{"id":1961,"date":"2025-08-19T03:11:07","date_gmt":"2025-08-19T03:11:07","guid":{"rendered":"https:\/\/nbaem.com\/?p=1961"},"modified":"2025-08-20T06:06:04","modified_gmt":"2025-08-20T06:06:04","slug":"can-magnet-rust","status":"publish","type":"post","link":"https:\/\/nbaem.com\/cs\/can-magnet-rust\/","title":{"rendered":"Mohou magnety reziv\u011bt? Jak je chr\u00e1nit a p\u0159edch\u00e1zet korozi"},"content":{"rendered":"<p>M\u016f\u017ee <strong>magnety rezav\u011bt<\/strong>? Kr\u00e1tk\u00e1 odpov\u011b\u010f je ano\u2014<strong>n\u011bkter\u00e9 magnety se mohou korodovat<\/strong> \u010dasem, a to m\u016f\u017ee v\u00e1\u017en\u011b ovlivnit jejich s\u00edlu a \u017eivotnost. A\u0165 u\u017e pou\u017e\u00edv\u00e1te <strong>neodymov\u00e9 magnety<\/strong> v projektech DIY nebo <strong>industri\u00e1ln\u00ed magnety<\/strong> v stroj\u00edrenstv\u00ed, je kl\u00ed\u010dov\u00e9 v\u011bd\u011bt, jak a pro\u010d koroze rzi doch\u00e1z\u00ed, aby byla va\u0161e investice chr\u00e1n\u011bna. V tomto p\u0159\u00edsp\u011bvku se p\u0159esn\u011b dozv\u00edte <strong>kter\u00e9 typy magnet\u016f jsou n\u00e1chyln\u00e9 ke korozi<\/strong>, co ji zp\u016fsobuje a nejchyt\u0159ej\u0161\u00ed zp\u016fsoby, jak <strong>zabr\u00e1nit korozi magnet\u016f<\/strong> d\u0159\u00edve, ne\u017e po\u0161kod\u00ed v\u00fdkon. Poj\u010fme na to rovnou.<\/p>\n<h2>Co je Rust a pochopen\u00ed koroze<\/h2>\n<p>Rzi je b\u011b\u017en\u00e1 forma koroze, ke kter\u00e9 doch\u00e1z\u00ed, kdy\u017e \u017eelezo nebo \u017eelezn\u00e9 kovy reaguj\u00ed s kysl\u00edkem a vlhkost\u00ed. Tento proces, naz\u00fdvan\u00fd <strong>oxidace<\/strong>, vytv\u00e1\u0159\u00ed rezav\u011b hn\u011bdou \u0161upinatou l\u00e1tku zn\u00e1mou jako \u017eelezit\u00fd oxid. A\u010dkoliv je rzi specifick\u00e1 pro \u017eelezo, magnety vyroben\u00e9 s \u017eelezn\u00fdmi nebo ocelov\u00fdmi sou\u010d\u00e1stmi mohou b\u00fdt ovlivn\u011bny podobn\u00fdmi procesy koroze.<\/p>\n<h3>Typy koroze, kter\u00e9 mohou ovlivnit magnety<\/h3>\n<p>Magnety mohou \u010delit r\u016fzn\u00fdm form\u00e1m povrchov\u00e9ho po\u0161kozen\u00ed v z\u00e1vislosti na jejich materi\u00e1lu a prost\u0159ed\u00ed:<\/p>\n<ul>\n<li><strong>Rzi (\u017eelezit\u00fd oxid):<\/strong> Vyskytuje se u magnet\u016f s obsahem \u017eeleza, nap\u0159\u00edklad neodymov\u00e9 nebo ferritov\u00e9 typy.<\/li>\n<li><strong>Zmatn\u011bn\u00ed:<\/strong> Tenk\u00e1 povrchov\u00e1 vrstva, kter\u00e1 m\u011bn\u00ed barvu, ale podstatn\u011b nezhor\u0161uje strukturu; \u010dast\u011bj\u0161\u00ed u n\u011bkter\u00fdch kovov\u00fdch povlak\u016f.<\/li>\n<li><strong>Obecn\u00e1 koroze:<\/strong> \u0160ir\u0161\u00ed degradace kovu, kter\u00e1 m\u016f\u017ee oslabit jak strukturu, tak magnetick\u00fd v\u00fdkon.<\/li>\n<\/ul>\n<h3>Environment\u00e1ln\u00ed faktory, kter\u00e9 podporuj\u00ed korozi<\/h3>\n<p>Koroze pot\u0159ebuje ur\u010dit\u00e9 podm\u00ednky k za\u010d\u00e1tku a \u0161\u00ed\u0159en\u00ed. Nej\u010dast\u011bj\u0161\u00ed faktory zahrnuj\u00ed:<\/p>\n<table>\n<thead>\n<tr>\n<th>Faktor<\/th>\n<th>Vliv na korozi<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Vlhkost<\/strong><\/td>\n<td>Zrychluje oxidaci t\u00edm, \u017ee poskytuje vodu pro reakci.<\/td>\n<\/tr>\n<tr>\n<td><strong>Kysl\u00edk<\/strong><\/td>\n<td>Spojuje se s atomy \u017eeleza a vytv\u00e1\u0159\u00ed rez.<\/td>\n<\/tr>\n<tr>\n<td><strong>Soli<\/strong><\/td>\n<td>Prost\u0159ed\u00ed s mo\u0159skou vodou, jako pob\u0159e\u017en\u00ed oblasti, v\u00fdrazn\u011b zvy\u0161uj\u00ed rychlost koroze t\u00edm, \u017ee zvy\u0161uj\u00ed vodivost vody.<\/td>\n<\/tr>\n<tr>\n<td><strong>Chemik\u00e1lie<\/strong><\/td>\n<td>Kyseliny nebo pr\u016fmyslov\u00e9 p\u00e1ry mohou napadat magnetick\u00e9 povlaky a odhalit \u017eelezo.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Stru\u010dn\u011b \u0159e\u010deno, koroze nast\u00e1v\u00e1, kdy\u017e materi\u00e1l, prost\u0159ed\u00ed a p\u0159\u00edtomnost elektrolyt\u016f, jako jsou soli, spolupracuj\u00ed na rozkladu kovov\u00fdch povrch\u016f \u2014 co\u017e m\u016f\u017ee ovlivnit i magnety, pokud nejsou spr\u00e1vn\u011b chr\u00e1n\u011bny.<\/p>\n<h2>Typy magnet\u016f a jejich n\u00e1chylnost ke korozi<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/Magnet_types_and_rust_prevention_uFbnEWd3R.webp\" alt=\"Typy magnet\u016f a prevence koroze\" \/><\/p>\n<p>Ne v\u0161echny magnety rezav\u011bj\u00ed stejn\u00fdm zp\u016fsobem. Hlavn\u00edm faktorem je, zda materi\u00e1l magnetu obsahuje \u017eelezo nebo slitiny na b\u00e1zi \u017eeleza, proto\u017ee \u017eelezo je to, co oxiduje a zp\u016fsobuje rez. Zde je rychl\u00fd p\u0159ehled b\u011b\u017en\u00fdch typ\u016f magnet\u016f a jejich odolnosti v\u016f\u010di korozi:<\/p>\n<p><strong>Ferritov\u00e9 (keramick\u00e9) magnety<\/strong><\/p>\n<ul>\n<li>Vyrobeno p\u0159ev\u00e1\u017en\u011b z oxidu \u017eeleza sm\u00edchan\u00e9ho s keramick\u00fdm materi\u00e1lem<\/li>\n<li>L\u00e9pe odol\u00e1vaj\u00ed vlhkosti ne\u017e \u010dist\u00e9 kovov\u00e9 magnety, ale st\u00e1le obsahuj\u00ed \u017eelezo a mohou korodovat p\u0159i dlouhodob\u00e9m vystaven\u00ed vod\u011b nebo soli<\/li>\n<\/ul>\n<p><strong>Neodymov\u00e9 (NdFeB) magnety<\/strong><\/p>\n<ul>\n<li>Extr\u00e9mn\u011b siln\u00e9, ale s vysok\u00fdm obsahem \u017eeleza<\/li>\n<li>Velmi n\u00e1chyln\u00e9 ke korozi, pokud nejsou pokryty nebo pokud je povlak po\u0161kozen<\/li>\n<li>\u010casto pokryt\u00e9 <strong>niklem, zinkem nebo epoxidem<\/strong> k ochran\u011b<\/li>\n<\/ul>\n<p><strong>Magn\u00e9ty Alnico<\/strong><\/p>\n<ul>\n<li>Vyroben\u00e9 z hlin\u00edku, niklu a kobaltu, s ur\u010dit\u00fdm obsahem \u017eeleza<\/li>\n<li>Odoln\u011bj\u0161\u00ed v\u016f\u010di korozi ne\u017e neodym, ale st\u00e1le nejsou imunn\u00ed v drsn\u00fdch podm\u00ednk\u00e1ch<\/li>\n<\/ul>\n<p><strong>Magn\u00e9ty Smaragd Cobalt<\/strong><\/p>\n<ul>\n<li>N\u00edzk\u00fd obsah \u017eeleza, velmi odoln\u00e9 v\u016f\u010di korozi<\/li>\n<li>Lze je pou\u017e\u00edvat bez povlaku ve v\u011bt\u0161in\u011b prost\u0159ed\u00ed<\/li>\n<\/ul>\n<p><strong>B\u011b\u017en\u00e9 ochrann\u00e9 n\u00e1t\u011bry na magnety<\/strong><\/p>\n<ul>\n<li><strong>Niklov\u00e1n\u00ed<\/strong>: D\u00e1v\u00e1 leskl\u00fd povrch a dobrou ochranu proti korozi<\/li>\n<li><strong>Epoxidov\u00fd n\u00e1t\u011br<\/strong>: Vhodn\u00fd pro venkovn\u00ed, n\u00e1mo\u0159n\u00ed nebo vlhk\u00e9 aplikace<\/li>\n<li><strong>Zinkov\u00fd n\u00e1t\u011br<\/strong>: Levn\u00e1 ochrana, ale rychleji se opot\u0159ebov\u00e1v\u00e1 ne\u017e nikl<\/li>\n<li><strong>Plastov\u00fd nebo gumov\u00fd n\u00e1t\u011br<\/strong>: P\u0159id\u00e1v\u00e1 odolnost proti n\u00e1raz\u016fm spolu s ochranou proti korozi<\/li>\n<\/ul>\n<p>Stru\u010dn\u011b \u0159e\u010deno, magnety s vysok\u00fdm obsahem \u017eeleza, jako jsou ferrit a neodym, pot\u0159ebuj\u00ed spolehliv\u00e9 n\u00e1t\u011bry, aby se vyhnuly korozi, zat\u00edmco samarium-kobalt a n\u011bkter\u00e9 magnety alnico si l\u00e9pe porad\u00ed s n\u00e1ro\u010dn\u00fdmi podm\u00ednkami bez dodate\u010dn\u00e9 ochrany.<\/p>\n<h2>Pro\u010d magnety rezav\u011bj\u00ed<\/h2>\n<p>Magnety rezav\u011bj\u00ed ze stejn\u00e9ho d\u016fvodu jako jak\u00fdkoli materi\u00e1l na b\u00e1zi \u017eeleza \u2014 obsahuj\u00ed \u017eelezo, kter\u00e9 reaguje s kysl\u00edkem a vlhkost\u00ed ve vzduchu. Kdy\u017e k tomu dojde, na povrchu se tvo\u0159\u00ed \u017eelezn\u00e1 ruda (rez). Ne v\u0161echny magnety maj\u00ed stejnou slo\u017een\u00ed, ale typy jako <strong>neodym (NdFeB)<\/strong> a ferrit obsahuj\u00ed dostatek \u017eeleza, co\u017e je \u010din\u00ed n\u00e1chyln\u00fdmi ke korozi, pokud nejsou chr\u00e1n\u011bny.<\/p>\n<p>Podm\u00ednky prost\u0159ed\u00ed hraj\u00ed velkou roli. <strong>Vysok\u00e1 vlhkost, vystaven\u00ed vod\u011b, slan\u00e1 voda a kysel\u00e9 prost\u0159ed\u00ed<\/strong> urychluj\u00ed tvorbu rzi. Slan\u00e1 voda je obzvl\u00e1\u0161\u0165 drsn\u00e1, proto\u017ee s\u016fl p\u016fsob\u00ed jako elektrolyt, co\u017e usnad\u0148uje oxidaci. I kr\u00e1tkodob\u00e9 vystaven\u00ed vlhk\u00fdm nebo pob\u0159e\u017en\u00edm oblastem m\u016f\u017ee zp\u016fsobit viditeln\u00e9 zm\u011bny na nechr\u00e1n\u011bn\u00fdch magnetech.<\/p>\n<p>V\u011bt\u0161ina magnet\u016f ur\u010den\u00fdch pro b\u011b\u017en\u00e9 pou\u017eit\u00ed je pota\u017eena materi\u00e1ly jako <strong>nikl, zinek, epoxid nebo plast<\/strong> kter\u00e9 blokuj\u00ed vlhkost a kysl\u00edk. Tyto n\u00e1t\u011bry funguj\u00ed dob\u0159e, ale jakmile se od\u0161t\u00edpnou, prasknou nebo opot\u0159ebuj\u00ed, exponovan\u00e9 oblasti za\u010dnou rychle reziv\u011bt. Proto by m\u011bly b\u00fdt po\u0161kozen\u00e9 povrchy magnet\u016f opraveny nebo vym\u011bn\u011bny d\u0159\u00edve, ne\u017e se koroze roz\u0161\u00ed\u0159\u00ed a oslab\u00ed magnet.<\/p>\n<h2>P\u0159\u00edznaky, \u017ee v\u00e1\u0161 magnet rezav\u00ed nebo koroduje<\/h2>\n<p>Je pom\u011brn\u011b snadn\u00e9 poznat, kdy\u017e magnet za\u010d\u00edn\u00e1 reziv\u011bt, pokud v\u00edte, na co se d\u00edvat. Zde jsou n\u011bkter\u00e9 b\u011b\u017en\u00e9 znaky:<\/p>\n<p><strong>Vizu\u00e1ln\u00ed stopy:<\/strong><\/p>\n<ul>\n<li><strong>Zabarven\u00ed<\/strong> \u2013 Rez se \u010dasto projevuje jako \u010dervenohn\u011bd\u00e9 skvrny, ale m\u016f\u017ee se objevit tak\u00e9 \u017elut\u011b, oran\u017eov\u011b nebo tmav\u011b hn\u011bd\u011b.<\/li>\n<li><strong>Lupen\u00ed nebo olupov\u00e1n\u00ed<\/strong> \u2013 Povrch m\u016f\u017ee za\u010d\u00edt odpad\u00e1vat, zejm\u00e9na pokud je po\u0161kozen ochrann\u00fd n\u00e1t\u011br.<\/li>\n<li><strong>Drsn\u00e1 textura<\/strong> \u2013 Koroze m\u016f\u017ee proniknout do kovu, zanech\u00e1vaj\u00edc jamky nebo nerovnosti.<\/li>\n<\/ul>\n<p><strong>Zm\u011bny v\u00fdkonu:<\/strong><\/p>\n<ul>\n<li><strong>Slab\u0161\u00ed p\u0159itahov\u00e1n\u00ed<\/strong> \u2013 Rez m\u016f\u017ee po\u0161kodit povrch magnetu, \u010d\u00edm\u017e sni\u017euje jeho s\u00edlu dr\u017een\u00ed.<\/li>\n<li><strong>K\u0159ehk\u00e1 struktura<\/strong> \u2013 T\u011b\u017ek\u00e1 koroze m\u016f\u017ee zp\u016fsobit prasknut\u00ed nebo rozbit\u00ed magnet\u016f, zejm\u00e9na neodymov\u00fdch.<\/li>\n<\/ul>\n<p><strong>Jak zkontrolovat \u010dasn\u00e9 koroze:<\/strong><\/p>\n<ul>\n<li>Udr\u017eujte magnety \u010dist\u00e9 a such\u00e9, aby byly zm\u011bny z\u0159eteln\u00e9.<\/li>\n<li>Pravideln\u011b kontrolujte jak\u00e9koli \u0161kr\u00e1bance nebo od\u0161t\u00edpnut\u00ed n\u00e1t\u011bru \u2013 to jsou b\u011b\u017en\u00e9 vstupn\u00ed body pro vlhkost.<\/li>\n<li>V\u011bnujte zvl\u00e1\u0161tn\u00ed pozornost magnet\u016fm skladovan\u00fdm nebo pou\u017e\u00edvan\u00fdm venku, v bl\u00edzkosti vody nebo v vlhk\u00fdch podm\u00ednk\u00e1ch.<\/li>\n<\/ul>\n<p>V\u010dasn\u00e9 odhalen\u00ed t\u011bchto probl\u00e9m\u016f v\u00e1m m\u016f\u017ee u\u0161et\u0159it \u00fapln\u00e9 selh\u00e1n\u00ed magnetu, zvl\u00e1\u0161t\u011b pokud na n\u011b spol\u00e9h\u00e1te v n\u00e1stroj\u00edch, za\u0159\u00edzen\u00edch nebo pr\u016fmyslov\u00fdch syst\u00e9mech.<\/p>\n<h2>Ovliv\u0148uje rust v\u00fdkon magnetu<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/rust_impact_on_magnet_performance_EtzTScPJw.webp\" alt=\"dopad koroze na v\u00fdkon magnetu\" \/><\/p>\n<p>Rez m\u016f\u017ee naprosto po\u0161kodit v\u00fdkon magnetu. Kdy\u017e se za\u010dne koroze, nem\u011bn\u00ed se jen vzhled magnetu \u2013 po\u0161kozuje i samotn\u00fd materi\u00e1l. U magnet\u016f s obsahem \u017eeleza se rez roz\u0161i\u0159uje p\u0159i tvorb\u011b, co\u017e m\u016f\u017ee zp\u016fsobit <strong>vryty na povrchu, praskliny nebo olupov\u00e1n\u00ed<\/strong>. \u010casem m\u016f\u017ee magnet ztratit hmotnost a struktur\u00e1ln\u00ed pevnost.<\/p>\n<p>Samotn\u00e9 magnetick\u00e9 pole m\u016f\u017ee oslabit, pokud rez po\u0161kod\u00ed dostate\u010dnou \u010d\u00e1st povrchu magnetu nebo zp\u016fsob\u00ed odpadnut\u00ed \u010d\u00e1st\u00ed. P\u0159ilnavost tak\u00e9 trp\u00ed\u2014zejm\u00e9na u ploch\u00fdch nebo diskov\u00fdch magnet\u016f\u2014proto\u017ee drsn\u00fd, zkorodovan\u00fd povrch nedr\u017e\u00ed kontaktn\u00ed body s kovem tak dob\u0159e.<\/p>\n<p>Obvykle si v\u0161imnete v\u00e1\u017en\u00e9ho poklesu v\u00fdkonu, kdy\u017e:<\/p>\n<ul>\n<li>Povlak magnetu je \u0161patn\u011b opot\u0159ebovan\u00fd nebo olupuje se.<\/li>\n<li>Je viditeln\u00fd hlubok\u00fd rez nebo odlupov\u00e1n\u00ed materi\u00e1lu.<\/li>\n<li>Magnet za\u010d\u00edn\u00e1 odlamovat se p\u0159i lehk\u00e9m tlaku.<\/li>\n<\/ul>\n<p>Jakmile koroze dos\u00e1hne tohoto st\u00e1dia, \u010di\u0161t\u011bn\u00ed ji\u017e neznovu obnov\u00ed p\u016fvodn\u00ed s\u00edlu magnetu. Ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f, <strong>je v\u00fdm\u011bna bezpe\u010dn\u011bj\u0161\u00ed a \u00fa\u010dinn\u011bj\u0161\u00ed mo\u017enost\u00ed<\/strong>, zejm\u00e9na v aplikac\u00edch, kde z\u00e1le\u017e\u00ed na spolehlivosti\u2014jako jsou stroje, n\u00e1stroje nebo dr\u017e\u00e1ky.<\/p>\n<h2>Jak zabr\u00e1nit rezav\u011bn\u00ed magnet\u016f<\/h2>\n<p>Udr\u017eovat magnety ve dobr\u00e9m stavu nen\u00ed t\u011b\u017ek\u00e9, pokud v\u00edte, na co si d\u00e1t pozor. Rez vznik\u00e1, kdy\u017e se setkaj\u00ed vlhkost, kysl\u00edk a \u017eelezo \u2014 tak\u017ee c\u00edlem je omezit jejich expozici. Tady je, co funguje:<\/p>\n<h3>Ulo\u017ete je v spr\u00e1vn\u00e9m prost\u0159ed\u00ed<\/h3>\n<ul>\n<li><strong>Udr\u017eujte je such\u00e9<\/strong> \u2013 Nejl\u00e9pe v \u010dist\u00e9m, n\u00edzkohumiditn\u00edm prost\u0159ed\u00ed.<\/li>\n<li><strong>Vyh\u00fdbejte se teplotn\u00edm v\u00fdkyv\u016fm<\/strong> \u2013 N\u00e1hl\u00e9 zm\u011bny mohou zp\u016fsobit kondenzaci, co\u017e urychluje korozi.<\/li>\n<li><strong>Pou\u017e\u00edvejte uzav\u0159en\u00e9 kontejnery nebo s\u00e1\u010dky<\/strong> pro dlouhodob\u00e9 skladov\u00e1n\u00ed, zejm\u00e9na v bl\u00edzkosti vody.<\/li>\n<\/ul>\n<h3>Vyberte spr\u00e1vn\u00fd povlak<\/h3>\n<p>Pro magnety pou\u017e\u00edvan\u00e9 na drsn\u011bj\u0161\u00edch m\u00edstech, jako jsou venku nebo v bl\u00edzkosti vody:<\/p>\n<ul>\n<li><strong>Zvolte pota\u017een\u00e9 magnety<\/strong> \u2013 Nerez, epoxid, zinek nebo plastov\u00e9 povlaky pom\u00e1haj\u00ed blokovat vlhkost.<\/li>\n<li><strong>NBAEM nab\u00edz\u00ed zak\u00e1zkov\u00e9 mo\u017enosti ut\u011bsn\u011bn\u00ed a povrchov\u00fdch \u00faprav<\/strong> tak\u017ee magnety mohou odol\u00e1vat n\u00e1ro\u010dn\u00fdm podm\u00ednk\u00e1m jako jsou mo\u0159sk\u00e9, chemick\u00e9 nebo pr\u016fmyslov\u00e9 prost\u0159ed\u00ed.<\/li>\n<\/ul>\n<h3>\u010ci\u0161t\u011bn\u00ed a \u00fadr\u017eba<\/h3>\n<ul>\n<li>Magnety ot\u00edrejte m\u011bkk\u00fdm such\u00fdm had\u0159\u00edkem p\u0159ed ulo\u017een\u00edm.<\/li>\n<li>Pokud se nahromad\u00ed ne\u010distoty nebo mastnota, pou\u017eijte jemn\u00e9 m\u00fddlo a vodu, pot\u00e9 ihned osu\u0161te.<\/li>\n<li>Nikdy nepou\u017e\u00edvejte drsn\u00e9 kyseliny nebo siln\u00e9 z\u00e1sady \u2014 mohou odstranit ochrann\u00e9 vrstvy.<\/li>\n<\/ul>\n<h3>Vyhn\u011bte se kontaktu s vysok\u00fdm rizikem<\/h3>\n<ul>\n<li>Vynechte dlouhodob\u00e9 vystaven\u00ed <strong>vody, slan\u00e9 vod\u011b, chemik\u00e1li\u00edm a kyselin\u00e1m<\/strong>.<\/li>\n<li>V d\u00edln\u00e1ch nebo gar\u00e1\u017e\u00edch udr\u017eujte magnety mimo dosah korozivn\u00edch \u010distic\u00edch prost\u0159edk\u016f nebo kovov\u00fdch pilin, kter\u00e9 zachyt\u00e1vaj\u00ed vlhkost.<\/li>\n<\/ul>\n<h3>Profesion\u00e1ln\u00ed tipy od NBAEM<\/h3>\n<ul>\n<li>O\u0161et\u0159ujte magnety opatrn\u011b, aby nedo\u0161lo k od\u0161t\u00edpnut\u00ed nebo prasknut\u00ed povrchov\u00e9 vrstvy. I mal\u00e1 prasklina m\u016f\u017ee umo\u017enit proniknut\u00ed rzi.<\/li>\n<li>Pro pr\u016fmyslov\u00e9 pou\u017eit\u00ed pl\u00e1nujte pravideln\u00e9 kontroly a vym\u011b\u0148te po\u0161kozen\u00e9 magnety d\u0159\u00edve, ne\u017e zp\u016fsob\u00ed v\u011bt\u0161\u00ed probl\u00e9my.<\/li>\n<\/ul>\n<h2>Jak odstranit rez z magnet\u016f<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/08\/Safe_Rust_Removal_from_Magnets_tibCOqhH4.webp\" alt=\"Bezpe\u010dn\u00e9 odstra\u0148ov\u00e1n\u00ed koroze z magnet\u016f\" \/><\/p>\n<p>Pokud magnet za\u010dne vykazovat zn\u00e1mky koroze, m\u016f\u017eete jej n\u011bkdy vy\u010distit a d\u00e1le pou\u017e\u00edvat \u2014 jindy je lep\u0161\u00ed jej vym\u011bnit. Kl\u00ed\u010dem je \u010distit bez po\u0161kozen\u00ed povrchov\u00e9 vrstvy nebo tvaru magnetu, proto\u017ee oboj\u00ed ovliv\u0148uje v\u00fdkon.<\/p>\n<p><strong>Bezpe\u010dn\u00e9 metody odstra\u0148ov\u00e1n\u00ed rzi:<\/strong><\/p>\n<ul>\n<li><strong>Lehk\u00e1 povrchov\u00e1 rez:<\/strong> Pou\u017eijte m\u011bkk\u00fd had\u0159\u00edk s jemnou sm\u011bs\u00ed m\u00edrn\u00e9ho myc\u00edho prost\u0159edku a tepl\u00e9 vody. Ihned osu\u0161te, aby nedo\u0161lo k dal\u0161\u00edmu korozi.<\/li>\n<li><strong>Odoln\u00e1 rez:<\/strong> Jemn\u00e9 drhnut\u00ed nylonov\u00fdm kart\u00e1\u010dem nebo jemnou ocelovou vlnou m\u016f\u017ee pomoci, ale bu\u010fte opatrn\u00ed, abyste nepo\u0161kr\u00e1bali ochrann\u00e9 vrstvy, zejm\u00e9na u <strong>neodymov\u00e9 magnety<\/strong>.<\/li>\n<li><strong>Potahovan\u00fdch magnet\u016f:<\/strong> Vyhn\u011bte se drsn\u00fdm abraziv\u016fm a chemik\u00e1li\u00edm, kter\u00e9 mohou odstranit nikl, epoxid nebo zinkovou vrstvu.<\/li>\n<\/ul>\n<p><strong>V\u011bci, kter\u00fdm se vyhnout:<\/strong><\/p>\n<ul>\n<li>Siln\u00e9 kyseliny jako ocet u neporu\u0161en\u00fdch magnet\u016f (mohou zhor\u0161it rez, pokud se dostanou do prasklin).<\/li>\n<li>Elektrick\u00e9 n\u00e1\u0159ad\u00ed na \u010di\u0161t\u011bn\u00ed \u2014 teplo m\u016f\u017ee oslabit s\u00edlu magnetu.<\/li>\n<\/ul>\n<p><strong>Kdy vym\u011bnit magnet:<\/strong><\/p>\n<ul>\n<li>Pokud rez pronikl hluboko do materi\u00e1lu, zp\u016fsobuj\u00edc\u00ed d\u00edrkov\u00e1n\u00ed nebo droben\u00ed.<\/li>\n<li>Pokud magnet ztratil v\u00fdznamnou s\u00edlu p\u0159itahov\u00e1n\u00ed.<\/li>\n<li>Pokud se povlak olupuje a odhaluje pod n\u00edm le\u017e\u00edc\u00ed kov.<\/li>\n<\/ul>\n<p>Pro v\u00edce informac\u00ed o v\u00fdb\u011bru odoln\u00fdch v\u016f\u010di korozi materi\u00e1l\u016f si m\u016f\u017eete prohl\u00e9dnout tento <strong><a href=\"https:\/\/nbaem.com\/cs\/overview-for-types-of-magnets\/\" target=\"_blank\" rel=\"noopener\">p\u0159ehled typ\u016f magnet\u016f<\/a><\/strong> pro lep\u0161\u00ed srovn\u00e1n\u00ed mo\u017enost\u00ed vhodn\u011bj\u0161\u00edch pro va\u0161e prost\u0159ed\u00ed.<\/p>\n<h2>Zvl\u00e1\u0161tn\u00ed \u00favahy pro pr\u016fmyslov\u00e9 a komer\u010dn\u00ed pou\u017eit\u00ed<\/h2>\n<p>V pr\u016fmyslov\u00fdch a komer\u010dn\u00edch za\u0159\u00edzen\u00edch nen\u00ed rez na magnetech pouze estetick\u00fdm probl\u00e9mem \u2013 m\u016f\u017ee zp\u016fsobit v\u00e1\u017en\u00e9 odst\u00e1vky za\u0159\u00edzen\u00ed a n\u00e1kladn\u00e9 opravy. V tov\u00e1rn\u00e1ch jsou magnety \u010dasto vystaveny vlhkosti, olej\u016fm, chlad\u00edc\u00edm kapalin\u00e1m a dokonce i slan\u00e9 vod\u011b v n\u00e1mo\u0159n\u00edch aplikac\u00edch. Jak\u00e1koli koroze na povrchu magnetu m\u016f\u017ee oslabit jeho s\u00edlu p\u0159itahov\u00e1n\u00ed, po\u0161kodit okoln\u00ed stroje a ohrozit bezpe\u010dnost.<\/p>\n<p>Pro operace jako v\u00fdrobn\u00ed linky, dopravn\u00ed syst\u00e9my, magnetick\u00e9 separ\u00e1tory nebo zvedac\u00ed za\u0159\u00edzen\u00ed je pou\u017e\u00edv\u00e1n\u00ed magnet\u016f s odpov\u00eddaj\u00edc\u00ed ochranou proti korozi nezbytn\u00e9. <strong>Niklovan\u00e9 neodymov\u00e9 magnety, epoxidov\u00e9 povlakovan\u00e9 magnety nebo pln\u011b uzav\u0159en\u00e9 sestavy<\/strong> jsou b\u011b\u017enou volbou pro zvl\u00e1dnut\u00ed n\u00e1ro\u010dn\u00fdch podm\u00ednek a prodlou\u017een\u00ed \u017eivotnosti.<\/p>\n<p>NBAEM nab\u00edz\u00ed zak\u00e1zkov\u00e1 magnetick\u00e1 \u0159e\u0161en\u00ed p\u0159izp\u016fsoben\u00e1 t\u011bmto prost\u0159ed\u00edm \u2013 to zahrnuje vysoce kvalitn\u00ed povlaky, nerezov\u00e9 ocelov\u00e9 pouzdra a speci\u00e1ln\u00ed slitiny odoln\u00e9 v\u016f\u010di korozi bez sn\u00ed\u017een\u00ed magnetick\u00e9 s\u00edly. Nap\u0159\u00edklad:<\/p>\n<ul>\n<li><strong>Potravin\u00e1\u0159sk\u00e9 z\u00e1vody<\/strong> pou\u017e\u00edvaj\u00ed magnety s nerezov\u00fdm obalem, aby splnily hygienick\u00e9 normy a zabr\u00e1nily kontaminaci.<\/li>\n<li><strong>T\u011b\u017eebn\u00ed operace<\/strong> spol\u00e9haj\u00ed na epoxidov\u00e9 magnety odoln\u00e9 v\u016f\u010di vlhkosti, prachu a abrazivn\u00edm materi\u00e1l\u016fm.<\/li>\n<li><strong>N\u00e1mo\u0159n\u00ed aplikace<\/strong> zvolte t\u011b\u017ek\u00e9 uzav\u0159en\u00e9 magnety, kter\u00e9 zvl\u00e1dnou vystaven\u00ed slan\u00e9 vod\u011b.<\/li>\n<\/ul>\n<p>V\u00fdb\u011brem spr\u00e1vn\u00e9ho typu magnetu a ochrann\u00e9ho povrchu na za\u010d\u00e1tku mohou pr\u016fmyslov\u00e9 podniky v \u010cesku sn\u00ed\u017eit n\u00e1klady na \u00fadr\u017ebu, vyhnout se p\u0159eru\u0161en\u00ed v\u00fdroby a udr\u017eet kl\u00ed\u010dov\u00e9 syst\u00e9my v chodu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Zjist\u011bte, zda magnety mohou reziv\u011bt, kter\u00e9 typy jsou n\u00e1chyln\u00e9 ke korozi a jak chr\u00e1nit magnetickou s\u00edlu a prodlou\u017eit jejich \u017eivotnost<\/p>","protected":false},"author":1,"featured_media":1969,"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-1961","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\/Rusty-magnet.jpg","_links":{"self":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1961","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=1961"}],"version-history":[{"count":2,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1961\/revisions"}],"predecessor-version":[{"id":1972,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1961\/revisions\/1972"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media\/1969"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media?parent=1961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/categories?post=1961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/tags?post=1961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}