{"id":3160,"date":"2018-12-19T02:02:44","date_gmt":"2018-12-19T02:02:44","guid":{"rendered":"https:\/\/www.mcctcarbide.com\/?p=3160"},"modified":"2020-05-06T07:21:24","modified_gmt":"2020-05-06T07:21:24","slug":"how-to-deal-with-the-chipping-of-cast-irons-machining","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/how-to-deal-with-the-chipping-of-cast-irons-machining\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi s\u1ef1 s\u1ee9t m\u1ebb c\u1ee7a gia c\u00f4ng gang?"},"content":{"rendered":"
\n

1. \u0110\u1eb7c \u0111i\u1ec3m x\u1eed l\u00fd c\u1ee7a s\u1eaft x\u00e1m<\/strong><\/p>\n\n\n\n

Gang x\u00e1m c\u00f3 \u0111\u1eb7c t\u00ednh gi\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o th\u1ea5p (c\u1ea5u tr\u00fac gang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 c\u1ea5u tr\u00fac h\u1ee3p kim s\u1eaft-carbon ch\u1ee9a \u0111\u1ea7y l\u1ed7 than ch\u00ec. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a than ch\u00ec l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 d\u1ebbo c\u1ee7a gang) v\u00e0 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u gi\u00f2n \u0111i\u1ec3n h\u00ecnh .<\/p>\n\n\n\n

C\u1ea5u tr\u00fac khoang than ch\u00ec c\u1ee7a than ch\u00ec v\u1ea3y trong gang x\u00e1m r\u1ea5t d\u1ec5 t\u1ea1o th\u00e0nh c\u00e1c v\u1ebft n\u1ee9t v\u1edbi c\u00e1c c\u1ea1nh s\u1eafc. Trong qu\u00e1 tr\u00ecnh c\u1eaft, d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c c\u1eaft c\u1ee7a d\u1ee5ng c\u1ee5, v\u1ebft n\u1ee9t ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng kh\u00e1ng t\u1ed1i thi\u1ec3u, d\u1eabn \u0111\u1ebfn s\u1ee9t m\u1ebb v\u00e0 g\u00e3y chip. Do \u0111\u00f3, gang x\u00e1m t\u1ea1o th\u00e0nh nh\u1eefng m\u1ea3nh v\u1ee5n v\u1ee1 trong qu\u00e1 tr\u00ecnh c\u1eaft. \u0110\u1ed3ng th\u1eddi, d\u1ee5ng c\u1ee5 \u1edf tr\u1ea1ng th\u00e1i l\u00e0m vi\u1ec7c c\u1eaft kh\u00f4ng li\u00ean t\u1ee5c trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd gang x\u00e1m. Khi than ch\u00ec trong th\u00e2n c\u01a1 s\u1edf b\u1ecb c\u1eaft, d\u1ee5ng c\u1ee5 \u1edf tr\u1ea1ng th\u00e1i kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng v\u00e0 kim lo\u1ea1i b\u1ecb c\u1eaft. Trong tr\u01b0\u1eddng h\u1ee3p th\u00e2n m\u00e1y, h\u00e0nh \u0111\u1ed9ng c\u1eaft c\u1ee7a d\u1ee5ng c\u1ee5 x\u1ea3y ra v\u00e0 dao li\u00ean t\u1ee5c c\u1eaft v\u00e0o v\u00e0 c\u1eaft ra, g\u00e2y ra c\u00e1c chu k\u1ef3 \u1ee9ng su\u1ea5t k\u00e9o v\u00e0 n\u00e9n t\u1ea7n s\u1ed1 cao c\u1ee7a d\u1ee5ng c\u1ee5 g\u1ea7n m\u00e9p c\u1eaft. T\u1ea3i tr\u1ecdng xen k\u1ebd l\u00e0m cho l\u1edbp b\u1ec1 m\u1eb7t c\u1ee7a d\u1ee5ng c\u1ee5 b\u1ecb m\u1ecfi v\u00e0 g\u00e2y ra s\u1ee9t m\u1ebb nh\u1eb9 \u1edf c\u1ea1nh c\u1eaft, l\u00e0m gi\u1ea3m Hi\u1ec7u su\u1ea5t c\u1eaft c\u1ee7a dao.<\/p>\n\n\n\n

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

Trong qu\u00e1 tr\u00ecnh c\u1eaft, c\u1ea5u tr\u00fac gang x\u00e1m c\u1eaft th\u01b0\u1eddng xuy\u00ean b\u1ecb ph\u00e1 v\u1ee1 b\u1ea5t th\u01b0\u1eddng, g\u00e2y ra s\u1ef1 thay \u0111\u1ed5i kh\u00f4ng \u1ed5n \u0111\u1ecbnh trong l\u1ef1c c\u1eaft v\u00e0 t\u00e1c \u0111\u1ed9ng l\u1edbn \u0111\u1ebfn l\u01b0\u1ee1i c\u1eaft. Khi gang x\u00e1m b\u1ecb c\u1eaft, c\u00e1c m\u1ea3nh v\u1ee5n \u0111i\u1ec3n h\u00ecnh \u0111\u01b0\u1ee3c t\u1ea1o ra. H\u1ec7 s\u1ed1 bi\u1ebfn d\u1ea1ng c\u1ee7a chip nh\u1ecf v\u00e0 chi\u1ec1u d\u00e0i ti\u1ebfp x\u00fac c\u1ee7a chip c\u1ef1c ng\u1eafn, do \u0111\u00f3 l\u1ef1c c\u1eaft v\u00e0 nhi\u1ec7t c\u1eaft \u0111\u01b0\u1ee3c t\u1eadp trung trong m\u1ed9t khu v\u1ef1c nh\u1ecf c\u1ee7a l\u01b0\u1ee1i c\u1eaft v\u00e0 d\u1ee5ng c\u1ee5 c\u00f3 \u0111\u1ed9 m\u00f2n s\u1ed1c nhi\u1ec7t.<\/p>\n\n\n\n

\"\"

<\/figcaption><\/figure>\n\n\n\n

C\u00e1c m\u1ea3nh v\u1ee5n s\u1ee9t m\u1ebb v\u00e0 c\u00e1c \u0111i\u1ec3m c\u1ee9ng cacbua r\u01a1i xu\u1ed1ng do m\u00e1y c\u1eaft t\u1ea1o ra khi c\u1eaft gang x\u00e1m th\u01b0\u1eddng l\u00e0m cho b\u1ec1 m\u1eb7t ph\u00f4i v\u00e0 l\u01b0\u1ee1i dao ph\u00eda sau b\u1ecb m\u00e0i m\u00f2n, d\u1eabn \u0111\u1ebfn m\u00e0i m\u00f2n s\u01b0\u1eddn VB; nhi\u1ec7t \u0111\u1ed9 c\u1eaft r\u00f5 r\u00e0ng t\u0103ng l\u00ean m\u1ed9t khi m\u1eb7t s\u01b0\u1eddn b\u1ecb m\u00f2n, s\u1ee9t m\u1ebb v\u00e0 s\u1ee9t m\u1ebb d\u1ec5 d\u00e0ng \u0111i v\u00e0o giao di\u1ec7n s\u1ee9t m\u1ebb. D\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u00e1p su\u1ea5t cao, ph\u1ea7n t\u1eed s\u1eaft trong phoi v\u00e0 b\u1ec1 m\u1eb7t d\u1ee5ng c\u1ee5 v\u00e0 b\u1ec1 m\u1eb7t d\u1ee5ng c\u1ee5 t\u1ea1o th\u00e0nh dung d\u1ecbch r\u1eafn thay th\u1ebf v\u00f4 h\u1ea1n, d\u1eabn \u0111\u1ebfn hao m\u00f2n khu\u1ebfch t\u00e1n, trong khi chip l\u00e0m m\u1ec1m v\u00e0 b\u00e1m d\u00ednh v\u00e0o b\u1ec1 m\u1eb7t d\u1ee5ng c\u1ee5. B\u1ec1 m\u1eb7t m\u00e0i m\u00f2n t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp d\u00ednh \u0111\u1ed3ng nh\u1ea5t d\u1eabn \u0111\u1ebfn hao m\u00f2n li\u00ean k\u1ebft. M\u1ed9t khi c\u1ea1nh c\u1ee7a d\u1ee5ng c\u1ee5 c\u1eaft b\u1ecb m\u00f2n ho\u1eb7c s\u1ee9t m\u1ebb, l\u1ef1c c\u1eaft t\u0103ng m\u1ea1nh, ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t c\u1ee7a ph\u00f4i \u0111\u00e3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 v\u00e0 c\u1ea1nh d\u1ec5 b\u1ecb v\u1ee1 ho\u1eb7c s\u1ee5p \u0111\u1ed5, d\u1ec5 s\u1ee5p \u0111\u1ed5;<\/p>\n\n\n\n

2. Hi\u1ec7u \u1ee9ng c\u1ee7a c\u00e1c g\u00f3c c\u1eaft ch\u00ednh<\/strong><\/p>\n\n\n\n

90 \u0111\u1ed9 c\u1ee7a c\u00e1c g\u00f3c c\u1eaft ch\u00ednh s\u1ebd gi\u1edbi thi\u1ec7u tri\u1ec7t \u0111\u1ec3 l\u1ef1c c\u1ea5p li\u1ec7u v\u00e0o ph\u1ea7n m\u1ecfng h\u01a1n c\u1ee7a v\u1eadt li\u1ec7u ph\u00f4i;<\/p>\n\n\n\n

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

45 \u0111\u1ed9 g\u00f3c c\u1eaft ch\u00ednh s\u1ebd h\u01b0\u1edbng l\u1ef1c v\u00e0o v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ee1 b\u1edfi \u0111\u1ebf r\u1ed9ng h\u01a1n;<\/p>\n\n\n\n

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

Kho\u1ea3ng tr\u1ed1ng v\u00e0 v\u1ec7t x\u1ea3y ra khi l\u1ef1c c\u1ea5p li\u1ec7u v\u01b0\u1ee3t qu\u00e1 c\u01b0\u1eddng \u0111\u1ed9 v\u1eadt li\u1ec7u. C\u00e1c v\u1eadt li\u1ec7u gi\u00f2n nh\u01b0 gang c\u00f3 xu h\u01b0\u1edbng c\u00f3 c\u00e1c kho\u1ea3ng tr\u1ed1ng, trong khi c\u00e1c v\u1eadt li\u1ec7u ph\u00f4i c\u1ee9ng h\u01a1n c\u00f3 xu h\u01b0\u1edbng c\u00f3 c\u00e1c v\u1ec7t. V\u1eadt li\u1ec7u ph\u00f4i kh\u00f3 kh\u0103n h\u01a1n th\u01b0\u1eddng c\u00f3 burrs. N\u00f3 h\u01b0\u1edbng l\u1ef1c l\u01b0\u1ee3ng th\u1ee9c \u0103n \u0111\u1ebfn ph\u1ea7n c\u1ee9ng h\u01a1n c\u1ee7a v\u1eadt li\u1ec7u ph\u00f4i. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m ho\u1eb7c lo\u1ea1i b\u1ecf s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c m\u0169i ho\u1eb7c ph\u00f4i.<\/p>\n\n\n\n

3. Hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c r\u00e3nh c\u1eaft kh\u00e1c nhau<\/strong><\/p>\n\n\n\n

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

Vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t l\u01b0\u1ee1i dao c\u00f3 r\u00e3nh s\u1eafc c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 l\u1ef1c c\u1eaft v\u00e0 gi\u1ea3m s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a s\u1ee9t m\u1ebb. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, fz b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi \u0111\u1ed9 d\u00e0y chip trung b\u00ecnh c\u1ee7a l\u01b0\u1ee1i dao. C\u1ed1 g\u1eafng ch\u1ecdn lo\u1ea1i l\u01b0\u1ee1i c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ed1t nh\u01b0ng c\u1ea1nh s\u1eafc n\u00e9t (c\u1eaft h\u00ecnh d\u1ea1ng r\u00e3nh nh\u1eb9, g\u00f3c tr\u01b0\u1edbc l\u1edbn, lo\u1ea1i l\u01b0\u1ee1i m\u1ea1nh nh\u01b0ng m\u1ea1nh (chi\u1ec1u r\u1ed9ng l\u01b0\u1ee1i nh\u1ecf h\u01a1n T), trong khi gia c\u00f4ng th\u00f4, khi \u1edf tr\u1ea1ng th\u00e1i l\u00e0m vi\u1ec7c Khi kh\u00f4ng \u1ed5n \u0111\u1ecbnh, khi fz l\u1edbn (h\u01a1n 0,2) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, hi\u1ec7n t\u01b0\u1ee3ng s\u1ee9t m\u1ebb s\u1ebd tr\u1ea7m tr\u1ecdng h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi d\u1ee5ng c\u1ee5 c\u1eaft v\u00e0o v\u00e0 c\u1eaft ph\u00f4i. Sau khi l\u01b0\u1ee1i dao m\u00f2n h\u01a1n 0,3, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y c\u0169ng t\u01b0\u01a1ng t\u1ef1. S\u1ebd t\u0103ng l\u00ean.<\/p>\n\n\n\n

4. T\u00e1c d\u1ee5ng c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau<\/strong><\/p>\n\n\n\n

L\u1eafng \u0111\u1ecdng h\u01a1i v\u1eadt l\u00fd (PVD), c\u00e1c \u1ee9ng d\u1ee5ng l\u1edbp ph\u1ee7 m\u1ecfng h\u01a1n v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u1ea1nh c\u1eaft t\u01b0\u01a1ng \u0111\u1ed1i s\u1eafc n\u00e9t. L\u1edbp ph\u1ee7 l\u00e0m t\u0103ng \u0111\u1ed9 b\u00f4i tr\u01a1n v\u00e0 gi\u00fap gi\u1ea3m l\u1ef1c c\u1eaft t\u1ea1o ra gi\u1eefa d\u1ee5ng c\u1ee5 v\u00e0 ph\u00f4i, l\u00e0m cho vi\u1ec7c c\u1eaft t\u01b0\u01a1ng \u0111\u1ed1i nh\u1eb9. \u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng s\u1eadp c\u1ea1nh trong qu\u00e1 tr\u00ecnh ho\u00e0n thi\u1ec7n, s\u1ebd c\u00f3 m\u1ed9t s\u1ef1 c\u1ea3i thi\u1ec7n l\u1edbn.<\/p>\n\n\n\n

5. C\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c<\/strong>
Trong th\u1ecb tr\u01b0\u1eddng gia c\u00f4ng hi\u1ec7n nay, \u0111\u1ed1i v\u1edbi vi\u1ec7c x\u1eed l\u00fd v\u1eadt li\u1ec7u gang, t\u1eeb k\u1ebft qu\u1ea3 x\u1eed l\u00fd th\u1ef1c t\u1ebf, tu\u1ed5i th\u1ecd c\u00f4ng c\u1ee5 c\u1ee7a v\u1eadt li\u1ec7u s\u1eaft d\u1ec5 u\u1ed1n (ch\u1ee7 y\u1ebfu l\u00e0 burrs) (d\u01b0\u1edbi QT450) t\u1ed1t h\u01a1n so v\u1edbi s\u1eaft x\u00e1m (ch\u1ee7 y\u1ebfu l\u00e0 s\u1ee9t m\u1ebb ph\u00f4i). S\u1ee9t m\u1ebb ph\u00f4i v\u00e0 v\u1ec7t d\u1eabn \u0111\u1ebfn m\u1ed9t y\u1ebfu t\u1ed1 l\u1edbn trong thay \u0111\u1ed5i c\u00f4ng c\u1ee5. Ngo\u00e0i g\u00f3c ch\u00ec 45 \u0111\u1ed9 m\u00e0 ch\u00fang ta th\u01b0\u1eddng s\u1eed d\u1ee5ng, lo\u1ea1i l\u01b0\u1ee1i dao s\u1eafc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf cho m\u1ed7i r\u0103ng. N\u00f3 c\u0169ng t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 c\u1ee9ng k\u1eb9p c\u1ee7a ph\u00f4i (th\u00eam h\u1ed7 tr\u1ee3 ph\u1ee5 cho c\u00e1c b\u1ed9 ph\u1eadn y\u1ebfu), v\u00e0 c\u0169ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i v\u1ecb tr\u00ed c\u1ee7a d\u1ee5ng c\u1ee5, v.v.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

1.Processing characteristics of gray iron Gray cast iron has the characteristics of brittleness and low tensile strength (cast iron structure can be regarded as iron-carbon alloy structure filled with graphite pores. The presence of flake graphite reduces the ductility and toughness of cast iron) and is a typical brittle material. The graphite cavity structure of…<\/p>","protected":false},"author":2,"featured_media":19381,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2018\/12\/1-1.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/3160"}],"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=3160"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/3160\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media\/19381"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=3160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=3160"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=3160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}