{"id":19824,"date":"2020-05-26T01:03:11","date_gmt":"2020-05-26T01:03:11","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=19824"},"modified":"2020-05-30T08:00:05","modified_gmt":"2020-05-30T08:00:05","slug":"strength-or-toughness-attributing-to-cemented-carbide","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/suc-manh-hoac-do-dai-quy-de-xi-mang-cacbua\/","title":{"rendered":"S\u1ee9c m\u1ea1nh ho\u1eb7c \u0111\u1ed9 d\u1ebbo dai cho cacbua xi m\u0103ng"},"content":{"rendered":"
\n

Cacbua xi m\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong g\u1ea7n m\u1ed9t th\u1ebf k\u1ef7. Trong giai \u0111o\u1ea1n n\u00e0y, ch\u00fang \u0111\u00e3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn cho c\u00e1c c\u00f4ng c\u1ee5 s\u1ea3n xu\u1ea5t v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 c\u1ee9ng cao v\u00e0 \u0111\u1ed9 d\u1ebbo dai nh\u1ea5t \u0111\u1ecbnh. B\u1edfi v\u00ec kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i v\u00e0 s\u1ee9c m\u1ea1nh th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi nh\u1eefng t\u00ean kh\u00e1c nhau, ng\u01b0\u1eddi d\u00f9ng c\u1ee7a h\u1ecd \u0111\u00f4i khi nh\u1ea7m l\u1eabn h\u1ecd v\u1edbi nhau. \u0110i\u1ec1u n\u00e0y ch\u1ee9ng t\u1ecf r\u1eb1ng m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng thi\u1ebfu ki\u1ebfn th\u1ee9c \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 cacbua xi m\u0103ng.<\/p>\n\n\n\n

TRS - c\u01b0\u1eddng \u0111\u1ed9 g\u00e3y ngang<\/h2>\n\n\n\n

X\u00e1c \u0111\u1ecbnh c\u01b0\u1eddng \u0111\u1ed9 g\u00e3y ngang c\u1ee7a cacbua xi m\u0103ng: ISO 3327<\/p>\n\n\n\n

\u0110\u1ed9 b\u1ec1n c\u1ee7a cacbua xi m\u0103ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng TRS, \u0111\u00e2y l\u00e0 m\u1ed9t th\u1eed nghi\u1ec7m u\u1ed1n ba \u0111i\u1ec3m \u0111\u01a1n gi\u1ea3n. Gi\u00e1 tr\u1ecb TRS \u0111\u1ea1i di\u1ec7n cho s\u1ee9c m\u1ea1nh t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a c\u00f4ng c\u1ee5. Ki\u1ec3m tra TRS c\u0169ng l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 v\u1ec1 m\u1ee9c \u0111\u1ed9 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. Cacbua xi m\u0103ng l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u t\u01b0\u01a1ng \u0111\u1ed1i gi\u00f2n, s\u1ee9c m\u1ea1nh c\u1ee7a n\u00f3 b\u1ecb \u1ea3nh h\u01b0\u1edfng r\u1ea5t nhi\u1ec1u b\u1edfi c\u00e1c khuy\u1ebft t\u1eadt v\u00e0 khuy\u1ebft t\u1eadt v\u1ed1n c\u00f3. Do \u0111\u00f3, \u0111\u1ed9 l\u1ec7ch chu\u1ea9n CA c\u1ee7a gi\u00e1 tr\u1ecb trung b\u00ecnh TRS v\u00e0 gi\u00e1 tr\u1ecb TRS c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ec9 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a cacbua xi m\u0103ng. Gi\u00e1 tr\u1ecb TRS c\u1ee7a cacbua xi m\u0103ng c\u00f3 th\u1ec3 t\u0103ng l\u00ean b\u1eb1ng c\u00e1ch t\u0103ng h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 s\u1eed d\u1ee5ng c\u1ee1 h\u1ea1t nh\u1ecf h\u01a1n<\/p>\n\n\n\n

Theo kinh nghi\u1ec7m, \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a WC b\u1eb1ng kho\u1ea3ng m\u1ed9t n\u1eeda c\u01b0\u1eddng \u0111\u1ed9 g\u00e3y ngang.<\/p>\n\n\n\n

C\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ed9 b\u1ec1n g\u00e3y ngang c\u1ee7a c\u00e1c lo\u1ea1i cacbua xi m\u0103ng xu\u1ea5t hi\u1ec7n trong c\u00e1c b\u1ea3ng hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean c\u00e1c th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean, do \u0111\u00f3 ch\u1ec9 c\u00f3 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a c\u1ee1 m\u1eabu \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh. Nhi\u1ec1u k\u1ef9 s\u01b0 \u1ee9ng d\u1ee5ng th\u01b0\u1eddng l\u1ea5y gi\u00e1 tr\u1ecb TRS l\u00e0m gi\u00e1 tr\u1ecb c\u01b0\u1eddng \u0111\u1ed9 thi\u1ebft k\u1ebf \u1edf m\u1ed9t m\u1ee9c nh\u1ea5t \u0111\u1ecbnh v\u00e0 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh r\u1eb1ng m\u1ed9t m\u1ee9c nh\u1ea5t \u0111\u1ecbnh s\u1ebd \u0111\u00f3ng vai tr\u00f2 trong m\u1ed9t \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, hy v\u1ecdng gi\u00e1 tr\u1ecb l\u00e0 \u0111\u00fang. Trong th\u1ef1c t\u1ebf, c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y gi\u1ea3m khi t\u0103ng k\u00edch th\u01b0\u1edbc b\u1ed9 ph\u1eadn v\u00e0 gi\u00e1 tr\u1ecb c\u01b0\u1eddng \u0111\u1ed9 thi\u1ebft k\u1ebf c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn l\u1edbn h\u01a1n ph\u1ea3i d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng k\u00edch th\u01b0\u1edbc. Do \u0111\u00f3, \u0111\u1ed9 b\u1ec1n g\u00e3y l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 t\u1ed1t \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c nh\u00e0 m\u00e1y cu\u1ed1i.<\/p>\n\n\n\n

S\u1ee9c b\u1ec1n d\u1ebbo dai<\/h2>\n\n\n\n

T\u00ecm gi\u1ea3i ph\u00e1p ch\u00ednh x\u00e1c cho v\u1ea5n \u0111\u1ec1 t\u00e1c \u0111\u1ed9ng c\u00f3 th\u1ec3 r\u1ea5t ph\u1ee9c t\u1ea1p. C\u00f4ng th\u1ee9c \u1ee9ng su\u1ea5t t\u00e1c \u0111\u1ed9ng cho th\u1ea5y \u1ee9ng su\u1ea5t thay \u0111\u1ed5i tr\u1ef1c ti\u1ebfp v\u1edbi m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i, do \u0111\u00f3, cacbua xi m\u0103ng c\u00f3 m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i cao kh\u00f4ng ph\u00f9 h\u1ee3p cho t\u1ea5t c\u1ea3 c\u00e1c \u1ee9ng d\u1ee5ng t\u00e1c \u0111\u1ed9ng. Tuy nhi\u00ean, xem x\u00e9t \u0111\u1ed9 c\u1ee9ng c\u1ee7a cacbua xi m\u0103ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 lo\u1ea1i li\u00ean k\u1ebft cao h\u01a1n v\u1edbi ch\u1ea5t k\u1ebft d\u00ednh coban 25% v\u00e0 c\u1ea5u tr\u00fac h\u1ea1t th\u00f4 h\u01a1n, n\u00f3 cho th\u1ea5y \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp cao \u0111\u00e1ng ng\u1ea1c nhi\u00ean.<\/p>\n\n\n\n

\u0110\u1ed9 b\u1ec1n g\u00e3y ngang (TRS) th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u00e0 ch\u1ec9 s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp c\u1ee7a cacbua xi m\u0103ng. Trong th\u1ef1c t\u1ebf, \u0111\u1ed9 b\u1ec1n g\u00e3y l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 t\u1ed1t h\u01a1n \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp c\u1ee7a cacbua xi m\u0103ng. Nh\u01b0 th\u1ec3 hi\u1ec7n trong h\u00ecnh, \u0111\u1ed9 b\u1ec1n g\u00e3y thay \u0111\u1ed5i theo k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t k\u1ebft d\u00ednh. \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin, xem th\u1eed nghi\u1ec7m th\u1ee5t l\u00f2ng b\u00e0n tay b\u00ean d\u01b0\u1edbi.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u0110\u1ed9 d\u00ednh<\/h2>\n\n\n\n

Ch\u1ea5t k\u1ebft d\u00ednh c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c th\u01b0\u01a1ng hi\u1ec7u cacbua vonfram l\u00e0 coban. Trong m\u1ed9t c\u00f4ng c\u1ee5 quay, ch\u1ea5t k\u1ebft d\u00ednh \u0111\u01b0\u1ee3c th\u00eam d\u01b0\u1edbi d\u1ea1ng ph\u1ea7n tr\u0103m tr\u1ecdng l\u01b0\u1ee3ng, thay \u0111\u1ed5i t\u1eeb 3% \u0111\u1ebfn 15%. L\u01b0\u1ee3ng ch\u1ea5t k\u1ebft d\u00ednh l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a t\u1eebng l\u1edbp. Theo kinh nghi\u1ec7m, h\u00e0m l\u01b0\u1ee3ng coban c\u00e0ng th\u1ea5p th\u00ec v\u1eadt li\u1ec7u s\u1ebd c\u00e0ng c\u1ee9ng. Tuy nhi\u00ean, nh\u1eefng thay \u0111\u1ed5i v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 ch\u1ea5t ph\u1ee5 gia c\u00f3 th\u1ec3 l\u00e0m suy y\u1ebfu quy t\u1eafc n\u00e0y.  <\/p>\n\n\n\n

\u0110i\u1ec3m m\u1ea5u ch\u1ed1t c\u1ea7n l\u01b0u \u00fd l\u00e0 t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a coban l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng. N\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t m\u00e1y nghi\u1ec1n cu\u1ed1i coban trong m\u1ed9t tay v\u00e0 m\u1ed9t m\u00e1y nghi\u1ec1n cacbua kh\u00e1c, b\u1ea1n s\u1ebd c\u1ea3m th\u1ea5y s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 tr\u1ecdng l\u01b0\u1ee3ng. Khi ch\u00fang ta n\u00f3i \u0111\u00f3 l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng coban 10% ho\u1eb7c 12%, th\u1ef1c t\u1ebf n\u00f3 l\u00e0 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn h\u01a1n theo th\u1ec3 t\u00edch. Theo tr\u1ecdng l\u01b0\u1ee3ng, 12% c\u1ee7a coban c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh h\u01a1n 20% theo kh\u1ed1i l\u01b0\u1ee3ng. S\u1ef1 gia t\u0103ng h\u00e0m l\u01b0\u1ee3ng coban th\u01b0\u1eddng l\u00e0m t\u0103ng s\u1ee9c m\u1ea1nh g\u00e3y ngang v\u00e0 \u0111\u1ed9 d\u1ebbo dai Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 m\u00e1y si\u00eau nh\u1ecf, nh\u01b0ng b\u1ea1n s\u1ebd hy sinh m\u1ed9t s\u1ed1 \u0111\u1ed9 c\u1ee9ng<\/p>\n\n\n\n

S\u1ee9c m\u1ea1nh li\u00ean k\u1ebft<\/h2>\n\n\n\n

L\u00f5m l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n c\u1ee7a cacbua xi m\u0103ng. \u0110\u1ed9 b\u1ec1n g\u00e3y c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi y\u1ebfu t\u1ed1 c\u01b0\u1eddng \u0111\u1ed9 \u1ee9ng su\u1ea5t t\u1edbi h\u1ea1n K1C. K\u1ebft qu\u1ea3 ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n cho th\u1ea5y \u0111\u1ed9 b\u1ec1n g\u00e3y c\u1ee7a v\u1eadt li\u1ec7u t\u0103ng khi t\u0103ng h\u00e0m l\u01b0\u1ee3ng coban v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t WC.<\/p>\n\n\n\n

C\u01b0\u1eddng \u0111\u1ed9 n\u00e9n <\/h2>\n\n\n\n

T\u00e0i s\u1ea3n n\u00e0y c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ednh ch\u1ea5t quan tr\u1ecdng nh\u1ea5t c\u1ee7a cacbua xi m\u0103ng. V\u1eadt li\u1ec7u d\u1ebbo s\u1ebd m\u1edf r\u1ed9ng ho\u1eb7c m\u1edf r\u1ed9ng m\u00e0 kh\u00f4ng b\u1ecb g\u00e3y d\u01b0\u1edbi t\u1ea3i tr\u1ecdng n\u00e9n, nh\u01b0ng v\u1eadt li\u1ec7u gi\u00f2n s\u1ebd b\u1ecb h\u1ecfng, ch\u1ee7 y\u1ebfu l\u00e0 do g\u00e3y c\u1eaft thay v\u00ec n\u00e9n th\u1ef1c s\u1ef1. So v\u1edbi h\u1ea7u h\u1ebft c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c, cacbua xi m\u0103ng cho th\u1ea5y c\u01b0\u1eddng \u0111\u1ed9 n\u00e9n cao, v\u00e0 gi\u00e1 tr\u1ecb t\u0103ng khi gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t. Theo k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t k\u1ebft d\u00ednh, gi\u00e1 tr\u1ecb c\u1ee7a cacbua xi m\u0103ng th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 400k-900kpsi (7kn \/ m2)<\/p>\n\n\n\n

\u0110\u1ed9 b\u1ec1n u\u1ed1n<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u0110\u1ed9 b\u1ec1n u\u1ed1n c\u1ee7a v\u1eadt li\u1ec7u li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi t\u1ea3i. \u0110\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00f3 bi\u1ebfn d\u1ea1ng \u0111\u00e1ng k\u1ec3 nh\u01b0ng kh\u00f4ng b\u1ecb g\u00e3y, t\u1ea3i n\u0103ng su\u1ea5t (th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o \u1edf bi\u1ebfn d\u1ea1ng \/ bi\u1ebfn d\u1ea1ng 5% c\u1ee7a b\u1ec1 m\u1eb7t b\u00ean ngo\u00e0i) \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 u\u1ed1n ho\u1eb7c c\u01b0\u1eddng \u0111\u1ed9 n\u0103ng su\u1ea5t u\u1ed1n.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Cemented carbide has been used for nearly a century. During this period, they have become common materials for manufacturing tools and all applications requiring high hardness and certain toughness. Because resilience and strength often come under different names, their users sometimes mistake them for each other. This proves that people generally lack sufficient knowledge of…<\/p>","protected":false},"author":2,"featured_media":19826,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2020\/05\/timg-2.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/19824"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=19824"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/19824\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media\/19826"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=19824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=19824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=19824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}