{"id":1548,"date":"2025-05-08T02:23:36","date_gmt":"2025-05-08T02:23:36","guid":{"rendered":"https:\/\/nbaem.com\/?p=1548"},"modified":"2025-05-08T02:24:20","modified_gmt":"2025-05-08T02:24:20","slug":"guide-to-rare-earth-magnets","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/guide-to-rare-earth-magnets\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm"},"content":{"rendered":"<h1>H\u01b0\u1edbng d\u1eabn v\u1ec1 Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm<\/h1>\n\n<p>Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm xu\u1ea5t hi\u1ec7n kh\u1eafp n\u01a1i\u2014t\u1eeb \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh c\u1ee7a b\u1ea1n \u0111\u1ebfn \u00f4 t\u00f4. Nh\u01b0ng h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi kh\u00f4ng bi\u1ebft \u0111i\u1ec1u g\u00ec l\u00e0m ch\u00fang kh\u00e1c bi\u1ec7t ho\u1eb7c t\u1ea1i sao ch\u00fang l\u1ea1i c\u00f3 gi\u00e1 cao h\u01a1n.<\/p>\n<p><strong>Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 nh\u1eefng nam ch\u00e2m v\u0129nh c\u1eedu m\u1ea1nh nh\u1ea5t, \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb h\u1ee3p kim c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm nh\u01b0 <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" title=\"nam ch\u00e2m neodymium\" href=\"https:\/\/nbaem.com\/vi\/products\/neodymium-magnet\/\">nam ch\u00e2m neodymium<\/a><\/span> v\u00e0 <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" title=\"samari coban\" href=\"https:\/\/nbaem.com\/vi\/products\/samarium-cobalt-magnets\/\">samari coban<\/a><\/span>, v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng hi\u1ec7u su\u1ea5t cao.<\/strong><\/p>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2022\/06\/neodymium-magnet-1.png\" alt=\"v\u1eadt li\u1ec7u nam ch\u00e2m\" width=\"740\" height=\"493\" \/><\/p>\n<p>Trong c\u00f4ng vi\u1ec7c c\u1ee7a t\u00f4i, t\u00f4i x\u1eed l\u00fd nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm h\u00e0ng ng\u00e0y. T\u00f4i \u0111\u00e3 th\u1ea5y ch\u00fang nh\u1ecf nh\u01b0 th\u1ebf n\u00e0o, nh\u01b0ng c\u0169ng r\u1ea5t m\u1ea1nh m\u1ebd. D\u00f9 l\u00e0 c\u00f4ng ngh\u1ec7 hay d\u1ee5ng c\u1ee5, l\u1ef1c t\u1eeb c\u1ee7a ch\u00fang kh\u00f4ng g\u00ec s\u00e1nh k\u1ecbp. H\u00e3y \u0111\u1ec3 t\u00f4i gi\u1edbi thi\u1ec7u t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n bi\u1ebft.<\/p>\n<h2><span style=\"color: #3366ff;\">Nam ch\u00e2m \u0111\u1ea5t l\u00e0 g\u00ec?<\/span><\/h2>\n<p>M\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng nghe th\u1ea5y \u201cnam ch\u00e2m \u0111\u1ea5t\u201d v\u00e0 ngh\u0129 \u0111\u00f3 l\u00e0 \u0111i\u1ec1u g\u00ec \u0111\u00f3 m\u1edbi m\u1ebb. Th\u1ef1c ra, n\u00f3 \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i ng\u00e0nh c\u00f4ng nghi\u1ec7p trong nhi\u1ec1u th\u1eadp k\u1ef7.<\/p>\n<p><strong>Nam ch\u00e2m \u0111\u1ea5t, hay nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm, \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm nh\u01b0 neodymium v\u00e0 samarium, v\u00e0 n\u1ed5i ti\u1ebfng v\u1edbi s\u1ee9c m\u1ea1nh t\u1eeb tr\u01b0\u1eddng cao c\u1ee7a ch\u00fang.<\/strong><\/p>\n<div id=\"attachment_1551\" style=\"width: 751px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-1551\" class=\"wp-image-1551\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth.jpg\" alt=\"\u0111\u1ea5t hi\u1ebfm\" width=\"741\" height=\"417\" srcset=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-200x113.jpg 200w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-300x169.jpg 300w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-400x225.jpg 400w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-600x338.jpg 600w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-768x432.jpg 768w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-800x450.jpg 800w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-1024x576.jpg 1024w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-1200x675.jpg 1200w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth-1536x864.jpg 1536w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Rare-earth.jpg 1920w\" sizes=\"(max-width: 741px) 100vw, 741px\" \/><p id=\"caption-attachment-1551\" class=\"wp-caption-text\">\u0111\u1ea5t hi\u1ebfm<\/p><\/div>\n<h3>\u0110i\u1ec1u g\u00ec l\u00e0m ch\u00fang tr\u1edf n\u00ean hi\u1ebfm?<\/h3>\n<p>C\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm xu\u1ea5t ph\u00e1t t\u1eeb chu\u1ed7i lanthanide trong b\u1ea3ng tu\u1ea7n ho\u00e0n. Nh\u1eefng kim lo\u1ea1i n\u00e0y kh\u00f4ng th\u1ef1c s\u1ef1 hi\u1ebfm v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng, nh\u01b0ng ch\u00fang kh\u00f3 khai th\u00e1c v\u00e0 ch\u1ebf bi\u1ebfn. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang c\u00f3 t\u00ean g\u1ecdi nh\u01b0 v\u1eady.<\/p>\n<h3>Hai lo\u1ea1i ch\u00ednh<\/h3>\n<p>C\u00f3 hai lo\u1ea1i nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm ph\u1ed5 bi\u1ebfn:<\/p>\n<ul>\n<li><strong>Nam ch\u00e2m neodymium (NdFeB)<\/strong>: \u0110\u01b0\u1ee3c l\u00e0m t\u1eeb neodymium, s\u1eaft v\u00e0 boron. R\u1ea5t m\u1ea1nh, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u1ee7 nickel \u0111\u1ec3 ch\u1ed1ng r\u1ec9 s\u00e9t.<\/li>\n<li><strong>Nam ch\u00e2m samarium-cobalt (SmCo)<\/strong>: \u0110\u01b0\u1ee3c l\u00e0m t\u1eeb samarium v\u00e0 cobalt. Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao h\u01a1n v\u00e0 ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t h\u01a1n.<\/li>\n<\/ul>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh nhanh:<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i<\/th>\n<th>Th\u00e0nh ph\u1ea7n<\/th>\n<th>M\u1ee9c \u0111\u1ed9 m\u1ea1nh<\/th>\n<th>Ch\u1ed1ng \u0103n m\u00f2n<\/th>\n<th>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9<\/th>\n<th>Gi\u00e1 th\u00e0nh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Neodymium (NdFeB)<\/td>\n<td>Nd + Fe + B<\/td>\n<td>R\u1ea5t cao<\/td>\n<td>Th\u1ea5p (c\u1ea7n ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7)<\/td>\n<td>Trung b\u00ecnh (~80\u2013200\u00b0C)<\/td>\n<td>Th\u1ea5p h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>Cobalt Samari (SmCo)<\/td>\n<td>Sm + Co<\/td>\n<td>Cao<\/td>\n<td>Xu\u1ea5t s\u1eafc<\/td>\n<td>Cao (~250\u2013350\u00b0C)<\/td>\n<td>Cao h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Ch\u00fang tr\u00f4ng nh\u1ecf, nh\u01b0ng \u0111\u1ed9 b\u1ec1n c\u1ee7a ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 chuy\u1ec7n \u0111\u00f9a. T\u00f4i \u0111\u00e3 t\u1eebng th\u1ea5y m\u1ed9t nam ch\u00e2m neodymium d\u00e0i 1 inch nh\u1ea3y qua b\u00e0n v\u00e0 d\u00ednh v\u00e0o m\u1ed9t chi\u1ebfc c\u1edd l\u00ea kim lo\u1ea1i. L\u1ea7n \u0111\u1ea7u ti\u00ean t\u00f4i \u0111\u00e3 gi\u1eadt m\u00ecnh. \u0110\u00f3 l\u00e0 l\u00fac t\u00f4i nh\u1eadn ra s\u1ee9c m\u1ea1nh c\u1ee7a ch\u00fang.<\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #3366ff;\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa nam ch\u00e2m \u0111\u1ea5t v\u00e0 nam ch\u00e2m th\u00f4ng th\u01b0\u1eddng l\u00e0 g\u00ec?<\/span><\/h2>\n<p>N\u1ebfu b\u1ea1n t\u1eebng s\u1eed d\u1ee5ng nam ch\u00e2m t\u1ee7 l\u1ea1nh v\u00e0 ngh\u0129 r\u1eb1ng, \u201cC\u00e1i n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t,\u201d th\u00ec b\u1ea1n ch\u01b0a g\u1eb7p ph\u1ea3i nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm.<\/p>\n<p><strong>Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm m\u1ea1nh h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c lo\u1ea1i nam ch\u00e2m th\u00f4ng th\u01b0\u1eddng nh\u01b0 <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" title=\"g\u1ed1m s\u1ee9\" href=\"https:\/\/nbaem.com\/vi\/products\/ceramic-magnet\/\">g\u1ed1m s\u1ee9<\/a><\/span> or<span style=\"color: #ff6600;\"> <a style=\"color: #ff6600;\" title=\"alnico\" href=\"https:\/\/nbaem.com\/vi\/products\/alnico-magnet\/\">alnico<\/a><\/span>, v\u00e0 c\u00f3 th\u1ec3 gi\u1eef t\u1ea3i tr\u1ecdng n\u1eb7ng h\u01a1n trong k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n.<\/strong><\/p>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2022\/05\/ferrite-magnet.png\" alt=\"\" width=\"748\" height=\"515\" \/><br \/>\nNam ch\u00e2m ferrite<\/p>\n<h3>Kho\u1ea3ng c\u00e1ch hi\u1ec7u su\u1ea5t<\/h3>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 m\u1ea1nh gi\u1eefa nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm v\u00e0 nam ch\u00e2m th\u00f4ng th\u01b0\u1eddng l\u00e0 r\u00f5 r\u1ec7t. M\u1ed9t nam ch\u00e2m neodymium nh\u1ecf c\u00f3 th\u1ec3 m\u1ea1nh g\u1ea5p 10 l\u1ea7n so v\u1edbi m\u1ed9t nam ch\u00e2m g\u1ed1m c\u00f9ng k\u00edch th\u01b0\u1edbc. \u0110\u00f3 l\u00e0 l\u00fd do c\u00e1c c\u00f4ng ty c\u00f4ng ngh\u1ec7 s\u1eed d\u1ee5ng ch\u00fang trong \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, \u1ed5 c\u1ee9ng v\u00e0 \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh theo lo\u1ea1i<\/h3>\n<p>H\u00e3y ph\u00e2n t\u00edch:<\/p>\n<table>\n<thead>\n<tr>\n<th>Thu\u1ed9c t\u00ednh<\/th>\n<th>Nam ch\u00e2m G\u1ed1m (Ferrite)<\/th>\n<th>Nam ch\u00e2m Alnico<\/th>\n<th>Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ed9 m\u1ea1nh t\u1eeb t\u00ednh<\/td>\n<td>Th\u1ea5p \u0111\u1ebfn Trung b\u00ecnh<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>R\u1ea5t cao<\/td>\n<\/tr>\n<tr>\n<td>Hi\u1ec7u qu\u1ea3 k\u00edch th\u01b0\u1edbc<\/td>\n<td>L\u1edbn<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Nh\u1ecf<\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Cao<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ed1ng \u0103n m\u00f2n<\/td>\n<td>T\u1ed1t<\/td>\n<td>K\u00e9m<\/td>\n<td>Thay \u0111\u1ed5i (NdFeB ph\u1ee7)<\/td>\n<\/tr>\n<tr>\n<td>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t<\/td>\n<td>Cao<\/td>\n<td>R\u1ea5t cao<\/td>\n<td>Trung b\u00ecnh \u0111\u1ebfn Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Tr\u01b0\u1edbc khi t\u00f4i hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t, t\u00f4i \u0111\u00e3 c\u1ed1 g\u1eafng s\u1eed d\u1ee5ng m\u1ed9t nam ch\u00e2m g\u1ed1m cho m\u1ed9t d\u1ef1 \u00e1n \u0111\u1ed9ng c\u01a1 nh\u1ecf. N\u00f3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t. Sau khi chuy\u1ec3n sang neodymium, \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n nhi\u1ec1u\u2014d\u00f9 nam ch\u00e2m nh\u1ecf h\u01a1n m\u1ed9t n\u1eeda.<\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #3366ff;\">Nam ch\u00e2m neodymium \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/span><\/h2>\n<p>H\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi kh\u00f4ng bi\u1ebft c\u00f3 bao nhi\u00eau th\u1ee9 d\u1ef1a v\u00e0o nh\u1eefng c\u1ed7 m\u00e1y nh\u1ecf b\u00e9 n\u00e0y.<\/p>\n<p><strong>Nam ch\u00e2m Neodymium \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, tai nghe, \u1ed5 c\u1ee9ng, thi\u1ebft b\u1ecb y t\u1ebf, turbine gi\u00f3 v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng kh\u00e1c.<\/strong><\/p>\n<div id=\"attachment_1552\" style=\"width: 762px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-1552\" class=\"wp-image-1552\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications.jpg\" alt=\"\u1ee8ng d\u1ee5ng c\u1ee7a nam ch\u00e2m\" width=\"752\" height=\"465\" srcset=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications-200x124.jpg 200w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications-300x186.jpg 300w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications-400x248.jpg 400w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications-600x371.jpg 600w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications-768x475.jpg 768w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications-800x495.jpg 800w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/05\/Applications.jpg 958w\" sizes=\"(max-width: 752px) 100vw, 752px\" \/><p id=\"caption-attachment-1552\" class=\"wp-caption-text\">s\u1eed d\u1ee5ng nam ch\u00e2m<\/p><\/div>\n<h3>\u1ee8ng d\u1ee5ng c\u00f3 nhu c\u1ea7u cao<\/h3>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c l\u0129nh v\u1ef1c ch\u00ednh t\u00f4i \u0111\u00e3 th\u1ea5y ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n<ul>\n<li><strong>Xe \u0111i\u1ec7n (EVs)<\/strong>: Nam ch\u00e2m Neodymium cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho \u0111\u1ed9ng c\u01a1 truy\u1ec1n l\u1ef1c.<\/li>\n<li><strong>Tuabin gi\u00f3<\/strong>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp.<\/li>\n<li><strong>\u0110i\u1ec7n t\u1eed<\/strong>: C\u00f3 trong loa, micro v\u00e0 \u1ed5 c\u1ee9ng.<\/li>\n<li><strong>Y t\u1ebf<\/strong>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e1y MRI v\u00e0 d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt.<\/li>\n<li><strong>D\u1ee5ng c\u1ee5 t\u1ef1 l\u00e0m v\u00e0 c\u00f4ng nghi\u1ec7p<\/strong>: D\u1ee5ng c\u1ee5 gi\u1eef ch\u1eb7t m\u1ea1nh m\u1ebd, k\u1eb9p nam ch\u00e2m, c\u1ea3m bi\u1ebfn.<\/li>\n<\/ul>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/th>\n<th>L\u00fd do s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00d4 t\u00f4<\/td>\n<td>\u0110\u1ed9ng c\u01a1 xe \u0111i\u1ec7n, c\u1ea3m bi\u1ebfn ABS<\/td>\n<td>K\u00edch th\u01b0\u1edbc nh\u1ecf + \u0111\u1ed9 m\u1ea1nh cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n t\u1eed<\/td>\n<td>Tai nghe, \u1ed5 c\u1ee9ng<\/td>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9, hi\u1ec7u su\u1ea5t m\u1ea1nh m\u1ebd<\/td>\n<\/tr>\n<tr>\n<td>Y t\u1ebf<\/td>\n<td>MRI, d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt<\/td>\n<td>\u1ed4n \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady<\/td>\n<\/tr>\n<tr>\n<td>N\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o<\/td>\n<td>Tuabin gi\u00f3<\/td>\n<td>B\u1ec1n b\u1ec9 v\u00e0 hi\u1ec7u qu\u1ea3<\/td>\n<\/tr>\n<tr>\n<td>C\u00f4ng nghi\u1ec7p<\/td>\n<td>M\u00e1y t\u00e1ch t\u1eeb, n\u00e2ng<\/td>\n<td>L\u1ef1c gi\u1eef ch\u1eb7t cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>L\u1ea7n \u0111\u1ea7u ti\u00ean t\u00f4i th\u1ea5y m\u1ed9t chi\u1ebfc ho\u1ea1t \u0111\u1ed9ng l\u00e0 trong m\u1ed9t c\u00f4ng vi\u1ec7c s\u1eeda ch\u1eefa loa. \u00c2m thanh y\u1ebfu khi s\u1eed d\u1ee5ng nam ch\u00e2m g\u1ed1m. Thay b\u1eb1ng phi\u00ean b\u1ea3n neodymium\u2014\u00e2m thanh r\u00f5 r\u00e0ng h\u01a1n ngay l\u1eadp t\u1ee9c v\u00e0 bass t\u1ed1t h\u01a1n.<\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #3366ff;\">T\u1ea1i sao nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u1ea1i \u0111\u1eaft nh\u01b0 v\u1eady?<\/span><\/h2>\n<p>Kh\u00e1ch h\u00e0ng th\u01b0\u1eddng h\u1ecfi t\u00f4i t\u1ea1i sao nh\u1eefng chi\u1ebfc nam ch\u00e2m n\u00e0y l\u1ea1i \u0111\u1eaft nh\u01b0 v\u1eady. C\u00e2u tr\u1ea3 l\u1eddi c\u00f3 nhi\u1ec1u t\u1ea7ng l\u1edbp.<\/p>\n<p><strong>Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm \u0111\u1eaft \u0111\u1ecf v\u00ec qu\u00e1 tr\u00ecnh khai th\u00e1c ph\u1ee9c t\u1ea1p, ngu\u1ed3n cung to\u00e0n c\u1ea7u h\u1ea1n ch\u1ebf v\u00e0 chi ph\u00ed x\u1eed l\u00fd, tinh ch\u1ebf cao.<\/strong><\/p>\n<h3>Kh\u00f3 kh\u0103n v\u1ec1 nguy\u00ean li\u1ec7u th\u00f4<\/h3>\n<p>Khai th\u00e1c kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm nh\u01b0 neodymium ho\u1eb7c samarium \u0111\u00f2i h\u1ecfi x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t. Nh\u1eefng nguy\u00ean li\u1ec7u n\u00e0y kh\u00f4ng th\u1ef1c s\u1ef1 hi\u1ebfm, nh\u01b0ng ch\u00fang ph\u00e2n t\u00e1n v\u00e0 kh\u00f3 tinh ch\u1ebf. Ph\u1ea7n l\u1edbn ngu\u1ed3n cung to\u00e0n c\u1ea7u \u0111\u1ebfn t\u1eeb m\u1ed9t s\u1ed1 \u00edt qu\u1ed1c gia, \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng r\u1ee7i ro th\u1ecb tr\u01b0\u1eddng v\u00e0 gi\u00e1 c\u1ea3.<\/p>\n<h3>Ph\u1ee9c t\u1ea1p trong s\u1ea3n xu\u1ea5t<\/h3>\n<p>Nam ch\u00e2m ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u1edf \u0111\u1ed9 tinh khi\u1ebft cao, nung ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 ki\u1ec3m so\u00e1t, v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u1ee7 l\u1edbp ch\u1ed1ng \u0103n m\u00f2n (\u0111\u1eb7c bi\u1ec7t l\u00e0 NdFeB). M\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u l\u00e0m t\u0103ng chi ph\u00ed. Th\u00eam v\u00e0o \u0111\u00f3, c\u00e1c quy \u0111\u1ecbnh v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u00e0 ki\u1ec3m so\u00e1t xu\u1ea5t kh\u1ea9u (nh\u01b0 ch\u00ednh s\u00e1ch c\u1ee7a Vi\u1ec7t Nam \u0111\u1ebfn n\u0103m 2025) \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ngu\u1ed3n cung v\u00e0 gi\u00e1 c\u1ea3.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u00e1:<\/p>\n<table>\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Chi ph\u00ed nguy\u00ean li\u1ec7u th\u00f4<\/td>\n<td>Kim lo\u1ea1i \u0111\u1ea5t hi\u1ebfm \u0111\u1eaft \u0111\u1ecf \u0111\u1ec3 khai th\u00e1c v\u00e0 tinh ch\u1ebf<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f3 kh\u0103n trong x\u1eed l\u00fd<\/td>\n<td>Y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 nung ch\u1ea3y v\u00e0 ph\u1ee7 l\u1edbp cao c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>R\u1ee7i ro chu\u1ed7i cung \u1ee9ng<\/td>\n<td>H\u1ea1n ch\u1ebf nh\u00e0 cung c\u1ea5p, ch\u00ednh s\u00e1ch th\u01b0\u01a1ng m\u1ea1i v\u00e0 gi\u1edbi h\u1ea1n xu\u1ea5t kh\u1ea9u<\/td>\n<\/tr>\n<tr>\n<td>Nhu c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t<\/td>\n<td>S\u1eed d\u1ee5ng trong c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn v\u00e0 h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng xanh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u00f4i khi t\u00f4i gi\u1ea3i th\u00edch nh\u01b0 th\u1ebf n\u00e0y: mua m\u1ed9t nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm gi\u1ed1ng nh\u01b0 mua m\u1ed9t \u0111\u1ed9ng c\u01a1 nh\u1ecf. N\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng tr\u00f4ng ph\u1ee9c t\u1ea1p, nh\u01b0ng n\u00f3 ch\u1ee9a \u0111\u1ef1ng s\u1ee9c m\u1ea1nh v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #3366ff;\">K\u1ebft lu\u1eadn<\/span><\/h2>\n<p>Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm nh\u1ecf nh\u01b0ng m\u1ea1nh m\u1ebd. S\u1ee9c m\u1ea1nh, hi\u1ec7u qu\u1ea3 v\u00e0 ph\u1ea1m vi s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh thi\u1ebft y\u1ebfu cho c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>\n<hr \/>\n<h2><\/h2>\n<h2>Vai tr\u00f2 c\u1ee7a t\u00f4i<\/h2>\n<h3>V\u1ec1 t\u00f4i<\/h3>\n<p><strong>T\u00ean th\u01b0\u01a1ng hi\u1ec7u<\/strong>: Nam Ch\u00e2m NBAEM<br \/>\n<strong>Kh\u1ea9u hi\u1ec7u<\/strong>: Chuy\u00ean v\u1ec1 v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<br \/>\n<strong>Trang web<\/strong>: <a href=\"https:\/\/nbaem.com\/vi\/\">nbaem.com<\/a><\/p>\n<p><strong>S\u1ee9 m\u1ec7nh c\u1ee7a ch\u00fang t\u00f4i<\/strong>:<br \/>\nNam ch\u00e2m NBAEM l\u00e0 m\u1ed9t c\u00f4ng ty nam ch\u00e2m v\u1edbi 15 n\u0103m kinh nghi\u1ec7m. Ch\u00fang t\u00f4i chuy\u00ean v\u1ec1 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u t\u1eeb t\u00ednh kh\u00e1c nhau, nh\u1eb1m gi\u00fap t\u1eebng kh\u00e1ch h\u00e0ng t\u1ea1o ra c\u00e1c nam ch\u00e2m t\u00f9y ch\u1ec9nh ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n t\u1eeb t\u00ednh ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a h\u1ecd. Ch\u00fang t\u00f4i cung c\u1ea5p d\u1ecbch v\u1ee5 tr\u01b0\u1edbc b\u00e1n h\u00e0ng v\u00e0 sau b\u00e1n h\u00e0ng ch\u1ea5t l\u01b0\u1ee3ng cao, c\u00f9ng v\u1edbi h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt li\u00ean quan.<\/p>\n<p><strong>V\u1ec1 t\u00f4i<\/strong>:<br \/>\nNBAEM \u0111\u01b0\u1ee3c th\u00e0nh l\u1eadp b\u1edfi t\u00f4i\u2014m\u1ed9t chuy\u00ean gia \u0111am m\u00ea trong ng\u00e0nh nam ch\u00e2m. T\u00f4i b\u1eaft \u0111\u1ea7u s\u1ef1 nghi\u1ec7p t\u1ea1i m\u1ed9t nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t nam ch\u00e2m v\u00e0 sau \u0111\u00f3 th\u00e0nh l\u1eadp m\u1ed9t c\u00f4ng ty th\u00e0nh c\u00f4ng v\u1ec1 nam ch\u00e2m v\u00e0 l\u1eafp r\u00e1p t\u1eeb t\u00ednh. Qua h\u00e0nh tr\u00ecnh trong ng\u00e0nh nam ch\u00e2m, t\u00f4i \u0111\u00e3 gi\u00fap nhi\u1ec1u kh\u00e1ch h\u00e0ng ph\u00e1t tri\u1ec3n doanh nghi\u1ec7p c\u1ee7a h\u1ecd. B\u1eb1ng c\u00e1ch chia s\u1ebb ki\u1ebfn th\u1ee9c v\u00e0 kinh nghi\u1ec7m c\u1ee7a m\u00ecnh, t\u00f4i mong mu\u1ed1n gi\u00fap kh\u00e1ch h\u00e0ng t\u00ecm ra gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p.<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn v\u1ec1 nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm xu\u1ea5t hi\u1ec7n \u1edf kh\u1eafp n\u01a1i\u2014t\u1eeb \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh c\u1ee7a b\u1ea1n \u0111\u1ebfn \u00f4 t\u00f4. Nh\u01b0ng h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi kh\u00f4ng bi\u1ebft \u0111i\u1ec1u g\u00ec l\u00e0m ch\u00fang kh\u00e1c bi\u1ec7t ho\u1eb7c t\u1ea1i sao ch\u00fang \u0111\u1eaft h\u01a1n. Nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm l\u00e0 lo\u1ea1i nam ch\u00e2m v\u0129nh c\u1eedu m\u1ea1nh nh\u1ea5t, \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb h\u1ee3p kim c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm nh\u01b0 neodymium v\u00e0<\/p>","protected":false},"author":1,"featured_media":1501,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/03\/disc.png","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=1548"}],"version-history":[{"count":11,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1548\/revisions"}],"predecessor-version":[{"id":1562,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1548\/revisions\/1562"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1501"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}