{"id":23846,"date":"2026-07-28T14:05:26","date_gmt":"2026-07-28T06:05:26","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=23846"},"modified":"2026-10-09T02:24:40","modified_gmt":"2026-10-08T18:24:40","slug":"core-pin-in-die-casting-mold-design-materials-and-performance","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/cs\/blog\/core-pin-in-die-casting-mold-design-materials-and-performance\/","title":{"rendered":"J\u00e1drov\u00fd \u010dep ve form\u011b pro tlakov\u00e9 lit\u00ed: konstrukce, materi\u00e1ly a v\u00fdkon"},"content":{"rendered":"

J\u00e1drov\u00e9 \u010depy jsou drobn\u00e9 sou\u010d\u00e1sti uvnit\u0159 n\u00e1stroje pro tlakov\u00e9 lit\u00ed. Vytv\u00e1\u0159ej\u00ed otvory, dr\u00e1\u017eky a vnit\u0159n\u00ed dutiny, kter\u00e9 ur\u010duj\u00ed funkci d\u00edlu; jejich geometrie, materi\u00e1l a um\u00edst\u011bn\u00ed ovliv\u0148uj\u00ed pr\u016fb\u011bh pln\u011bn\u00ed formy, spolehlivost vyhazov\u00e1n\u00ed,\u00a0rozm\u011brovou p\u0159esnost<\/a><\/span>a \u017eivotnost n\u00e1stroje v pr\u016fb\u011bhu ka\u017ed\u00e9 v\u00fdrobn\u00ed s\u00e9rie.<\/p>\n

Tento blog se zab\u00fdv\u00e1 souvislostmi mezi konstrukc\u00ed j\u00e1drov\u00e9ho \u010depu a v\u00fdb\u011brem slitiny, strategi\u00ed chlazen\u00ed, mo\u017en\u00fdmi zp\u016fsoby selh\u00e1n\u00ed a postupy kontroly. Poskytuje tak konstruk\u010dn\u00edm a v\u00fdrobn\u00edm t\u00fdm\u016fm praktickou pom\u016fcku pro rozhodov\u00e1n\u00ed o n\u00e1stroj\u00edch, kter\u00e9 obstoj\u00ed i p\u0159i velkos\u00e9riov\u00e9 v\u00fdrob\u011b.<\/p>\n

Funkce j\u00e1drov\u00fdch \u010dep\u016f v n\u00e1stroj\u00edch pro tlakov\u00e9 lit\u00ed<\/h2>\n

J\u00e1drov\u00e9 \u010depy formuj\u00ed vnit\u0159n\u00ed geometrii d\u00edlu, kterou nelze vytvo\u0159it pouze dutinou formy. U forem na hlin\u00edk a dal\u0161\u00edch n\u00e1stroj\u00edch pro tlakov\u00e9 lit\u00ed rozhoduje jejich um\u00edst\u011bn\u00ed, velikost a zp\u016fsob ukotven\u00ed o tom, zda budou v\u00fdsledn\u00e9 prvky \u010dist\u00e9 a konzistentn\u00ed, nebo zda se stanou opakovan\u00fdm zdrojem zmetkovitosti a prostoj\u016f.<\/p>\n

Jak \u010depy vytv\u00e1\u0159ej\u00ed vnit\u0159n\u00ed prvky<\/h3>\n

J\u00e1drov\u00fd \u010dep je samostatn\u00e1, vym\u011bniteln\u00e1 vlo\u017eka um\u00edst\u011bn\u00e1 uvnit\u0159 formy, kter\u00e1 p\u0159i vst\u0159ikov\u00e1n\u00ed vytla\u010duje roztaven\u00fd kov a vytv\u00e1\u0159\u00ed tak otvor, v\u00fdstupek, kan\u00e1lek nebo dutinu. Tento postup umo\u017e\u0148uje realizovat geometrick\u00e9 tvary, jako jsou z\u00e1vitov\u00e9 otvory nebo hlubok\u00e9 slep\u00e9 d\u00edry, kter\u00e9 by bylo nemo\u017en\u00e9 obrobit p\u0159\u00edmo do \u010dela formy. Samostatn\u00e9 j\u00e1drov\u00e9 \u010depy se pou\u017e\u00edvaj\u00ed proto, \u017ee hlubok\u00e9 prvky se obt\u00ed\u017en\u011b obr\u00e1b\u011bj\u00ed p\u0159\u00edmo do bloku formy, a vym\u011bniteln\u00e9 \u010depy v\u00fdrazn\u011b sni\u017euj\u00ed n\u00e1klady na \u00fadr\u017ebu v p\u0159\u00edpad\u011b opot\u0159eben\u00ed nebo zlomen\u00ed.<\/p>\n

Souvislost s procesem vyhazov\u00e1n\u00ed<\/h3>\n

J\u00e1drov\u00e9 \u010depy mohou b\u00fdt upevn\u011bny k pevn\u00e9 nebo pohybliv\u00e9 polovin\u011b formy, osazeny do posuvn\u00fdch prvk\u016f (suport\u016f) nebo ovl\u00e1d\u00e1ny hydraulicky. P\u0159i vyhazov\u00e1n\u00ed mus\u00ed \u010depy uvolnit odlitek bez zadrh\u00e1v\u00e1n\u00ed. Nesouosost mezi j\u00e1drov\u00fdm \u010depem a vyhazovac\u00edm \u010depem pracuj\u00edc\u00edm v jeho bl\u00edzkosti zp\u016fsobuje zasek\u00e1v\u00e1n\u00ed, zanech\u00e1v\u00e1 stopy na povrchu odlitku nebo vede k ohnut\u00ed \u010depu vlivem bo\u010dn\u00edho zat\u00ed\u017een\u00ed.<\/p>\n

Konstruk\u010dn\u00ed faktory ovliv\u0148uj\u00edc\u00ed funkci j\u00e1drov\u00e9ho \u010depu<\/h2>\n

N\u00e1vrh \u010depu zahrnuje v\u00edce ne\u017e jen volbu pr\u016fm\u011bru a d\u00e9lky. Geometrie, slitina a tepeln\u00e9 chov\u00e1n\u00ed se vz\u00e1jemn\u011b ovliv\u0148uj\u00ed; chyba v jednom z t\u011bchto aspekt\u016f vytv\u00e1\u0159\u00ed probl\u00e9my, kter\u00e9 na prvn\u00ed pohled vypadaj\u00ed jako pot\u00ed\u017ee s v\u00fdrobn\u00edm procesem, ale jejich p\u0159\u00ed\u010dina spo\u010d\u00edv\u00e1 ji\u017e v konstruk\u010dn\u00ed dokumentaci n\u00e1stroje.<\/p>\n

\"\u010dty\u0159i<\/p>\n

Geometrie a pom\u011br d\u00e9lky k pr\u016fm\u011bru (L\/D)<\/h3>\n

Pom\u011br d\u00e9lky k pr\u016fm\u011bru (L\/D) je nejd\u016fle\u017eit\u011bj\u0161\u00edm geometrick\u00fdm omezen\u00edm. Dlouh\u00e9 a tenk\u00e9 \u010depy se vlivem vst\u0159ikovac\u00edho tlaku proh\u00fdbaj\u00ed; p\u0159i vysok\u00fdch pom\u011brech L\/D vede tento pr\u016fhyb k trval\u00e9 deformaci nebo n\u00e1hl\u00e9mu zlomen\u00ed. Praktick\u00fdm pravidlem je, \u017ee pom\u011bry L\/D vy\u0161\u0161\u00ed ne\u017e 6:1 vy\u017eaduj\u00ed dodate\u010dn\u00e1 opat\u0159en\u00ed, jako je pou\u017eit\u00ed vodic\u00edch pouzder, zv\u011bt\u0161en\u00ed pr\u016fm\u011bru \u010depu nebo sn\u00ed\u017een\u00ed rychlosti pln\u011bn\u00ed.<\/p>\n

\u00dakosy, odvzdu\u0161n\u011bn\u00ed a charakteristika pln\u011bn\u00ed<\/h3>\n

\u00dakos na j\u00e1drov\u00e9m \u010depu (obvykle 0,5 a\u017e 1,0 stupn\u011b) sni\u017euje s\u00edlu pot\u0159ebnou k vyhozen\u00ed v\u00fdlisku a usnad\u0148uje jeho uvoln\u011bn\u00ed z formy. Proud\u011bn\u00ed kovu kolem \u010depu vytv\u00e1\u0159\u00ed svarovou linii v m\u00edst\u011b, kde se setk\u00e1vaj\u00ed dv\u011b \u010dela proudu taveniny;\u00a0anal\u00fdza toku taveniny ve form\u011b<\/a><\/span>\u00a0umo\u017e\u0148uje ov\u011b\u0159it, zda je poloha svarov\u00e9 linie p\u0159ijateln\u00e1, je\u0161t\u011b p\u0159ed zah\u00e1jen\u00edm v\u00fdroby formy (obr\u00e1b\u011bn\u00edm oceli). Odvzdu\u0161n\u011bn\u00ed v bl\u00edzkosti \u010dep\u016f zabra\u0148uje vzniku por\u00e9znosti zp\u016fsoben\u00e9 uzav\u0159en\u00fdm vzduchem; tuto funkci mohou plnit mal\u00e9 odvzdu\u0161\u0148ovac\u00ed kan\u00e1lky, pokud jsou vhodn\u011b um\u00edst\u011bny v\u00a0konstrukci formy<\/a><\/span>.<\/p>\n

\u00dapravy specifick\u00e9 pro danou slitinu<\/h3>\n

Hlin\u00edk se vst\u0159ikuje vysokou rychlost\u00ed a p\u0159i vysok\u00e9 teplot\u011b, co\u017e vy\u017eaduje \u010depy s vy\u0161\u0161\u00ed tvrdost\u00ed, povrchovou \u00fapravou odolnou proti erozi a vnit\u0159n\u00edm chlazen\u00edm. Zinek se zpracov\u00e1v\u00e1 p\u0159i ni\u017e\u0161\u00edch teplot\u00e1ch, co\u017e sni\u017euje tepeln\u00fd \u0161ok, av\u0161ak jeho sklon k p\u0159ichyt\u00e1v\u00e1n\u00ed na povrch formy (tzv. \u201ep\u0159iva\u0159ov\u00e1n\u00ed\u201c) \u010din\u00ed povrchovou \u00fapravu \u010dep\u016f kl\u00ed\u010dovou. Ho\u0159\u010d\u00edkov\u00e9 slitiny jsou leh\u010d\u00ed, ale zpracov\u00e1vaj\u00ed se p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch; tenkost\u011bnn\u00e9 d\u00edly \u010dasto vy\u017eaduj\u00ed \u0161t\u00edhl\u00e9 \u010depy, co\u017e zvy\u0161uje pom\u011br d\u00e9lky k pr\u016fm\u011bru (L\/D) a \u010din\u00ed konstrukci jejich opory z\u00e1sadn\u00ed.<\/p>\n

Volba materi\u00e1l\u016f, tvrdosti a povrchov\u00fdch \u00faprav<\/h2>\n

Volba oceli, tepeln\u00e9 zpracov\u00e1n\u00ed a povrchov\u00e1 \u00faprava ur\u010duj\u00ed \u017eivotnost \u010depu a to, zda se opakovan\u011b vyskytnou probl\u00e9my s nalepov\u00e1n\u00edm materi\u00e1lu (tzv. soldering) \u010di eroz\u00ed. Dodavatel\u00e9 materi\u00e1l\u016f zve\u0159ej\u0148uj\u00ed konkr\u00e9tn\u00ed specifikace, kter\u00e9 dokl\u00e1daj\u00ed, jak z\u00e1sadn\u00ed vliv m\u00e1 v\u00fdb\u011br materi\u00e1lu na \u017eivotnost n\u00e1stroje.<\/p>\n

N\u00e1strojov\u00e9 oceli a tepeln\u00e1 odolnost<\/h3>\n

N\u00e1strojov\u00e1 ocel H13<\/a><\/span>\u00a0je nejpou\u017e\u00edvan\u011bj\u0161\u00edm materi\u00e1lem pro j\u00e1drov\u00e9 \u010depy; nab\u00edz\u00ed vyv\u00e1\u017eenou kombinaci tvrdosti za tepla, odolnosti proti tepeln\u00e9 \u00fanav\u011b a hou\u017eevnatosti, co\u017e je ide\u00e1ln\u00ed pro aplikace zahrnuj\u00edc\u00ed hlin\u00edk a zinek. C\u00edlov\u00e1 tvrdost se obvykle pohybuje v rozmez\u00ed 44 a\u017e 52 HRC. Stejn\u011b d\u016fle\u017eit\u00e1 jako c\u00edlov\u00e1 hodnota tvrdosti je i rovnom\u011brnost tepeln\u00e9ho zpracov\u00e1n\u00ed; nerovnom\u011brn\u00e9 prokalen\u00ed \u010din\u00ed \u010dep n\u00e1chyln\u00fdm k selh\u00e1n\u00ed.<\/p>\n

Chlazen\u00ed a speci\u00e1ln\u00ed konstrukce<\/h3>\n

Standardn\u00ed pln\u00e9 j\u00e1drov\u00e9 \u010depy b\u011bhem opakovan\u00fdch vst\u0159ikovac\u00edch cykl\u016f akumuluj\u00ed teplo, \u010d\u00edm\u017e se zvy\u0161uje riziko nalepov\u00e1n\u00ed materi\u00e1lu. \u010cepy s vnit\u0159n\u00edm chlazen\u00edm vyu\u017e\u00edvaj\u00ed vnit\u0159n\u00ed trubi\u010dku nebo vrtan\u00fd kan\u00e1lek k cirkulaci vody \u010di oleje, co\u017e prodlu\u017euje jejich \u017eivotnost v n\u00e1ro\u010dn\u00fdch aplikac\u00edch. Speci\u00e1ln\u00ed \u010depy s vlo\u017ekami z berylliov\u00e9 m\u011bdi zlep\u0161uj\u00ed odvod tepla v m\u00edstech, kam nelze zav\u00e9st kan\u00e1lky pro vodn\u00ed chlazen\u00ed.<\/p>\n

Povlaky a povrchov\u00e9 \u00fapravy<\/h3>\n

Povlaky nan\u00e1\u0161en\u00e9 metodou PVD (nap\u0159. CrN, TiAlN, AlCrN) zvy\u0161uj\u00ed povrchovou tvrdost, sni\u017euj\u00ed t\u0159en\u00ed a vytv\u00e1\u0159ej\u00ed bari\u00e9ru proti nalepov\u00e1n\u00ed materi\u00e1lu a erozi. Nitridace vytv\u00e1\u0159\u00ed tvrzenou difuzn\u00ed vrstvu, kter\u00e1 zvy\u0161uje odolnost proti opot\u0159eben\u00ed a osv\u011bd\u010duje se p\u0159i zpracov\u00e1n\u00ed zinku i v m\u00e9n\u011b n\u00e1ro\u010dn\u00fdch aplikac\u00edch s hlin\u00edkem.<\/p>\n

\u010cast\u00e9 p\u0159\u00ed\u010diny selh\u00e1n\u00ed a preventivn\u00ed \u00fadr\u017eba<\/h2>\n

Pochopen\u00ed mechanism\u016f a p\u0159\u00ed\u010din selh\u00e1n\u00ed \u010dep\u016f umo\u017e\u0148uje technick\u00fdm t\u00fdm\u016fm a pracovn\u00edk\u016fm \u00fadr\u017eby sestavit harmonogramy a zav\u00e9st procesn\u00ed kontroly, kter\u00e9 zajist\u00ed stabilitu v\u00fdroby.<\/p>\n

\"sou\u0159adnicov\u00fd<\/p>\n

Zlomen\u00ed, eroze a tepeln\u00e1 \u00fanava<\/h3>\n

Ke zlomen\u00ed \u010depu doch\u00e1z\u00ed, kdy\u017e ohybov\u00e9 nap\u011bt\u00ed p\u0159ekro\u010d\u00ed pevnost v tahu. Situaci \u010dasto zhor\u0161uje nespr\u00e1vn\u00e9 ustaven\u00ed; s opot\u0159eben\u00edm vodic\u00edch sloupk\u016f se m\u011bn\u00ed poloha \u010depu, \u010d\u00edm\u017e se vst\u0159ikovac\u00ed tlak p\u0159en\u00e1\u0161\u00ed jako bo\u010dn\u00ed zat\u00ed\u017een\u00ed na d\u0159\u00edk \u010depu. Kombinace t\u011bchto faktor\u016f m\u016f\u017ee zp\u016fsobit, \u017ee \u00fadr\u017eba n\u00e1stroje bude p\u0159i\u00a0dan\u00fdch objemech v\u00fdroby ne\u00fanosn\u00e1<\/a>. Eroze je nav\u00edc zp\u016fsobena proud\u011bn\u00edm kovu vysokou rychlost\u00ed, kter\u00e9 naru\u0161uje povrch \u010depu, zat\u00edmco tepeln\u00e1 \u00fanava vede ke vzniku tepeln\u00fdch trhlin v d\u016fsledku opakovan\u00e9ho rychl\u00e9ho zah\u0159\u00edv\u00e1n\u00ed a ochlazov\u00e1n\u00ed.<\/p>\n

Pl\u00e1nov\u00e1n\u00ed preventivn\u00ed \u00fadr\u017eby<\/h3>\n

Reaktivn\u00ed \u00fadr\u017eba je n\u00e1kladn\u00e1. Sledov\u00e1n\u00ed stavu \u010dep\u016f p\u0159i ka\u017ed\u00e9 pl\u00e1novan\u00e9 kontrole formy \u2013 m\u011b\u0159en\u00ed pevnosti ulo\u017een\u00ed,\u00a0stavu povrchu<\/a>a p\u0159\u00edmosti \u2013 poskytuje t\u00fdmu \u00fadaje pot\u0159ebn\u00e9 ke stanoven\u00ed interval\u016f pl\u00e1novan\u00e9 v\u00fdm\u011bny je\u0161t\u011b p\u0159edt\u00edm, ne\u017e dojde k selh\u00e1n\u00ed.<\/p>\n

Kontrola, tolerance a \u0159\u00edzen\u00ed kvality<\/h2>\n

Kontrola rozm\u011br\u016f prvk\u016f odlitku vytvo\u0159en\u00fdch pomoc\u00ed j\u00e1drov\u00fdch \u010dep\u016f vy\u017eaduje ov\u011b\u0159en\u00ed jak stavu \u010depu, tak p\u0159esnosti geometrie, kterou \u010dep vytv\u00e1\u0159\u00ed.<\/p>\n

Kontrola rozm\u011br\u016f<\/h3>\n

Je nutn\u00e9 pravideln\u011b ov\u011b\u0159ovat pr\u016fm\u011br, kruhovitost a d\u00e9lku j\u00e1drov\u00e9ho \u010depu. Eroze \u010depu m\u016f\u017ee zp\u016fsobit, \u017ee pr\u016fm\u011br v\u00fdsledn\u00e9ho otvoru p\u0159ekro\u010d\u00ed toleran\u010dn\u00ed p\u00e1smo stanoven\u00e9 z\u00e1kazn\u00edkem.\u00a0Kontrola prvn\u00edho kusu<\/a>\u00a0by m\u011bla p\u0159ed uvoln\u011bn\u00edm do v\u00fdroby potvrdit shodu prvk\u016f vytvo\u0159en\u00fdch \u010depem s v\u00fdkresem d\u00edlu, a to pomoc\u00ed kalibrovan\u00fdch m\u011b\u0159idel nebo dat ze sou\u0159adnicov\u00e9ho m\u011b\u0159ic\u00edho stroje (CMM).<\/p>\n

Pokro\u010dil\u00e1 validace (CMM a rentgen)<\/h3>\n

Sou\u0159adnicov\u00e9 m\u011b\u0159ic\u00ed stroje (CMM) ov\u011b\u0159uj\u00ed polohu a pr\u016fm\u011br otvor\u016f. Rentgenov\u00e1 kontrola je obzvl\u00e1\u0161t\u011b u\u017eite\u010dn\u00e1 pro detekci sta\u017eenin (porozity) ve st\u011bn\u00e1ch p\u0159il\u00e9haj\u00edc\u00edch k prvk\u016fm typu \u010dep. Posouzen\u00ed schopnost\u00ed dodavatele v oblasti n\u00e1stroj\u016f zahrnuje \u0159\u00e1dn\u00fd postup validace n\u00e1stroje, v\u010detn\u011b po\u010d\u00e1te\u010dn\u00ed rozm\u011brov\u00e9 kontroly, posouzen\u00ed prvn\u00edch v\u00fdlisk\u016f a studie zp\u016fsobilosti procesu. Tento zdokumentovan\u00fd d\u016fkaz shody je po\u017eadavkem programu pro zaji\u0161t\u011bn\u00ed stabiln\u00ed v\u00fdroby.<\/p>\n

Optimalizujte sv\u00e9 n\u00e1stroje se spole\u010dnost\u00ed Moldie<\/h2>\n

P\u0159i v\u00fdrob\u011b\u00a0slo\u017eit\u00fdch geometri\u00ed<\/span>\u00a0nebo d\u00edl\u016f se slo\u017eit\u00fdmi\u00a0vnit\u0159n\u00edmi prvky<\/span>vede spol\u00e9h\u00e1n\u00ed se na standardn\u00ed \u0159e\u0161en\u00ed \u010dasto k p\u0159ed\u010dasn\u00e9mu\u00a0opot\u0159eben\u00ed<\/span>\u00a0a n\u00e1kladn\u00fdm\u00a0odst\u00e1vk\u00e1m<\/span>. Ve spole\u010dnosti Moldie se specializujeme na komplexn\u00ed\u00a0n\u00e1vrh forem pro tlakov\u00e9 lit\u00ed<\/a><\/span>\u00a0a p\u0159esnou v\u00fdrobu forem pro tlakov\u00e9 lit\u00ed<\/a><\/span>.<\/p>\n

A\u0165 u\u017e pot\u0159ebujete zak\u00e1zkov\u00e9 j\u00e1drov\u00e9 \u010depy kovan\u00e9 z oceli H13, kter\u00e9 odolaj\u00ed extr\u00e9mn\u00edm teplot\u00e1m a tlak\u016fm, nebo odborn\u00e9 poradenstv\u00ed p\u0159i v\u00fdb\u011bru materi\u00e1lu pro zaji\u0161t\u011bn\u00ed struktur\u00e1ln\u00ed integrity odlitku, n\u00e1\u0161 t\u00fdm je p\u0159ipraven podpo\u0159it va\u0161e velkos\u00e9riov\u00e9 v\u00fdrobn\u00ed procesy. Pom\u00e1h\u00e1me in\u017een\u00fdr\u016fm optimalizovat ka\u017ed\u00fd n\u00e1stroj a dutinu tak, aby se maximalizovala \u017eivotnost a zachovala p\u0159\u00edsn\u00e1 rozm\u011brov\u00e1 p\u0159esnost.<\/p>\n

Jste p\u0159ipraveni vytvo\u0159it lep\u0161\u00ed n\u00e1stroje pro\u00a0va\u0161e aplikace tlakov\u00e9ho lit\u00ed<\/span>? Zjist\u011bte\u00a0jak pracujeme<\/a><\/span>\u00a0nebo n\u00e1s kontaktujte je\u0161t\u011b dnes a za\u010dn\u011bte optimalizovat sv\u016fj dal\u0161\u00ed projekt.<\/p>\n

\u010casto kladen\u00e1 ot\u00e1zka<\/h2>\n

Kdy byste m\u011bli pou\u017e\u00edt zak\u00e1zkov\u00e9 j\u00e1drov\u00e9 \u010depy nam\u00edsto standardn\u00edch?<\/h3>\n

Pou\u017eijte\u00a0zak\u00e1zkov\u00e9 j\u00e1drov\u00e9 \u010depy<\/span>\u00a0pokud m\u00e1te\u00a0tenk\u00e9 st\u011bny<\/span>,\u00a0slo\u017eitou geometrii<\/span>, p\u0159\u00edsn\u00e9\u00a0specifikace<\/span>\u00a0nebo po\u017eadavky, p\u0159\u00edpadn\u011b pokud pot\u0159ebujete optimalizovat\u00a0tvar a velikost<\/span>\u00a0pro sn\u00ed\u017een\u00ed\u00a0rizika vzniku vad<\/span>\u00a0a zlep\u0161en\u00ed\u00a0rozm\u011brov\u00e9 p\u0159esnosti<\/span>.<\/p>\n

Jak\u00e9 je praktick\u00e9 pravidlo pro pom\u011br d\u00e9lky k pr\u016fm\u011bru (L\/D) u ocelov\u00fdch jader?<\/h3>\n

Obecn\u011b plat\u00ed, \u017ee pokud pom\u011br L\/D p\u0159ekro\u010d\u00ed 6:1, prudce roste riziko pr\u016fhybu a obvykle je nutn\u00e9 zajistit dodate\u010dnou oporu, zv\u011bt\u0161it pr\u016fm\u011br nebo sn\u00ed\u017eit lok\u00e1ln\u00ed tlak<\/span>\u00a0a rychlost pln\u011bn\u00ed.<\/p>\n

Jak souvisej\u00ed probl\u00e9my s j\u00e1drov\u00fdmi \u010depy a vyhazovac\u00edmi \u010depy?<\/h3>\n

Pokud nejsou j\u00e1drov\u00fd \u010dep a\u00a0vyhazovac\u00ed \u010dep<\/span>\u00a0vz\u00e1jemn\u011b dob\u0159e slad\u011bny, m\u016f\u017ee se d\u00edl p\u0159i vyhazov\u00e1n\u00ed zaseknout, co\u017e vede ke vzniku stop, deformac\u00edm nebo zrychlen\u00e9mu opot\u0159eben\u00ed, a t\u00edm negativn\u011b ovliv\u0148uje produktivitu i \u017eivotnost n\u00e1stroje.<\/p>\n

Jak\u00e9 kontroly umo\u017e\u0148uj\u00ed v\u010das odhalit probl\u00e9my spojen\u00e9 s j\u00e1dry?<\/h3>\n

Pom\u00e1haj\u00ed pravideln\u00e9 kontroly pr\u016fm\u011bru a p\u0159\u00edmosti j\u00e1drov\u00fdch \u010dep\u016f a ov\u011b\u0159ov\u00e1n\u00ed rozm\u011br\u016f \u010di polohy otvor\u016f pomoc\u00ed sou\u0159adnicov\u00e9ho m\u011b\u0159ic\u00edho stroje (CMM); rentgenov\u00e1 kontrola dok\u00e1\u017ee odhalit p\u00f3rovitost v bl\u00edzkosti\u00a0j\u00e1dra formy<\/span>\u00a0d\u0159\u00edve, ne\u017e se probl\u00e9m projev\u00ed p\u0159i pou\u017e\u00edv\u00e1n\u00ed v\u00fdrobku.<\/p>\n","protected":false},"excerpt":{"rendered":"

J\u00e1drov\u00e9 \u010depy jsou drobn\u00e9 sou\u010d\u00e1sti uvnit\u0159 n\u00e1stroje pro tlakov\u00e9 lit\u00ed. Vytv\u00e1\u0159ej\u00ed otvory, dr\u00e1\u017eky a vnit\u0159n\u00ed dutiny, kter\u00e9 ur\u010duj\u00ed funkci d\u00edlu; jejich geometrie, materi\u00e1l a um\u00edst\u011bn\u00ed ovliv\u0148uj\u00ed pr\u016fb\u011bh pln\u011bn\u00ed formy, spolehlivost vyhazov\u00e1n\u00ed,\u00a0rozm\u011brovou p\u0159esnosta \u017eivotnost n\u00e1stroje v pr\u016fb\u011bhu ka\u017ed\u00e9 v\u00fdrobn\u00ed s\u00e9rie. Tento blog se zab\u00fdv\u00e1 souvislostmi mezi konstrukc\u00ed j\u00e1drov\u00e9ho \u010depu a v\u00fdb\u011brem slitiny, strategi\u00ed chlazen\u00ed, mo\u017en\u00fdmi zp\u016fsoby […]<\/p>\n","protected":false},"author":1,"featured_media":24298,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"J\u00e1drov\u00fd \u010dep ve form\u011b pro tlakov\u00e9 lit\u00ed: konstrukce, materi\u00e1ly a v\u00fdkon","_seopress_titles_desc":"Zjist\u011bte, jak konstrukce j\u00e1drov\u00e9ho \u010depu ovliv\u0148uje kvalitu, \u017eivotnost a efektivitu tlakov\u00e9ho lit\u00ed; \u010dl\u00e1nek p\u0159in\u00e1\u0161\u00ed odborn\u00e9 tipy t\u00fdkaj\u00edc\u00ed se materi\u00e1l\u016f, chlazen\u00ed, prevence poruch a kontroly.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_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":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_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-23846","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\/23846","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=23846"}],"version-history":[{"count":4,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23846\/revisions"}],"predecessor-version":[{"id":26457,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/23846\/revisions\/26457"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/media\/24298"}],"wp:attachment":[{"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/media?parent=23846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/categories?post=23846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moldiecasting.com\/cs\/wp-json\/wp\/v2\/tags?post=23846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}