{"id":3979,"date":"2026-09-08T08:16:59","date_gmt":"2026-09-08T08:16:59","guid":{"rendered":"https:\/\/nbaem.com\/?p=3979"},"modified":"2026-08-23T04:18:47","modified_gmt":"2026-08-23T04:18:47","slug":"which-metals-are-magnetic-materials","status":"publish","type":"post","link":"https:\/\/nbaem.com\/sk\/which-metals-are-magnetic-materials\/","title":{"rendered":"Ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly \u2013 zoznam a sprievodca"},"content":{"rendered":"<p>Nie v\u0161etky kovy pri\u0165ahuj\u00fa magnety a vedomie <strong>ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly<\/strong> m\u00f4\u017ee u\u0161etri\u0165 v\u00e1\u0161 \u010das, n\u00e1mahu a n\u00e1kladn\u00e9 materi\u00e1lne chyby.<\/p>\n<p>Zatia\u013e \u010do \u010dist\u00e9 prvky ako <strong>\u017eelezo<\/strong>, <strong>nikel<\/strong>, a <strong>kobalt<\/strong> s\u00fa prirodzene <strong>feromagnetick\u00e9<\/strong>, be\u017en\u00e9 zliatiny ako <strong>nerezov\u00e1 oce\u013e<\/strong> sa spr\u00e1vaj\u00fa \u00faplne odli\u0161ne v z\u00e1vislosti od ich kry\u0161talickej \u0161trukt\u00fary.<\/p>\n<p>V tomto sprievodcovi objav\u00edte definit\u00edvny zoznam <strong>magnetick\u00fdch kovov<\/strong>, rozbali\u0165 zlo\u017eit\u00e9 v\u00fdnimky zliatin a presne zisti\u0165, \u010do pri\u013ene, \u010do odpudzuje a pre\u010do.<\/p>\n<p>Pojdime rovno na vec.<\/p>\n<h2>R\u00fdchly sprievodca magnetick\u00fdmi kovmi<\/h2>\n<p>Pochopenie <strong>ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly<\/strong> je nevyhnutn\u00fd pre optimaliz\u00e1ciu elektromagnetick\u00e9ho n\u00e1vrhu, efekt\u00edvnos\u0165 motorov a v\u00fdberu \u0161truktur\u00e1lnych komponentov. Kovy sa delia na odli\u0161n\u00e9 magnetick\u00e9 kateg\u00f3rie na z\u00e1klade ich at\u00f3mov\u00e9ho spinov\u00e9ho elektr\u00f3nov\u00e9ho a dom\u00e9nov\u00e9ho usporiadania.<\/p>\n<h3>J\u00e1drov\u00e9 feromagnetick\u00e9 prvky<\/h3>\n<p>Tieto \u010dist\u00e9 prvky vykazuj\u00fa siln\u00fd, spont\u00e1nny pr\u00ed\u0165a\u017elivos\u0165 k magnetick\u00fdm poliam a udr\u017eiavaj\u00fa magnetiz\u00e1ciu:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>\u017delezo (Fe):<\/strong> \u0160tandardn\u00e1 z\u00e1klad\u0148a pre vysok\u00fa magnetick\u00fa permeabilitu a elektromagnetick\u00e9 jadrov\u00e9 n\u00e1vrhy.<\/li>\n<li><strong>Nikel (Ni):<\/strong> Udr\u017eiava siln\u00e9 feromagnetick\u00e9 vlastnosti s integrovanou odolnos\u0165ou vo\u010di kor\u00f3zii.<\/li>\n<li><strong>Kobalt (Co):<\/strong> Kritick\u00e9 pre vysokoteplotn\u00e9 aplik\u00e1cie v\u010faka mimoriadne vysok\u00e9mu Curieho bodu.<\/li>\n<li><strong>Gadol\u00ednium (Gd):<\/strong> Prejavuje feromagnetick\u00e9 spr\u00e1vanie pod izbovou teplotou (pod 20\u00b0C \/ 68\u00b0F).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Be\u017en\u00e9 magnetick\u00e9 zliatiny<\/h3>\n<p>Vyu\u017e\u00edvame navrhnut\u00e9 <strong>trval\u00e9 magnetick\u00e9 zliatiny<\/strong> a m\u00e4kk\u00e9 magnetick\u00e9 materi\u00e1ly na dosiahnutie konkr\u00e9tnych cie\u013eov hustoty toku:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Neod\u00fdm-\u017eelezo-b\u00f3r (NdFeB):<\/strong> Najvy\u0161\u0161ie energiov\u00e9 produkty permanentn\u00e9 magnety pre pohonn\u00e9 s\u00fastavy EV a robotiku.<\/li>\n<li><strong>Samarium-kobalt (SmCo):<\/strong> Magnety s vysokou koercivitou optimalizovan\u00e9 pre extr\u00e9mne teploty a koroz\u00edvne prostredia.<\/li>\n<li><strong>AlNiCo a ferit\/ keramika:<\/strong> N\u00e1kladovo efekt\u00edvne materi\u00e1ly s vysokou tepelnou stabilitou a elektrickou odolnos\u0165ou.<\/li>\n<li><strong>Oce\u013eov\u00e9 oce\u013eov\u00e9 a liatinov\u00e9:<\/strong> \u0160tandardn\u00e9 feromagnetick\u00e9 kon\u0161truk\u010dn\u00e9 materi\u00e1ly pre vedenie toku a r\u00e1m motorov.<\/li>\n<li><strong>FeCrCo:<\/strong> Pru\u017en\u00e9, obr\u00e1bate\u013en\u00e9 zliatiny prisp\u00f4soben\u00e9 na vlastn\u00e9 geometrick\u00e9 konfigur\u00e1cie.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Nekovov\u00e9 kovy<\/h3>\n<p>Tieto kovy nepreukazuj\u00fa praktick\u00e9 pri\u0165ahovanie k permanentn\u00fdm magnetom za \u0161tandardn\u00fdch priemyseln\u00fdch podmienok:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Hlin\u00edk, me\u010f, mosadz, bronz, zlato, striebro, titan, olovo<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Hlavn\u00e1 porovn\u00e1vacia matica<\/h3>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">N\u00e1zov kovu<\/th>\n<th style=\"text-align: left;\">Magnetick\u00e1 kateg\u00f3ria<\/th>\n<th style=\"text-align: left;\">Relat\u00edvna magnetick\u00e1 permeabilita<\/th>\n<th style=\"text-align: left;\">Prim\u00e1rne priemyseln\u00e9 uplatnenie<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>\u010cist\u00e9 \u017eelezo (Fe)<\/strong><\/td>\n<td style=\"text-align: left;\">Feromagnetick\u00e9<\/td>\n<td style=\"text-align: left;\">5 000 \u2013 200 000<\/td>\n<td style=\"text-align: left;\">J\u00e1dra transform\u00e1torov, solenoidy<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>NdFeB (Neod\u00fdm)UNK<\/strong><\/td>\n<td style=\"text-align: left;\">Permanentn\u00e9 feromagnetick\u00e9<\/td>\n<td style=\"text-align: left;\">1.05<\/td>\n<td style=\"text-align: left;\">Vysokoefekt\u00edvne elektromotory pre EV, pohony<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Nickel (Ni)<\/strong><\/td>\n<td style=\"text-align: left;\">Feromagnetick\u00e9<\/td>\n<td style=\"text-align: left;\">100 \u2013 600<\/td>\n<td style=\"text-align: left;\">Bat\u00e9riov\u00e9 svorky, magnetick\u00e1 ochrana<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Kobalt (Co)<\/strong><\/td>\n<td style=\"text-align: left;\">Feromagnetick\u00e9<\/td>\n<td style=\"text-align: left;\">250<\/td>\n<td style=\"text-align: left;\">Vysokoteplotn\u00e9 magnetick\u00e9 zostavy<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Uhl\u00edkov\u00e1 oce\u013e<\/strong><\/td>\n<td style=\"text-align: left;\">Feromagnetick\u00e9<\/td>\n<td style=\"text-align: left;\">100 \u2013 1 000<\/td>\n<td style=\"text-align: left;\">Priemyseln\u00e9 kryty motorov, kon\u0161truk\u010dn\u00e9 r\u00e1my<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Hlin\u00edk<\/strong><\/td>\n<td style=\"text-align: left;\">Paramagnetick\u00e1<\/td>\n<td style=\"text-align: left;\">1.000022<\/td>\n<td style=\"text-align: left;\">Leteckotechnick\u00e9 \u0161trukt\u00fary, v\u00fdmenn\u00edky tepla<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Me\u010f<\/strong><\/td>\n<td style=\"text-align: left;\">Diamagnetick\u00e1<\/td>\n<td style=\"text-align: left;\">0.99999<\/td>\n<td style=\"text-align: left;\">Vysoko vodiv\u00e9 elektrick\u00e9 vinut\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Fyzika magnetizmu kovov<\/h2>\n<p>Pochopenie toho, pre\u010do ur\u010dit\u00e9 kovy reaguj\u00fa na magnetick\u00e9 polia, vy\u017eaduje sk\u00famanie mechaniky na at\u00f3movej \u00farovni. V na\u0161ich sk\u00fa\u0161obn\u00fdch a v\u00fdrobn\u00fdch procesoch hodnot\u00edme spr\u00e1vanie kovov pod\u013ea \u0161tyroch vedeck\u00fdch klasifik\u00e1ci\u00ed:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Feromagnetick\u00e9:<\/strong> Preukazuje siln\u00e9 magnetick\u00e9 pri\u0165ahovanie a udr\u017eiava permanentn\u00fa magnetiz\u00e1ciu v\u010faka paraleln\u00e9mu usporiadaniu spinov.<\/li>\n<li><strong>Paramagnetick\u00e9:<\/strong> Ukazuje slab\u00e9, do\u010dasn\u00e9 pritla\u010denie v extern\u00fdch magnetick\u00fdch poliach, ale pri ich odstr\u00e1nen\u00ed zost\u00e1va \u017eiadna zvy\u0161kov\u00e1 magnetiz\u00e1cia.<\/li>\n<li><strong>Diamagnetick\u00e9:<\/strong> M\u00e1 sp\u00e1rovan\u00e9 elektr\u00f3ny, ktor\u00e9 vytv\u00e1raj\u00fa slab\u00fa odpudzuj\u00facu silu vo\u010di extern\u00fdm magnetick\u00fdm poliam.<\/li>\n<li><strong>Ferrimagnetick\u00e9:<\/strong> Zobrazuje opa\u010dn\u00e9 at\u00f3mov\u00e9 magnetick\u00e9 momenty nerovnakej sily, typick\u00e9 pre zlo\u017eit\u00e9 oxide \u017eeleza.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Fyzik\u00e1lne faktory metallic\u00e9ho magnetizmu<\/h3>\n<p>Tri jadrov\u00e9 fyzik\u00e1lne faktory ur\u010duj\u00fa, \u010di kov vykazuje magnetick\u00e9 vlastnosti:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Usmernenie elektr\u00f3nov\u00e9ho \u0161pir\u00e1lu:<\/strong> Nes\u00fadr\u017eate\u013en\u00e9 valen\u010dn\u00e9 elektr\u00f3ny vytv\u00e1raj\u00fa \u010dist\u00e9 magnetick\u00e9 momenty. Siln\u00e9 magnetick\u00e9 prvky s usporiadan\u00fdmi spinmi s\u00fa dr\u017ean\u00e9 na mieste kvantov\u00fdmi v\u00fdmenov\u00fdmi interakciami.<\/li>\n<li><strong>Domenov\u00e9 \u0161trukt\u00fary:<\/strong> Miliardy at\u00f3mov\u00fdch momentov sa zhlukuj\u00fa do lokalizovan\u00fdch z\u00f3n naz\u00fdvan\u00fdch magnetick\u00e9 domeny. Aplikovan\u00edm vonkaj\u0161ieho po\u013ea sa tieto dom\u00e9ny usporiadaj\u00fa paralelne, \u010d\u00edm sa maximalizuje celkov\u00e1 hustota toku. Sk\u00faman\u00edm <a href=\"https:\/\/nbaem.com\/sk\/magnetic-domains-in-samarium-cobalt-magnets\/\">magnetick\u00fdch dom\u00e9n v magnetoch z i kobaltu- samar<\/a> predv\u00e1dza, ako hust\u00e9 hranice dom\u00e9n br\u00e1nia n\u00e1hodn\u00e9mu demagnetizovaniu.<\/li>\n<li><strong>Krystalick\u00e1 mrie\u017eka a usporiadanie:<\/strong> Krystalick\u00e9 mrie\u017eky stredne via\u013een\u00e9 (BCC), ako napr\u00edklad alpha-\u017eelezo, prirodzene podporuj\u00fa feromagnetick\u00e9 usporiadanie. Strukt\u00fary s centrom na tv\u00e1rovom poli (FCC), ako napr\u00edklad austenitn\u00e1 oce\u013e, znova potl\u00e1\u010daj\u00fa atomov\u00e9 magnetick\u00e9 momenty a zost\u00e1vaj\u00fa nemagnetick\u00e9.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Teplota Curie a limity demagnetiz\u00e1cie<\/h3>\n<p>Term\u00e1lna energia p\u00f4sob\u00ed ako priamy proti-\u00fa\u010dinnik magnetick\u00e9ho poriadku. Ako sa prev\u00e1dzkov\u00e9 teploty zvy\u0161uj\u00fa, tepeln\u00e9 stiahnutie oslabuje hranice dom\u00e9n a zni\u017euje celkov\u00fa magnetick\u00fa hustotu toku.<\/p>\n<p>Ke\u010f kov dosiahne svoju <strong>Teplota Curie<\/strong>, tepeln\u00e1 energia \u00faplne prehlasuje v\u00fdmenu interakcie. Kov strat\u00ed spont\u00e1nnu magnetiz\u00e1ciu a premen\u00ed sa na paramagnetick\u00fd material.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Kobalt (Co):<\/strong> Curie Point na 1 121\u00b0C<\/li>\n<li><strong>\u017delezo (Fe):<\/strong> Curie Point na 770\u00b0C<\/li>\n<li><strong>Nikel (Ni):<\/strong> Curie Point na 358\u00b0C<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Prev\u00e1dzkov\u00e9 prehriatie nad kritick\u00e9 hranice vedie k nevratn\u00e9mu tepeln\u00e9mu po\u0161kodeniu. Zoh\u013eadnenie t\u00fdchto tepeln\u00fdch limitov zabra\u0148uje z\u00e1va\u017en\u00e9mu <a href=\"https:\/\/nbaem.com\/sk\/cause-demagnetization-in-permanent-magnet-motors\/\">demagnetiz\u00e1cii v motoroch s permanentn\u00fdm magnetom<\/a>, \u010d\u00edm sa zachov\u00e1va \u00fa\u010dinnos\u0165 to\u010div\u00e9ho momentu motora a jeho \u0161truktur\u00e1lne magnetick\u00e9 vlastnosti.<\/p>\n<h2>Poruchy magnetick\u00fdch zliat\u00edn a materi\u00e1lov s permanentn\u00fdm magnetom<\/h2>\n<p>V\u00fdber spr\u00e1vnych zliatin permanentn\u00fdch magnetov z\u00e1vis\u00ed od prev\u00e1dzkovacej teploty, potreby hustoty toku a mechanick\u00fdch obmedzen\u00ed. Navrhujeme priemyseln\u00e9 magnetick\u00e9 materi\u00e1ly optimalizovan\u00e9 pre extr\u00e9mny v\u00fdkon, vysok\u00fa remanenciu a maxim\u00e1lny energetick\u00fd produkt (BHmax).<\/p>\n<h3>Rare-Earth permanentn\u00e9 magnety<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Sintezovan\u00e9 a viazan\u00e9 neod\u00fdmov\u00e9 (NdFeB):<\/strong> Poskytuje najvy\u0161\u0161\u00ed energetick\u00fd produkt (BHmax a\u017e 52 MGOe). Ide\u00e1lne pre vysoce \u00fa\u010dinn\u00e9 elektrick\u00e9 motory a kompaktn\u00e9 pohony vy\u017eaduj\u00face maxim\u00e1lny tok v minim\u00e1lnych priestorov\u00fdch \u00fastrojoch.<\/li>\n<li><strong>Samarium Kobalt (SmCo):<\/strong> Nezastupite\u013en\u00e9 pre vysokoteplotn\u00e9 prostredie v leteckom a automobilovom priemysle. Pri hodnoten\u00ed <a href=\"https:\/\/nbaem.com\/sk\/samarium-cobalt-vs-neodymium-magnets\/\">sam\u00e1rium-kobalt versus Nd- magnety<\/a>, SmCo poskytuje vynikaj\u00facu tepeln\u00fa stabilitu (prev\u00e1dzka do 350\u00b0C) a inherentn\u00fa odolnos\u0165 vo\u010di oxid\u00e1cii bez povrchov\u00e9ho potia\u0148a. In\u017einieri klad\u00faci ot\u00e1zku <a href=\"https:\/\/nbaem.com\/sk\/are-samarium-cobalt-magnets-stronger-than-neodymium\/\">s\u00fa magnety k\u00e9s\u0165ie kov SmCo silnej\u0161ie ako neod\u00fdm<\/a> by mali poznamena\u0165, \u017ee hoci NdFeB vyhr\u00e1va na \u0161pi\u010dnej sile pri izbovej teplote, SmCo si udr\u017e\u00ed magnetick\u00fa silu pri extr\u00e9mnom teple.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Konzervovan\u00e9 a priemyseln\u00e9 zliatiny<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>AlNiCo zliatiny:<\/strong> Vynikaj\u00fa ve\u013ek\u00fa remanenciu (Br) a tepeln\u00fa stabilitu a\u017e do 520 \u00b0C. Ni\u017e\u0161ia koercivita si vy\u017eaduje \u0161pecifick\u00fd n\u00e1vrh obvodu na zabr\u00e1nenie demagnetiz\u00e1cie.<\/li>\n<li><strong>Keramick\u00e9 \/ feritov\u00e9 magnety:<\/strong> Ekonomick\u00e9 priemyseln\u00e9 materi\u00e1ly s vysokou elektrickou rezistenciou, ktor\u00e9 eliminuj\u00fa v\u00edriv\u00e9 straty pri vysok\u00fdch frekvenci\u00e1ch.<\/li>\n<li><strong>FeCrCo a flexibiln\u00e9 magnety:<\/strong> Obrobite\u013en\u00e9 a prisp\u00f4sobite\u013en\u00e9 mo\u017enosti vhodn\u00e9 pre zlo\u017eit\u00e9 geometrie, presn\u00e9 vtl\u00e1\u010danie alebo vstrekovanie.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>V\u00fdkonnostn\u00e1 matica zliatin magnetov<\/h3>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Materi\u00e1l zliatiny<\/th>\n<th style=\"text-align: left;\">Maxim\u00e1lny energiu produkt (BHmax)<\/th>\n<th style=\"text-align: left;\">Maxim\u00e1lna prev\u00e1dzkov\u00e1 teplota<\/th>\n<th style=\"text-align: left;\">K\u013e\u00fa\u010dov\u00e1 priemyseln\u00e1 v\u00fdhoda<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>Sinerovan\u00e9 NdFeB<\/strong><\/td>\n<td style=\"text-align: left;\">35 \u2013 52 MGOe<\/td>\n<td style=\"text-align: left;\">80\u00b0C \u2013 220\u00b0C<\/td>\n<td style=\"text-align: left;\">Nekompromisn\u00e1 sila po\u013ea a koercivita<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Samarium-kobalt (SmCo)<\/strong><\/td>\n<td style=\"text-align: left;\">18 \u2013 32 MGOe<\/td>\n<td style=\"text-align: left;\">250 \u00b0C \u2013 350 \u00b0C<\/td>\n<td style=\"text-align: left;\">Vysok\u00e1 tepeln\u00e1 stabilita a odolnos\u0165 vo\u010di kor\u00f3zii<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>AlNiCo<\/strong><\/td>\n<td style=\"text-align: left;\">5 \u2013 10 MGOe<\/td>\n<td style=\"text-align: left;\">520\u00b0C<\/td>\n<td style=\"text-align: left;\">V\u00fdnimo\u010dn\u00e1 zotrva\u010dnos\u0165 pri extr\u00e9mnych teplot\u00e1ch<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Ferrit \/ keramika<\/strong><\/td>\n<td style=\"text-align: left;\">1.1 \u2013 4.5 MGOe<\/td>\n<td style=\"text-align: left;\">250\u00b0C<\/td>\n<td style=\"text-align: left;\">N\u00edzke materi\u00e1lov\u00e9 n\u00e1klady a vysok\u00e1 elektrick\u00e1 reaktancia<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>V\u00fdnimka zo z nerezu: pre\u010do niektor\u00e9 triedy zoxiduj\u00fa a in\u00e9 nie<\/h2>\n<p>Ke\u010f n\u00e1s kupuj\u00faci oslovia <strong>ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly<\/strong>, nerezov\u00e1 oce\u013e zvy\u010dajne sp\u00f4sobuje zm\u00e4tok. Be\u017en\u00e9 myln\u00e9 presved\u010denie je, \u017ee v\u0161etka nerezov\u00e1 oce\u013e je nemagnetick\u00e1, ale skuto\u010dn\u00e1 odpove\u010f z\u00e1vis\u00ed v\u00fdhradne od krystalickej \u0161trukt\u00fary vytvorenej po\u010das spracovania zliatiny.<\/p>\n<h3>Austenitick\u00e1 nerezov\u00e1 oce\u013e (s\u00e9ria 300)<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>\u0160trukt\u00fara:<\/strong> Krystalick\u00e1 mrie\u017eka s kubickou s\u00fastredou plochou (FCC).<\/li>\n<li><strong>Magnetick\u00e9 spr\u00e1vanie:<\/strong> Nemagnetick\u00e1 v plne annealovan\u00fdch stavoch.<\/li>\n<li><strong>K\u013e\u00fa\u010dov\u00e9 charakteristiky:<\/strong> Zliatiny ako 304 a 316 maj\u00fa vysok\u00fd obsah niklu, ktor\u00fd stabilizuje nemagnetick\u00fa FCC f\u00e1zu.<\/li>\n<li><strong>Vplyv spracovania:<\/strong> Extr\u00e9mne k\u00f3rov\u00e9 spracovanie, obr\u00e1banie alebo zv\u00e1ranie deformuje at\u00f3mov\u00fa \u0161trukt\u00faru na martenzit, \u010do sp\u00f4sobuje lok\u00e1lny, mierny magnetick\u00fd \u0165ah. \u010casto odpor\u00fa\u010dame triedy s\u00e9rie 300 pre citliv\u00e9 ob\u00e1lky, aby sa predi\u0161lo parasitick\u00e9mu magnetick\u00e9mu toku alebo ne\u017eiaducim <a href=\"https:\/\/nbaem.com\/sk\/what-is-magnetic-coupling-in-transformer\/\">magnetick\u00e1 pr\u00ed\u0165a\u017elivos\u0165 v transformerov\u00fdch syst\u00e9moch<\/a> a prec\u00edzna elektronika.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Ferritick\u00fd nerezov\u00fd materi\u00e1l (seri\u00e1l 400)<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>\u0160trukt\u00fara:<\/strong> Krystalick\u00e1 mrie\u017eka s centrom tela v pod\u013ea kubickej s\u00faradnice (BCC).<\/li>\n<li><strong>Magnetick\u00e9 spr\u00e1vanie:<\/strong> Do\u010dasne feromagnetick\u00e9.<\/li>\n<li><strong>K\u013e\u00fa\u010dov\u00e9 charakteristiky:<\/strong> Trieda 430 obsahuje vysok\u00fd obsah chr\u00f3mu bez pr\u00eddavku niklu, udr\u017eiavaj\u00faca stabiln\u00fa \u0161trukt\u00faru BCC pri izbovej teplote. Pon\u00faka siln\u00fa magnetick\u00fa pr\u00ed\u0165a\u017elivos\u0165, dobr\u00fa odolnos\u0165 vo\u010di kor\u00f3zii a cenovo efekt\u00edvny v\u00fdkon pre automobily z\u00e1baly a panelov spotrebi\u010dov.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Martenzitick\u00e1 nerezov\u00e1 oce\u013e (seri\u00e1l 400)<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>\u0160trukt\u00fara:<\/strong> Mrie\u017eka s centrom tela v tetragonalnom (BCT) alebo BCC usporiadan\u00ed.<\/li>\n<li><strong>Magnetick\u00e9 spr\u00e1vanie:<\/strong> \u00daplne feromagnetick\u00e9.<\/li>\n<li><strong>K\u013e\u00fa\u010dov\u00e9 charakteristiky:<\/strong> Tak\u00e9 triedy ako 410 a 420 obsahuj\u00fa vy\u0161\u0161ie hladiny uhl\u00edka, \u010do ich rob\u00ed tepelne spracovate\u013en\u00fdmi pre vysok\u00fa mechanick\u00fa pevnos\u0165, tvrdos\u0165 a odolnos\u0165 vo\u010di opotrebeniu pri zachovan\u00ed silnej magnetickej pr\u00ed\u0165a\u017elivosti.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Porovn\u00e1vacia matica \u0161tandardov nerezovej ocele<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Zliatinov\u00e1 trieda<\/th>\n<th style=\"text-align: left;\">Mrie\u017ekov\u00e1 \u0161trukt\u00fara<\/th>\n<th style=\"text-align: left;\">Ananick\u00e9 magnetick\u00e9 stavy<\/th>\n<th style=\"text-align: left;\">Vplyv spracovania<\/th>\n<th style=\"text-align: left;\">Prim\u00e1rne stupne<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>Austenitick\u00fd<\/strong><\/td>\n<td style=\"text-align: left;\">Kubick\u00e1 mrie\u017eka s pevnou stenou (FCC)<\/td>\n<td style=\"text-align: left;\">Nemagnetick\u00fd<\/td>\n<td style=\"text-align: left;\">Vyv\u00edja mal\u00e9 magnetizovanie pri studenom conen\u00ed<\/td>\n<td style=\"text-align: left;\">304, 316<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Ferritick\u00fd<\/strong><\/td>\n<td style=\"text-align: left;\">Kubick\u00e1 mrie\u017eka s centrom na b\u00e1ze (BCC)<\/td>\n<td style=\"text-align: left;\">Silno feromagnetick\u00fd<\/td>\n<td style=\"text-align: left;\">Udr\u017eiava pln\u00e9 feromagnetizmus; odoln\u00fd vo\u010di tepelnej \u00faprave<\/td>\n<td style=\"text-align: left;\">430<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Martenzitick\u00fd<\/strong><\/td>\n<td style=\"text-align: left;\">Tetragon\u00e1lna mrie\u017eka s centrom na b\u00e1ze<\/td>\n<td style=\"text-align: left;\">Silno feromagnetick\u00fd<\/td>\n<td style=\"text-align: left;\">Udr\u017eiava feromagnetizmus; tvrdite\u013en\u00fd tepeln\u00fdm spracovan\u00edm<\/td>\n<td style=\"text-align: left;\">410, 420<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Priemyseln\u00e9 aplik\u00e1cie: Ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly v B2B technol\u00f3gi\u00e1ch?<\/h2>\n<p>Dod\u00e1vame \u0161peci\u00e1lne zliatinov\u00e9 s\u00fapravy naprie\u010d glob\u00e1lnymi v\u00fdrobn\u00fdmi odvetviami, kde v\u00fdber <strong>ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly<\/strong> ur\u010duje kon\u0161trukciu \u0161trukt\u00far, \u00fa\u010dinnos\u0165 a prenos torzu.<\/p>\n<h3>Automobilov\u00fd priemysel a elektromobily (EV)<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Statorov\u00e9 a rotorov\u00e9 lamin\u00e1tov\u00e9 jadr\u00e1:<\/strong> Sprac\u00favame tenkostenn\u00e9, vysokomagnetick\u00e9 lamin\u00e1ty z ocele s vysokou pri\u013enavos\u0165ou k zni\u017eovaniu v\u00edriv\u00fdch str\u00e1t v vysokor\u00fdchlostn\u00fdch elektrick\u00fdch pohonom.<\/li>\n<li><strong>Permanentn\u00fd magnet synchronn\u00e9 stroje (PMSM):<\/strong> V\u00fdkon pohonu z\u00e1vis\u00ed od vysoko-koercivity sinterovanej NdFeB. V\u00fdber spr\u00e1vneho <a href=\"https:\/\/nbaem.com\/sk\/what-motor-magnets-used-in-permanent-magnet-motors\/\">motorov\u00e9ho magnetu pou\u017e\u00edvan\u00e9ho v permanentn\u00fdch magnetov\u00fdch motoroch<\/a> zabezpe\u010duje maxim\u00e1lnu hustotu torxu a tepeln\u00fa stabilitu pri \u0165a\u017ekom za\u0165a\u017een\u00ed.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Presn\u00e1 elektronika a robotika<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Jadr\u00e1 servopohonov:<\/strong> Lacno remanentn\u00e9 m\u00e4kk\u00e9 \u017eelezn\u00e9 kry\u0161t\u00e1ly umo\u017e\u0148uj\u00fa presn\u00e9 sp\u00e4tnovazba polohy bez ru\u0161iv\u00e9ho vplyvu zvy\u0161ku fluxu.<\/li>\n<li><strong>Senzory a zostavy pohonov:<\/strong> Presne br\u00fasen\u00e9 zliatiny NdFeB a SmCo poh\u00e1\u0148aj\u00fa miniat\u00farne pohony, sp\u00fa\u0161\u0165acie senzory a mikrof\u00f3nov\u00e9 reproduktory vy\u017eaduj\u00face ostr\u00e9 magnetick\u00e9 prep\u00ednanie.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Energia a \u0165a\u017ek\u00fd priemysel<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Vetern\u00e9 gener\u00e1tory:<\/strong> Utility-scale direct-drive turbines depend on high-flux permanent magnet rotors. Integrating rare-earth magnets into <a href=\"https:\/\/nbaem.com\/sk\/magnetic-wind-power\/\">magnetick\u00e1 vetern\u00e1 energia<\/a> platforms maximizes power output while lowering maintenance downtime.<\/li>\n<li><strong>Magnetic Separators &amp; Industrial Motors:<\/strong> Sintered ceramic ferrites and AlNiCo alloys extract iron contaminants from processing lines and maintain robust duty cycles in heavy-duty industrial pumps.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Medic\u00edna a \u0161pecializovan\u00e1 technika<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>komponenty NMR a MRI:<\/strong> Ultra-rovnomern\u00e9 magnetick\u00e9 polia vy\u017eaduj\u00fa \u0161pecializovan\u00e9 m\u00e4kk\u00e9 magnetick\u00e9 \u017eezl\u00e1 spolupracuj\u00face s superconducting syst\u00e9my.<\/li>\n<li><strong>Nediakostn\u00e9 chirurgick\u00e9 n\u00e1stroje:<\/strong> Kombinujeme ne\u017eiaduce magnetick\u00e9 titanov\u00e9 alebo 316Lustenov\u00fdm nerezov\u00fdm oce\u013eov\u00fdm n\u00e1strojom s lokalizovan\u00fdmi cie\u013eov\u00fdmi magnetmi na bezpe\u010dn\u00e9 vedenie robotick\u00fdch chirurgick\u00fdch zariaden\u00ed okolo zobrazovac\u00edch zariaden\u00ed.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Krit\u00e9ri\u00e1 v\u00fdberu a n\u00e1vrhu vlastnej mont\u00e1\u017ee<\/h2>\n<p>V\u00fdber, ktor\u00e9 kovy s\u00fa magnetick\u00e9 materi\u00e1ly pre va\u0161u aplik\u00e1ciu, vy\u017eaduje vyv\u00e1\u017eenie surov\u00fdch fyzik\u00e1lnych vlastnost\u00ed s kon\u0161truk\u010dn\u00fdmi obmedzeniami. Hodnot\u00edme konkr\u00e9tne prostredn\u00e9 a mechanick\u00e9 parametre, aby sme zos\u00faladili spr\u00e1vne magnetick\u00e9 zliatiny s va\u0161imi cie\u013eov\u00fdmi v\u00fdkonnostn\u00fdmi metr\u00edkami.<\/p>\n<h3>K\u013e\u00fa\u010dov\u00e9 dizajnov\u00e9 premenn\u00e9<\/h3>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Variabiln\u00fd<\/th>\n<th style=\"text-align: left;\">Dopad in\u017einierstva<\/th>\n<th style=\"text-align: left;\">Prim\u00e1rne \u00favahy<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>Prev\u00e1dzkov\u00e1 teplota<\/strong><\/td>\n<td style=\"text-align: left;\">Ovl\u00e1da rizik\u00e1 demagnetiz\u00e1cie<\/td>\n<td style=\"text-align: left;\">Limity Curieho body, reverzibiln\u00e9 teplotn\u00e9 s\u00fa\u010dinitele<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Riziko kor\u00f3zie<\/strong><\/td>\n<td style=\"text-align: left;\">Ur\u010duje ochrann\u00e9 povlaky<\/td>\n<td style=\"text-align: left;\">Chemick\u00e9 vystavenie, vlhkos\u0165, odolnos\u0165 proti slan\u00e9mu postreku<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Po\u017eadovan\u00e1 sila dr\u017eania<\/strong><\/td>\n<td style=\"text-align: left;\">Ur\u010duje fyzick\u00fa geometriu<\/td>\n<td style=\"text-align: left;\">Mechanick\u00e9 za\u0165a\u017eenie, vzdialenos\u0165 vzduchovej medzery<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Magnetick\u00e1 fluxov\u00e1 hustota<\/strong><\/td>\n<td style=\"text-align: left;\">Pohonov\u00e1 \u00fa\u010dinnos\u0165<\/td>\n<td style=\"text-align: left;\">Cie\u013eov\u00e9 hladiny Gauss\/Tesla, satur\u00e1cia obvodu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Integr\u00e1cia kovov do vlastn\u00fdch zost\u00e1v<\/h3>\n<p>Optimalizujeme \u00fa\u010dinnos\u0165 obvodu integr\u00e1ciou v\u00fdkonn\u00fdch magnetov do vlastn\u00fdch oce\u013eov\u00fdch zadn\u00fdch dielov, ochrann\u00e9ho gumov\u00e9ho materi\u00e1lu, tvoren\u00fdch plastov alebo presn\u00fdch kovov\u00fdch krytov. Zmie\u0161an\u00edm m\u00e4kk\u00fdch magnetick\u00fdch oce\u013eov\u00fdch panelov s trval\u00fdmi magnetmi nasmerujeme fluxov\u00e9 cesty na koncentrovanie sily dr\u017eania presne tam, kde ju potrebujete.<\/p>\n<p>Pre \u0161pecializovan\u00e9 smerov\u00e9 magnetick\u00e9 polia spolupracujeme s <a href=\"https:\/\/nbaem.com\/sk\/custom-halbach-array-permanent-magnet-manufacturer\/\">vlastn\u00fdm v\u00fdrobcom trval\u00fdch magnetov Halbach po\u013ea<\/a> na zameranie magnetick\u00e9ho toku na jednu pracovn\u00fa stranu pri s\u00fa\u010dasnom zn\u00ed\u017een\u00ed ne\u017eiaducich pol\u00ed na opa\u010dn\u00fa stranu na takmer nulu.<\/p>\n<h3>V\u00fdrobn\u00e1 norma a kontrola kvality<\/h3>\n<p>Na\u0161e v\u00fdrobn\u00e9 procesy udr\u017eiavaj\u00fa pr\u00edsnu priemyseln\u00fa s\u00faladnos\u0165, aby sa zaru\u010dila opakovate\u013enos\u0165 d\u00e1vky a presn\u00e9 tolerancie rozmerov:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>ISO 9001 a ISO 14001:<\/strong> \u0160tandardizovan\u00e9 riadenie kvality a environment\u00e1lna zodpovednos\u0165.<\/li>\n<li><strong>Syst\u00e9my ISO\/TS16949:<\/strong> Pr\u00edsne v\u00fdrobn\u00e9 protokoly na automobilov\u00fd stupe\u0148.<\/li>\n<li><strong>Overenie \u00farovne PPAP Level 3:<\/strong> Dokument\u00e1cia kompletn\u00e9ho procesu schv\u00e1lenia v\u00fdrobn\u00fdch \u010dast\u00ed, vr\u00e1tane \u00fapln\u00fdch spr\u00e1v o rozmerovej kontrole a certifik\u00e1tov o materi\u00e1lov\u00fdch sk\u00fa\u0161kach.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>N\u00e1vrh dod\u00e1vate\u013esk\u00e9ho a prototypovacieho procesu<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Vlastn\u00e9 \u0161pecifik\u00e1cie materi\u00e1lov:<\/strong> Prisp\u00f4sobenie tried zliatin pod\u013ea teplotn\u00fdch, mechanick\u00fdch a kovov\u00fdch po\u017eiadaviek.<\/li>\n<li><strong>Modelovanie CAD a simul\u00e1cia FEA:<\/strong> Simul\u00e1cia ciest hustoty toku na zabr\u00e1nenie odch\u00fdlok a optimaliz\u00e1ciu v\u00fdkonnosti.<\/li>\n<li><strong>Hodnotenie prototypu:<\/strong> R\u00fdchla v\u00fdroba vzoriek, mechanick\u00e9 overenie a Gaussove testy.<\/li>\n<li><strong>\u0160tandardizovan\u00e9 v\u00fdrobn\u00e9 kapacity:<\/strong> Zjednodu\u0161en\u00e9 n\u00e1stroje a v\u00fdrobn\u00e9 harmonogramy na zabezpe\u010denie kr\u00e1tkych dodac\u00edch leh\u00f4t.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>M\u00f4\u017eu nekovov\u00e9 kovov\u00e9 materi\u00e1ly sta\u0165 sa magnetick\u00fdmi za ur\u010dit\u00fdch podmienok?<\/h3>\n<p>\u00c1no. Nekovov\u00e9 Austenitick\u00e9 ocele s n\u00edzkou magnetickou silou (serie 300) sa stan\u00fa mierne feromagnetick\u00fdmi, ke\u010f s\u00fa podroben\u00e9 studen\u00e9mu opracovaniu, siln\u00e9mu oh\u00fdbaniu alebo obr\u00e1baniu. Mechanick\u00e9 nap\u00e4tie men\u00ed jej kry\u0161t\u00e1lov\u00fa mrie\u017eku s centr\u00e1lnym usporiadan\u00edm na feromagnetick\u00fa martenzitick\u00fa \u0161trukt\u00faru. Okrem toho aj paramagnetick\u00e9 kovy ako hlin\u00edk vykazuj\u00fa do\u010dasn\u00e9 magnetick\u00e9 pri\u0165ahovanie pri vystaven\u00ed extr\u00e9mnym, vysokon\u00e1bojov\u00fdm magnetick\u00fdm poliam alebo kryog\u00e9nnym teplot\u00e1m.<\/p>\n<h3>Ako zmena teploty ovplyv\u0148uje magnetick\u00e9 vlastnosti magnetick\u00e9ho kovu?<\/h3>\n<p>Termick\u00e1 energia nar\u00fa\u0161a usporiadanie magnetick\u00fdch dom\u00e9n. S rast\u00facou prev\u00e1dzkovou teplotou kles\u00e1 hustota toku a remanencia. Ke\u010f materi\u00e1l dosiahne svoje \u0161pecifick\u00e9 <strong>Teplota Curie<\/strong>, feromagnetizmus \u00faplne kolabuje, \u010do sp\u00f4sobuje, \u017ee kov sa stane paramagnetick\u00fdm:<br \/>\n<strong>\u010cisto \u017eelezo (Fe):<\/strong> 770\u00b0C<br \/>\n<strong>Kobalt (Co):<\/strong> 1121\u00b0C<br \/>\n<strong>Neodymov\u00e9 magnety (NdFeB):<\/strong> 310\u00b0C a\u017e 400\u00b0C (v z\u00e1vislosti od prid\u00e1van\u00fdch droga\/dysprosium\/terbiov\u00e9 triedy)<\/p>\n<h3>Ak\u00fd je rozdiel medzi tvrd\u00fdmi a m\u00e4kk\u00fdmi magnetick\u00fdmi materi\u00e1lmi v motorov\u00fdch jadrov\u00fdch \u0161trukt\u00farach?<\/h3>\n<p>Klasifikujeme magnetick\u00e9 materi\u00e1ly na tvrd\u00e9 a m\u00e4kk\u00e9 kateg\u00f3rie na z\u00e1klade ich koercivity a schopnosti uchova\u0165 magnetick\u00e9 energie.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Charakteristika<\/th>\n<th style=\"text-align: left;\">M\u00e4kk\u00e9 magnetick\u00e9 materi\u00e1ly<\/th>\n<th style=\"text-align: left;\">Tvrd\u00e9 magnetick\u00e9 materi\u00e1ly<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>Prim\u00e1rna funkcia<\/strong><\/td>\n<td style=\"text-align: left;\">Riadi a zosil\u0148uje magnetick\u00fd tok s minim\u00e1lnymi stratami energie<\/td>\n<td style=\"text-align: left;\">Vytv\u00e1ra kontinu\u00e1lne, trvalo magnetick\u00e9 pole<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Koercivita<\/strong><\/td>\n<td style=\"text-align: left;\">N\u00edzka ( magnetizuje a demagnetizuje r\u00fdchlo )<\/td>\n<td style=\"text-align: left;\">Vysok\u00e1 (silno odol\u00e1va demagnetiz\u00e1cii)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Be\u017en\u00e9 zliatiny<\/strong><\/td>\n<td style=\"text-align: left;\">Silik\u00f3nov\u00e1 oce\u013e, m\u00e4kk\u00e9 \u017eelezo, jadr\u00e1 ferritu<\/td>\n<td style=\"text-align: left;\">Neod\u00fdm (NdFeB), Samarium- -Kobalt, AlNiCo<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Prim\u00e1rne pou\u017eitia<\/strong><\/td>\n<td style=\"text-align: left;\">Jadro lam\u00ednov elektromotorov, transform\u00e1tory, <a href=\"https:\/\/nbaem.com\/sk\/what-is-mining-magnetic-coupling-and-how-it-works\/\">\u0165a\u017en\u00e9 magnetick\u00e9 spojky<\/a> pohony<\/td>\n<td style=\"text-align: left;\">Permanentn\u00e9 magnetick\u00e9 rotory, magnetick\u00e9 separ\u00e1tory, senzory<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Ako otestova\u0165, \u010di je nezn\u00e1ma kovov\u00e1 zliatina magnetick\u00e1 bez \u0161peci\u00e1lnych n\u00e1strojov?<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Test magnetu z vz\u00e1cnych zem\u00edn:<\/strong> Dotknite sa siln\u00fdm magnetom Neod\u00fdm k vzorku kovu. Okam\u017eit\u00fd, pevn\u00fd \u0165ah nazna\u010duje feromagnetick\u00e9 kovy (karbonov\u00e1 oce\u013e, 400-series nerez). Slab\u00fd \u0165ah odhal\u00ed chladen\u00fa pracovn\u00fa nerez 304 alebo 316.<\/li>\n<li><strong>Test tren\u00edm eddy pr\u00fadu:<\/strong> Uhol nezn\u00e1mej nemagnetickej kovovej platne na 45 stup\u0148ov a posu\u0148te magnet po jej povrchu. Vysoko vodiv\u00e9 nemagnetick\u00e9 kovy ( me\u010f, hlin\u00edk ) vytv\u00e1raj\u00fa protichodn\u00e9 v\u00edrov\u00e9 pr\u00fady, ktor\u00e9 sp\u00f4sobuj\u00fa, \u017ee magnet kles\u00e1 pomaly.<\/li>\n<li><strong>Test iskier z br\u00fasky:<\/strong> So silno \u013eahko prilo\u017ete kov k abraz\u00edvnemu kolu. \u017delezom zalo\u017een\u00e9 magnetick\u00e9 kovy produkuj\u00fa \u0165a\u017ek\u00e9, pr\u00fadiace \u017elt\u00e9 iskry, zatia\u013e \u010do nemagnetick\u00e9 kovy ako hlin\u00edk, me\u010f a titan neprodukuj\u00fa iskry.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div id=\"references\">\n<h2>S\u00favisiace zdroje<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.magnet4sale.com\/what-is-the-strongest-permanent-magnet-comparison-of-neodymium-ceramic-smco-and-alnico-magnets\/\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.magnet4sale.com\/what-is-the-strongest-permanent-magnet-comparison-of-neodymium-ceramic-smco-and-alnico-magnets\/<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Ktor\u00e9 kovov\u00e9 materi\u00e1ly s\u00fa magnetick\u00e9? Nau\u010d sa \u017eelezo, nikl, kobalt, oce\u013e a neparametrick\u00e9 kovov\u00e9 materi\u00e1ly v jasnom a r\u00fdchlom sprievodcovi.<\/p>","protected":false},"author":1,"featured_media":3978,"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-3979","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2026\/08\/Ferromagnetic_metals_diagram_ZS1.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/posts\/3979","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/comments?post=3979"}],"version-history":[{"count":2,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/posts\/3979\/revisions"}],"predecessor-version":[{"id":3994,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/posts\/3979\/revisions\/3994"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/media\/3978"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/media?parent=3979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/categories?post=3979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/sk\/wp-json\/wp\/v2\/tags?post=3979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}