{"id":1635,"date":"2019-05-22T02:47:32","date_gmt":"2019-05-22T02:47:32","guid":{"rendered":"http:\/\/www.meetyoucarbide.com\/single-post-the-working-principle-of-ball-mill\/"},"modified":"2020-05-04T13:12:09","modified_gmt":"2020-05-04T13:12:09","slug":"the-working-principle-of-ball-mill","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/nguyen-tac-lam-viec-cua-may-nghien-bi\/","title":{"rendered":"Nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c c\u1ee7a m\u00e1y nghi\u1ec1n bi"},"content":{"rendered":"<div class=\"vgblk-rw-wrapper limit-wrapper\">\n<div><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/f875f9_bec84490115c4ea98fcde9d02cb64ac4mv2-1.jpg\" alt=\"\" title=\"\"><\/p>\n<div>M\u00e1y nghi\u1ec1n bi bao g\u1ed3m m\u1ed9t xi lanh kim lo\u1ea1i v\u00e0 m\u1ed9t qu\u1ea3 b\u00f3ng. Nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c l\u00e0 khi xi lanh \u0111\u01b0\u1ee3c quay, th\u00e2n m\u00e0i (b\u00f3ng) v\u00e0 v\u1eadt c\u1ea7n \u0111\u00e1nh b\u00f3ng (v\u1eadt li\u1ec7u) \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong xi lanh \u0111\u01b0\u1ee3c quay b\u1edfi xi lanh d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c ma s\u00e1t v\u00e0 l\u1ef1c ly t\u00e2m. \u1ede m\u1ed9t \u0111\u1ed9 cao nh\u1ea5t \u0111\u1ecbnh, n\u00f3 s\u1ebd t\u1ef1 \u0111\u1ed9ng r\u01a1i xu\u1ed1ng v\u00e0 t\u00e1c \u0111\u1ed9ng v\u00e0 nghi\u1ec1n v\u1eadt li\u1ec7u trong xi lanh \u0111\u1ec3 nghi\u1ec1n v\u1eadt li\u1ec7u. Ngo\u00e0i ra, s\u1ef1 khu\u1ea5y tr\u1ed9n c\u1ee7a qu\u1ea3 b\u00f3ng s\u1ebd tr\u1ed9n \u0111\u1ec1u c\u00e1c v\u1eadt li\u1ec7u.<\/div>\n<div>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 nghi\u1ec1n b\u00f3ng, ngo\u00e0i c\u1ea5u tr\u00fac c\u1ee7a m\u00e1y nghi\u1ec1n bi. Ch\u1ee7 y\u1ebfu l\u00e0 t\u1ed1c \u0111\u1ed9 quay c\u1ee7a m\u00e1y nghi\u1ec1n bi, k\u00edch th\u01b0\u1edbc v\u00e0 s\u1ed1 l\u01b0\u1ee3ng th\u00e2n m\u00e0i, th\u1ec3 t\u00edch c\u1ee7a v\u1eadt c\u1ea7n \u0111\u00e1nh b\u00f3ng, m\u00f4i tr\u01b0\u1eddng m\u00e0i v\u00e0 th\u1eddi gian m\u00e0i.<\/div>\n<h2>1. t\u1ed1c \u0111\u1ed9 c\u1ee7a m\u00e1y nghi\u1ec1n bi<\/h2>\n<div>Khi m\u00e1y nghi\u1ec1n bi quay, chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a b\u00f3ng trong th\u00f9ng c\u00f3 th\u1ec3 c\u00f3 ba tr\u1ea1ng th\u00e1i (\u1ea3nh 8-1).<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/f875f9_5cad526aa56b4c70aebb69030a5714bemv2-1.png\" alt=\"\" title=\"\"><\/p>\n<div>Khi t\u1ed1c \u0111\u1ed9 quay c\u1ee7a xi lanh nghi\u1ec1n kh\u00f4ng l\u1edbn, l\u01b0\u1ee3ng t\u1ea3i b\u00f3ng s\u1ebd \u00edt h\u01a1n v\u00e0 tr\u1ea1ng th\u00e1i tr\u01b0\u1ee3t a s\u1ebd x\u1ea3y ra, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 lo\u1ea1i d\u1ed1c. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, qu\u1ea3 b\u00f3ng kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng khu\u1ea5y l\u00ean v\u1eadt li\u1ec7u, v\u00e0 ch\u1ec9 c\u00f3 qu\u1ea3 b\u00f3ng c\u00f3 t\u00e1c d\u1ee5ng ma s\u00e1t v\u1edbi v\u1eadt li\u1ec7u. Do \u0111\u00f3, hi\u1ec7u qu\u1ea3 tr\u1ed9n v\u00e0 nghi\u1ec1n l\u00e0 c\u1ef1c k\u1ef3 th\u1ea5p.<\/div>\n<div>Khi t\u1ed1c \u0111\u1ed9 quay cao v\u00e0 l\u01b0\u1ee3ng t\u1ea3i b\u00f3ng l\u1edbn, qu\u1ea3 b\u00f3ng t\u1ea1o th\u00e0nh m\u1ed9t lo\u1ea1i th\u1ea3 d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c ly t\u00e2m v\u00e0 b\u1eaft \u0111\u1ea7u nghi\u1ec1n b. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, c\u00f3 c\u1ea3 h\u00e0nh \u0111\u1ed9ng xoay v\u00e0 ma s\u00e1t l\u1eabn nhau gi\u1eefa qu\u1ea3 b\u00f3ng v\u00e0 v\u1eadt li\u1ec7u (h\u00e0nh \u0111\u1ed9ng m\u00e0i), do \u0111\u00f3 hi\u1ec7u qu\u1ea3 tr\u1ed9n v\u00e0 nghi\u1ec1n cao.<\/div>\n<div>Khi t\u1ed1c \u0111\u1ed9 quay c\u1ee7a xi lanh m\u00e0i cao h\u01a1n m\u1ed9t t\u1ed1c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh (t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n), qu\u1ea3 c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o th\u00e0nh c\u1ee7a xi lanh v\u00e0 kh\u00f4ng th\u1ec3 r\u01a1i t\u1ef1 do do l\u1ef1c ly t\u00e2m l\u1edbn. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, v\u1eadt li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c khu\u1ea5y c\u0169ng kh\u00f4ng b\u1ecb h\u1ecfng.<\/div>\n<div>R\u00f5 r\u00e0ng, chuy\u1ec3n \u0111\u1ed9ng h\u00ecnh c\u1ea7u l\u00e0 th\u1ecfa \u0111\u00e1ng h\u01a1n \u1edf tr\u1ea1ng th\u00e1i b. Khi qu\u1ea3 b\u00f3ng \u0111\u01b0\u1ee3c xoay theo h\u00ecnh tr\u1ee5 Tang, t\u1ed1c \u0111\u1ed9 t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n v\u00e0 t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng:<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/f875f9_62ea1fd09f1e42d8b31f2fb5f998d01dmv2-1.png\" alt=\"\" title=\"\"><\/p>\n<div>Trong \u0111\u00f3 D l\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a th\u00f9ng nghi\u1ec1n (m\u00e9t). \u0110\u1eb7t D = 0,5 m, sau \u0111\u00f3<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/f875f9_6c1ad8b3f1af4c839a27b0cbab5e8055mv2-1.png\" alt=\"\" title=\"\"><\/p>\n<div>\u0110\u00e2y l\u00e0 t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n c\u1ee7a m\u00e1y nghi\u1ec1n \u01b0\u1edbt 180 l\u00edt hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t cacbua xi m\u0103ng.<\/div>\n<div>\u0110\u1ec3 t\u1ea1o b\u00f3ng \u1edf tr\u1ea1ng th\u00e1i b, t\u1ed1c \u0111\u1ed9 th\u1ef1c t\u1ebf c\u1ee7a m\u00e1y nghi\u1ec1n bi th\u01b0\u1eddng l\u00e0 36 v\u00f2ng \/ ph\u00fat.<\/div>\n<div><\/div>\n<h2>2. s\u1ed1 l\u01b0\u1ee3ng b\u00f3ng t\u1ea3i<\/h2>\n<div>\u0110\u1ec3 l\u00e0m cho qu\u1ea3 b\u00f3ng \u1edf tr\u1ea1ng th\u00e1i l\u0103n, ngo\u00e0i t\u1ed1c \u0111\u1ed9 quay c\u1ee7a xi lanh m\u00e0i, n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o l\u01b0\u1ee3ng t\u1ea3i b\u00f3ng v\u00e0 ma s\u00e1t gi\u1eefa th\u00e2n m\u00e0i v\u00e0 th\u00e0nh c\u1ee7a xi lanh. Hi\u1ec7n t\u1ea1i, m\u1eb7c d\u00f9 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u1ee7a l\u01b0\u1ee3ng t\u1ea3i b\u00f3ng gi\u1edbi h\u1ea1n c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t theo l\u00fd thuy\u1ebft, v\u00ec h\u1ec7 s\u1ed1 ma s\u00e1t r\u1ea5t kh\u00f3 \u0111o, l\u01b0\u1ee3ng t\u1ea3i b\u00f3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo kinh nghi\u1ec7m.<\/div>\n<div>Theo kinh nghi\u1ec7m, l\u01b0\u1ee3ng t\u1ea3i quan tr\u1ecdng l\u00e0 kho\u1ea3ng 40% \u0111\u1ebfn 50% c\u1ee7a th\u1ec3 t\u00edch c\u1ee7a xi lanh nghi\u1ec1n.<\/div>\n<div>T\u1ef7 l\u1ec7 th\u1ec3 t\u00edch c\u1ee7a qu\u1ea3 b\u00f3ng v\u1edbi \u00e2m l\u01b0\u1ee3ng c\u1ee7a tr\u1ed1ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u1ec7 s\u1ed1 l\u1ea5p \u0111\u1ea7y. N\u1ebfu h\u1ec7 s\u1ed1 l\u1ea5p \u0111\u1ea7y nh\u1ecf h\u01a1n 30%, qu\u1ea3 c\u1ea7u c\u00f3 th\u1ec3 \u1edf tr\u1ea1ng th\u00e1i tr\u01b0\u1ee3t v\u00e0 hi\u1ec7u su\u1ea5t m\u00e0i th\u1ea5p. N\u1ebfu h\u1ec7 s\u1ed1 l\u1ea5p \u0111\u1ea7y l\u1edbn h\u01a1n 50%, m\u00f4men qu\u00e1n t\u00ednh c\u1ee7a qu\u1ea3 b\u00f3ng g\u1ea7n t\u00e2m quay qu\u00e1 nh\u1ecf, \u0111i\u1ec1u n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 m\u00e0i. H\u1ec7 s\u1ed1 l\u1ea5p \u0111\u1ea7y h\u1ee3p l\u00fd l\u00e0 40-50% v\u00e0 hi\u1ec7u qu\u1ea3 m\u00e0i l\u00e0 t\u1ed1i \u0111a t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y.<\/div>\n<div><\/div>\n<h2>3. k\u00edch th\u01b0\u1edbc c\u1ee7a qu\u1ea3 b\u00f3ng<\/h2>\n<div>Qu\u00e1 tr\u00ecnh m\u00e0i x\u1ea3y ra b\u1eb1ng c\u00e1ch ti\u1ebfp x\u00fac v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a qu\u1ea3 b\u00f3ng v\u1edbi b\u1ed9t. Do \u0111\u00f3, trong m\u00e1y nghi\u1ec1n bi, hi\u1ec7u su\u1ea5t m\u00e0i \u0111\u01b0\u1ee3c t\u0103ng l\u00ean khi \u0111\u01b0\u1eddng k\u00ednh b\u00f3ng gi\u1ea3m. Ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ee9ng minh r\u1eb1ng hi\u1ec7u qu\u1ea3 m\u00e0i cao nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u1edbi m\u1ed9t qu\u1ea3 b\u00f3ng nh\u1ecf c\u00f3 \u0111\u01b0\u1eddng k\u00ednh .mm. Tuy nhi\u00ean, \u0111\u01b0\u1eddng k\u00ednh b\u00f3ng qu\u00e1 nh\u1ecf \u0111\u1ec3 m\u00f2n qu\u00e1 nhanh, v\u00e0 c\u0169ng kh\u00f3 x\u1ea3 do khe h\u1edf nh\u1ecf c\u1ee7a b\u00f3ng. Do \u0111\u00f3, qu\u1ea3 b\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh nghi\u1ec1n \u01b0\u1edbt h\u1ed7n h\u1ee3p kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 nh\u1ecf ho\u1eb7c qu\u00e1 l\u1edbn. Trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t cacbua xi m\u0103ng, b\u00f3ng dia5-10 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e0i v\u1eadt li\u1ec7u WC-Co, v\u00e0 b\u00f3ng dia 12-18 mm ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e0i v\u1eadt li\u1ec7u WC-TiC-Co. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c qu\u1ea3 b\u00f3ng cacbua xi m\u0103ng l\u00e0m t\u0103ng ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a qu\u1ea3 b\u00f3ng v\u00e0 l\u00e0m gi\u1ea3m s\u1ef1 \u00f4 nhi\u1ec5m c\u1ee7a m\u00e0i m\u00f2n \u01b0\u1edbt b\u1edfi c\u00e1c t\u1ea1p ch\u1ea5t. Vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t h\u00ecnh tr\u1ee5 nh\u1ecf thay v\u00ec m\u1ed9t qu\u1ea3 b\u00f3ng nh\u01b0 c\u01a1 th\u1ec3 m\u00e0i m\u00f2n c\u00f3 hi\u1ec7u qu\u1ea3 m\u00e0i cao h\u01a1n.<\/div>\n<div><\/div>\n<h2>4. s\u1ed1 l\u01b0\u1ee3ng t\u1ea3i<\/h2>\n<div>L\u01b0\u1ee3ng \u0111i\u1ec7n t\u00edch th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng t\u1ef7 l\u1ec7 c\u1ee7a qu\u1ea3 b\u00f3ng v\u1edbi qu\u1ea3 b\u00f3ng (t\u1ef7 l\u1ec7 c\u1ee7a qu\u1ea3 b\u00f3ng v\u1edbi v\u1eadt li\u1ec7u n\u1eb7ng). T\u1ef7 l\u1ec7 b\u00f3ng v\u1edbi v\u1eadt li\u1ec7u c\u00e0ng l\u1edbn th\u00ec hi\u1ec7u qu\u1ea3 m\u00e0i c\u00e0ng cao. Nh\u01b0ng t\u1ef7 l\u1ec7 b\u00f3ng qu\u00e1 cao l\u00e0 kh\u00f4ng c\u00f3 \u00edch. B\u1edfi v\u00ec l\u01b0\u1ee3ng \u0111i\u1ec7n t\u00edch gi\u1ea3m khi h\u1ec7 s\u1ed1 l\u1ea5p \u0111\u1ea7y kh\u00f4ng \u0111\u1ed5i, n\u00ean bu\u1ed9c ph\u1ea3i gi\u1ea3m n\u0103ng su\u1ea5t c\u1ee7a b\u1ed9 v\u00e0 \u0111\u00f4i khi l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t c\u1ee7a h\u1ee3p kim (H\u00ecnh 8-2). T\u1ef7 l\u1ec7 b\u00f3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ecdn t\u1eeb 2: 1 \u0111\u1ebfn 5: 1. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, t\u1ef7 l\u1ec7 b\u00f3ng l\u1edbn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. V\u00ed d\u1ee5, m\u1ed9t thanh cacbua d\u1ef1a tr\u00ean cacbua titan nghi\u1ec1n \u01b0\u1edbt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho 6: 1. B\u1edfi v\u00ec kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a h\u1ed7n h\u1ee3p l\u1edbn t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y. C\u00f3 v\u1ebb nh\u01b0 vi\u1ec7c s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 b\u00f3ng v\u1edbi v\u1eadt li\u1ec7u \u0111\u1ec3 ch\u1ec9 ra l\u01b0\u1ee3ng \u0111i\u1ec7n t\u00edch s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n. V\u1ec1 l\u00fd thuy\u1ebft, khi v\u1eadt li\u1ec7u ch\u1ec9 l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng c\u1ee7a qu\u1ea3 b\u00f3ng, c\u1ea3 hi\u1ec7u qu\u1ea3 m\u00e0i v\u00e0 hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t \u0111\u1ec1u l\u00fd t\u01b0\u1edfng.<\/div>\n<div><\/div>\n<h2>5. ph\u01b0\u01a1ng ti\u1ec7n m\u00e0i<\/h2>\n<div>L\u00e0 m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n \u01b0\u1edbt, n\u00f3 ph\u1ea3i c\u00f3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau \u0111\u00e2y v\u00e0 kh\u00f4ng c\u00f3 ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc v\u1edbi h\u1ed7n h\u1ee3p, kh\u00f4ng c\u00f3 t\u1ea1p ch\u1ea5t c\u00f3 h\u1ea1i, nhi\u1ec7t \u0111\u1ed9 s\u00f4i th\u1ea5p, lo\u1ea1i b\u1ecf d\u1ec5 bay h\u01a1i \u1edf kho\u1ea3ng 100oC, s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t nh\u1ecf, kh\u00f4ng k\u1ebft t\u1ee5 b\u1ed9t, kh\u00f4ng \u0111\u1ed9c h\u1ea1i, ho\u1ea1t \u0111\u1ed9ng an to\u00e0n, Th\u1ea5p gi\u00e1 c\u1ea3 c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 xem x\u00e9t.<\/div>\n<div>L\u00e0 m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n \u01b0\u1edbt, c\u00f3 c\u1ed3n, acetone, x\u0103ng, carbon tetraclorua, benzen, hexan v\u00e0 c\u00e1c lo\u1ea1i t\u01b0\u01a1ng t\u1ef1. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong s\u1ea3n xu\u1ea5t l\u00e0 r\u01b0\u1ee3u, ti\u1ebfp theo l\u00e0 acetone, hexane v\u00e0 t\u01b0\u01a1ng t\u1ef1.<\/div>\n<div>Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n \u01b0\u1edbt l\u00e0 ph\u00e2n t\u00e1n c\u00e1c ch\u1ea5t k\u1ebft t\u1ee5 b\u1ed9t, thu\u1eadn l\u1ee3i cho vi\u1ec7c tr\u1ed9n \u0111\u1ec1u. Ngo\u00e0i ra, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u1ea5p ph\u1ee5 tr\u00ean c\u00e1c khuy\u1ebft t\u1eadt c\u1ee7a c\u00e1c h\u1ea1t b\u1ed9t, do \u0111\u00f3 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c h\u1ea1t b\u1ed9t \u0111\u01b0\u1ee3c h\u1ea1 th\u1ea5p, do \u0111\u00f3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c g\u00e3y x\u01b0\u01a1ng.<\/div>\n<div>L\u01b0\u1ee3ng m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n \u01b0\u1edbt \u0111\u01b0\u1ee3c th\u00eam v\u00e0o th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng t\u1ef7 l\u1ec7 ch\u1ea5t l\u1ecfng-r\u1eafn, ngh\u0129a l\u00e0 s\u1ed1 milil\u00edt ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o m\u1ed7i kg h\u1ed7n h\u1ee3p.<\/div>\n<div><\/div>\n<h2>6.wet m\u00e0i th\u1eddi gian<\/h2>\n<div>Th\u1ef1c t\u1ebf \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng khi th\u1eddi gian nghi\u1ec1n \u01b0\u1edbt t\u0103ng l\u00ean, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t tr\u1edf n\u00ean m\u1ecbn h\u01a1n, nh\u01b0ng \u0111\u1ed3ng th\u1eddi, ph\u1ea1m vi th\u00e0nh ph\u1ea7n k\u00edch th\u01b0\u1edbc h\u1ea1t tr\u1edf n\u00ean r\u1ed9ng h\u01a1n, l\u00e0m t\u0103ng \u0111\u1ed9 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a b\u1ed9t &amp; kh\u00f4ng g\u00e2y ra s\u1ef1 t\u0103ng tr\u01b0\u1edfng c\u1ee7a h\u1ea1t h\u1ee3p kim sau khi thi\u00eau k\u1ebft. T\u00ednh \u0111\u1ed3ng nh\u1ea5t t\u0103ng l\u00ean.<\/div>\n<div>\u0110\u1ed1i v\u1edbi h\u1ee3p kim WC-TiC-Co hai pha, k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a h\u1ee3p kim ph\u1ee5 thu\u1ed9c \u0111\u00e1ng k\u1ec3 v\u00e0o th\u1eddi gian nghi\u1ec1n \u01b0\u1edbt (H\u00ecnh 8-4). Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, d\u1ec5 d\u00e0ng h\u01a1n \u0111\u1ec3 ch\u1ecdn m\u00e0i \u01b0\u1edbt t\u1ed1t nh\u1ea5t. th\u1eddi gian. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 h\u1ee3p kim kh\u00e1c, nh\u01b0 trong H\u00ecnh 8-5), sau m\u1ed9t th\u1eddi gian nghi\u1ec1n b\u00f3ng nh\u1ea5t \u0111\u1ecbnh, k\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh c\u1ee7a h\u1ee3p kim kh\u00f4ng c\u00f2n gi\u1ea3m \u0111\u00e1ng k\u1ec3.<\/div>\n<div>\u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u1eddi gian nghi\u1ec1n \u01b0\u1edbt \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a h\u1ee3p kim YT15 v\u00e0 YT5 \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea trong B\u1ea3ng 8-2. C\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng sau ba ng\u00e0y nghi\u1ec1n b\u00f3ng, \u0111\u1ed9 b\u1ec1n c\u1ee7a h\u1ee3p kim gi\u1ea3m \u0111i \u0111\u00f4i ch\u00fat, \u0111\u1ed9 c\u1ee9ng v\u00e0 l\u1ef1c c\u01b0\u1ee1ng b\u1ee9c v\u00e0 h\u1ec7 s\u1ed1 c\u1eaft \u0111\u01b0\u1ee3c t\u0103ng l\u00ean m\u1ed9t ch\u00fat v\u00e0 m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i th\u01b0\u1eddng n\u1eb1m trong ph\u1ea1m vi sai s\u1ed1 \u0111o. Do \u0111\u00f3, th\u1eddi gian nghi\u1ec1n b\u00f3ng qu\u00e1 d\u00e0i l\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft.<\/div>\n<div>T\u00f3m l\u1ea1i, v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft hi\u1ec7n t\u1ea1i kh\u00f4ng th\u1ec3 t\u00ednh to\u00e1n th\u1eddi gian nghi\u1ec1n c\u1ee7a c\u00e1c h\u1ed7n h\u1ee3p kh\u00e1c nhau, nh\u01b0ng ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1c th\u00ed nghi\u1ec7m theo y\u00eau c\u1ea7u c\u1ee7a h\u1ee3p kim.<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/f875f9_2ce1e3a4c3214bffa9cc3c3ac3200ceamv2-1.png\" alt=\"\" title=\"\"><\/p>\n<\/div>\n<\/div>\n<p><!-- .vgblk-rw-wrapper --><\/p>","protected":false},"excerpt":{"rendered":"<p>The ball mill consists of a metal cylinder and a ball. The working principle is that when the cylinder is rotated, the grinding body (ball) and the object to be polished (material) installed in the cylinder are rotated by the cylinder under the action of friction and centrifugal force. At a certain height, it will&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-1635","post","type-post","status-publish","format-standard","hentry","category-materials-weekly"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/1635","targetHints":{"allow":["GET"]}}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=1635"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/1635\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=1635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=1635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=1635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}