[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.hamtam.cz\/jak-funguji-magnety-diky-magneticke-sile\/#Article","mainEntityOfPage":"https:\/\/www.hamtam.cz\/jak-funguji-magnety-diky-magneticke-sile\/","headline":"Jak funguj\u00ed magnety? D\u00edky magnetick\u00e9 s\u00edle","name":"Jak funguj\u00ed magnety? D\u00edky magnetick\u00e9 s\u00edle","description":"Obrovsk\u00e1 s\u00edla magnet\u016f m\u016f\u017ee p\u016fsobit tajemn\u011b. Kovov\u011b vypadaj\u00edc\u00ed kotou\u010d nebo t\u0159eba kv\u00e1dr na \u017eelezn\u00e9 trubce, ocelov\u00e9 konstrukci i plechu udr\u017e\u00ed p\u0159icvaknut\u00fd cel\u00fd stoh pap\u00edr\u016f. Jak je to mo\u017en\u00e9? Kde se s\u00edla magnet\u016f bere a z \u010deho jsou siln\u00e9 magnety vyroben\u00e9? \u010ct\u011bte d\u00e1l. Siln\u00e9 magnety jsou zaj\u00edmav\u00e9 v tom, \u017ee funguj\u00ed d\u00edky s\u00edle, kter\u00e1 nen\u00ed vid\u011bt, […]","datePublished":"2021-06-25","dateModified":"2024-03-17","author":{"@type":"Person","@id":"https:\/\/www.hamtam.cz\/author\/#Person","name":"","url":"https:\/\/www.hamtam.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/4c052e7a73c1efe5fd04a7144e27996a074b623217a764a72d90cb6a084de021?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4c052e7a73c1efe5fd04a7144e27996a074b623217a764a72d90cb6a084de021?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"hamtam.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.hamtam.cz\/wp-content\/uploads\/UMG2136-Jak-funguji-magnety-diky-magneticke-sile-uvodni_ucadlC.jpg","url":"https:\/\/www.hamtam.cz\/wp-content\/uploads\/UMG2136-Jak-funguji-magnety-diky-magneticke-sile-uvodni_ucadlC.jpg","height":0,"width":0},"url":"https:\/\/www.hamtam.cz\/jak-funguji-magnety-diky-magneticke-sile\/","about":["Produkty"],"wordCount":533,"articleBody":"          Obrovsk\u00e1 s\u00edla magnet\u016f m\u016f\u017ee p\u016fsobit tajemn\u011b. Kovov\u011b vypadaj\u00edc\u00ed kotou\u010d nebo t\u0159eba kv\u00e1dr na \u017eelezn\u00e9 trubce, ocelov\u00e9 konstrukci i plechu udr\u017e\u00ed p\u0159icvaknut\u00fd cel\u00fd stoh pap\u00edr\u016f. Jak je to mo\u017en\u00e9? Kde se s\u00edla magnet\u016f bere a z \u010deho jsou siln\u00e9 magnety vyroben\u00e9? \u010ct\u011bte d\u00e1l. Siln\u00e9 magnety jsou zaj\u00edmav\u00e9 v tom, \u017ee funguj\u00ed d\u00edky s\u00edle, kter\u00e1 nen\u00ed vid\u011bt, ani nijak poznat, dokud je nep\u0159ibl\u00ed\u017e\u00edte k feromagnetick\u00e9mu materi\u00e1lu, nap\u0159\u00edklad k \u017eelezu, oceli \u010di niklu, anebo k jin\u00e9mu magnetu. Do t\u00e9 doby vypadaj\u00ed jen jako kousky kovu.  Jak to, \u017ee magnety vypadaj\u00ed jako kovov\u00e9? V minulosti byly hojn\u011b vyu\u017e\u00edvan\u00e9 takzvan\u00e9 feritov\u00e9 magnety. Ty jsou v\u0161ak slab\u00e9. V dne\u0161n\u00ed dob\u011b se mezi nejpou\u017e\u00edvan\u011bj\u0161\u00ed magnety \u0159ad\u00ed neodymov\u00e9 magnety. Jsou vyroben\u00e9 ze slitiny \u017eeleza, boru a neodymu a z v\u00fdroby maj\u00ed \u0161edo\u010dernou barvu. V\u00fdrobci skoro v\u017edy magnety opat\u0159uj\u00ed ochrannou vrstvou \u2013 poniklov\u00e1n\u00edm, pozinkov\u00e1n\u00edm, p\u0159\u00edpadn\u011b pogumov\u00e1n\u00edm nebo t\u0159eba zapouzd\u0159en\u00edm do plastu. D\u00edky tomu magnety v\u00edce vydr\u017e\u00ed. Jeliko\u017e obsahuj\u00ed \u017eelezo, bez ochrann\u00e9 vrstvy by mohly korodovat. I tak jsou ale neodymov\u00e9 magnety ur\u010den\u00e9 hlavn\u011b do interi\u00e9ru. Pokud pot\u0159ebujete siln\u00e9 magnety pou\u017e\u00edt venku, m\u016f\u017eete pou\u017e\u00edt poplastovan\u00e9 nebo pogumovan\u00e9 magnety. Kde se v magnetech bere magnetick\u00e1 s\u00edla? Aby byl magnet magnetem, mus\u00ed se nejd\u0159\u00edv magnetizovat. To se d\u011bje na pr\u016fmyslov\u00fdch magnetiz\u00e1torech b\u011bhem v\u00fdroby magnetu, po nanesen\u00ed ochrann\u00e9 vrstvy. Neodymov\u00e9 magnety (NdFeB) umo\u017e\u0148uj\u00ed velkou m\u00edru magnetizace. D\u00edky tomu pak maj\u00ed velkou magnetickou s\u00edlu a udr\u017e\u00ed i mnohon\u00e1sobek sv\u00e9 hmotnosti. B\u0159emenov\u00e9 magnety, ur\u010den\u00e9 do d\u00edlen a v\u00fdroben, unesou i n\u011bkolikatunov\u00e1 b\u0159emena. Magnetizace je trval\u00e1. Siln\u00fd neodymov\u00fd magnet funguje bez elekt\u0159iny. Proto se tyto magnety ozna\u010duj\u00ed jako permanentn\u00ed.  Kotou\u010de, kv\u00e1dry, krychle, kruhy, ty\u010de i jin\u00e9 tvary magnet\u016f Siln\u00e9 neodymov\u00e9 magnety mohou m\u00edt r\u016fzn\u00fd tvar. Pro v\u0161elijak\u00e9 \u00fa\u010dely si m\u016f\u017eete po\u0159\u00eddit neodymy ve tvaru kv\u00e1dru, kostky, koule, magnetick\u00e9 ty\u010de, kruhy a dal\u0161\u00ed podoby. K \u010demu se mohou hodit? Na blogu Magnetik.cz najdete mnoho n\u00e1vod\u016f, jak siln\u00fd magnet vyu\u017e\u00edt. Uv\u00e1d\u00edme p\u00e1r p\u0159\u00edklad\u016f: Magnetick\u00e9 kuli\u010dky jsou sou\u010d\u00e1st\u00ed stavebnice NeoCube, kostkov\u00fd magnet se hod\u00ed pro p\u0159ipnut\u00ed ubrusu ke stolu, magnetick\u00e9 ty\u010dky a v\u00e1le\u010dky vyu\u017eijete t\u0159eba jako magnetky na lednici k p\u0159ipevn\u011bn\u00ed pozn\u00e1mek, recept\u016f na ledni\u010dku \u010di magnetickou tabuli, kv\u00e1drov\u00e9 nebo kotou\u010dov\u00e9 magnety jsou vhodn\u00e9 pro magnetick\u00e9 zav\u00edr\u00e1n\u00ed sk\u0159\u00edn\u011bk, d\u00e1rkov\u00fdch kazet, k p\u0159ipevn\u011bn\u00ed s\u00edt\u00ed proti hmyzu do oken, existuj\u00ed i magnety zapouzd\u0159en\u00e9 v ocelov\u00e9m pouzd\u0159e, magnetick\u00e9 h\u00e1\u010dky. Krom\u011b zm\u00edn\u011bn\u00fdch magnet\u016f jsou k dispozici tak\u00e9 magnetick\u00e9 f\u00f3lie, r\u00e1me\u010dky, r\u016fzn\u00e9 magnetick\u00e9 dr\u017e\u00e1ky a \u00fachyty, teleskopick\u00e9 vysunovac\u00ed magnety, kancel\u00e1\u0159sk\u00e9 magnety nebo super siln\u00e9 magnety pro lovce poklad\u016f z vodn\u00edch hlubin. V\u0161echny typy magnet\u016f se\u017eenete na webu Unimagnet.cz                                                                                                                                                                                                                                                                                                                                                                                          3.7\/5 - (10 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak funguj\u00ed magnety? 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