{"id":1224,"date":"2024-03-18T06:16:25","date_gmt":"2024-03-18T06:16:25","guid":{"rendered":"https:\/\/nbaem.com\/?p=1224"},"modified":"2024-11-27T05:24:38","modified_gmt":"2024-11-27T05:24:38","slug":"magnetic-flux-and-surface-gauss","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/magnetic-flux-and-surface-gauss\/","title":{"rendered":"L\u01b0u t\u1eeb v\u00e0 \u0111\u1ed9 l\u1ec7ch m\u1eb7t ngo\u00e0i"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:var(--awb-color3);border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-1{margin-top:10px!important; margin-right:0px!important;margin-bottom:15px!important;margin-left:0px!important;}}@media only screen and (max-width:640px) {.fusion-title.fusion-title-1{margin-top:10px!important; margin-right:0px!important;margin-bottom:10px!important; margin-left:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\" style=\"margin-top:10px;margin-right:0px;margin-bottom:15px;margin-left:0px;\"><h1 class=\"title-heading-left\" style=\"margin:0;\"><h1>L\u01b0u t\u1eeb v\u00e0 \u0111\u1ed9 l\u1ec7ch m\u1eb7t ngo\u00e0i<\/h1><\/h1><\/div><div class=\"fusion-text fusion-text-1\"><p>Vi\u1ec7c ki\u1ec3m tra hi\u1ec7u su\u1ea5t c\u1ee7a nam ch\u00e2m \u0111\u00e3 ho\u00e0n thi\u1ec7n ch\u1ee7 y\u1ebfu ph\u00e1t hi\u1ec7n t\u1eeb t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 d\u00f2ng t\u1eeb.<\/p>\n<p><span style=\"color: #0000ff;\"><strong>T\u1eeb t\u00ednh b\u1ec1 m\u1eb7t:<\/strong> <\/span>S\u1eed d\u1ee5ng m\u1ed9t m\u00e1y \u0111o t\u1eeb tr\u01b0\u1eddng b\u1ec1 m\u1eb7t (Gaussmeter, Tesla meter), d\u00f9ng \u0111\u1ec3 ki\u1ec3m tra t\u1eeb t\u00ednh b\u1ec1 m\u1eb7t tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a nam ch\u00e2m. C\u1ea7n ph\u1ea3i d\u00f9ng \u0111\u1ea7u d\u00f2 ch\u1ec9 c\u00f3 th\u1ec3 ki\u1ec3m tra m\u1ed9t \u0111i\u1ec3m, v\u00e0 ch\u1ec9 c\u00f3 th\u1ec3 \u0111o m\u1eadt \u0111\u1ed9 s\u1ed1 t\u1eeb t\u1ea1i v\u1ecb tr\u00ed n\u00e0y trong th\u1ec3 t\u00edch \u0111\u01a1n v\u1ecb c\u1ee7a nam ch\u00e2m, do \u0111\u00f3 d\u1eef li\u1ec7u c\u1ee7a n\u00f3 l\u00e0 d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t \u0111i\u1ec3m, l\u00e0 gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i. \u0110\u00f4i khi b\u1ea1n s\u1ebd th\u1ea5y d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh lu\u00f4n dao \u0111\u1ed9ng. \u0110\u00f3 l\u00e0 v\u00ec di\u1ec7n t\u00edch ti\u1ebfp x\u00fac c\u1ee7a \u0111\u1ea7u d\u00f2 h\u01a1i l\u1edbn, n\u00ean d\u1eef li\u1ec7u s\u1ebd thay \u0111\u1ed5i.<\/p>\n<p><a href=\"https:\/\/nbaem.com\/vi\/how-to-measure-magnet-strength\/\"><span style=\"color: #0000ff;\"><strong>L\u01b0u l\u01b0\u1ee3ng t\u1eeb<\/strong>:<\/span> <\/a>[\u2026] T\u1eeb th\u00f4ng: l\u00e0 \u0111\u1eb7t nam ch\u00e2m v\u00e0o cu\u1ed9n d\u00e2y Helmholtz r\u1ed3i l\u1ea5y ra. Nguy\u00ean l\u00fd l\u00e0 c\u00f3 m\u1ed9t t\u1eeb tr\u01b0\u1eddng kh\u00f4ng \u0111\u1ed5i trong cu\u1ed9n d\u00e2y. Khi b\u1ea1n \u0111\u1eb7t nam ch\u00e2m v\u00e0o v\u00e0 l\u1ea5y ra, t\u1eeb tr\u01b0\u1eddng s\u1ebd thay \u0111\u1ed5i. N\u00f3 c\u00f3 m\u1ed9t t\u00e1c \u0111\u1ed9ng. S\u1ef1 thay \u0111\u1ed5i gi\u1eefa t\u1eeb tr\u01b0\u1eddng c\u1ee7a nam ch\u00e2m v\u00e0 t\u1eeb tr\u01b0\u1eddng ban \u0111\u1ea7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng t\u1eeb t\u00ednh c\u1ee7a ch\u00ednh nam ch\u00e2m, v\u00ec v\u1eady n\u00f3 l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i. N\u00f3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u0103ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ee7a to\u00e0n b\u1ed9 nam ch\u00e2m, kh\u00f4ng ph\u1ea3i d\u1eef li\u1ec7u t\u1ea1i \u0111i\u1ec3m n\u00e0y, v\u00ec v\u1eady, h\u1ea7u h\u1ebft th\u1eddi gian, ch\u00fang ta ph\u1ea3i k\u1ebft h\u1ee3p hai d\u1eef li\u1ec7u t\u1eeb th\u00f4ng v\u00e0 t\u1eeb t\u00ednh b\u1ec1 m\u1eb7t \u0111\u1ec3 ph\u00e2n t\u00edch c\u00f9ng m\u1ed9t l\u00fac, m\u1ed9t l\u00e0 gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 c\u00e1i kia l\u00e0 gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i. [\u2026]<\/p>\n<p>Khi ki\u1ec3m tra t\u1eeb t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 d\u00f2ng t\u1eeb, t\u1ea1i sao m\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m t\u1eeb y\u1ebfu xu\u1ea5t hi\u1ec7n c\u00f9ng trong m\u1ed9t l\u00f4 nam ch\u00e2m? Ch\u00fang lu\u00f4n c\u00f3 hi\u1ec7u su\u1ea5t t\u1eeb th\u1ea5p h\u01a1n nam ch\u00e2m b\u00ecnh th\u01b0\u1eddng. Nguy\u00ean nh\u00e2n l\u00e0 g\u00ec? C\u00f3 th\u1ec3 c\u00f3 b\u1ed1n l\u00fd do:<\/p>\n<p>1) Khi x\u1ea3y ra \u0111i\u1ec1u n\u00e0y, ph\u1ea7n l\u1edbn l\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m nh\u1ecf, quy tr\u00ecnh gia c\u00f4ng c\u1ee7a ch\u00fang kh\u00e1 d\u00e0i. R\u1ea5t c\u00f3 th\u1ec3 trong qu\u00e1 tr\u00ecnh gia c\u00f4ng, m\u1ed9t ho\u1eb7c hai s\u1ea3n ph\u1ea9m c\u00f3 hi\u1ec7u su\u1ea5t th\u1ea5p b\u1ecb tr\u1ed9n l\u1eabn v\u00e0o c\u00f9ng m\u1ed9t l\u00f4 v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m hi\u1ec7u su\u1ea5t cao. N\u1ebfu s\u1ea3n ph\u1ea9m kh\u00f4ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd ch\u1eb7t ch\u1ebd t\u1ea1i n\u01a1i s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e0 m\u00e1y gia c\u00f4ng, vi\u1ec7c tr\u1ed9n l\u1eabn n\u00e0y s\u1ebd th\u01b0\u1eddng xuy\u00ean x\u1ea3y ra.<\/p>\n<p>2) Ch\u00fang t\u00f4i l\u00e0m lo\u1ea1i s\u1ea3n ph\u1ea9m nh\u1ecf n\u00e0y. Ph\u1ea7n l\u1edbn \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb m\u1ed9t mi\u1ebfng ph\u00f4i vu\u00f4ng, c\u1eaft th\u00e0nh h\u00ecnh vu\u00f4ng v\u00e0 bo tr\u00f2n, t\u1eeb l\u1edbn \u0111\u1ebfn nh\u1ecf. Trong qu\u00e1 tr\u00ecnh c\u1eaft, to\u00e0n b\u1ed9 l\u1edbp v\u1ecf ngo\u00e0i c\u1ee7a to\u00e0n b\u1ed9 m\u1eb7t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u. V\u1ecf v\u00e0 v\u1ecf \u0111en c\u1ea7n ph\u1ea3i c\u1eaft b\u1ecf. M\u1ed9t s\u1ed1 nh\u00e0 m\u00e1y, \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 v\u1eadt li\u1ec7u, kh\u00f4ng lo\u1ea1i b\u1ecf \u0111\u1ee7 v\u1ecf khi c\u1eaft, ho\u1eb7c c\u1eaft xi\u00ean, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t k\u00e9m. V\u1eadt li\u1ec7u v\u1ecf s\u1ebd b\u00e1m v\u00e0o do s\u1ea3n ph\u1ea9m nh\u1ecf v\u00e0 m\u1ecfng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3.<\/p>\n<p>3) Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y v\u1eabn x\u1ea3y ra trong qu\u00e1 tr\u00ecnh gia c\u00f4ng, \u0111\u00f3 l\u00e0 trong qu\u00e1 tr\u00ecnh c\u1eaft, h\u1ecd \u0111\u1ea3o chi\u1ec1u c\u1ef1c c\u1ee7a qu\u00e1 tr\u00ecnh t\u1eeb h\u00f3a. Ban \u0111\u1ea7u \u0111\u01b0\u1ee3c t\u1eeb h\u00f3a theo h\u01b0\u1edbng d\u00e0y, nh\u01b0ng m\u1ed9t s\u1ed1 c\u1ed9t b\u1ecb c\u1eaft sai, v\u00e0 h\u01b0\u1edbng t\u1eeb h\u00f3a b\u1ecb c\u1eaft. N\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh h\u01b0\u1edbng \u0111\u01b0\u1eddng k\u00ednh, g\u00e2y ra l\u1edbp m\u00e0ng n\u00e0y th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c l\u1edbp kh\u00e1c trong qu\u00e1 tr\u00ecnh t\u1eeb h\u00f3a.<\/p>\n<p>4) \u0110\u00e2y l\u00e0 t\u00ecnh hu\u1ed1ng kh\u00f3 nh\u1ea5t, \u0111\u00f3 l\u00e0 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a to\u00e0n b\u1ed9 mi\u1ebfng ph\u00f4i kh\u00f4ng t\u1ed1t. M\u1ed9t s\u1ed1 mi\u1ebfng ph\u00f4i s\u1ea3n xu\u1ea5t c\u00f9ng trong c\u00f9ng l\u00f2 nung c\u00f3 \u0111\u1ed9 cao v\u00e0 th\u1ea5p kh\u00e1c nhau. Sai s\u1ed1 gi\u1eefa cao nh\u1ea5t v\u00e0 th\u1ea5p nh\u1ea5t kh\u00e1 l\u1edbn. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn \u0111\u1ed9 nh\u1ea5t qu\u00e1n c\u1ee7a to\u00e0n b\u1ed9 s\u1ea3n ph\u1ea9m k\u00e9m.<\/p>\n<p>V\u00ec v\u1eady, tr\u01b0\u1edbc ti\u00ean h\u00e3y ph\u00e2n t\u00edch tr\u01b0\u1eddng t\u1eeb y\u1ebfu trong s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n, t\u1ef7 l\u1ec7 l\u00e0 bao nhi\u00eau, v\u00e0 hi\u1ec7u su\u1ea5t y\u1ebfu \u0111\u1ebfn m\u1ee9c n\u00e0o, r\u1ed3i l\u1ea7n l\u01b0\u1ee3t t\u00ecm ra c\u00e1c nguy\u00ean nh\u00e2n th\u1ef1c s\u1ef1.<\/p>\n<p>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn <strong>\u0111\u1ed9 nh\u1ea5t qu\u00e1n hi\u1ec7u su\u1ea5t<\/strong> c\u0169ng \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u \u1edf \u0111\u00e2y.<\/p>\n<p>Hi\u1ec7n t\u1ea1i, thi\u1ebft b\u1ecb c\u1ee7a c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nam ch\u00e2m l\u1edbn c\u00f3 \u00edt s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u00f4ng th\u1ee9c nguy\u00ean li\u1ec7u v\u00e0 tr\u00ecnh \u0111\u1ed9 qu\u1ea3n l\u00fd. Th\u00e1ch th\u1ee9c l\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 nh\u1ea5t qu\u00e1n hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c l\u00f4 s\u1ea3n ph\u1ea9m l\u1edbn.<\/p>\n<p>1) Hi\u1ec7u su\u1ea5t v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 nh\u1ea5t qu\u00e1n t\u1ed1t. M\u1ed9t l\u00f4 nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t kho\u1ea3ng 500KG. C\u00f3 nhi\u1ec1u mi\u1ebfng ph\u00f4i. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c mi\u1ebfng ph\u00f4i trong c\u00e1c v\u00f9ng nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau l\u00e0 nh\u1ea5t qu\u00e1n? Ngay c\u1ea3 khi hi\u1ec7u su\u1ea5t c\u1ee7a ph\u1ea7n ngo\u00e0i v\u00e0 ph\u1ea7n gi\u1eefa c\u1ee7a c\u00f9ng m\u1ed9t mi\u1ebfng ph\u00f4i l\u00e0 nh\u1ea5t qu\u00e1n, c\u0169ng c\u1ea7n ph\u1ea3i ki\u1ec3m tra v\u00e0 ki\u1ec3m so\u00e1t.<\/p>\n<p>2) Trong qu\u00e1 tr\u00ecnh gia c\u00f4ng, ph\u1ea1m vi dung sai \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1ed1t, \u0111i\u1ec1u n\u00e0y gi\u00fap ki\u1ec3m so\u00e1t \u0111\u1ed9 nh\u1ea5t qu\u00e1n hi\u1ec7u su\u1ea5t.<\/p>\n<p>3) Trong qu\u00e1 tr\u00ecnh m\u1ea1 \u0111i\u1ec7n, \u0111\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 ph\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u. M\u1ecdi b\u01b0\u1edbc ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ebfn m\u1ee9c t\u1ed1i \u0111a \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 nh\u1ea5t qu\u00e1n hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/p>\n<p>Kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ec1 m\u1ee9c \u0111\u1ed9 cao c\u1ee7a hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m, m\u00e0 c\u00f2n v\u1ec1 ki\u1ec3m so\u00e1t \u0111\u1ed9 nh\u1ea5t qu\u00e1n hi\u1ec7u su\u1ea5t trong c\u00e1c l\u00f4 s\u1ea3n ph\u1ea9m.<\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:100% !important;margin-top : 0px;margin-bottom : 0px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 1.92%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 1.92%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:100% !important;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 0px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}<\/style><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1222,"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-1224","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2024\/03\/surface-gauss-and-magnetic-flux-e1710742226361.png","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1224","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=1224"}],"version-history":[{"count":3,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1224\/revisions"}],"predecessor-version":[{"id":1418,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1224\/revisions\/1418"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1222"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}