{"id":23752,"date":"2026-02-13T14:13:36","date_gmt":"2026-02-13T06:13:36","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=23752"},"modified":"2026-10-09T02:23:20","modified_gmt":"2026-10-08T18:23:20","slug":"tool-steel-for-die-casting-mold-die-steel-properties-and-selection","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/cs\/blog\/tool-steel-for-die-casting-mold-die-steel-properties-and-selection\/","title":{"rendered":"N\u00e1strojov\u00e1 ocel pro formy na tlakov\u00e9 lit\u00ed: Vlastnosti a v\u00fdb\u011br ocel\u00ed pro formy"},"content":{"rendered":"<p>N\u00e1strojov\u00e9 oceli pro formy tvo\u0159\u00ed z\u00e1klad modern\u00ed <span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/cs\/die-casting-dies\/\">v\u00fdroby forem pro tlakov\u00e9 lit\u00ed<\/a><\/span>. Tyto materi\u00e1ly se odli\u0161uj\u00ed od b\u011b\u017en\u00fdch n\u00e1strojov\u00fdch ocel\u00ed t\u00edm, \u017ee vyva\u017euj\u00ed tvrdost, hou\u017eevnatost a tepelnou odolnost.<\/p>\n<p>Tento blog slou\u017e\u00ed jako pr\u016fvodce, kter\u00fd v\u00e1m pom\u016f\u017ee sezn\u00e1mit se s vlastnostmi a v\u00fdb\u011brem ocel\u00ed pro v\u00fdrobu forem. D\u00edky tomu l\u00e9pe porozum\u00edte v\u00fdrobn\u00edmu procesu sv\u00e9ho dodavatele tlakov\u00e9ho lit\u00ed a budete moci efektivn\u011b komunikovat ve f\u00e1z\u00edch n\u00e1vrhu a v\u00fdroby.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1732\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/steel-cube-used-for-die-making.jpg\" alt=\"Vysoce kvalitn\u00ed bloky n\u00e1strojov\u00e9 oceli pou\u017e\u00edvan\u00e9 p\u0159i v\u00fdrob\u011b forem pro tlakov\u00e9 lit\u00ed; vyzna\u010duj\u00ed se odolnost\u00ed a p\u0159esnost\u00ed pot\u0159ebnou pro optim\u00e1ln\u00ed vlastnosti oceli formy.\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/steel-cube-used-for-die-making.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/steel-cube-used-for-die-making-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/steel-cube-used-for-die-making-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/steel-cube-used-for-die-making-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Oceli pro pr\u00e1ci za tepla ur\u010den\u00e9 pro formy na tlakov\u00e9 lit\u00ed<\/h2>\n<p>Jednodu\u0161e \u0159e\u010deno, ocel pro v\u00fdrobu forem je druh n\u00e1strojov\u00e9 oceli ur\u010den\u00fd pro z\u00e1pustky a formy, kter\u00e9 si mus\u00ed zachovat sv\u016fj tvar i p\u0159i p\u016fsoben\u00ed velk\u00fdch sil, t\u0159en\u00ed a vysok\u00fdch teplot. Lze je rozd\u011blit na oceli pro pr\u00e1ci za studena, pro pr\u00e1ci za tepla a oceli pro formy na plasty. Mezi n\u011b pat\u0159\u00ed <strong>oceli pro pr\u00e1ci za tepla<\/strong> kter\u00e9 \u00fazce souvisej\u00ed s formami pro tlakov\u00e9 lit\u00ed.<\/p>\n<p>Oceli pro pr\u00e1ci za tepla odol\u00e1vaj\u00ed opakovan\u00e9mu p\u016fsoben\u00ed vysok\u00fdch teplot a mechanick\u00e9mu nam\u00e1h\u00e1n\u00ed. Pou\u017e\u00edvaj\u00ed se na z\u00e1pustky pro kov\u00e1n\u00ed, formy pro tlakov\u00e9 lit\u00ed a n\u00e1stroje pro protla\u010dov\u00e1n\u00ed za tepla.<\/p>\n<h3>B\u011b\u017en\u00e9 oceli pro pr\u00e1ci za tepla pou\u017e\u00edvan\u00e9 u forem pro tlakov\u00e9 lit\u00ed<\/h3>\n<p>P\u0159i tlakov\u00e9m lit\u00ed hlin\u00edku a zinku je nejpou\u017e\u00edvan\u011bj\u0161\u00ed ocel\u00ed pro pr\u00e1ci za tepla typ H13, proto\u017ee nab\u00edz\u00ed vyv\u00e1\u017eenou kombinaci pevnosti za tepla, hou\u017eevnatosti a obrobitelnosti, co\u017e je ide\u00e1ln\u00ed pro slo\u017eit\u00e9 formy a vlo\u017eky.<\/p>\n<p>Varianty a ekvivalentn\u00ed jakosti (nap\u0159\u00edklad 1.2344 nebo SKD61) poskytuj\u00ed podobn\u00e9 vlastnosti v z\u00e1vislosti na m\u00edstn\u00edch norm\u00e1ch a dostupnosti na trhu. Pro velmi n\u00e1ro\u010dn\u00e9 podm\u00ednky nebo n\u00e1stroje s dlouhou \u017eivotnost\u00ed se \u010dasto vol\u00ed pr\u00e9miov\u00e9 \u010di modifikovan\u00e9 jakosti oceli H13 se zv\u00fd\u0161enou \u010distotou a hou\u017eevnatost\u00ed.<\/p>\n<h2>Vlastnosti ocel\u00ed pro v\u00fdrobu forem a jejich p\u0159\u00ednos pro v\u00fdrobu forem<\/h2>\n<p>Oceli ur\u010den\u00e9 pro formy na tlakov\u00e9 lit\u00ed mus\u00ed fungovat v extr\u00e9mn\u00edch podm\u00ednk\u00e1ch. Jejich hodnota spo\u010d\u00edv\u00e1 v \u0161irok\u00e9 \u0161k\u00e1le vlastnost\u00ed, kter\u00e9 jsou u\u017eite\u010dn\u00e9 v re\u00e1ln\u00e9m v\u00fdrobn\u00edm procesu.<\/p>\n<h3>Tvrdost a odolnost proti opot\u0159eben\u00ed p\u0159i tlakov\u00e9m lit\u00ed<\/h3>\n<p>Pro <span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/cs\/product-category\/die-casting-mold\/\">formy na tlakov\u00e9 lit\u00ed<\/a><\/span>,\u00a0<strong>tvrdost<\/strong> je kl\u00ed\u010dov\u00e1 pro omezen\u00ed opot\u0159eben\u00ed sou\u010d\u00e1st\u00ed a r\u016fzn\u00fdch \u010d\u00e1st\u00ed formy. Spr\u00e1vn\u011b tepeln\u011b zpracovan\u00e9 oceli pro pr\u00e1ci za tepla, jako je H13, dosahuj\u00ed p\u0159i tlakov\u00e9m lit\u00ed hlin\u00edku obvykle tvrdosti kolem 46\u201352 HRC, p\u0159i\u010dem\u017e u v\u00fdrobn\u00edch n\u00e1stroj\u016f je nej\u010dast\u011bj\u0161\u00ed hodnota 48\u201350 HRC. Tato tvrdost je dostate\u010dn\u00e1 k omezen\u00ed eroze zp\u016fsoben\u00e9 rychle proud\u00edc\u00edm roztaven\u00fdm kovem b\u011bhem v\u00fdroby.<\/p>\n<p>Vysok\u00e1 <strong>odolnost proti opot\u0159eben\u00ed<\/strong> pom\u00e1h\u00e1 form\u011b odol\u00e1vat:<\/p>\n<ul>\n<li>Erozi v m\u00edstech s vysokou rychlost\u00ed proud\u011bn\u00ed kovu (vtoky, rozv\u00e1d\u011bc\u00ed kan\u00e1ly, p\u0159elivn\u00e9 kapsy)<\/li>\n<li>Roztaven\u00e9mu hlin\u00edku nebo zinku, kter\u00e9 maj\u00ed tendenci ulp\u00edvat na povrchu formy<\/li>\n<li>Opakovan\u00e9mu zav\u00edr\u00e1n\u00ed a up\u00edn\u00e1n\u00ed formy p\u0159i vyhazov\u00e1n\u00ed hotov\u00fdch d\u00edl\u016f<\/li>\n<\/ul>\n<p>Karbidov\u00e9 vrstvy tvo\u0159en\u00e9 uhl\u00edkem, chromem a vanadem zpomaluj\u00ed \u00fabytek materi\u00e1lu na hork\u00e9m povrchu formy. Hladk\u00fd, dob\u0159e vyle\u0161t\u011bn\u00fd povrch a vhodn\u00e1 povrchov\u00e1 \u00faprava d\u00e1le sni\u017euj\u00ed t\u0159en\u00ed a ulp\u00edv\u00e1n\u00ed kovu (tzv. nava\u0159ov\u00e1n\u00ed), \u010d\u00edm\u017e prodlu\u017euj\u00ed \u017eivotnost formy a zaji\u0161\u0165uj\u00ed st\u00e1lost rozm\u011br\u016f odlitk\u016f.<\/p>\n<h3>Hou\u017eevnatost a r\u00e1zov\u00e1 odolnost p\u0159i zat\u00ed\u017een\u00ed b\u011bhem vst\u0159ikov\u00e1n\u00ed<\/h3>\n<p><strong>Hou\u017eevnatost<\/strong> je u aplikac\u00ed tlakov\u00e9ho lit\u00ed stejn\u011b d\u016fle\u017eit\u00e1 jako tvrdost. Hlavn\u00ed rozd\u00edl oproti tvrdosti spo\u010d\u00edv\u00e1 v tom, \u017ee tvrdost ozna\u010duje odolnost v\u016f\u010di povrchov\u00e9mu opot\u0159eben\u00ed a vnik\u00e1n\u00ed ciz\u00edch t\u011bles, zat\u00edmco hou\u017eevnatost znamen\u00e1 odolnost v\u016f\u010di prask\u00e1n\u00ed a zlomen\u00ed p\u0159i n\u00e1razu. Tato vlastnost je obzvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e1 u:<\/p>\n<ul>\n<li>tenk\u00fdch sou\u010d\u00e1st\u00ed formy a oblast\u00ed vystaven\u00fdch vysok\u00e9mu vst\u0159ikovac\u00edmu tlaku<\/li>\n<li>oblast\u00ed vystaven\u00fdch opakovan\u00e9mu mechanick\u00e9mu nam\u00e1h\u00e1n\u00ed a n\u00e1raz\u016fm (v bl\u00edzkosti vyhazova\u010d\u016f a d\u011blic\u00edch rovin)<\/li>\n<\/ul>\n<p>Vysok\u00e1 <strong>r\u00e1zov\u00e1 hou\u017eevnatost<\/strong> sni\u017euje riziko n\u00e1hl\u00e9ho lomu v p\u0159\u00edpad\u011b nesouososti formy, prudk\u00e9ho n\u00e1r\u016fstu tlaku kovu nebo tepeln\u00e9ho \u0161oku zp\u016fsoben\u00e9ho nerovnom\u011brn\u00fdm zah\u0159\u00edv\u00e1n\u00edm a ochlazov\u00e1n\u00edm.<\/p>\n<h3>Odolnost proti korozi<\/h3>\n<p>A\u010dkoli formy pro tlakov\u00e9 lit\u00ed nevy\u017eaduj\u00ed takovou odolnost proti korozi jako nerezov\u00e1 ocel, ur\u010dit\u00e1 m\u00edra <strong>odolnosti proti korozi<\/strong> je p\u0159\u00ednosn\u00e1 pro ka\u017edodenn\u00ed provoz a \u00fadr\u017ebu. Obsah chr\u00f3mu v ocel\u00edch pro pr\u00e1ci za tepla pom\u00e1h\u00e1 zpomalovat tvorbu rzi mezi jednotliv\u00fdmi v\u00fdrobn\u00edmi cykly, p\u0159i skladov\u00e1n\u00ed nebo v prost\u0159ed\u00ed s p\u0159\u00edtomnost\u00ed chladic\u00ed vody a vysokou vlhkost\u00ed.<\/p>\n<p>Koroze se nejprve projevuje jako d\u016flkov\u00e1 koroze nebo skvrny na povr\u0161\u00edch dutin, posuvn\u00fdch prvc\u00edch a j\u00e1drech. Tyto vady se mohou p\u0159en\u00e9st na odlitky, co\u017e zt\u011b\u017euje jejich vyj\u00edm\u00e1n\u00ed z formy a prodlu\u017euje dobu \u010di\u0161t\u011bn\u00ed. Krom\u011b v\u00fdb\u011bru vhodn\u00e9 n\u00e1strojov\u00e9 oceli je proto nezbytn\u00e9 zajistit tak\u00e9 spr\u00e1vn\u00e9 \u010di\u0161t\u011bn\u00ed, pou\u017e\u00edvat antikorozn\u00ed oleje a dodr\u017eovat z\u00e1sady skladov\u00e1n\u00ed, co\u017e pom\u00e1h\u00e1 udr\u017eet kvalitu povrchu a omezit nepl\u00e1novan\u00e9 odst\u00e1vky kv\u016fli \u00fadr\u017eb\u011b.<\/p>\n<h3>Rozm\u011brov\u00e1 a tepeln\u00e1 stabilita<\/h3>\n<p><strong>Rozm\u011brov\u00e1 stabilita<\/strong> je kl\u00ed\u010dov\u00e1 pro dodr\u017een\u00ed p\u0159\u00edsn\u00fdch toleranc\u00ed u forem pro tlakov\u00e9 lit\u00ed. Oceli pou\u017e\u00edvan\u00e9 pro v\u00fdrobu forem si mus\u00ed zachovat sv\u016fj tvar po tepeln\u00e9m zpracov\u00e1n\u00ed i po celou dobu sv\u00e9 \u017eivotnosti.<\/p>\n<p>Mezi kl\u00ed\u010dov\u00e9 aspekty stability u n\u00e1stroj\u016f pro tlakov\u00e9 lit\u00ed pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>N\u00edzk\u00e1 deformace p\u0159i tepeln\u00e9m zpracov\u00e1n\u00ed<\/strong>, d\u00edky \u010demu\u017e z\u016fst\u00e1vaj\u00ed rozm\u011bry dutiny v mez\u00edch p\u0159\u00eddavk\u016f na obr\u00e1b\u011bn\u00ed<\/li>\n<li><strong>Dobr\u00e1 odolnost proti popou\u0161t\u011bn\u00ed<\/strong>, co\u017e zaji\u0161\u0165uje st\u00e1lost tvrdosti a pevnosti p\u0159i provozn\u00edch teplot\u00e1ch n\u00e1stroje<\/li>\n<li><strong>Odolnost proti tepeln\u00e9 \u00fanav\u011b<\/strong>, omezuj\u00edc\u00ed vznik tepeln\u00fdch trhlin a prask\u00e1n\u00ed povrchu b\u011bhem velk\u00e9ho po\u010dtu cykl\u016f lit\u00ed<\/li>\n<\/ul>\n<p>N\u00e1strojov\u00e9 oceli pro pr\u00e1ci za tepla s dobrou tepelnou stabilitou zabra\u0148uj\u00ed m\u011bknut\u00ed, deformac\u00edm a nadm\u011brn\u00e9mu zv\u011bt\u0161ov\u00e1n\u00ed objemu n\u00e1stroje vlivem opakovan\u00e9ho zah\u0159\u00edv\u00e1n\u00ed a ochlazov\u00e1n\u00ed. Tato stabilita pom\u00e1h\u00e1 udr\u017eet t\u011bsnost d\u011blic\u00edch rovin, zachov\u00e1v\u00e1 funk\u010dnost dosedac\u00edch ploch a zaji\u0161\u0165uje p\u0159esn\u00e9 vz\u00e1jemn\u00e9 ustaven\u00ed jader a vlo\u017eek, \u010d\u00edm\u017e p\u0159\u00edmo p\u0159isp\u00edv\u00e1 ke st\u00e1l\u00e9 p\u0159esnosti odlitk\u016f a prodlu\u017euje \u017eivotnost formy.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1731\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/a-steel-die-mounted-on-a-die-casting-machine.jpg\" alt=\"n\u00e1stroj z oceli pro pr\u00e1ci za tepla upevn\u011bn\u00fd v tlakov\u00e9m lic\u00edm stroji\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/a-steel-die-mounted-on-a-die-casting-machine.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/a-steel-die-mounted-on-a-die-casting-machine-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/a-steel-die-mounted-on-a-die-casting-machine-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2026\/02\/a-steel-die-mounted-on-a-die-casting-machine-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>Jak vlastnosti n\u00e1strojov\u00e9 oceli ovliv\u0148uj\u00ed formu pro tlakov\u00e9 lit\u00ed a v\u00fdrobu<\/h3>\n<p>Pokud se v\u00e1m v\u00fd\u0161e uveden\u00e9 technick\u00e9 podrobnosti zdaj\u00ed p\u0159\u00edli\u0161 slo\u017eit\u00e9, zde je p\u0159ehledn\u00e1 tabulka, kter\u00e1 vysv\u011btluje, jak tyto vlastnosti zvy\u0161uj\u00ed kvalitu v\u00fdrobk\u016f a efektivitu v\u00fdroby:<\/p>\n<table class=\"caption-bottom text-sm my-0 w-full table-auto\">\n<thead class=\"border-0 border-b [&amp;_tr]:border-0\" data-table-header-wrapper=\"true\">\n<tr class=\"data-[state=selected]:bg-muted hover:bg-muted\/50 border-b border-border transition-colors duration-200\" data-table-row=\"true\">\n<th class=\"h-10 text-left text-muted-foreground [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top font-semibold tracking-wide\" data-table-header=\"true\">\n<div class=\"hyphens-auto break-words\">Vlastnost<\/div>\n<\/th>\n<th class=\"h-10 text-left text-muted-foreground [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top font-semibold tracking-wide\" data-table-header=\"true\">\n<div class=\"hyphens-auto break-words\">Projev ve v\u00fdrob\u011b<\/div>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"[&amp;_tr:last-child]:border-0 divide-y divide-border bg-background\" data-table-body=\"true\">\n<tr class=\"data-[state=selected]:bg-muted hover:bg-muted\/50 border-b border-border transition-colors duration-200\" data-table-row=\"true\">\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Tvrdost \/ odolnost proti opot\u0159eben\u00ed<\/div>\n<\/td>\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Del\u0161\u00ed \u017eivotnost formy, stabiln\u011bj\u0161\u00ed rozm\u011bry, m\u00e9n\u011b zm\u011bn v kritick\u00fdch oblastech<\/div>\n<\/td>\n<\/tr>\n<tr class=\"data-[state=selected]:bg-muted hover:bg-muted\/50 border-b border-border transition-colors duration-200\" data-table-row=\"true\">\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Hou\u017eevnatost<\/div>\n<\/td>\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Men\u0161\u00ed riziko zlomen\u00ed jader, vylomen\u00ed hran \u010di n\u00e1hl\u00e9ho selh\u00e1n\u00ed formy<\/div>\n<\/td>\n<\/tr>\n<tr class=\"data-[state=selected]:bg-muted hover:bg-muted\/50 border-b border-border transition-colors duration-200\" data-table-row=\"true\">\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Tepeln\u00e1 stabilita<\/div>\n<\/td>\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">St\u00e1l\u00e9 rozm\u011bry d\u00edl\u016f, t\u011bsn\u00e9 d\u011blic\u00ed roviny a spolehliv\u00e9 dosedac\u00ed plochy<\/div>\n<\/td>\n<\/tr>\n<tr class=\"data-[state=selected]:bg-muted hover:bg-muted\/50 border-b border-border transition-colors duration-200\" data-table-row=\"true\">\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Odolnost proti korozi<\/div>\n<\/td>\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">\u010cist\u0161\u00ed dutiny formy, m\u00e9n\u011b povrchov\u00fdch vad, m\u00e9n\u011b \u010di\u0161t\u011bn\u00ed a prostoj\u016f<\/div>\n<\/td>\n<\/tr>\n<tr class=\"data-[state=selected]:bg-muted hover:bg-muted\/50 border-b border-border transition-colors duration-200\" data-table-row=\"true\">\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Odolnost proti tepeln\u00e9 \u00fanav\u011b<\/div>\n<\/td>\n<td class=\"p-2 [&amp;:has([role=checkbox])]:pr-0 [&amp;&gt;[role=checkbox]]:translate-y-[2px] px-4 py-3 align-top\" data-table-cell=\"true\">\n<div class=\"hyphens-auto break-words\">Dlouhodob\u011b hlad\u0161\u00ed povrchy, m\u00e9n\u011b oprav a svar\u016f na form\u011b<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"flex flex-col rounded-none bg-background\" data-table-wrapper=\"true\">\n<h2>Pora\u010fte se se sv\u00fdm dodavatelem forem pro tlakov\u00e9 lit\u00ed<\/h2>\n<p class=\"ds-markdown-paragraph\">Tento \u010dl\u00e1nek v\u00e1m poskytl stru\u010dn\u00fd \u00favod do problematiky n\u00e1strojov\u00fdch ocel\u00ed, av\u0161ak existuje mnoho dal\u0161\u00edch faktor\u016f, kter\u00e9 je t\u0159eba zohlednit; pro podrobn\u011bj\u0161\u00ed informace se proto obra\u0165te na v\u00fdrobce forem pro tlakov\u00e9 lit\u00ed. Doporu\u010dujeme, aby popt\u00e1vka obsahovala:<\/p>\n<ul>\n<li class=\"ds-markdown-paragraph\">Po\u017eadavek na konkr\u00e9tn\u00ed materi\u00e1ly<\/li>\n<li class=\"ds-markdown-paragraph\">Popis nebo v\u00fdkres v\u00fdrobku<\/li>\n<li class=\"ds-markdown-paragraph\">A dal\u0161\u00ed informace, kter\u00e9 v\u00fdrobci forem poskytnou jasnou p\u0159edstavu o va\u0161em z\u00e1m\u011bru<\/li>\n<\/ul>\n<p>Pokud si st\u00e1le nejste jisti, kde za\u010d\u00edt, nev\u00e1hejte <span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/cs\/contact-us\/\">odeslat svou popt\u00e1vku<\/a><\/span>a odborn\u00edci ze spole\u010dnosti Moldie v\u00e1m r\u00e1di pomohou.<\/p>\n<\/div>\n<h2>\u010casto kladen\u00e9 dotazy<\/h2>\n<h3>Co rozhoduje o v\u00fdb\u011bru nejvhodn\u011bj\u0161\u00edho typu n\u00e1strojov\u00e9 oceli pro konkr\u00e9tn\u00ed aplikaci?<\/h3>\n<p>Kl\u00ed\u010dovou roli hraje provozn\u00ed teplota. Procesy zpracov\u00e1n\u00ed za tepla, jako je tlakov\u00e9 lit\u00ed, vy\u017eaduj\u00ed ocel, kter\u00e1 si zachov\u00e1v\u00e1 pevnost i p\u0159i vysok\u00fdch teplot\u00e1ch, zat\u00edmco u proces\u016f zpracov\u00e1n\u00ed za studena je kladen d\u016fraz na odolnost proti opot\u0159eben\u00ed.<\/p>\n<p>V\u00fdznam m\u00e1 tak\u00e9 typ zat\u00ed\u017een\u00ed. P\u0159i pr\u00e1ci s vysok\u00fdmi r\u00e1zy jsou vhodn\u011bj\u0161\u00ed hou\u017eevnat\u011bj\u0161\u00ed oceli, zat\u00edmco u dlouh\u00fdch v\u00fdrobn\u00edch s\u00e9ri\u00ed se up\u0159ednost\u0148uj\u00ed jakosti s vysokou odolnost\u00ed proti opot\u0159eben\u00ed a st\u00e1lost\u00ed rozm\u011br\u016f.<\/p>\n<h3>Jak vlastnosti n\u00e1strojov\u00e9 oceli ovliv\u0148uj\u00ed jej\u00ed chov\u00e1n\u00ed p\u0159i pou\u017eit\u00ed jako materi\u00e1lu pro formy?<\/h3>\n<p>Odolnost proti opot\u0159eben\u00ed ur\u010duje, jak dlouho si forma udr\u017e\u00ed sv\u016fj tvar. Vysok\u00e1 odolnost proti opot\u0159eben\u00ed omezuje zaoblov\u00e1n\u00ed hran a po\u0161kozen\u00ed povrchu b\u011bhem opakovan\u00fdch cykl\u016f.<\/p>\n<p>Hou\u017eevnatost omezuje vznik trhlin a vylamov\u00e1n\u00ed materi\u00e1lu. Tepeln\u00e1 odolnost pom\u00e1h\u00e1 form\u011b udr\u017eet si tvrdost i p\u0159i vystaven\u00ed vysok\u00fdm pracovn\u00edm teplot\u00e1m.<\/p>\n<h3>Jak\u00fd vliv m\u00e1 tvrdost na \u017eivotnost forem pro tlakov\u00e9 lit\u00ed?<\/h3>\n<p>U tlakov\u00e9ho lit\u00ed vy\u0161\u0161\u00ed tvrdost obecn\u011b zvy\u0161uje odolnost proti erozi a opot\u0159eben\u00ed v m\u00edstech s vysok\u00fdm pr\u016ftokem taveniny, co\u017e prodlu\u017euje \u017eivotnost n\u00e1stroje. Pokud je v\u0161ak tvrdost p\u0159\u00edli\u0161 vysok\u00e1, kles\u00e1 hou\u017eevnatost a zvy\u0161uje se riziko vzniku trhlin v tenk\u00fdch nebo vysoce nam\u00e1han\u00fdch \u010d\u00e1stech formy. Volba vyv\u00e1\u017een\u00e9ho rozsahu tvrdosti ve spolupr\u00e1ci s dodavatelem forem pom\u00e1h\u00e1 dos\u00e1hnout dlouh\u00e9 \u017eivotnosti bez rizika k\u0159ehk\u00e9ho lomu.<\/p>\n<h3>Kter\u00e1 n\u00e1strojov\u00e1 ocel se nej\u010dast\u011bji pou\u017e\u00edv\u00e1 pro formy na tlakov\u00e9 lit\u00ed hlin\u00edku a zinku?<\/h3>\n<p>Ocel H13 a jej\u00ed ekvivalenty (nap\u0159. 1.2344 nebo SKD61) p\u0159edstavuj\u00ed nej\u010dast\u011bj\u0161\u00ed volbu pro formy na tlakov\u00e9 lit\u00ed hlin\u00edku a zinku, nebo\u0165 v sob\u011b spojuj\u00ed pevnost za tepla, hou\u017eevnatost a dobrou obrobitelnost. Pro obzvl\u00e1\u0161t\u011b n\u00e1ro\u010dn\u00e9 aplikace lze vyu\u017e\u00edt pr\u00e9miov\u00e9 varianty oceli H13 \u010di jin\u00e9 vylep\u0161en\u00e9 oceli pro pr\u00e1ci za tepla, kter\u00e9 l\u00e9pe odol\u00e1vaj\u00ed vzniku tepeln\u00fdch trhlin, erozi a prask\u00e1n\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>N\u00e1strojov\u00e9 oceli pro formy tvo\u0159\u00ed z\u00e1klad modern\u00ed v\u00fdroby forem pro tlakov\u00e9 lit\u00ed. Tyto materi\u00e1ly se odli\u0161uj\u00ed od b\u011b\u017en\u00fdch n\u00e1strojov\u00fdch ocel\u00ed t\u00edm, \u017ee vyva\u017euj\u00ed tvrdost, hou\u017eevnatost a tepelnou odolnost. Tento blog slou\u017e\u00ed jako pr\u016fvodce, kter\u00fd v\u00e1m pom\u016f\u017ee sezn\u00e1mit se s vlastnostmi a v\u00fdb\u011brem ocel\u00ed pro v\u00fdrobu forem. D\u00edky tomu l\u00e9pe porozum\u00edte v\u00fdrobn\u00edmu procesu sv\u00e9ho dodavatele tlakov\u00e9ho [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":24202,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"N\u00e1strojov\u00e1 ocel pro formy na tlakov\u00e9 lit\u00ed: Vlastnosti a v\u00fdb\u011br","_seopress_titles_desc":"Seznamte se s n\u00e1strojov\u00fdmi ocelemi pro konstrukci forem na tlakov\u00e9 lit\u00ed. Pochopte kl\u00ed\u010dov\u00e9 vlastnosti, jako je tvrdost a hou\u017eevnatost. Zjist\u011bte, jak vyb\u00edrat materi\u00e1l s ohledem na po\u017eadavky provozu za tepla.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"iawp_total_views":1,"footnotes":""},"categories":[219],"tags":[],"class_list":["post-23752","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/comments?post=23752"}],"version-history":[{"count":3,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23752\/revisions"}],"predecessor-version":[{"id":26400,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23752\/revisions\/26400"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/media\/24202"}],"wp:attachment":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/media?parent=23752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/categories?post=23752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/tags?post=23752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}