{"id":1478,"date":"2025-03-21T03:13:13","date_gmt":"2025-03-21T03:13:13","guid":{"rendered":"https:\/\/nbaem.com\/?p=1478"},"modified":"2025-03-21T03:13:13","modified_gmt":"2025-03-21T03:13:13","slug":"quality-of-neodymium-magnets","status":"publish","type":"post","link":"https:\/\/nbaem.com\/cs\/quality-of-neodymium-magnets\/","title":{"rendered":"Kvalita neodymov\u00fdch magnet\u016f"},"content":{"rendered":"

Neodymov\u00e9 magnety<\/span><\/a> Pou\u017e\u00edvaj\u00ed se v mnoha r\u016fzn\u00fdch odv\u011btv\u00edch, proto\u017ee jsou siln\u00e9, mal\u00e9 a levn\u00e9. Je ale d\u016fle\u017eit\u00e9 se ujistit, \u017ee jsou to dobr\u00e9 magnety pro produkty, kter\u00e9 vyr\u00e1b\u00edte. Existuje n\u011bkolik v\u011bc\u00ed, kter\u00e9 mus\u00edte zkontrolovat, abyste se ujistili, \u017ee m\u00e1te dobr\u00fd neodymov\u00fd magnet. Mus\u00edte se pod\u00edvat na v\u00fdkonov\u00e9 charakteristiky, vzhled a zp\u016fsob v\u00fdroby.<\/strong><\/p>\n

\"magnetick\u00e9<\/strong><\/p>\n

V\u00fdkon<\/span><\/strong><\/h2>\n

Prvn\u00ed v\u011bc, kterou chcete zkontrolovat, je v\u00fdkon neodymov\u00e9ho magnetu. Existuje mnoho r\u016fzn\u00fdch t\u0159\u00edd neodymov\u00fdch magnet\u016f. T\u0159\u00eddy se pohybuj\u00ed od N35 do N52. \u010c\u00edm vy\u0161\u0161\u00ed \u010d\u00edslo, t\u00edm siln\u011bj\u0161\u00ed magnet a t\u00edm dra\u017e\u0161\u00ed. Nicm\u00e9n\u011b, jen proto, \u017ee m\u00e1te magnet vy\u0161\u0161\u00ed t\u0159\u00eddy, neznamen\u00e1 to, \u017ee je lep\u0161\u00ed pro va\u0161i aplikaci. Mus\u00edte v\u011bd\u011bt, co chcete, aby magnet d\u011blal. Pokud pot\u0159ebujete magnet, kter\u00fd bude pracovat v prost\u0159ed\u00ed s vysokou teplotou, mo\u017en\u00e1 budete pot\u0159ebovat magnet, kter\u00fd bude l\u00e9pe fungovat p\u0159i vysok\u00fdch teplot\u00e1ch. Pokud m\u00e1te magnet, kter\u00fd bude pou\u017eit v mal\u00e9m elektronick\u00e9m za\u0159\u00edzen\u00ed, mo\u017en\u00e1 budete pot\u0159ebovat magnet, kter\u00fd je men\u0161\u00ed a m\u00e1 siln\u011bj\u0161\u00ed magnetick\u00e9 pole.<\/strong><\/p>\n

Jedn\u00edm z test\u016f, kter\u00e9 m\u016f\u017eete prov\u00e9st, je pou\u017eit\u00ed Gaussmetru k m\u011b\u0159en\u00ed s\u00edly magnetu. Porovnejte nam\u011b\u0159enou s\u00edlu se standardizovan\u00fdmi vzorov\u00fdmi daty poskytnut\u00fdmi v\u00fdrobcem magnetu.<\/strong><\/p>\n

Dal\u0161\u00ed v\u011bc, kterou chcete zkontrolovat, je materi\u00e1lov\u00e9 slo\u017een\u00ed magnetu. Pom\u011br neodymu, \u017eeleza a boru v magnetu ur\u010duje s\u00edlu jeho magnetick\u00e9ho pole. Zp\u016fsob, jak\u00fdm byl magnet vyroben, tak\u00e9 ovlivn\u00ed jeho magnetickou s\u00edlu. Nejb\u011b\u017en\u011bj\u0161\u00ed zp\u016fsoby v\u00fdroby neodymov\u00fdch magnet\u016f jsou slinov\u00e1n\u00ed, lepen\u00ed a taven\u00ed. Abyste se ujistili, \u017ee m\u00e1te dobr\u00fd neodymov\u00fd magnet, chcete kupovat magnety od spole\u010dnosti, kter\u00e1 m\u00e1 dobrou kontrolu kvality.<\/strong><\/p>\n

 <\/p>\n

Vzhled<\/strong><\/span><\/h2>\n

Dal\u0161\u00ed v\u011bc, kterou chcete zkontrolovat, je vzhled neodymov\u00e9ho magnetu. Chcete zkontrolovat praskliny, od\u0161t\u00edpnut\u00ed a celkov\u00fd vzhled magnetu. Magnety jsou vizu\u00e1ln\u011b kontrolov\u00e1ny na jak\u00e9koli vady povrchov\u00e9 \u00fapravy nebo povlaku. Testuje se p\u0159ilnavost pokoven\u00ed. Testuje se odolnost proti korozi. Vkl\u00e1daj\u00ed je do soln\u00e9 mlhy a vlhkostn\u00ed komory, aby se ujistili, \u017ee povlak z\u016fstane na magnetu.<\/strong><\/p>\n

Chcete tak\u00e9 zkontrolovat velikost magnetu. Velikost a tvar magnetu jsou d\u016fle\u017eit\u00e9, proto\u017ee chcete, aby magnet pasoval tam, kam ho chcete um\u00edstit. V\u00fdrobci m\u011b\u0159\u00ed velikost magnetu pomoc\u00ed posuvn\u00fdch m\u011b\u0159\u00edtek, mikrometr\u016f nebo sou\u0159adnicov\u00e9ho m\u011b\u0159ic\u00edho stroje (CMM). Chcete se ujistit, \u017ee magnet bude spr\u00e1vn\u011b pasovat tam, kam ho chcete um\u00edstit.<\/strong><\/p>\n

<\/p>\n

<\/strong>Magnetick\u00e9 vlastnosti<\/strong><\/h2>\n

\"Vlastnost<\/p>\n

T\u0159et\u00ed v\u011bc, kterou chcete zkontrolovat, je magnetick\u00e1 s\u00edla magnetu. Existuje n\u011bkolik r\u016fzn\u00fdch m\u011b\u0159en\u00ed, kter\u00e9 m\u016f\u017eete pou\u017e\u00edt ke zji\u0161t\u011bn\u00ed, jak siln\u00fd magnet je. T\u0159i nejb\u011b\u017en\u011bj\u0161\u00ed m\u011b\u0159en\u00ed jsou remanence (Br), koercivita (Hc) a maxim\u00e1ln\u00ed energetick\u00fd produkt (BHmax).<\/strong><\/p>\n

Remanence (Br) je mno\u017estv\u00ed magnetismu, kter\u00e9 zbylo v magnetu pot\u00e9, co jej vyjmete z magnetick\u00e9ho pole.<\/strong><\/p>\n

Koercivita (Hc) je m\u00edra toho, jak t\u011b\u017ek\u00e9 je odebrat magnetismus z magnetu.<\/strong><\/p>\n

Maxim\u00e1ln\u00ed energetick\u00fd produkt (BHmax) je mno\u017estv\u00ed magnetick\u00e9 energie, kterou m\u016f\u017ee magnet ulo\u017eit. Vysok\u00fd BHmax je d\u016fle\u017eit\u00fd, kdy\u017e pot\u0159ebujete siln\u00fd magnet.<\/strong><\/p>\n

V\u00fdrobci pou\u017e\u00edvaj\u00ed n\u00e1stroje, jako jsou vibra\u010dn\u00ed vzorkov\u00e9 magnetometry (VSM) a permeametry k m\u011b\u0159en\u00ed t\u011bchto vlastnost\u00ed. Vezmou magnet, vlo\u017e\u00ed ho do t\u011bchto stroj\u016f a provedou s n\u00edm spoustu test\u016f. Tyto testy vytv\u00e1\u0159ej\u00ed hysterezn\u00ed k\u0159ivky.<\/strong><\/p>\n

Dal\u0161\u00ed test, kter\u00fd m\u016f\u017eete prov\u00e9st, je test ta\u017en\u00e9 s\u00edly. Vlo\u017e\u00edte magnet do stroje, kter\u00fd m\u011b\u0159\u00ed, jakou s\u00edlu je pot\u0159eba k odta\u017een\u00ed magnetu od objektu nebo k udr\u017een\u00ed magnetu na objektu. Tento test v\u00e1m \u0159ekne, jak bude magnet fungovat ve va\u0161\u00ed aplikaci.<\/strong><\/p>\n

Je\u0161t\u011b jeden test, kter\u00fd m\u016f\u017eete prov\u00e9st, je pou\u017eit\u00ed Gaussmetru. Gaussmetr m\u011b\u0159\u00ed s\u00edlu magnetick\u00e9ho pole magnetu. Tento test v\u00e1m \u0159ekne o rozlo\u017een\u00ed magnetick\u00e9ho pole magnetu a o tom, jak siln\u00fd magnet je.<\/strong><\/p>\n

 <\/p>\n

Povrchov\u00e1 \u00faprava<\/strong><\/span><\/h2>\n

Dal\u0161\u00ed v\u011bc, kterou chcete zkontrolovat, je povlak na magnetu. Povlak je aplikov\u00e1n na magnet, aby jej chr\u00e1nil p\u0159ed koroz\u00ed a opot\u0159eben\u00edm. Chcete se ujistit, \u017ee povlak z\u016fstane na magnetu.<\/strong><\/p>\n

V\u00fdrobci testuj\u00ed povlak na magnetu, aby se ujistili, \u017ee z\u016fstane na magnetu. Pou\u017e\u00edvaj\u00ed test lepic\u00ed p\u00e1skou nebo test po\u0161kr\u00e1b\u00e1n\u00edm, aby zjistili, zda povlak z\u016fstane na magnetu.<\/strong><\/p>\n

Tak\u00e9 testuj\u00ed, zda povlak ochr\u00e1n\u00ed magnet p\u0159ed rz\u00ed. Vlo\u017e\u00ed magnet do soln\u00e9 mlhy a vlhkostn\u00ed komory, aby zjistili, zda povlak zabr\u00e1n\u00ed reziv\u011bn\u00ed magnetu.<\/strong><\/p>\n

 <\/p>\n

Teplota<\/strong><\/span><\/h2>\n

Dal\u0161\u00ed v\u011bc, kterou chcete zkontrolovat, je, jak bude magnet fungovat p\u0159i vysok\u00fdch teplot\u00e1ch. Neodymov\u00e9 magnety jsou citliv\u00e9 na vysok\u00e9 teploty. Kdy\u017e vystav\u00edte magnet vysok\u00fdm teplot\u00e1m, ztrat\u00ed \u010d\u00e1st sv\u00e9 magnetick\u00e9 s\u00edly.<\/strong><\/p>\n

V\u00fdrobci testuj\u00ed, jak magnety funguj\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch. D\u011blaj\u00ed test zvan\u00fd tepeln\u00e9 cyklov\u00e1n\u00ed. Vlo\u017e\u00ed magnet do trouby a zah\u0159ej\u00ed ho na ur\u010ditou teplotu. Pot\u00e9 jej ochlad\u00ed, aby zjistili, zda magnet neztrat\u00ed \u010d\u00e1st sv\u00e9 magnetick\u00e9 s\u00edly. D\u011blaj\u00ed tak\u00e9 test zvan\u00fd tepeln\u00fd \u0161ok. Vlo\u017e\u00ed magnet do chladic\u00ed komory a ochlad\u00ed ho na ur\u010ditou teplotu. Pot\u00e9 jej vlo\u017e\u00ed do hork\u00e9 komory a zah\u0159ej\u00ed ho na ur\u010ditou teplotu. D\u011blaj\u00ed to n\u011bkolikr\u00e1t, aby zjistili, zda magnet neztrat\u00ed \u010d\u00e1st sv\u00e9 magnetick\u00e9 s\u00edly.<\/strong><\/p>\n

Existuj\u00ed dv\u011b v\u011bci, kter\u00e9 m\u016f\u017eete zkontrolovat, abyste zjistili, jak bude magnet fungovat p\u0159i vysok\u00fdch teplot\u00e1ch. Prvn\u00ed jsou teplotn\u00ed koeficienty. Teplotn\u00ed koeficienty v\u00e1m \u0159\u00edkaj\u00ed, o kolik magnet ztrat\u00ed svou magnetickou s\u00edlu, kdy\u017e ho vystav\u00edte vysok\u00fdm teplot\u00e1m.<\/strong><\/p>\n

 <\/p>\n

Soulad s p\u0159edpisy<\/strong><\/span><\/h2>\n

Posledn\u00ed v\u011bc, kterou chcete zkontrolovat, je shoda neodymov\u00e9ho magnetu. V\u00fdrobci neodymov\u00fdch magnet\u016f dodr\u017euj\u00ed mezin\u00e1rodn\u00ed normy. Nej\u010dast\u011bj\u0161\u00ed normy jsou ISO (Mezin\u00e1rodn\u00ed organizace pro normalizaci), IEC (Mezin\u00e1rodn\u00ed elektrotechnick\u00e1 komise) a ASTM (Americk\u00e1 spole\u010dnost pro testov\u00e1n\u00ed a materi\u00e1ly).<\/strong><\/p>\n

V\u00fdrobci neodymov\u00fdch magnet\u016f dodr\u017euj\u00ed proces kontroly jakosti. Kontroluj\u00ed suroviny, kter\u00e9 pou\u017e\u00edvaj\u00ed k v\u00fdrob\u011b magnet\u016f. Maj\u00ed v\u00fdrobn\u00ed proces, kter\u00e9ho se dr\u017e\u00ed. Dokumentuj\u00ed v\u0161e, co se b\u011bhem v\u00fdrobn\u00edho procesu stane. Testuj\u00ed magnety b\u011bhem v\u00fdrobn\u00edho procesu. Testuj\u00ed magnety po jejich dokon\u010den\u00ed. Vede z\u00e1znamy o v\u0161em, co testuj\u00ed. Vede z\u00e1znamy o v\u0161em, co d\u011blaj\u00ed b\u011bhem v\u00fdrobn\u00edho procesu. D\u011blaj\u00ed to, aby mohli naj\u00edt a opravit jak\u00e9koli probl\u00e9my, ke kter\u00fdm dojde b\u011bhem v\u00fdroby. D\u011blaj\u00ed to tak\u00e9 proto, aby v\u00e1m, z\u00e1kazn\u00edkovi, mohli uk\u00e1zat, \u017ee magnety vyrobili tak, jak m\u011bli.<\/strong><\/p>\n

 <\/p>\n

V t\u00e9to kapitole jsme mluvili o tom, jak zkontrolovat neodymov\u00e9 magnety, aby bylo jist\u00e9, \u017ee jsou vhodn\u00e9 pro va\u0161e produkty. Mluvili jsme o v\u00fdkonu, vzhledu, velikosti, s\u00edle, povlaku, teplot\u011b a shod\u011b. V\u00fdrobci neodymov\u00fdch magnet\u016f kontroluj\u00ed v\u0161echny tyto v\u011bci, aby se ujistili, \u017ee v\u00e1m prod\u00e1vaj\u00ed kvalitn\u00ed magnet. Cht\u011bj\u00ed zajistit, \u017ee magnet, kter\u00fd v\u00e1m prodaj\u00ed, bude fungovat ve va\u0161\u00ed aplikaci.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

Neodymov\u00e9 magnety se pou\u017e\u00edvaj\u00ed v mnoha r\u016fzn\u00fdch odv\u011btv\u00edch, proto\u017ee jsou siln\u00e9, mal\u00e9 a levn\u00e9. Ale je d\u016fle\u017eit\u00e9 se ujistit, \u017ee jsou to dobr\u00e9 magnety pro produkty, kter\u00e9 vyr\u00e1b\u00edte. Existuje n\u011bkolik v\u011bc\u00ed, kter\u00e9 je t\u0159eba zkontrolovat, abyste m\u011bli jistotu, \u017ee m\u00e1te dobr\u00fd neodymov\u00fd magnet. Vy [\u2026]<\/p>","protected":false},"author":1,"featured_media":359,"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-1478","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2022\/06\/neodymium-magnet-1.png","_links":{"self":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1478","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/comments?post=1478"}],"version-history":[{"count":3,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1478\/revisions"}],"predecessor-version":[{"id":1481,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1478\/revisions\/1481"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media\/359"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media?parent=1478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/categories?post=1478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/tags?post=1478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}