So v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 c\u00f4ng nghi\u1ec7p, th\u00e9p kh\u00f4ng g\u1ec9 y t\u1ebf c\u00f3 y\u00eau c\u1ea7u kh\u1eaft khe h\u01a1n v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00ec \u0111\u1eb7c t\u00ednh ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 gi\u1ea3m s\u1ef1 h\u00f2a tan ion kim lo\u1ea1i v\u00e0 tr\u00e1nh \u0103n m\u00f2n c\u1ee5c b\u1ed9 nh\u01b0 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t v\u00e0 \u0103n m\u00f2n \u1ee9ng su\u1ea5t. H\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim nh\u01b0 Ni v\u00e0 Cr cao h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng th\u01b0\u1eddng (th\u01b0\u1eddng l\u00e0 gi\u1edbi h\u1ea1n tr\u00ean c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng th\u01b0\u1eddng), trong khi h\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 t\u1ea1p ch\u1ea5t nh\u01b0 S v\u00e0 P th\u1ea5p h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng th\u01b0\u1eddng. Trong nhi\u1ec1u n\u0103m, th\u00e9p kh\u00f4ng g\u1ec9 y t\u1ebf l\u00e0 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng cho c\u00e1c \u1ee9ng d\u1ee5ng ph\u1eabu thu\u1eadt, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c t\u00ecnh hu\u1ed1ng ph\u1eabu thu\u1eadt v\u00e0 ch\u0103m s\u00f3c quan tr\u1ecdng. Nguy\u00ean t\u1ed1 Ni v\u00e0 Cr c\u00f3 t\u00ednh n\u0103ng ch\u1ed1ng \u0103n m\u00f2n cao h\u01a1n, cho ph\u00e9p n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c m\u1ee5c \u0111\u00edch c\u1ea7n c\u1ea5y gh\u00e9p ch\u1ec9nh h\u00ecnh, khoang mi\u1ec7ng, thi\u1ebft b\u1ecb y t\u1ebf. Th\u00e9p kh\u00f4ng g\u1ec9, m\u1ed9t lo\u1ea1i h\u1ee3p kim Ni-Cr, mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch khi so s\u00e1nh v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng th\u01b0\u1eddng. Lo\u1ea1i h\u1ee3p kim \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u00e9p kh\u00f4ng g\u1ec9 y t\u1ebf d\u00f9ng trong d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a d\u1ee5ng c\u1ee5 v\u00e0 kh\u00f4ng c\u00f3 l\u1ed7i v\u00e0 khe h\u1edf b\u00ean trong.<\/p>\n
Nhi\u1ec1u lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch y t\u1ebf, trong \u0111\u00f3 ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 Austenitic 316 (AISI 316L), \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cth\u00e9p ph\u1eabu thu\u1eadt\u201d. AISI 301 l\u00e0 kim lo\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 s\u1ea3n xu\u1ea5t l\u00f2 xo y t\u1ebf. C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00e1c cho m\u1ee5c \u0111\u00edch y t\u1ebf bao g\u1ed3m 420, 440 v\u00e0 17-4PH. C\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 Martensitic n\u00e0y kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 Austenitic 316 nh\u01b0ng ch\u00fang c\u00f3 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n. V\u00ec v\u1eady, c\u00e2y th\u00e9p kh\u00f4ng g\u1ec9 Martensitic \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m d\u1ee5ng c\u1ee5 c\u1eaft ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng c\u1ea5y gh\u00e9p kh\u00e1c. \u0110\u1ed9 \u0111\u00e0n h\u1ed3i \u0111\u1ea1t \u0111\u01b0\u1ee3c khi gia c\u00f4ng ngu\u1ed9i nh\u01b0ng m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. Th\u00e9p kh\u00f4ng g\u1ec9 y t\u1ebf \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i nh\u1edd \u0111\u1ed9 b\u1ec1n ch\u01b0a t\u1eebng c\u00f3, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, ch\u1ee9c n\u0103ng ph\u1eabu thu\u1eadt v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng bao g\u1ed3m khung gh\u1ebf b\u1ec7nh vi\u1ec7n, n\u00f4i, t\u1ea5m cu\u1ed1i, g\u0103ng tay ph\u1eabu thu\u1eadt, c\u1ed9t IV v\u00e0 ghim. Do kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ef1c cao v\u00e0 nhu c\u1ea7u s\u1eed d\u1ee5ng n\u00f3 trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 n\u00e0y ph\u1ea3i ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt s\u1ea3n xu\u1ea5t. Lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 y t\u1ebf ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt l\u00e0 304<\/a> v\u00e0 316. Tuy nhi\u00ean, c\u00e1c h\u1ee3p kim t\u1ed1t nh\u1ea5t c\u00f3 h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n v\u00e0 Mo \u0111\u01b0\u1ee3c th\u00eam v\u00e0o nh\u01b0 th\u00e9p 316L v\u00e0 317L.<\/p>\n Th\u00e9p kh\u00f4ng g\u1ec9 304, c\u1ee5 th\u1ec3 l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 18-8, th\u00e9p kh\u00f4ng g\u1ec9 d\u00f2ng 304 c\u0169ng bao g\u1ed3m h\u00e0m l\u01b0\u1ee3ng carbon th\u1ea5p h\u01a1n 304L<\/a>, 304H d\u00f9ng cho m\u1ee5c \u0111\u00edch ch\u1ecbu nhi\u1ec7t, c\u00f3 th\u1eafc m\u1eafc inox 304 c\u00f3 d\u00f9ng \u0111\u01b0\u1ee3c cho m\u1ee5c \u0111\u00edch y t\u1ebf kh\u00f4ng? C\u00f3 m\u1ed9t th\u1ef1c t\u1ebf l\u00e0 trong th\u00e9p kh\u00f4ng g\u1ec9 1926.18% CR-8% Ni (AISI 304<\/a>) l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u c\u1ea5y gh\u00e9p ch\u1ec9nh h\u00ecnh v\u00e0 sau \u0111\u00f3 l\u00e0 trong nha khoa. M\u00e3i \u0111\u1ebfn n\u0103m 1952, th\u00e9p kh\u00f4ng g\u1ec9 AISI 316 ch\u1ee9a 2%Mo m\u1edbi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u00f2ng kh\u00e1m v\u00e0 d\u1ea7n thay th\u1ebf th\u00e9p kh\u00f4ng g\u1ec9 304. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9, v\u00e0o nh\u1eefng n\u0103m 1960, th\u00e9p kh\u00f4ng g\u1ec9 carbon c\u1ef1c th\u1ea5p AISI 316L v\u00e0 AISI 317L v\u1edbi kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc t\u1ed1t, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u0129nh v\u1ef1c y t\u1ebf. Tuy nhi\u00ean, Ni l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 nh\u1ea1y c\u1ea3m ti\u1ec1m \u1ea9n \u0111\u1ed1i v\u1edbi c\u01a1 th\u1ec3 con ng\u01b0\u1eddi. Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, nhi\u1ec1u qu\u1ed1c gia \u0111\u00e3 h\u1ea1n ch\u1ebf h\u00e0m l\u01b0\u1ee3ng Ni trong nhu y\u1ebfu ph\u1ea9m h\u00e0ng ng\u00e0y v\u00e0 v\u1eadt li\u1ec7u kim lo\u1ea1i y t\u1ebf, h\u00e0m l\u01b0\u1ee3ng Ni t\u1ed1i \u0111a cho ph\u00e9p ng\u00e0y c\u00e0ng th\u1ea5p. Ti\u00eau chu\u1ea9n 94\/27\/EC c\u1ee7a Ngh\u1ecb vi\u1ec7n Ch\u00e2u \u00c2u ban h\u00e0nh n\u0103m 1994 y\u00eau c\u1ea7u h\u00e0m l\u01b0\u1ee3ng Ni trong c\u00e1c v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c c\u1ea5y v\u00e0o c\u01a1 th\u1ec3 ng\u01b0\u1eddi (v\u1eadt li\u1ec7u c\u1ea5y gh\u00e9p, r\u0103ng gi\u1ea3 ch\u1ec9nh nha, v.v.) kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 0,105%; \u0110\u1ed1i v\u1edbi v\u1eadt li\u1ec7u kim lo\u1ea1i (trang s\u1ee9c, \u0111\u1ed3ng h\u1ed3, nh\u1eabn, v\u00f2ng tay, v.v.) ti\u1ebfp x\u00fac v\u1edbi da ng\u01b0\u1eddi trong th\u1eddi gian d\u00e0i, l\u01b0\u1ee3ng Ni t\u1ed1i \u0111a kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 015Lg\/cm2 m\u1ed7i tu\u1ea7n. Ng\u00e0y nay 304 v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u00e1c d\u1ee5ng c\u1ee5 y t\u1ebf th\u00f4ng th\u01b0\u1eddng nh\u01b0 \u1ed1ng ti\u00eam, k\u00e9o y t\u1ebf, nh\u00edp v\u00e0 lo\u1ea1t dao m\u1ed5.<\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" So v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9 c\u00f4ng nghi\u1ec7p, th\u00e9p kh\u00f4ng g\u1ec9 y t\u1ebf c\u00f3 y\u00eau c\u1ea7u kh\u1eaft khe h\u01a1n v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00ec \u0111\u1eb7c t\u00ednh ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 gi\u1ea3m s\u1ef1 h\u00f2a tan ion kim lo\u1ea1i v\u00e0 tr\u00e1nh \u0103n m\u00f2n c\u1ee5c b\u1ed9 nh\u01b0 \u0103n m\u00f2n gi\u1eefa c\u00e1c h\u1ea1t v\u00e0 \u0103n m\u00f2n \u1ee9ng su\u1ea5t. H\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim nh\u01b0 Ni v\u00e0 Cr cao h\u01a1n th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng th\u01b0\u1eddng (th\u01b0\u1eddng [\u2026]<\/p>","protected":false},"author":1,"featured_media":2263,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2262","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\/2262","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=2262"}],"version-history":[{"count":2,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2262\/revisions"}],"predecessor-version":[{"id":2265,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/posts\/2262\/revisions\/2265"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media\/2263"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/media?parent=2262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/categories?post=2262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/vi\/wp-json\/wp\/v2\/tags?post=2262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}