00f4ng g\u1ec9 Ferritic kh\u00f4ng ch\u1ee9a niken v\u00e0 \u1ed5n \u0111\u1ecbnh v\u1ec1 gi\u00e1 h\u01a1n nhi\u1ec1u so v\u1edbi th\u00e9p Austenitic, gi\u00fap nh\u00e0 s\u1ea3n xu\u1ea5t d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd chi ph\u00ed, mua b\u00e1n h\u01a1n. Vi\u1ec7c s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 ferritic r\u1ea5t r\u1ed9ng r\u00e3i, m\u1ed7i l\u1ea7n s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 ferrite s\u1ebd c\u00f3 hi\u1ec7u su\u1ea5t kh\u00e1c nhau. C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m m\u00e1y r\u1eeda ch\u00e9n, \u1ea5m \u0111i\u1ec7n, m\u00e1y gi\u1eb7t, th\u00f9ng r\u00e1c, c\u1ed1ng tho\u00e1t n\u01b0\u1edbc nh\u00e0 b\u1ebfp, l\u00f2 n\u01b0\u1edbng, thi\u1ebft b\u1ecb gas, m\u00e1y pha c\u00e0 ph\u00ea, l\u00f2 vi s\u00f3ng, b\u1ebfp gas, kho l\u1ea1nh, xe \u0111\u1ea9y nh\u00e0 h\u00e0ng.<\/p>\n <\/p>\n Th\u00e9p kh\u00f4ng g\u1ec9 Ferritic c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giao th\u00f4ng v\u1eadn t\u1ea3i v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c. B\u1edfi v\u00ec n\u00f3 c\u00f3 r\u1ea5t nhi\u1ec1u \u01b0u \u0111i\u1ec3m so v\u1edbi th\u00e9p cacbon v\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 Austenitic, n\u00ean n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o h\u00ecnh tuy\u1ec7t v\u1eddi nh\u01b0 u\u1ed1n, c\u1eaft v\u00e0 khoan khi\u1ebfn n\u00f3 c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i. B\u1edfi v\u00ec c\u00f3 nhi\u1ec1u lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 ferritic n\u00ean \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, \u0111\u1ed9 b\u1ec1n t\u1ed1t v\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p h\u01a1n, b\u1ea1n c\u1ea7n ch\u1ecdn \u0111\u00fang lo\u1ea1i \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n Th\u1ea5p C v\u00e0 N<\/td>\n C th\u1ea5p<\/td>\n C&N th\u1ea5p<\/td>\n C&N th\u1ea5p<\/td>\n <\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" Th\u00e9p kh\u00f4ng g\u1ec9 Ferrite d\u00f9ng \u0111\u1ec3 ch\u1ec9 th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 c\u1ea5u tr\u00fac ferrite tinh th\u1ec3 kh\u1ed1i 11% ~ 30%Cr. H\u00e0m l\u01b0\u1ee3ng crom cao l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3. \u01afu \u0111i\u1ec3m c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 Ferritic bao g\u1ed3m chi ph\u00ed th\u1ea5p (kh\u00f4ng c\u00f3 niken), \u0111\u1ed9 d\u1eabn t\u1eeb t\u1ed1t, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u1ee9ng su\u1ea5t tuy\u1ec7t v\u1eddi; Xu h\u01b0\u1edbng l\u00e0m vi\u1ec7c c\u1ee9ng l\u1ea1i nh\u1ecf, d\u1ec5 gia c\u00f4ng v\u00e0 c\u1eaft ngu\u1ed9i; [\u2026]<\/p>","protected":false},"author":1,"featured_media":1781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/1779","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/comments?post=1779"}],"version-history":[{"count":2,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/1779\/revisions"}],"predecessor-version":[{"id":1820,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/1779\/revisions\/1820"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media\/1781"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media?parent=1779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/categories?post=1779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/tags?post=1779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/wldstainless.com\/wp-content\/uploads\/2020\/09\/automobile.png\")
<\/p>\n\n\n
\n \u0110i\u1ec3m<\/td>\n Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/td>\n \u0110\u1eb7c \u0111i\u1ec3m<\/td>\n C\u00e1c \u1ee9ng d\u1ee5ng<\/td>\n<\/tr>\n \n 409L<\/td>\n 11,3Cr-0,17Ti<\/p>\n Ti \u0111\u01b0\u1ee3c th\u00eam v\u00e0o l\u00e0m cho n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao t\u1ed1t.<\/td>\n \u1ed0ng x\u1ea3 \u00f4 t\u00f4, b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, th\u00f9ng ch\u1ee9a v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n.<\/td>\n<\/tr>\n \n 410L<\/td>\n 13Cr<\/p>\n Gi\u1ea3m C d\u1ef1a tr\u00ean 410, c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd t\u1ed1t, ch\u1ed1ng bi\u1ebfn d\u1ea1ng h\u00e0n, ch\u1ed1ng oxy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/td>\n Ph\u1ee5 t\u00f9ng c\u01a1 kh\u00ed x\u00e2y d\u1ef1ng, \u1ed1ng x\u1ea3 \u0111\u1ed9ng c\u01a1, bu\u1ed3ng \u0111\u1ed1t n\u1ed3i h\u01a1i, \u0111\u1ea7u \u0111\u1ed1t.<\/td>\n<\/tr>\n \n 430<\/td>\n 16Cr<\/td>\n C\u00e1c lo\u1ea1i th\u00e9p ferrite \u0111i\u1ec3n h\u00ecnh, n\u00f3 c\u00f3 t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p, kh\u1ea3 n\u0103ng \u0111\u1ecbnh h\u00ecnh v\u00e0 ch\u1ed1ng oxy h\u00f3a tuy\u1ec7t v\u1eddi.<\/td>\n Thi\u1ebft b\u1ecb ch\u1ecbu nhi\u1ec7t, \u0111\u1ea7u \u0111\u1ed1t, \u0111\u1ed3 gia d\u1ee5ng, b\u1ed9 \u0111\u1ed3 \u0103n, b\u1ed3n r\u1eeda nh\u00e0 b\u1ebfp, v\u1eadt li\u1ec7u trang tr\u00ed b\u00ean ngo\u00e0i, bu l\u00f4ng, \u0111ai \u1ed1c, m\u00e0n h\u00ecnh<\/td>\n<\/tr>\n \n 430J1L<\/td>\n 18-Cr0,5Cu-Nb<\/p>\n B\u1ed5 sung Cu, Nb tr\u00ean c\u01a1 s\u1edf 430, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, d\u1ec5 \u0111\u1ecbnh h\u00ecnh, d\u1ec5 h\u00e0n v\u00e0 ch\u1ed1ng oxy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/td>\n V\u1eadt li\u1ec7u trang tr\u00ed ngo\u1ea1i th\u1ea5t x\u00e2y d\u1ef1ng, ph\u1ee5 t\u00f9ng \u00f4 t\u00f4, thi\u1ebft b\u1ecb c\u1ea5p n\u01b0\u1edbc n\u00f3ng l\u1ea1nh.<\/td>\n<\/tr>\n \n 436L<\/td>\n 18Cr-1Mo-Ti\u3001Nb\u3001Zr<\/p>\n \u0110\u00e3 th\u00eam Nb, Zr, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n tuy\u1ec7t v\u1eddi, kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 h\u00e0n t\u1ed1t.<\/td>\n M\u00e1y gi\u1eb7t, \u1ed1ng x\u1ea3 \u00f4 t\u00f4, \u0111\u1ed3 \u0111i\u1ec7n t\u1eed, N\u1ed2I n\u1ea5u \u0103n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n