{"id":2469,"date":"2024-12-26T11:31:30","date_gmt":"2024-12-26T03:31:30","guid":{"rendered":"https:\/\/www.superfinemill.com\/?p=2469"},"modified":"2024-12-26T11:34:30","modified_gmt":"2024-12-26T03:34:30","slug":"ball-mill-loading-ratio-and-steel-ball-size-distribution","status":"publish","type":"post","link":"https:\/\/www.superfinemill.com\/vi\/ball-mill-loading-ratio-and-steel-ball-size-distribution\/","title":{"rendered":"T\u1ef7 l\u1ec7 t\u1ea3i c\u1ee7a m\u00e1y nghi\u1ec1n bi v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc bi th\u00e9p"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2469\" class=\"elementor elementor-2469\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0529221 e-flex e-con-boxed e-con e-parent\" data-id=\"0529221\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8722214 elementor-widget elementor-widget-text-editor\" data-id=\"8722214\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p><p>Khi s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n bi, nh\u1eefng ng\u01b0\u1eddi th\u1ef1c h\u00e0nh kh\u00f4ng c\u00f3 nhi\u1ec1u kinh nghi\u1ec7m th\u01b0\u1eddng g\u1eb7p ph\u1ea3i m\u1ed9t v\u1ea5n \u0111\u1ec1: l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 th\u00eam bi th\u00e9p v\u00e0o m\u00e1y nghi\u1ec1n bi theo t\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc bi th\u00e9p? \u0110i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c nhau c\u1ee7a m\u00e1y nghi\u1ec1n bi, ch\u1eb3ng h\u1ea1n nh\u01b0: k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng k\u00ednh, \u0111\u1ed9 c\u1ee9ng c\u1ee7a qu\u1eb7ng, k\u00edch th\u01b0\u1edbc h\u1ea1t qu\u1eb7ng c\u1ee7a m\u00e1y nghi\u1ec1n bi, \u0111\u1ed9 c\u1ee9ng c\u1ee7a bi th\u00e9p (ch\u1ea5t l\u01b0\u1ee3ng), t\u1ed1c \u0111\u1ed9 m\u00e1y nghi\u1ec1n bi v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c.<\/p><p><\/p><figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-7495\" src=\"https:\/\/www.epic-powder.com\/wp-content\/uploads\/2024\/12\/Steel-balls-of-ball-mill-1024x768.webp\" alt=\"\" \/><\/figure><p><\/p><h2 class=\"wp-block-heading has-large-font-size\">I. Nguy\u00ean t\u1eafc ch\u00ednh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc bi th\u00e9p<\/h2><p><\/p><p><strong>\u0110\u1ed9 c\u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u<\/strong>:V\u1eadt li\u1ec7u nghi\u1ec1n c\u00e0ng c\u1ee9ng th\u00ec bi th\u00e9p ph\u1ea3i c\u00e0ng l\u1edbn.<\/p><p><\/p><p><strong>\u0110\u01b0\u1eddng k\u00ednh m\u00e1y nghi\u1ec1n<\/strong>:\u0110\u1ed1i v\u1edbi c\u00e1c m\u00e1y nghi\u1ec1n l\u1edbn h\u01a1n, l\u1ef1c t\u00e1c \u0111\u1ed9ng c\u00e0ng l\u1edbn th\u00ec c\u00e0ng c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng nh\u1eefng vi\u00ean bi th\u00e9p nh\u1ecf h\u01a1n.<\/p><p><\/p><p><strong>Lo\u1ea1i ph\u00e2n v\u00f9ng<\/strong>:Khi s\u1eed d\u1ee5ng v\u00e1ch ng\u0103n \u0111\u00f4i, c\u00e1c vi\u00ean bi th\u00e9p ph\u1ea3i nh\u1ecf h\u01a1n so v\u1edbi c\u00e1c vi\u00ean bi th\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong v\u00e1ch ng\u0103n \u0111\u01a1n c\u00f3 c\u00f9ng m\u1ed9t ph\u1ea7n x\u1ea3.<\/p><p><\/p><p><strong>Ph\u00e2n ph\u1ed1i b\u00f3ng<\/strong>: Th\u00f4ng th\u01b0\u1eddng, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng ph\u00e2n ph\u1ed1i b\u00f3ng b\u1ed1n c\u1ea5p. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn h\u01a1n v\u00e0 nh\u1ecf h\u01a1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng \u00edt h\u01a1n, trong khi c\u00e1c qu\u1ea3 b\u00f3ng c\u1ee1 trung b\u00ecnh ph\u1ed5 bi\u1ebfn h\u01a1n. N\u00f3i c\u00e1ch kh\u00e1c, c\u00f3 &quot;\u00edt h\u01a1n \u1edf hai \u0111\u1ea7u v\u00e0 nhi\u1ec1u h\u01a1n \u1edf gi\u1eefa&quot;.<\/p><p><\/p><h2 class=\"wp-block-heading has-large-font-size\">II. T\u1ef7 l\u1ec7 bi th\u00e9p cho hi\u1ec7u su\u1ea5t nghi\u1ec1n cao<\/h2><p><\/p><p>\u0110\u1ec3 c\u00f3 hi\u1ec7u qu\u1ea3 nghi\u1ec1n t\u1ed1i \u01b0u, t\u1ef7 l\u1ec7 bi th\u00e9p sau \u0111\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 l\u00fd t\u01b0\u1edfng. S\u1ef1 c\u00e2n b\u1eb1ng n\u00e0y \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng kinh t\u1ebf nh\u1ea5t c\u1ee7a m\u00e1y nghi\u1ec1n bi:<\/p><p><\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u0110\u01b0\u1eddng k\u00ednh bi th\u00e9p (mm)<\/strong><\/td><td><strong>\u03a6100<\/strong><\/td><td><strong>\u03a680<\/strong><\/td><td><strong>\u03a660<\/strong><\/td><td><strong>\u03a640<\/strong><\/td><td><strong>\u03a620<\/strong><\/td><\/tr><tr><td>T\u1ea3i tr\u1ecdng kh\u1ed1i l\u01b0\u1ee3ng\/t\u1ed5ng c\u1ed9ng (%)<\/td><td>7.50%<\/td><td>6.90%<\/td><td>33.50%<\/td><td>30.10%<\/td><td>22%<\/td><\/tr><\/tbody><\/table><\/figure><p><\/p><p class=\"has-large-font-size\">III. C\u00e1ch Th\u00eam Bi Th\u00e9p D\u1ef1a Tr\u00ean T\u1ef7 L\u1ec7 K\u00edch Th\u01b0\u1edbc<\/p><p><\/p><p>Khi m\u00e1y nghi\u1ec1n bi m\u1edbi \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t l\u1ea7n \u0111\u1ea7u, m\u00e1y s\u1ebd tr\u1ea3i qua giai \u0111o\u1ea1n ch\u1ea1y r\u00e0. Trong th\u1eddi gian n\u00e0y, t\u1ea3i tr\u1ecdng ban \u0111\u1ea7u c\u1ee7a bi th\u00e9p ph\u1ea3i b\u1eb1ng kho\u1ea3ng 80% c\u00f4ng su\u1ea5t t\u1ed1i \u0111a c\u1ee7a m\u00e1y nghi\u1ec1n. C\u00f3 th\u1ec3 th\u00eam bi th\u00e9p theo t\u1ef7 l\u1ec7 v\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a ch\u00fang (v\u00ed d\u1ee5: \u03a6120mm, \u03a6100mm, \u03a680mm, \u03a660mm, \u03a640mm), \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a tr\u00ean nhu c\u1ea7u v\u1eadn h\u00e0nh c\u1ee7a m\u00e1y nghi\u1ec1n.<\/p><p><\/p><p>T\u1ea3i v\u00e0 \u0111\u1ecbnh c\u1ee1 bi th\u00e9p trong m\u00e1y nghi\u1ec1n bi<\/p><p><\/p><p><strong>L\u01b0\u1ee3ng t\u1ea3i bi th\u00e9p<\/strong>: T\u1ed5ng l\u01b0\u1ee3ng bi t\u1ea3i thay \u0111\u1ed5i t\u00f9y theo model m\u00e1y nghi\u1ec1n bi. V\u00ed d\u1ee5, m\u00e1y nghi\u1ec1n bi MQG1500\u00d73000 (c\u00f3 c\u00f4ng su\u1ea5t x\u1eed l\u00fd 100-150 t\u1ea5n) c\u00f3 l\u01b0\u1ee3ng bi t\u1ea3i t\u1ed1i \u0111a l\u00e0 9,5-10 t\u1ea5n. Khi th\u00eam bi th\u00e9p l\u1ea7n \u0111\u1ea7u ti\u00ean, ph\u00e2n ph\u1ed1i th\u01b0\u1eddng nh\u01b0 sau:<\/p><p><\/p><ul class=\"wp-block-list\"><li>Bi l\u1edbn (\u03a6120mm v\u00e0 \u03a6100mm): 30%-40%<\/li><li>Bi trung b\u00ecnh (\u03a680mm): 30%-40%<\/li><li>Bi nh\u1ecf (\u03a660mm v\u00e0 \u03a640mm): 30%<\/li><\/ul><p><\/p><p>Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a bi th\u00e9p \u0111\u01b0\u1ee3c th\u00eam v\u00e0o ph\u1ea3i d\u1ef1a tr\u00ean ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a ch\u00fang. Bi th\u00e9p ch\u1ea5t l\u01b0\u1ee3ng cao, ch\u1ed1ng m\u00e0i m\u00f2n l\u00e0 t\u1ed1t nh\u1ea5t. L\u01b0\u1ee3ng bi th\u00e9p l\u00fd t\u01b0\u1edfng l\u00e0 0,8kg cho m\u1ed7i t\u1ea5n qu\u1eb7ng \u0111\u1ed1i v\u1edbi bi ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t, trong khi bi th\u00e9p th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 c\u1ea7n 1-1,2kg cho m\u1ed7i t\u1ea5n qu\u1eb7ng.<\/p><p><\/p><p><strong>T\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc bi th\u00e9p<\/strong>: K\u00edch th\u01b0\u1edbc c\u1ee7a c\u00e1c vi\u00ean bi th\u00e9p \u0111\u01b0\u1ee3c th\u00eam v\u00e0o ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a m\u00e1y nghi\u1ec1n bi:<\/p><p><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed1i v\u1edbi m\u00e1y nghi\u1ec1n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf h\u01a1n 2500mm, s\u1eed d\u1ee5ng bi \u03a6100mm, \u03a680mm v\u00e0 \u03a660mm.<\/li><li>\u0110\u1ed1i v\u1edbi m\u00e1y nghi\u1ec1n c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n 2500mm, s\u1eed d\u1ee5ng bi \u03a6120mm, \u03a6100mm v\u00e0 \u03a680mm.<\/li><\/ul><p><\/p><h2 class=\"wp-block-heading has-large-font-size\">IV. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u m\u00e0i ch\u1ecbu m\u00e0i m\u00f2n (bi m\u00e0i)<\/h2><p><\/p><p>N\u0103m 1994, ng\u00e0nh v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng Trung Qu\u1ed1c \u0111\u00e3 thi\u1ebft l\u1eadp ti\u00eau chu\u1ea9n JC\/T535-94 \u201cBi nghi\u1ec1n \u0111\u00fac h\u1ee3p kim crom cho ng\u00e0nh v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng\u201d. Ti\u00eau chu\u1ea9n n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c tinh ch\u1ec9nh th\u00e0nh ti\u00eau chu\u1ea9n qu\u1ed1c gia GB\/T17445-1998 \u201cBi nghi\u1ec1n \u0111\u00fac\u201d, trong \u0111\u00f3 n\u00eau r\u00f5 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111\u1ed1i v\u1edbi bi crom cao, bi crom trung b\u00ecnh, bi crom th\u1ea5p v\u00e0 bi gang d\u1ebbo bainite.<\/p><p><\/p><h2 class=\"wp-block-heading has-large-font-size\">V. T\u00ednh ch\u1ea5t c\u1ee7a bi nghi\u1ec1n ch\u1ea5t l\u01b0\u1ee3ng cao<\/h2><p><\/p><p>Bi nghi\u1ec1n ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t ph\u1ea3i c\u00f3 nh\u1eefng \u0111\u1eb7c t\u00ednh ch\u00ednh sau:<\/p><p><\/p><p><strong><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wear\">M\u1eb7c<\/a> S\u1ee9c ch\u1ed1ng c\u1ef1<\/strong>: Bi nghi\u1ec1n ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu nhi\u1ec1u d\u1ea1ng m\u00e0i m\u00f2n kh\u00e1c nhau, bao g\u1ed3m c\u1eaft, bi\u1ebfn d\u1ea1ng v\u00e0 bong tr\u00f3c do m\u1ecfi. \u0110\u1ed1i v\u1edbi m\u00e0i m\u00f2n do c\u1eaft, \u0111\u1ed9 c\u1ee9ng cao l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. \u0110\u1ed1i v\u1edbi bi\u1ebfn d\u1ea1ng v\u00e0 m\u00e0i m\u00f2n do m\u1ecfi, bi ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi do bi\u1ebfn d\u1ea1ng, m\u1ecfi do ti\u1ebfp x\u00fac v\u00e0 m\u1ecfi do va \u0111\u1eadp cao.<\/p><p><\/p><p><strong>\u0110\u1ed9 b\u1ec1n va \u0111\u1eadp<\/strong>:C\u00e1c bi nghi\u1ec1n ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp tuy\u1ec7t v\u1eddi, kh\u00f4ng b\u1ecb v\u1ee1 khi va \u0111\u1eadp nhi\u1ec1u l\u1ea7n.<\/p><p><\/p><p><strong>\u0110\u1ed9 c\u1ee9ng<\/strong>:C\u00e1c qu\u1ea3 b\u00f3ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng qu\u1ea3 b\u00f3ng l\u1edbn (\u03a6100mm), ph\u1ea3i c\u00f3 \u0111\u1ed9 c\u1ee9ng \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean b\u1ec1 m\u1eb7t \u0111\u1ec3 tr\u00e1nh m\u1ea5t \u0111\u1ed9 tr\u00f2n v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t nh\u1ea5t qu\u00e1n.<\/p><p><\/p><p><strong>Ch\u1ea5t l\u01b0\u1ee3ng luy\u1ec7n kim<\/strong>: Bi nghi\u1ec1n ch\u1ea5t l\u01b0\u1ee3ng cao ph\u1ea3i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo c\u00e1c ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh, kh\u00f4ng c\u00f3 khuy\u1ebft t\u1eadt \u0111\u00fac nh\u01b0 l\u1eabn x\u1ec9 ho\u1eb7c l\u1eabn c\u00e1t.<\/p><p><\/p><p>\u0110\u1ed1i v\u1edbi bu\u1ed3ng nghi\u1ec1n th\u00f4, n\u00ean s\u1eed d\u1ee5ng bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom cao, trong khi \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh nghi\u1ec1n m\u1ecbn, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom th\u1ea5p. Trong c\u00e1c \u1ee9ng d\u1ee5ng nghi\u1ec1n \u01b0\u1edbt, n\u00ean s\u1eed d\u1ee5ng bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom th\u1ea5p ho\u1eb7c bi th\u00e9p r\u00e8n v\u00ec kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom cao k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n \u0103n m\u00f2n. \u0110\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, bi \u0111\u00fac kim lo\u1ea1i \u0111\u01b0\u1ee3c coi l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t.<\/p><p><\/p><h2 class=\"wp-block-heading has-large-font-size\">VI. T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng n\u1ea1p b\u00f3ng<\/h2><p><\/p><p>M\u1ed9t h\u1ec7 th\u1ed1ng n\u1ea1p bi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 c\u1ee7a m\u00e1y nghi\u1ec1n. N\u00f3 bao g\u1ed3m m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1:<\/p><p><\/p><ul class=\"wp-block-list\"><li><strong>Ch\u1ea5t l\u01b0\u1ee3ng bi th\u00e9p<\/strong>:\u0110i\u1ec1u n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1eadt \u0111\u1ed9, \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a bi th\u00e9p.<\/li><li><strong>K\u00edch th\u01b0\u1edbc bi th\u00e9p<\/strong>:Nh\u1eefng vi\u00ean bi c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n t\u1ea1o ra l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u1edbn h\u01a1n, trong khi nh\u1eefng vi\u00ean bi nh\u1ecf h\u01a1n gi\u00fap nghi\u1ec1n c\u00e1c h\u1ea1t qu\u1eb7ng m\u1ecbn h\u01a1n b\u1eb1ng c\u00e1ch t\u0103ng s\u1ed1 l\u1ea7n va ch\u1ea1m tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian.<\/li><li><strong>T\u1ef7 l\u1ec7 l\u1ea5p \u0111\u1ea7y b\u00f3ng<\/strong>:\u0110\u01b0\u1eddng k\u00ednh b\u00f3ng c\u00e0ng nh\u1ecf (khi t\u1ed1c \u0111\u1ed9 n\u1ea1p kh\u00f4ng \u0111\u1ed5i) th\u00ec s\u1ed1 l\u01b0\u1ee3ng b\u00f3ng c\u00e0ng nhi\u1ec1u v\u00e0 do \u0111\u00f3 t\u00e1c \u0111\u1ed9ng c\u00e0ng th\u01b0\u1eddng xuy\u00ean.<\/li><\/ul><p><\/p><p>\u0110\u1ed1i v\u1edbi qu\u1eb7ng c\u1ee9ng, th\u00f4, c\u1ea7n c\u00f3 bi c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n, m\u1eadt \u0111\u1ed9 cao \u0111\u1ec3 nghi\u1ec1n t\u1ed1t h\u01a1n. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ea1t qu\u1eb7ng m\u1ecbn, c\u1ea7n c\u00f3 bi nh\u1ecf h\u01a1n \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 nghi\u1ec1n. Hi\u1ec7n nay, m\u1ed9t s\u1ed1 m\u00e1y tuy\u1ec3n qu\u1eb7ng \u1edf Trung Qu\u1ed1c b\u1ed5 sung bi th\u00e9p \u0111\u01b0\u1eddng k\u00ednh 100mm b\u1ea5t k\u1ec3 k\u00edch th\u01b0\u1edbc qu\u1eb7ng, \u0111i\u1ec1u n\u00e0y kh\u00f4ng hi\u1ec7u qu\u1ea3 v\u00e0 d\u1eabn \u0111\u1ebfn nghi\u1ec1n qu\u00e1 m\u1ee9c v\u00e0 t\u0103ng m\u1ee9c ti\u00eau th\u1ee5 bi th\u00e9p. Bi l\u1edbn h\u01a1n s\u1ebd m\u00f2n nhanh h\u01a1n, d\u1eabn \u0111\u1ebfn chi ph\u00ed cao h\u01a1n.<\/p><p><\/p><h3 class=\"wp-block-heading\">G\u1ee3i \u00fd thay th\u1ebf bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng Crom th\u1ea5p v\u00e0 bi r\u00e8n b\u1eb1ng bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng Crom cao<\/h3><p><\/p><p>Khi c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p theo \u0111u\u1ed5i nh\u1eefng ti\u1ebfn b\u1ed9 c\u00f4ng ngh\u1ec7 \u0111\u1ec3 t\u0103ng n\u0103ng su\u1ea5t v\u00e0 gi\u1ea3m chi ph\u00ed, vi\u1ec7c thay th\u1ebf c\u00e1c vi\u00ean bi th\u00e9p r\u00e8n v\u00e0 c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom th\u1ea5p b\u1eb1ng c\u00e1c vi\u00ean bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom cao \u0111ang tr\u1edf th\u00e0nh m\u1ed9t c\u1ea3i ti\u1ebfn thi\u1ebft y\u1ebfu.<\/p><p><\/p><p>Trong khi bi th\u00e9p r\u00e8n v\u00e0 bi crom th\u1ea5p \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 s\u1ea3n xu\u1ea5t xi m\u0103ng, nh\u00e0 m\u00e1y nhi\u1ec7t \u0111i\u1ec7n v\u00e0 khai th\u00e1c qu\u1eb7ng s\u1eaft, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a ch\u00fang th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7. M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc \u0111\u00e3 c\u1ed1 g\u1eafng thay th\u1ebf bi th\u00e9p r\u00e8n v\u00e0 bi crom th\u1ea5p b\u1eb1ng bi \u0111\u00fac crom cao. Tuy nhi\u00ean, nh\u1eefng n\u1ed7 l\u1ef1c n\u00e0y \u0111\u00e3 b\u1ecb c\u1ea3n tr\u1edf b\u1edfi ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m k\u00e9m, thi\u1ebfu kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 th\u1ec9nh tho\u1ea3ng b\u1ecb v\u1ee1, khi\u1ebfn ch\u00fang kh\u00f4ng kh\u1ea3 thi v\u1ec1 m\u1eb7t kinh t\u1ebf.<\/p><p><\/p><p>B\u1ea5t ch\u1ea5p nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, vi\u1ec7c thay th\u1ebf bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom th\u1ea5p v\u00e0 bi r\u00e8n b\u1eb1ng bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom cao l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn l\u1edbn, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u00f3 \u0111i\u1ec1u ki\u1ec7n nghi\u1ec1n kh\u1eaft khe. \u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p h\u01b0\u1edbng t\u1edbi t\u0103ng tr\u01b0\u1edfng, vi\u1ec7c c\u1ea3i ti\u1ebfn li\u00ean t\u1ee5c ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 gi\u1ea3m chi ph\u00ed l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ee3i \u00edch \u0111\u1ea7y \u0111\u1ee7.<\/p><p><\/p><p>\u1ede nhi\u1ec1u th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i, bi \u0111\u00fac h\u1ee3p kim crom cao \u0111\u00e3 l\u00e0 ti\u00eau chu\u1ea9n. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e3 ph\u00e1t tri\u1ec3n bi c\u00f3 \u0111\u1ed9 c\u1ee9ng cao, h\u00e0m l\u01b0\u1ee3ng crom cao, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1ed1ng va \u0111\u1eadp v\u00e0 ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi. B\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 quy tr\u00ecnh x\u1eed l\u00fd nhi\u1ec7t, nh\u1eefng bi n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c:<\/p><p><\/p><ul class=\"wp-block-list\"><li>\u0110\u1ed9 c\u1ee9ng (HRC) l\u1edbn h\u01a1n 56<\/li><li>Gi\u00e1 tr\u1ecb va \u0111\u1eadp \u22654J\/cm\u00b2<\/li><li>\u0110\u1ed9 b\u1ec1n khi r\u01a1i h\u01a1n 10.000 l\u1ea7n<\/li><li>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao h\u01a1n g\u1ea5p \u0111\u00f4i so v\u1edbi bi ti\u00eau chu\u1ea9n c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom th\u1ea5p<\/li><\/ul><p><\/p><p>S\u1ef1 \u0111\u1ed5i m\u1edbi n\u00e0y l\u00e0m n\u1ed5i b\u1eadt kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a c\u00e1c vi\u00ean bi c\u00f3 h\u00e0m l\u01b0\u1ee3ng crom cao, \u0111\u01b0a ch\u00fang tr\u1edf th\u00e0nh t\u01b0\u01a1ng lai c\u1ee7a v\u1eadt li\u1ec7u nghi\u1ec1n trong ng\u00e0nh.<\/p><p><\/p><h2 class=\"wp-block-heading has-large-font-size\">VII. C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh trong ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n ph\u1ed1i b\u00f3ng hai giai \u0111o\u1ea1n<\/h2><p><\/p><p>Khi s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n ph\u1ed1i bi hai giai \u0111o\u1ea1n trong m\u00e1y nghi\u1ec1n, c\u1ea7n ph\u1ea3i xem x\u00e9t m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 quan tr\u1ecdng sau:<\/p><p><\/p><p><strong>\u0110\u01b0\u1eddng k\u00ednh b\u00f3ng l\u1edbn<\/strong>: T\u01b0\u01a1ng t\u1ef1 nh\u01b0 ph\u00e2n ph\u1ed1i bi nhi\u1ec1u giai \u0111o\u1ea1n, vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng k\u00ednh bi l\u1edbn ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o m\u00e1y nghi\u1ec1n. Tuy nhi\u00ean, trong ph\u01b0\u01a1ng ph\u00e1p hai giai \u0111o\u1ea1n, \u0111\u01b0\u1eddng k\u00ednh d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u1ea1i di\u1ec7n, l\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t chi\u1ebfm t\u1ef7 l\u1ec7 l\u1edbn nh\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u. Trong th\u1ef1c t\u1ebf, \u0111\u01b0\u1eddng k\u00ednh bi th\u1ee9 c\u1ea5p t\u1eeb ph\u00e2n ph\u1ed1i nhi\u1ec1u giai \u0111o\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng l\u00e0m tham chi\u1ebfu. V\u00ed d\u1ee5, n\u1ebfu \u0111\u01b0\u1eddng k\u00ednh bi t\u1ed1i \u0111a trong ph\u00e2n ph\u1ed1i nhi\u1ec1u giai \u0111o\u1ea1n l\u00e0 100mm, th\u00ec bi th\u00e9p \u03a690mm s\u1ebd \u0111\u01b0\u1ee3c ch\u1ecdn cho ph\u00e2n ph\u1ed1i bi th\u1ee9 c\u1ea5p.<\/p><p><\/p><p><strong>T\u1ef7 l\u1ec7 b\u00f3ng<\/strong>: T\u1ef7 l\u1ec7 gi\u1eefa c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn v\u00e0 nh\u1ecf ph\u1ea3i \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng vi\u1ec7c th\u00eam c\u00e1c qu\u1ea3 b\u00f3ng nh\u1ecf h\u01a1n kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 l\u00e0m \u0111\u1ea7y c\u1ee7a c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn h\u01a1n. Th\u00f4ng th\u01b0\u1eddng, c\u00e1c qu\u1ea3 b\u00f3ng nh\u1ecf ph\u1ea3i chi\u1ebfm t\u1eeb 3% \u0111\u1ebfn 5% tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn. Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, n\u00ean b\u1eaft \u0111\u1ea7u v\u1edbi gi\u1edbi h\u1ea1n d\u01b0\u1edbi (3%) v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo c\u00e1c \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t c\u1ee5 th\u1ec3.<\/p><p><\/p><p><strong>\u0110\u01b0\u1eddng k\u00ednh qu\u1ea3 b\u00f3ng nh\u1ecf<\/strong>: K\u00edch th\u01b0\u1edbc c\u1ee7a c\u00e1c qu\u1ea3 b\u00f3ng nh\u1ecf ph\u1ee5 thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn h\u01a1n, ngh\u0129a l\u00e0 n\u00f3 li\u00ean quan \u0111\u1ebfn \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn. Theo h\u01b0\u1edbng d\u1eabn c\u1ee7a ng\u00e0nh, \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a c\u00e1c qu\u1ea3 b\u00f3ng nh\u1ecf ph\u1ea3i n\u1eb1m trong kho\u1ea3ng t\u1eeb 13% \u0111\u1ebfn 33% \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a c\u00e1c qu\u1ea3 b\u00f3ng l\u1edbn.<\/p><p><\/p><figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">https:\/\/www.youtube.com\/watch?v=SVjfmdFpEOc<\/div><\/figure><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-53d817eb e-con-full e-flex e-con e-child\" data-id=\"53d817eb\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b271121 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"b271121\" data-element_type=\"widget\" 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value=\"vi\"\/><\/form>\n<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Khi s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n bi, nh\u1eefng ng\u01b0\u1eddi ch\u01b0a c\u00f3 nhi\u1ec1u kinh nghi\u1ec7m th\u01b0\u1eddng g\u1eb7p ph\u1ea3i m\u1ed9t v\u1ea5n \u0111\u1ec1: l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 th\u00eam bi th\u00e9p v\u00e0o m\u00e1y nghi\u1ec1n bi theo t\u1ef7 l\u1ec7 [\u2026]<\/p>","protected":false},"author":1,"featured_media":2471,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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