{"id":13917,"date":"2020-03-12T08:55:52","date_gmt":"2020-03-12T08:55:52","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=13917"},"modified":"2020-05-07T00:30:57","modified_gmt":"2020-05-07T00:30:57","slug":"the-efficacy-of-carbon-content-on-wc-tic-co-cemented-carbide","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/tinh-hieu-qua-cua-ham-luong-cacbon-tren-wc-tic-co-xi-mang-cacbua\/","title":{"rendered":"Hi\u1ec7u qu\u1ea3 c\u1ee7a th\u00e0nh ph\u1ea7n carbon tr\u00ean cacbua WC-tic-\u0111\u1ed3ng"},"content":{"rendered":"
C\u00e1c cacbua xi m\u0103ng WC Co r\u1ea5t d\u1ec5 b\u1ecb oxy h\u00f3a v\u00e0 ph\u00e2n h\u1ee7y trong \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao, c\u00f3 nhi\u1ec1u v\u1ea5n \u0111\u1ec1 nh\u01b0 gi\u00f2n, d\u1ec5 g\u00e3y, qu\u00e1 tr\u00ecnh l\u00e0m m\u1ec1m v\u00e0 \u0111\u1ee9t c\u1ea1nh, vv ch\u00fang v\u1eabn kh\u00f4ng th\u00edch h\u1ee3p cho vi\u1ec7c c\u1eaft th\u00e9p t\u1ed1c \u0111\u1ed9 cao, v\u00ec v\u1eady ch\u00fang c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf l\u1edbn. WC tic co cacbua xi m\u0103ng \u0111\u01b0\u1ee3c bi\u1ebft l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1ed1ng oxy h\u00f3a v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n mi\u1ec7ng n\u00fai l\u1eeda.<\/strong><\/strong><\/p>\n\n\n\n Tuy nhi\u00ean, do tic v\u00e0 dung d\u1ecbch r\u1eafn c\u1ee7a n\u00f3 gi\u00f2n h\u01a1n nhi\u1ec1u so v\u1edbi WC n\u00ean h\u1ee3p kim n\u00e0y c\u0169ng c\u00f3 khuy\u1ebft t\u1eadt t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn, \u0111\u00f3 l\u00e0 \u0111\u1ed9 d\u1ebbo dai v\u00e0 t\u00ednh h\u00e0n c\u1ee7a h\u1ee3p kim k\u00e9m. H\u01a1n n\u1eefa, khi h\u00e0m l\u01b0\u1ee3ng TiC v\u01b0\u1ee3t qu\u00e1 18%, h\u1ee3p kim kh\u00f4ng ch\u1ec9 gi\u00f2n m\u00e0 c\u00f2n kh\u00f3 h\u00e0n. Ngo\u00e0i ra, tic kh\u00f4ng th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 cao. <\/strong><\/strong><\/p>\n\n\n\n TAC kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng oxy h\u00f3a c\u1ee7a cacbua xi m\u0103ng, m\u00e0 c\u00f2n \u1ee9c ch\u1ebf s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ea1t WC v\u00e0 tic. N\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i cacbua th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n c\u1ee7a cacbua xi m\u0103ng m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a cacbua xi m\u0103ng. TAC c\u00f3 th\u1ec3 l\u00e0m t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a cacbua xi m\u0103ng b\u1eb1ng c\u00e1ch th\u00eam TAC v\u00e0o WC tic co cacbua xi m\u0103ng Vi\u1ec7c b\u1ed5 sung TAC gi\u00fap gi\u1ea3m h\u1ec7 s\u1ed1 ma s\u00e1t, do \u0111\u00f3 l\u00e0m gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5. H\u1ee3p kim c\u00f3 th\u1ec3 ch\u1ecbu t\u1ea3i tr\u1ecdng va \u0111\u1eadp l\u1edbn \u1edf nhi\u1ec7t \u0111\u1ed9 c\u1eaft. \u0110i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a TAC cao t\u1edbi 3880 \u2103. Vi\u1ec7c b\u1ed5 sung TAC r\u1ea5t c\u00f3 l\u1ee3i \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a h\u1ee3p kim. Ngay c\u1ea3 \u1edf 1000 \u2103, n\u00f3 v\u1eabn c\u00f3 th\u1ec3 duy tr\u00ec \u0111\u1ed9 c\u1ee9ng v\u00e0 s\u1ee9c m\u1ea1nh t\u1ed1t.<\/strong><\/strong><\/p>\n\n\n\n Tic v\u00e0 TAC kh\u00f4ng h\u00f2a tan trong WC, trong khi WC h\u00f2a tan trong tic. \u0110\u1ed9 h\u00f2a tan c\u1ee7a WC trong dung d\u1ecbch r\u1eafn li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh b\u1edfi TAC l\u00e0 kho\u1ea3ng 70wt%. \u0110\u1ed9 tan c\u1ee7a WC trong dung d\u1ecbch r\u1eafn gi\u1ea3m khi h\u00e0m l\u01b0\u1ee3ng TAC t\u0103ng. C\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a h\u1ee3p kim WC tic tac Co ch\u1ee7 y\u1ebfu \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh tic + TAC, t\u1ef7 l\u1ec7 s\u1ed1 nguy\u00ean t\u1eed Ti tr\u00ean s\u1ed1 nguy\u00ean t\u1eed ta v\u00e0 h\u00e0m l\u01b0\u1ee3ng coban. Khi t\u1ef7 l\u1ec7 gi\u1eefa s\u1ed1 nguy\u00ean t\u1eed Ti v\u1edbi s\u1ed1 nguy\u00ean t\u1eed ta v\u00e0 h\u00e0m l\u01b0\u1ee3ng coban \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh h\u00e0m l\u01b0\u1ee3ng TiC + TAC \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u1ed1t nh\u1ea5t \u0111\u00e3 tr\u1edf th\u00e0nh tr\u1ecdng t\u00e2m c\u1ee7a nghi\u00ean c\u1ee9u.<\/strong><\/strong><\/p>\n\n\n\n 1. Nguy\u00ean li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u00ed nghi\u1ec7m n\u00e0y l\u00e0: b\u1ed9t WC, b\u1ed9t cacbua h\u1ee3p ch\u1ea5t [(W, Ti, TA) C] v\u00e0 b\u1ed9t Co. Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong B\u1ea3ng 1.<\/strong><\/strong><\/p>\n\n\n\n