{"id":18120,"date":"2026-02-13T14:13:36","date_gmt":"2026-02-13T06:13:36","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=18120"},"modified":"2026-10-08T21:07:01","modified_gmt":"2026-10-08T13:07:01","slug":"tool-steel-for-die-casting-mold-die-steel-properties-and-selection","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/sk\/blog\/tool-steel-for-die-casting-mold-die-steel-properties-and-selection\/","title":{"rendered":"N\u00e1strojov\u00e1 oce\u013e pre tlakov\u00e9 formy: vlastnosti a v\u00fdber"},"content":{"rendered":"

N\u00e1strojov\u00e9 ocele na formy s\u00fa z\u00e1kladom modernej v\u00fdroby foriem na tlakov\u00e9 liatie<\/a><\/span>. Od be\u017en\u00fdch n\u00e1strojov\u00fdch ocel\u00ed sa l\u00ed\u0161ia vyv\u00e1\u017eenou kombin\u00e1ciou tvrdosti, h\u00fa\u017eevnatosti a tepelnej odolnosti.<\/p>\n

Tento \u010dl\u00e1nok v\u00e1m pom\u00f4\u017ee pochopi\u0165 vlastnosti a v\u00fdber ocel\u00ed na tlakov\u00e9 formy, lep\u0161ie porozumie\u0165 v\u00fdrobn\u00e9mu procesu v\u00e1\u0161ho dod\u00e1vate\u013ea a efekt\u00edvnej\u0161ie komunikova\u0165 po\u010das n\u00e1vrhu a v\u00fdroby.<\/p>\n

\"Kvalitn\u00e9<\/p>\n

Ocele na pr\u00e1cu za tepla pre tlakov\u00e9 liatie<\/h2>\n

N\u00e1strojov\u00e1 oce\u013e na tlakov\u00e9 formy je druh n\u00e1strojovej ocele ur\u010den\u00fd na formy a n\u00e1stroje, ktor\u00e9 si musia zachova\u0165 tvar pri vysokom za\u0165a\u017een\u00ed, tren\u00ed a teple. Rozde\u013euje sa na ocele na pr\u00e1cu za studena, za tepla a ocele na formy pre plasty. S tlakov\u00fdmi formami najviac s\u00favisia ocele na pr\u00e1cu za tepla<\/strong>.<\/p>\n

Tieto ocele odol\u00e1vaj\u00fa opakovan\u00e9mu p\u00f4sobeniu vysok\u00fdch tepl\u00f4t\u00a0a mechanick\u00e9mu nam\u00e1haniu. Pou\u017e\u00edvaj\u00fa sa na kovacie z\u00e1pustky, formy na tlakov\u00e9 liatie a n\u00e1stroje na pretl\u00e1\u010danie za tepla.<\/p>\n

Be\u017en\u00e9 ocele na pr\u00e1cu za tepla pre tlakov\u00e9 formy<\/h3>\n

Pri tlakovom liat\u00ed hlin\u00edka a zinku sa naj\u010dastej\u0161ie pou\u017e\u00edva oce\u013e H13, preto\u017ee pri zlo\u017eit\u00fdch form\u00e1ch a vlo\u017ek\u00e1ch pon\u00faka stabiln\u00fa kombin\u00e1ciu pevnosti za tepla, h\u00fa\u017eevnatosti a obrobite\u013enosti.<\/p>\n

Varianty a ekvivalentn\u00e9 triedy (napr\u00edklad 1.2344 alebo SKD61) poskytuj\u00fa podobn\u00fd v\u00fdkon pod\u013ea miestnych noriem a dostupnosti. Pri ve\u013emi n\u00e1ro\u010dn\u00fdch podmienkach alebo n\u00e1strojoch s dlhou \u017eivotnos\u0165ou sa \u010dasto volia pr\u00e9miov\u00e9 alebo modifikovan\u00e9 triedy H13 s vy\u0161\u0161ou \u010distotou a h\u00fa\u017eevnatos\u0165ou.<\/p>\n

Vlastnosti n\u00e1strojov\u00fdch ocel\u00ed a ich pr\u00ednos pri v\u00fdrobe foriem<\/h2>\n

Ocele na tlakov\u00e9 formy musia pracova\u0165 v extr\u00e9mnych podmienkach. Ich pr\u00ednos vych\u00e1dza z viacer\u00fdch vlastnost\u00ed d\u00f4le\u017eit\u00fdch v re\u00e1lnej v\u00fdrobe.<\/p>\n

Tvrdos\u0165 a odolnos\u0165 proti opotrebovaniu pri tlakovom liat\u00ed<\/h3>\n

Pri tlakov\u00fdch form\u00e1ch<\/a><\/span>, tvrdos\u0165<\/strong> je k\u013e\u00fa\u010dov\u00e1 na riadenie opotrebovania jednotliv\u00fdch \u010dast\u00ed a oblast\u00ed formy. Spr\u00e1vne tepelne spracovan\u00e9 ocele na pr\u00e1cu za tepla, napr\u00edklad H13, pri tlakovom liat\u00ed hlin\u00edka zvy\u010dajne dosahuj\u00fa pribli\u017ene 46\u201352 HRC; pri v\u00fdrobn\u00fdch n\u00e1strojoch sa naj\u010dastej\u0161ie pou\u017e\u00edva 48\u201350 HRC. To sta\u010d\u00ed na obmedzenie er\u00f3zie sp\u00f4sobenej r\u00fdchlo pr\u00fadiacim roztaven\u00fdm kovom.<\/p>\n

Vysok\u00e1 odolnos\u0165 proti opotrebovaniu<\/strong> pom\u00e1ha forme odol\u00e1va\u0165:<\/p>\n