{"id":1924,"date":"2025-08-15T02:40:52","date_gmt":"2025-08-15T02:40:52","guid":{"rendered":"https:\/\/nbaem.com\/?p=1924"},"modified":"2025-08-15T03:15:00","modified_gmt":"2025-08-15T03:15:00","slug":"what-does-axially-magnetized-mean","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/what-does-axially-magnetized-mean\/","title":{"rendered":"\u00dd ngh\u0129a c\u1ee7a vi\u1ec7c nam ch\u00e2m theo tr\u1ee5c cho nam ch\u00e2m v\u00f2ng NdFeB"},"content":{"rendered":"<h2>Hi\u1ec3u v\u1ec1 H\u01b0\u1edbng \u0110\u1ecbnh H\u01b0\u1edbng T\u1eeb<\/h2>\n<p>H\u01b0\u1edbng t\u1eeb \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh c\u0103n ch\u1ec9nh c\u00e1c mi\u1ec1n t\u1eeb trong m\u1ed9t v\u1eadt li\u1ec7u sao cho c\u00e1c moment t\u1eeb c\u1ee7a ch\u00fang c\u00f9ng h\u01b0\u1edbng. Trong tr\u1ea1ng th\u00e1i kh\u00f4ng t\u1eeb, c\u00e1c mi\u1ec1n n\u00e0y c\u00f3 h\u01b0\u1edbng ng\u1eabu nhi\u00ean, l\u00e0m gi\u1ea3m t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a ch\u00fang. Khi b\u1ecb t\u1eeb, c\u00e1c mi\u1ec1n c\u0103n ch\u1ec9nh, t\u1ea1o ra m\u1ed9t tr\u01b0\u1eddng t\u1eeb m\u1ea1nh m\u1ebd, th\u1ed1ng nh\u1ea5t. \u0110\u00e2y l\u00e0 nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a nam ch\u00e2m v\u0129nh c\u1eedu v\u00e0 kh\u1ea3 n\u0103ng h\u00fat c\u00e1c v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh, nh\u01b0 \u0111\u00e3 gi\u1ea3i th\u00edch chi ti\u1ebft trong h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/nbaem.com\/ms\/what-is-permanent-magnetism%ef%bc%9f\/\" target=\"_blank\" rel=\"noopener\">t\u1eeb tr\u01b0\u1eddng v\u0129nh c\u1eedu l\u00e0 g\u00ec<\/a>.<\/p>\n<p>Nam ch\u00e2m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1eeb h\u00f3a theo c\u00e1c h\u01b0\u1edbng kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng. Ba lo\u1ea1i t\u1eeb h\u00f3a ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>T\u1eeb h\u00f3a theo tr\u1ee5c<\/strong> \u2013 C\u00e1c c\u1ef1c t\u1eeb n\u1eb1m \u1edf hai \u0111\u1ea7u ph\u1eb3ng c\u1ee7a nam ch\u00e2m, v\u1edbi tr\u01b0\u1eddng t\u1eeb ch\u1ea1y d\u1ecdc theo tr\u1ee5c trung t\u00e2m ho\u1eb7c tr\u1ee5c d\u00e0i c\u1ee7a n\u00f3.<\/li>\n<li><strong>T\u1eeb h\u00f3a theo \u0111\u01b0\u1eddng k\u00ednh<\/strong> \u2013 C\u00e1c c\u1ef1c n\u1eb1m \u1edf hai m\u1eb7t cong \u0111\u1ed1i di\u1ec7n c\u1ee7a m\u1ed9t nam ch\u00e2m h\u00ecnh tr\u1ee5, v\u00ec v\u1eady tr\u01b0\u1eddng t\u1eeb ch\u1ea1y qua \u0111\u01b0\u1eddng k\u00ednh.<\/li>\n<li><strong>T\u1eeb h\u00f3a theo b\u00e1n k\u00ednh<\/strong> \u2013 Tr\u01b0\u1eddng t\u1eeb t\u1ecfa ra ngo\u00e0i ho\u1eb7c h\u01b0\u1edbng v\u00e0o trung t\u00e2m, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nam ch\u00e2m v\u00f2ng cho c\u00e1c \u1ee9ng d\u1ee5ng quay \u0111\u1eb7c bi\u1ec7t.<\/li>\n<\/ul>\n<p>Hi\u1ec3u c\u00e1c h\u01b0\u1edbng n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft v\u00ec lo\u1ea1i t\u1eeb h\u00f3a \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1ch nam ch\u00e2m t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c v\u1eadt li\u1ec7u t\u1eeb kh\u00e1c, c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 h\u1ec7 th\u1ed1ng. Ch\u1ecdn \u0111\u00fang lo\u1ea1i t\u1eeb h\u00f3a \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 t\u1ed1i \u0111a trong \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n.<\/p>\n<h2>T\u1eeb 'axially magnetized' ngh\u0129a l\u00e0 g\u00ec<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/Axially_Magnetized_Magnet_Explanation_WBa.webp\" alt=\"Gi\u1ea3i th\u00edch v\u1ec1 nam ch\u00e2m t\u1eeb h\u01b0\u1edbng tr\u1ee5c\" \/><\/p>\n<p>An <strong>\u0111\u01b0\u1ee3c t\u1eeb tr\u01b0\u1eddng theo tr\u1ee5c<\/strong> nam ch\u00e2m l\u00e0 lo\u1ea1i nam ch\u00e2m \u0111\u01b0\u1ee3c t\u1eeb h\u00f3a d\u1ecdc theo <strong>tr\u1ee5c d\u00e0i c\u1ee7a n\u00f3<\/strong> \u2014 v\u1ec1 c\u01a1 b\u1ea3n, t\u1eeb m\u1ed9t m\u1eb7t ph\u1eb3ng c\u1ee7a nam ch\u00e2m th\u1eb3ng qua m\u1eb7t kia. Trong c\u1ea5u h\u00ecnh n\u00e0y, <strong>c\u1ef1c b\u1eafc<\/strong> n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng m\u1ed9t ph\u00eda, v\u00e0 <strong>c\u1ef1c nam<\/strong> n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng \u0111\u1ed1i di\u1ec7n.<\/p>\n<p>Lo\u1ea1i t\u1eeb tr\u01b0\u1eddng n\u00e0y ph\u1ed5 bi\u1ebfn nh\u1ea5t trong:<\/p>\n<ul>\n<li><strong>Nam ch\u00e2m h\u00ecnh tr\u1ee5<\/strong> (nh\u01b0 thanh v\u00e0 \u0111\u0129a)<\/li>\n<li><strong>Nam ch\u00e2m h\u00ecnh v\u00f2ng<\/strong> (l\u1ed7 \u1edf gi\u1eefa, c\u1ef1c t\u1eeb tr\u00ean m\u1eb7t ph\u1eb3ng)<\/li>\n<\/ul>\n<h3>H\u01b0\u1edbng c\u1ee7a T\u1eeb tr\u01b0\u1eddng trong Nam ch\u00e2m tr\u1ee5c<\/h3>\n<p>Trong m\u1ed9t nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c, c\u00e1c \u0111\u01b0\u1eddng t\u1eeb tr\u01b0\u1eddng ch\u1ea1y <strong>song song v\u1edbi tr\u1ee5c<\/strong> c\u1ee7a h\u00ecnh d\u1ea1ng \u2014 tho\u00e1t ra t\u1eeb m\u1eb7t ph\u00eda b\u1eafc, v\u00f2ng qua kh\u00f4ng gian xung quanh, v\u00e0 nh\u1eadp l\u1ea1i t\u1ea1i m\u1eb7t ph\u00eda nam. \u0110i\u1ec1u n\u00e0y khi\u1ebfn ch\u00fang l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u l\u1ef1c k\u00e9o d\u1ecdc theo chi\u1ec1u d\u00e0i c\u1ee7a nam ch\u00e2m thay v\u00ec qua chi\u1ec1u ngang c\u1ee7a n\u00f3.<\/p>\n<h3>V\u1eadt l\u00fd theo c\u00e1ch \u0111\u01a1n gi\u1ea3n<\/h3>\n<p>Khi nam ch\u00e2m \u0111\u01b0\u1ee3c t\u1ea1o ra, c\u00e1c mi\u1ec1n t\u1eeb c\u1ee7a n\u00f3 \u2014 c\u00e1c v\u00f9ng nh\u1ecf b\u00ean trong v\u1eadt li\u1ec7u \u2014 \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh sao cho ch\u00fang ch\u1ec9 v\u1ec1 c\u00f9ng m\u1ed9t h\u01b0\u1edbng d\u1ecdc theo chi\u1ec1u d\u00e0i c\u1ee7a nam ch\u00e2m. C\u00e0ng m\u1ea1nh v\u00e0 \u0111\u1ed3ng nh\u1ea5t s\u1ef1 c\u0103n ch\u1ec9nh n\u00e0y, l\u1ef1c h\u00fat c\u1ee7a nam ch\u00e2m theo h\u01b0\u1edbng tr\u1ee5c c\u00e0ng m\u1ea1nh.<\/p>\n<h2>Nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/Axial_Magnetization_Process_70H.webp\" alt=\"Qu\u00e1 tr\u00ecnh t\u1eeb h\u00f3a theo tr\u1ee5c\" width=\"1160\" height=\"774\" \/><\/p>\n<p>T\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch th\u1ef1c hi\u1ec7n t\u1eeb tr\u01b0\u1eddng tr\u1ee5c, t\u1eeb qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t \u0111\u1ebfn ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<h3>T\u1ed5ng quan v\u1ec1 quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 t\u1eeb h\u00f3a<\/h3>\n<ul>\n<li>S\u1ea3n xu\u1ea5t kh\u1ed1i nam ch\u00e2m (h\u00ecnh tr\u1ee5, h\u00ecnh v\u00f2ng ho\u1eb7c h\u00ecnh thanh) theo k\u00edch th\u01b0\u1edbc cu\u1ed1i c\u00f9ng tr\u01b0\u1edbc.<\/li>\n<li>\u0110\u1eb7t ph\u1ea7n v\u00e0o thi\u1ebft b\u1ecb t\u1eeb h\u00f3a sao cho tr\u1ee5c d\u00e0i mong mu\u1ed1n th\u1eb3ng h\u00e0ng v\u1edbi tr\u01b0\u1eddng t\u1eeb.<\/li>\n<li>\u00c1p d\u1ee5ng m\u1ed9t tr\u01b0\u1eddng t\u1eeb m\u1ea1nh d\u1ecdc theo tr\u1ee5c d\u00e0i \u0111\u00f3 \u0111\u1ec3 c\u0103n ch\u1ec9nh c\u00e1c mi\u1ec1n t\u1eeb. \u0110\u1ed1i v\u1edbi c\u00e1c nam ch\u00e2m hi\u1ebfm c\u00f3 m\u1ea1nh (NdFeB, SmCo), ch\u00fang t\u00f4i th\u01b0\u1eddng s\u1eed d\u1ee5ng tr\u01b0\u1eddng xung; \u0111\u1ed1i v\u1edbi ferrite, c\u00f3 th\u1ec3 d\u00f9ng tr\u01b0\u1eddng DC \u1ed5n \u0111\u1ecbnh.<\/li>\n<li>\u0110\u1ed1i v\u1edbi c\u00e1c m\u1eabu nhi\u1ec1u c\u1ef1c ho\u1eb7c m\u1eabu t\u00f9y ch\u1ec9nh, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t ho\u1eb7c cu\u1ed9n d\u00e2y ph\u00e2n \u0111o\u1ea1n \u0111\u1ec3 t\u1ea1o ra m\u1eabu tr\u01b0\u1eddng tr\u1ee5c c\u1ea7n thi\u1ebft.<\/li>\n<\/ul>\n<h3>Thi\u1ebft b\u1ecb v\u00e0 k\u1ef9 thu\u1eadt s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1eeb h\u00f3a tr\u1ee5c<\/h3>\n<ul>\n<li><strong>Cu\u1ed9n solenoid ho\u1eb7c c\u00e1c b\u1ed9 thi\u1ebft l\u1eadp cu\u1ed9n d\u00e2y th\u1eb3ng d\u00e0i<\/strong> \u2014 ph\u1ed5 bi\u1ebfn cho t\u1eeb tr\u01b0\u1eddng tr\u1ee5c \u0111\u01a1n gi\u1ea3n, n\u01a1i tr\u01b0\u1eddng ch\u1ea1y d\u1ecdc theo chi\u1ec1u d\u00e0i.<\/li>\n<li><strong>M\u00e1y t\u1ea1o t\u1eeb xung<\/strong> \u2014 d\u00f9ng cho c\u00e1c v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb cao (NdFeB). Cung c\u1ea5p c\u00e1c tr\u01b0\u1eddng ng\u1eafn, r\u1ea5t m\u1ea1nh \u0111\u1ec3 l\u00e0m b\u00e3o h\u00f2a ho\u00e0n to\u00e0n v\u1eadt li\u1ec7u.<\/li>\n<li><strong>M\u00e1y t\u1ea1o t\u1eeb DC v\u1edbi yoke<\/strong> \u2014 ph\u00f9 h\u1ee3p cho vi\u1ec7c t\u1ea1o t\u1eeb l\u1ef1c th\u1ea5p h\u01a1n v\u00e0 c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t.<\/li>\n<li><strong>Khay t\u00f9y ch\u1ec9nh v\u00e0 kh\u1ed1i c\u1ed1 \u0111\u1ecbnh<\/strong> \u2014 gi\u1eef v\u00f2ng v\u00e0 c\u00e1c h\u00ecnh d\u1ea1ng l\u1ea1 trong khi gi\u1eef tr\u1ee5c th\u1eb3ng h\u00e0ng.<\/li>\n<li><strong>D\u1ee5ng c\u1ee5 m\u1ea1ch t\u1eeb<\/strong> \u2014 gi\u00fap t\u1eadp trung tr\u01b0\u1eddng v\u00e0o ph\u1ea7n \u0111\u1ec3 \u0111\u1ea1t k\u1ebft qu\u1ea3 nh\u1ea5t qu\u00e1n.<\/li>\n<li>Trang b\u1ecb an to\u00e0n v\u00e0 ch\u1eafn ch\u1eafn ph\u00f9 h\u1ee3p l\u00e0 ti\u00eau chu\u1ea9n v\u00ec c\u00e1c xung t\u1ea1o t\u1eeb v\u00e0 tr\u01b0\u1eddng cao c\u00f3 th\u1ec3 nguy hi\u1ec3m.<\/li>\n<\/ul>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n<ul>\n<li><strong>\u0110o tr\u01b0\u1eddng<\/strong>: S\u1eed d\u1ee5ng m\u00e1y \u0111o gauss ho\u1eb7c fluxmeter \u0111\u1ec3 x\u00e1c minh c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 h\u01b0\u1edbng tr\u01b0\u1eddng b\u1ec1 m\u1eb7t (\u0111\u1ec9nh tr\u01b0\u1eddng tr\u1ee5c n\u01a1i mong \u0111\u1ee3i).<\/li>\n<li><strong>B\u1ea3n \u0111\u1ed3 m\u1eabu<\/strong>: L\u1eadp b\u1ea3n \u0111\u1ed3 m\u1ed9t b\u1ed9 m\u1eabu \u0111\u1ea1i di\u1ec7n \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a tr\u01b0\u1eddng v\u00e0 v\u1ecb tr\u00ed c\u1ef1c.<\/li>\n<li><strong>Ki\u1ec3m tra v\u1eadt li\u1ec7u<\/strong>: X\u00e1c minh \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb, \u0111\u1ed9 d\u01b0 v\u00e0 c\u1ea5p tr\u01b0\u1edbc khi t\u1ea1o t\u1eeb.<\/li>\n<li><strong>Ki\u1ec3m tra k\u00edch th\u01b0\u1edbc v\u00e0 c\u1ed1 \u0111\u1ecbnh<\/strong>: \u0110\u1ea3m b\u1ea3o c\u00e1c b\u1ed9 ph\u1eadn \u0111\u1ed3ng t\u00e2m v\u00e0 l\u1eafp \u0111\u00fang \u0111\u1ec3 tr\u00e1nh c\u1ef1c l\u1ec7ch.<\/li>\n<li><strong>Theo d\u00f5i ngu\u1ed3n g\u1ed1c<\/strong>: Ghi ch\u00e9p hi\u1ec7u chu\u1ea9n theo ti\u00eau chu\u1ea9n NIST v\u00e0 ch\u1ee9ng ch\u1ec9 l\u00f4 h\u00e0ng cho kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam c\u1ea7n t\u00e0i li\u1ec7u QA.<\/li>\n<li><strong>Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n<\/strong>: C\u00e1c b\u00e0i ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 v\u00e0 kh\u1eed t\u1eeb theo y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng.<\/li>\n<\/ul>\n<p>Quy tr\u00ecnh n\u00e0y gi\u1eef cho t\u1eeb tr\u01b0\u1eddng tr\u1ee5c d\u1ecdc \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady cho \u0111\u1ed9ng c\u01a1, c\u1ea3m bi\u1ebfn v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c tr\u00ean th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c d\u1ecdc<\/h2>\n<p>Nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c d\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00ec tr\u01b0\u1eddng t\u1eeb c\u1ee7a ch\u00fang ch\u1ea1y th\u1eb3ng qua chi\u1ec1u d\u00e0i c\u1ee7a nam ch\u00e2m, l\u00e0m cho ch\u00fang l\u00fd t\u01b0\u1edfng cho c\u00e1c thi\u1ebft l\u1eadp c\u1ea7n l\u1ef1c ho\u1eb7c flux h\u01b0\u1edbng theo m\u1ed9t tr\u1ee5c. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam:<\/p>\n<h3>\u0110\u1ed9ng c\u01a1 v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/h3>\n<ul>\n<li>S\u1eed d\u1ee5ng trong r\u00f4to \u0111\u1ec3 t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb m\u1ea1nh m\u1ebd, \u1ed5n \u0111\u1ecbnh d\u1ecdc theo tr\u1ee5c.<\/li>\n<li>Ph\u1ed5 bi\u1ebfn trong xe \u0111i\u1ec7n, d\u1ee5ng c\u1ee5 \u0111i\u1ec7n v\u00e0 m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p.<\/li>\n<\/ul>\n<h3>C\u1ea3m bi\u1ebfn v\u00e0 B\u1ed9 truy\u1ec1n \u0111\u1ed9ng<\/h3>\n<ul>\n<li>Cung c\u1ea5p ph\u1ea3n h\u1ed3i t\u1eeb ch\u00ednh x\u00e1c trong c\u1ea3m bi\u1ebfn v\u1ecb tr\u00ed tuy\u1ebfn t\u00ednh ho\u1eb7c quay v\u00f2ng.<\/li>\n<li>Th\u01b0\u1eddng d\u00f9ng trong h\u1ec7 th\u1ed1ng \u00f4 t\u00f4, robot v\u00e0 thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/li>\n<\/ul>\n<h3>Li\u00ean k\u1ebft t\u1eeb<\/h3>\n<ul>\n<li>Chuy\u1ec3n \u0111\u1ed5i m\u00f4-men xo\u1eafn qua c\u00e1c r\u00e0o ch\u1eafn k\u00edn m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac v\u1eadt l\u00fd.<\/li>\n<li>Ho\u00e0n h\u1ea3o cho b\u01a1m v\u00e0 m\u00e1y tr\u1ed9n trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t, y t\u1ebf v\u00e0 th\u1ef1c ph\u1ea9m, n\u01a1i c\u1ea7n tr\u00e1nh \u00f4 nhi\u1ec5m.<\/li>\n<\/ul>\n<h3>Loa v\u00e0 Thi\u1ebft b\u1ecb \u00e2m thanh<\/h3>\n<ul>\n<li>Cung c\u1ea5p c\u0103n ch\u1ec9nh t\u1eeb ch\u00ednh x\u00e1c \u0111\u1ec3 t\u00e1i t\u1ea1o \u00e2m thanh r\u00f5 n\u00e9t.<\/li>\n<li>C\u00f3 trong h\u1ec7 th\u1ed1ng \u00e2m thanh gia \u0111\u00ecnh, loa ph\u00f2ng thu v\u00e0 loa di \u0111\u1ed9ng.<\/li>\n<\/ul>\n<h3>Thi\u1ebft b\u1ecb y t\u1ebf<\/h3>\n<ul>\n<li>S\u1eed d\u1ee5ng trong c\u00e1c th\u00e0nh ph\u1ea7n MRI, d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt v\u00e0 thi\u1ebft b\u1ecb ch\u1ea9n \u0111o\u00e1n.<\/li>\n<li>T\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c cung c\u1ea5p v\u1ecb tr\u00ed tr\u01b0\u1eddng d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c cho c\u00e1c thi\u1ebft b\u1ecb nh\u1ea1y c\u1ea3m.<\/li>\n<\/ul>\n<p><strong>\u01afu \u0111i\u1ec3m so v\u1edbi c\u00e1c lo\u1ea1i t\u1eeb tr\u01b0\u1eddng kh\u00e1c:<\/strong><\/p>\n<ul>\n<li>H\u00fat m\u1ea1nh h\u01a1n d\u1ecdc theo tr\u1ee5c trung t\u00e2m c\u1ee7a nam ch\u00e2m.<\/li>\n<li>D\u1ec5 c\u0103n ch\u1ec9nh h\u01a1n trong c\u00e1c thi\u1ebft k\u1ebf h\u00ecnh tr\u1ee5 v\u00e0 h\u00ecnh v\u00f2ng.<\/li>\n<li>Hi\u1ec7u qu\u1ea3 h\u01a1n trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 tr\u01b0\u1eddng t\u1eeb ph\u1ea3i \u0111i xuy\u00ean tr\u1ef1c ti\u1ebfp qua chi\u1ec1u d\u00e0i c\u1ee7a nam ch\u00e2m.<\/li>\n<\/ul>\n<h2>T\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c so v\u1edbi c\u00e1c lo\u1ea1i t\u1eeb tr\u01b0\u1eddng kh\u00e1c<\/h2>\n<p>T\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1ch duy nh\u1ea5t \u0111\u1ec3 nam ch\u00e2m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1eeb h\u00f3a. N\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1ch ph\u1ed5 bi\u1ebfn nh\u1ea5t, nh\u01b0ng c\u00e1c lo\u1ea1i t\u1eeb tr\u01b0\u1eddng \u0111\u1ed1i di\u1ec7n v\u00e0 h\u01b0\u1edbng t\u00e2m c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang lo\u1ea1i cho thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh.<\/p>\n<p><strong>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh v\u1ec1 h\u01b0\u1edbng t\u1eeb tr\u01b0\u1eddng<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i t\u1eeb tr\u01b0\u1eddng<\/th>\n<th>V\u1ecb tr\u00ed c\u1ef1c t\u1eeb<\/th>\n<th>H\u01b0\u1edbng c\u1ee7a tr\u01b0\u1eddng<\/th>\n<th>H\u00ecnh d\u1ea1ng ph\u1ed5 bi\u1ebfn<\/th>\n<th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>H\u01b0\u1edbng tr\u1ee5c<\/strong><\/td>\n<td>Tr\u00ean m\u1ed7i m\u1eb7t ph\u1eb3ng ph\u1eb3ng<\/td>\n<td>D\u1ecdc theo chi\u1ec1u d\u00e0i (t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i)<\/td>\n<td>H\u00ecnh tr\u1ee5, \u0111\u0129a, v\u00f2ng<\/td>\n<td>\u0110\u1ed9ng c\u01a1, c\u1ea3m bi\u1ebfn, kh\u1edbp n\u1ed1i<\/td>\n<\/tr>\n<tr>\n<td><strong>H\u01b0\u1edbng \u0111\u1ed1i di\u1ec7n<\/strong><\/td>\n<td>Tr\u00ean c\u00e1c m\u1eb7t cong<\/td>\n<td>Qua \u0111\u01b0\u1eddng k\u00ednh<\/td>\n<td>\u0110\u0129a, h\u00ecnh tr\u1ee5<\/td>\n<td>M\u00e1y khu\u1ea5y t\u1eeb, kh\u1edbp n\u1ed1i chuy\u00ean d\u1ee5ng<\/td>\n<\/tr>\n<tr>\n<td><strong>H\u01b0\u1edbng t\u00e2m<\/strong><\/td>\n<td>Xung quanh chu vi<\/td>\n<td>T\u1eeb trung t\u00e2m ra ngo\u00e0i<\/td>\n<td>V\u00f2ng<\/td>\n<td>B\u1ed9 m\u00e3 h\u00f3a, m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>L\u1ee3i \u00edch c\u1ee7a t\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c<\/h3>\n<ul>\n<li><strong>Tr\u01b0\u1eddng m\u1ea1nh t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i<\/strong> \u2013 L\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n l\u1ef1c k\u00e9o t\u1eadp trung tr\u00ean b\u1ec1 m\u1eb7t ph\u1eb3ng.<\/li>\n<li><strong>D\u1ec5 ch\u1ebf t\u1ea1o<\/strong> \u2013 Ph\u00f9 h\u1ee3p t\u1ed1t v\u1edbi quy tr\u00ecnh s\u1ea3n xu\u1ea5t ti\u00eau chu\u1ea9n.<\/li>\n<li><strong>\u0110\u00e1ng tin c\u1eady cho c\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng<\/strong> \u2013 Ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00e1y quay n\u01a1i c\u00e1c c\u1ef1c t\u1eeb ph\u00f9 h\u1ee3p v\u1edbi tr\u1ee5c quay.<\/li>\n<\/ul>\n<h3>H\u1ea1n ch\u1ebf c\u1ee7a t\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c<\/h3>\n<ul>\n<li>\u00cdt hi\u1ec7u qu\u1ea3 h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n l\u1ef1c k\u00e9o b\u00ean ho\u1eb7c tr\u01b0\u1eddng \u0111\u1ec1u quanh.<\/li>\n<li>M\u1eabu tr\u01b0\u1eddng c\u00f3 th\u1ec3 qu\u00e1 h\u1eb9p \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng c\u1ea3m bi\u1ebfn.<\/li>\n<\/ul>\n<h3>Ch\u1ecdn l\u1ef1a ph\u01b0\u01a1ng ph\u00e1p t\u1eeb tr\u01b0\u1eddng ph\u00f9 h\u1ee3p<\/h3>\n<p>Khi quy\u1ebft \u0111\u1ecbnh gi\u1eefa t\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c, \u0111\u01b0\u1eddng k\u00ednh ho\u1eb7c h\u01b0\u1edbng t\u00e2m:<\/p>\n<ul>\n<li><strong>Xem h\u01b0\u1edbng k\u00e9o b\u1ea1n c\u1ea7n<\/strong> \u2013 \u0110\u1ea7u-cu\u1ed1i? \u0110i theo tr\u1ee5c. L\u1ef1c b\u00ean? C\u00f3 th\u1ec3 t\u1ed1t h\u01a1n l\u00e0 \u0111\u01b0\u1eddng k\u00ednh.<\/li>\n<li><strong>Ph\u00f9 h\u1ee3p v\u1edbi b\u1ec1 m\u1eb7t gh\u00e9p n\u1ed1i<\/strong> \u2013 Ti\u1ebfp x\u00fac ph\u1eb3ng ph\u00f9 h\u1ee3p v\u1edbi nam ch\u00e2m tr\u1ee5c.<\/li>\n<li><strong>C\u00e2n nh\u1eafc trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p c\u1ee7a b\u1ea1n<\/strong> \u2013 V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n \u0111ang thi\u1ebft k\u1ebf m\u1ed9t v\u00f2ng c\u1ea7n ph\u00e2n b\u1ed1 t\u1eeb tr\u01b0\u1eddng \u0111\u1ec1u, h\u01b0\u1edbng k\u00ednh l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p.<\/li>\n<li><strong>Xem x\u00e9t c\u00e2n b\u1eb1ng hi\u1ec7u su\u1ea5t<\/strong> \u2013 H\u01b0\u1edbng tr\u1ee5c th\u01b0\u1eddng mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t nh\u1ea5t gi\u1eefa c\u00f4ng su\u1ea5t, chi ph\u00ed v\u00e0 kh\u1ea3 n\u0103ng cung c\u1ea5p.<\/li>\n<\/ul>\n<h2>Ch\u1ecdn nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c t\u1eeb NBAEM<\/h2>\n<p>N\u1ebfu b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c, NBAEM cung c\u1ea5p nhi\u1ec1u l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau t\u1ea1i Vi\u1ec7t Nam v\u00e0 to\u00e0n c\u1ea7u. Ch\u00fang t\u00f4i cung c\u1ea5p nam ch\u00e2m trong c\u00e1c lo\u1ea1i <strong>NdFeB (neodymi)<\/strong>, <strong>SmCo (samari coban)<\/strong>, v\u00e0 <strong>s\u1eaft t\u1eeb\/g\u1ed1m<\/strong> v\u1eadt li\u1ec7u, t\u1ea5t c\u1ea3 \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ecbnh h\u01b0\u1edbng t\u1eeb tr\u01b0\u1eddng ch\u00ednh x\u00e1c theo h\u01b0\u1edbng tr\u1ee5c. D\u00f9 b\u1ea1n c\u1ea7n m\u1ed9t mi\u1ebfng nh\u1ecf, c\u00f3 \u0111\u1ed9 m\u1ea1nh cao cho c\u1ea3m bi\u1ebfn ho\u1eb7c m\u1ed9t nam ch\u00e2m c\u00f4ng nghi\u1ec7p ch\u1eafc ch\u1eafn cho \u0111\u1ed9ng c\u01a1, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi k\u00edch th\u01b0\u1edbc, l\u1edbp ph\u1ee7 v\u00e0 th\u00f4ng s\u1ed1 hi\u1ec7u su\u1ea5t b\u1ea1n c\u1ea7n.<\/p>\n<h3>C\u00e1c lo\u1ea1i nam ch\u00e2m c\u00f3 th\u1ec3 c\u00f3 t\u1eeb tr\u01b0\u1eddng h\u01b0\u1edbng tr\u1ee5c<\/h3>\n<ul>\n<li><strong>NdFeB (Neodymium S\u1eaft Boron)<\/strong> \u2013 Hi\u1ec7u su\u1ea5t t\u1eeb m\u1ea1nh nh\u1ea5t, l\u00fd t\u01b0\u1edfng cho thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn<\/li>\n<li><strong>SmCo (Samari Cobalt)<\/strong> \u2013 \u1ed4n \u0111\u1ecbnh nhi\u1ec7t cao, ch\u1ed1ng \u0103n m\u00f2n<\/li>\n<li><strong>S\u1eaft t\u1eeb\/G\u1ed1m<\/strong> \u2013 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed cho s\u1eed d\u1ee5ng s\u1ed1 l\u01b0\u1ee3ng l\u1edbn v\u00e0 ngo\u00e0i tr\u1eddi<\/li>\n<li><strong>AlNiCo<\/strong> \u2013 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t tuy\u1ec7t v\u1eddi, l\u1ef1c kh\u00e1ng t\u1eeb th\u1ea5p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean bi\u1ec7t<\/li>\n<\/ul>\n<h3>D\u1ecbch v\u1ee5 t\u1eeb h\u00f3a t\u00f9y ch\u1ec9nh<\/h3>\n<p>Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c k\u00edch c\u1ee1, h\u00ecnh d\u1ea1ng v\u00e0 \u0111\u1ed9 t\u1eeb h\u00f3a t\u00f9y ch\u1ec9nh \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n. Bao g\u1ed3m c\u00e1c lo\u1ea1i \u0111\u1eb7c bi\u1ec7t d\u00e0nh cho m\u00f4i tr\u01b0\u1eddng <strong>nhi\u1ec7t \u0111\u1ed9 cao<\/strong>, <strong>h\u00e0ng h\u1ea3i<\/strong>, ho\u1eb7c <strong>y t\u1ebf<\/strong> .<\/p>\n<h3>C\u00e1ch NBAEM \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n<ul>\n<li><strong>Ki\u1ec3m tra QC nghi\u00eam ng\u1eb7t<\/strong> t\u1eeb nguy\u00ean li\u1ec7u th\u00f4 \u0111\u1ebfn th\u00e0nh ph\u1ea9m<\/li>\n<li><strong>Ki\u1ec3m tra \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1eeb h\u00f3a<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u0103n ch\u1ec9nh tr\u1ee5c th\u00edch h\u1ee3p<\/li>\n<li><strong>Ki\u1ec3m tra b\u1ec1 m\u1eb7t v\u00e0 l\u1edbp ph\u1ee7<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n v\u00e0 b\u1ea3o v\u1ec7<\/li>\n<\/ul>\n<h3>V\u1eadn chuy\u1ec3n v\u00e0 h\u1ed7 tr\u1ee3 to\u00e0n c\u1ea7u<\/h3>\n<p>NBAEM cung c\u1ea5p cho c\u00e1c c\u00f4ng ty Vi\u1ec7t Nam d\u1ecbch v\u1ee5 giao h\u00e0ng nhanh ch\u00f3ng, \u0111\u00e1ng tin c\u1eady t\u1eeb c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t c\u1ee7a ch\u00fang t\u00f4i. Ch\u00fang t\u00f4i tu\u00e2n th\u1ee7 c\u00e1c <strong>h\u1ec7 th\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn ISO<\/strong> v\u00e0 c\u00f3 th\u1ec3 cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 t\u00e0i li\u1ec7u tu\u00e2n th\u1ee7 cho c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd. \u0110\u1ed9i ng\u0169 h\u1ed7 tr\u1ee3 c\u1ee7a ch\u00fang t\u00f4i l\u00e0m vi\u1ec7c tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 qu\u1ea3n l\u00fd mua h\u00e0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c nam ch\u00e2m ph\u00f9 h\u1ee3p\u2014\u0111\u00fang th\u1eddi gian v\u00e0 \u0111\u00fang th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u tr\u1ea3 l\u1eddi nhanh cho c\u00e1c c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn v\u1ec1 nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c, c\u00f9ng v\u1edbi m\u1ed9t v\u00e0i m\u1eb9o \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1.<\/p>\n<h3>Nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c ngh\u0129a l\u00e0 g\u00ec<\/h3>\n<p>N\u00f3 c\u00f3 ngh\u0129a l\u00e0 c\u1ef1c B\u1eafc v\u00e0 c\u1ef1c Nam c\u1ee7a nam ch\u00e2m n\u1eb1m tr\u00ean c\u00e1c m\u1eb7t ph\u1eb3ng \u1edf m\u1ed7i \u0111\u1ea7u c\u1ee7a chi\u1ec1u d\u00e0i c\u1ee7a n\u00f3. Tr\u01b0\u1eddng t\u1eeb ch\u1ea1y th\u1eb3ng t\u1eeb \u0111\u1ea7u n\u00e0y sang \u0111\u1ea7u kia. \u0110i\u1ec1u n\u00e0y ph\u1ed5 bi\u1ebfn \u1edf c\u00e1c nam ch\u00e2m d\u1ea1ng \u0111\u0129a, h\u00ecnh tr\u1ee5 v\u00e0 h\u00ecnh v\u00f2ng.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1eeb tr\u01b0\u1eddng tr\u1ee5c, \u0111\u1ed1i x\u1ee9ng v\u00e0 xuy\u00ean t\u00e2m l\u00e0 g\u00ec<\/h3>\n<ul>\n<li><strong>H\u01b0\u1edbng tr\u1ee5c<\/strong> \u2013 C\u1ef1c tr\u00ean c\u00e1c \u0111\u1ea7u (theo chi\u1ec1u d\u00e0i)<\/li>\n<li><strong>H\u01b0\u1edbng \u0111\u1ed1i di\u1ec7n<\/strong> \u2013 C\u1ef1c tr\u00ean c\u00e1c m\u1eb7t cong (qua \u0111\u01b0\u1eddng k\u00ednh)<\/li>\n<li><strong>H\u01b0\u1edbng t\u00e2m<\/strong> \u2013 C\u1ef1c \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp quanh chu vi, h\u01b0\u1edbng ra ngo\u00e0i ho\u1eb7c v\u00e0o trong<\/li>\n<\/ul>\n<h3>T\u00f4i c\u00f3 th\u1ec3 c\u1eaft ho\u1eb7c khoan m\u1ed9t nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c kh\u00f4ng<\/h3>\n<p>Kh\u00f4ng. Vi\u1ec7c c\u1eaft ho\u1eb7c khoan th\u01b0\u1eddng s\u1ebd l\u00e0m h\u1ecfng v\u1eadt li\u1ec7u, gi\u1ea3m s\u1ee9c m\u1ea1nh v\u00e0 thay \u0111\u1ed5i m\u1eabu t\u1eeb. H\u00e3y \u0111\u1eb7t h\u00e0ng k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng b\u1ea1n c\u1ea7n t\u1eeb \u0111\u1ea7u.<\/p>\n<h3>T\u00f4i n\u00ean l\u01b0u tr\u1eef nam ch\u00e2m t\u1eeb tr\u01b0\u1eddng tr\u1ee5c nh\u01b0 th\u1ebf n\u00e0o<\/h3>\n<ul>\n<li>Tr\u00e1nh xa c\u00e1c tr\u01b0\u1eddng t\u1eeb \u0111\u1ed1i l\u1eadp m\u1ea1nh<\/li>\n<li>S\u1eed d\u1ee5ng c\u00e1c mi\u1ebfng \u0111\u1ec7m ho\u1eb7c b\u1ed9 gi\u1eef gi\u1eefa c\u00e1c nam ch\u00e2m \u0111\u1ec3 ng\u0103n ch\u1eb7n m\u1ea5t t\u1eeb t\u00ednh<\/li>\n<li>L\u01b0u tr\u1eef \u1edf n\u01a1i kh\u00f4 r\u00e1o \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n (\u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi nam ch\u00e2m NdFeB)<\/li>\n<\/ul>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft chi\u1ec1u t\u1eeb c\u1ee7a nam ch\u00e2m c\u1ee7a t\u00f4i<\/h3>\n<p>M\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1eed d\u1ee5ng c\u1ef1c B\u1eafc ho\u1eb7c c\u1ef1c Nam \u0111\u00e3 bi\u1ebft c\u1ee7a nam ch\u00e2m kh\u00e1c v\u00e0 xem m\u1eb7t n\u00e0o h\u00fat ho\u1eb7c \u0111\u1ea9y. C\u00e1c thi\u1ebft b\u1ecb x\u00e1c \u0111\u1ecbnh c\u1ef1c v\u00e0 m\u00e1y \u0111o gauss cung c\u1ea5p c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n<h3>X\u1eed l\u00fd s\u1ef1 c\u1ed1 v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h3>\n<ul>\n<li><strong>H\u00fat y\u1ebfu?<\/strong> Ki\u1ec3m tra xem nam ch\u00e2m c\u1ee7a b\u1ea1n c\u00f3 qu\u00e1 xa kh\u1ecfi b\u1ec1 m\u1eb7t m\u1ee5c ti\u00eau hay kh\u00f4ng ho\u1eb7c c\u00f3 kho\u1ea3ng tr\u1ed1ng kh\u00f4ng t\u1eeb t\u00ednh \u1edf gi\u1eefa kh\u00f4ng.<\/li>\n<li><strong>Nam ch\u00e2m d\u00ednh ch\u1eb7t qu\u00e1 m\u1ee9c?<\/strong> S\u1eed d\u1ee5ng mi\u1ebfng \u0111\u1ec7m b\u1eb1ng nh\u1ef1a ho\u1eb7c b\u00eca c\u1ee9ng trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd.<\/li>\n<li><strong>M\u1ea5t t\u1eeb t\u00ednh?<\/strong> Tr\u00e1nh nhi\u1ec7t \u0111\u1ed9 cao, nam ch\u00e2m \u0111\u1ed1i l\u1eadp m\u1ea1nh ho\u1eb7c s\u1ed1c c\u01a1 h\u1ecdc n\u1eb7ng.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a vi\u1ec7c nam ch\u00e2m h\u01b0\u1edbng tr\u1ee5c, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, l\u1ee3i \u00edch v\u00e0 \u1ee9ng d\u1ee5ng t\u1eeb c\u00e1c chuy\u00ean gia nam ch\u00e2m NBAEM<\/p>","protected":false},"author":1,"featured_media":1923,"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-1924","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/What_does_axially_magnetized_mean_h5Q.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1924","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=1924"}],"version-history":[{"count":1,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1924\/revisions"}],"predecessor-version":[{"id":1932,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1924\/revisions\/1932"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1923"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}