{"id":23494,"date":"2025-03-15T13:39:21","date_gmt":"2025-03-15T05:39:21","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=23494"},"modified":"2026-10-09T02:21:37","modified_gmt":"2026-10-08T18:21:37","slug":"metal-injection-molding-vs-die-casting","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/cs\/blog\/metal-injection-molding-vs-die-casting\/","title":{"rendered":"Vst\u0159ikov\u00e1n\u00ed kovov\u00e9ho pr\u00e1\u0161ku vs. tlakov\u00e9 lit\u00ed: kter\u00e1 metoda je lep\u0161\u00ed?"},"content":{"rendered":"

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Hlavn\u00ed poznatky<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Kategorie<\/strong><\/th>\nVst\u0159ikov\u00e1n\u00ed kovov\u00e9ho pr\u00e1\u0161ku (MIM)<\/strong><\/th>\nTlakov\u00e9 lit\u00ed<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Proces<\/strong><\/td>\n1. Kovov\u00fd pr\u00e1\u0161ek se sm\u00edch\u00e1 s pojivem.
\n2. Sm\u011bs se vst\u0159\u00edkne do formy.
\n3. Odstran\u011bn\u00ed pojiva.
\n4. Sp\u00e9k\u00e1n\u00ed.<\/td>\n		1. Roztaven\u00fd kov se pod vysok\u00fdm tlakem vtla\u010d\u00ed do formy.
\n2. Kov se ochlad\u00ed a ztuhne.<\/td>\n<\/tr>\n
Materi\u00e1ly<\/strong><\/td>\nNerezov\u00e1 ocel, titan, m\u011b\u010f, slitiny wolframu, keramika.<\/td>\nNe\u017eelezn\u00e9 kovy (hlin\u00edk, zinek, ho\u0159\u010d\u00edk, slitiny m\u011bdi).<\/td>\n<\/tr>\n
Slo\u017eitost d\u00edlu<\/strong><\/td>\nVysok\u00e1 slo\u017eitost, komplikovan\u00e1 geometrie, jemn\u00e9 detaily<\/td>\nSt\u0159edn\u00ed slo\u017eitost; omezen\u00ed vypl\u00fdvaj\u00edc\u00ed z toku roztaven\u00e9ho kovu a \u00fakos\u016f.<\/td>\n<\/tr>\n
Tlou\u0161\u0165ka st\u011bny<\/strong><\/td>\nVelmi tenk\u00e9 st\u011bny (a\u017e 0.5 mm<\/strong>).<\/td>\nSiln\u011bj\u0161\u00ed st\u011bny (obvykle minim\u00e1ln\u011b 1\u20132.5 mm<\/strong>).<\/td>\n<\/tr>\n
Tolerance<\/strong><\/td>\nP\u0159\u00edsn\u00e9 tolerance (\u00b10.3\u20130.5%<\/strong> rozm\u011bru).<\/td>\nSt\u0159edn\u00ed tolerance (\u00b10.5\u20131%<\/strong> rozm\u011bru).<\/td>\n<\/tr>\n
Kvalita povrchu<\/strong><\/td>\nHladk\u00fd povrch, m\u016f\u017ee v\u0161ak vy\u017eadovat dal\u0161\u00ed \u00fapravy (nap\u0159\u00edklad le\u0161t\u011bn\u00ed nebo povlak).<\/td>\nKvalitn\u00ed povrch p\u0159\u00edmo z formy; minim\u00e1ln\u00ed n\u00e1sledn\u00e9 zpracov\u00e1n\u00ed.<\/td>\n<\/tr>\n
N\u00e1kladov\u00e9 faktory<\/strong><\/td>\nVysok\u00e9 n\u00e1klady na n\u00e1stroje i materi\u00e1l (pr\u00e1\u0161ek); p\u0159i hromadn\u00e9 v\u00fdrob\u011b slo\u017eit\u00fdch d\u00edl\u016f je metoda ekonomick\u00e1.<\/td>\nNi\u017e\u0161\u00ed n\u00e1klady na materi\u00e1l, vysok\u00e9 n\u00e1klady na n\u00e1stroje; v\u00fdhodn\u00e9 pro velk\u00e9 s\u00e9rie.<\/td>\n<\/tr>\n
Typick\u00e9 pou\u017eit\u00ed<\/strong><\/td>\nZdravotnick\u00e9 prost\u0159edky, sou\u010d\u00e1sti st\u0159eln\u00fdch zbran\u00ed, mikrop\u0159evody, \u010d\u00e1sti hodinek.<\/td>\nAutomobilov\u00e9 sou\u010d\u00e1sti (nap\u0159\u00edklad kryty), spot\u0159ebn\u00ed elektronika, instalat\u00e9rsk\u00e9 armatury.<\/td>\n<\/tr>\n
N\u00e1sledn\u00e9 zpracov\u00e1n\u00ed<\/strong><\/td>\nM\u016f\u017ee vy\u017eadovat obr\u00e1b\u011bn\u00ed, tepeln\u00e9 zpracov\u00e1n\u00ed nebo povrchovou \u00fapravu.<\/td>\nO\u0159ez\u00e1n\u00ed, odjehlen\u00ed a povrchov\u00e9 \u00fapravy (nap\u0159\u00edklad pokoven\u00ed nebo lakov\u00e1n\u00ed).<\/td>\n<\/tr>\n
V\u00fdhody<\/strong><\/td>\n– Slo\u017eit\u00e9 geometrie.
\n– Vysok\u00e1 p\u0159esnost.
\n– \u0160irok\u00fd v\u00fdb\u011br materi\u00e1l\u016f.
\n– Tvar bl\u00edzk\u00fd kone\u010dn\u00e9mu.<\/td>\n		– Kr\u00e1tk\u00e9 v\u00fdrobn\u00ed cykly.
\n– Vynikaj\u00edc\u00ed kvalita povrchu.
\n– N\u00e1kladov\u00e1 efektivita p\u0159i velk\u00fdch objemech.<\/td>\n<\/tr>\n
Nev\u00fdhody<\/strong><\/td>\n– Vysok\u00e9 po\u010d\u00e1te\u010dn\u00ed n\u00e1klady.
\n– Omezen\u00e1 velikost d\u00edlu.
\n– Del\u0161\u00ed dodac\u00ed lh\u016fty kv\u016fli sp\u00e9k\u00e1n\u00ed.<\/td>\n		– Omezen\u00ed na kovy s ni\u017e\u0161\u00edm bodem t\u00e1n\u00ed.
\n– P\u00f3rovitost d\u00edl\u016f.
\n– Men\u0161\u00ed flexibilita n\u00e1vrhu.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Co je vst\u0159ikov\u00e1n\u00ed kovov\u00e9ho pr\u00e1\u0161ku?<\/h2>\n

Vst\u0159ikov\u00e1n\u00ed kovov\u00e9ho pr\u00e1\u0161ku je v\u00fdrobn\u00ed metoda, p\u0159i n\u00ed\u017e se kovov\u00fd pr\u00e1\u0161ek m\u00eds\u00ed s plastov\u00fdm pojivem a vznik\u00e1 takzvan\u00e1 vst\u0159ikovac\u00ed sm\u011bs.<\/p>\n

Tato sm\u011bs se pod tlakem vst\u0159\u00edkne do dutiny formy.<\/p>\n

Po ochlazen\u00ed vznikne takzvan\u00fd zelen\u00fd v\u00fdlisek.<\/p>\n

N\u00e1sleduje odstran\u011bn\u00ed pojiva, p\u0159i n\u011bm\u017e se v\u011bt\u0161ina plastov\u00e9ho pojiva odstran\u00ed teplem nebo chemicky. Z\u016fstane hn\u011bd\u00fd v\u00fdlisek, kter\u00fd je k\u0159ehk\u00fd, ale dr\u017e\u00ed tvar.<\/p>\n

V z\u00e1v\u011bre\u010dn\u00e9m kroku se d\u00edl sp\u00e9k\u00e1. Ve vyh\u0159\u00edvan\u00e9 peci s \u0159\u00edzenou atmosf\u00e9rou se zah\u0159\u00edv\u00e1 na teplotu ni\u017e\u0161\u00ed ne\u017e bod t\u00e1n\u00ed kovu.<\/p>\n

Kovov\u00e9 \u010d\u00e1stice se spoj\u00ed a vznikne hutn\u00fd, pevn\u00fd d\u00edl s hustotou p\u0159ibli\u017en\u011b 95-99% hustoty p\u016fvodn\u00edho kovu.<\/p>\n

Materi\u00e1ly pou\u017e\u00edvan\u00e9 p\u0159i MIM<\/h3>\n

MIM umo\u017e\u0148uje zpracov\u00e1vat \u0161irokou \u0161k\u00e1lu kov\u016f a slitin. Mezi nejb\u011b\u017en\u011bj\u0161\u00ed materi\u00e1ly pat\u0159\u00ed nerezov\u00e1 ocel, kter\u00e1 v\u00fdrobk\u016fm poskytuje vynikaj\u00edc\u00ed odolnost proti korozi a pevnost.<\/p>\n

N\u00edzkolegovan\u00e9 oceli jsou obl\u00edben\u00e9 d\u00edky dobr\u00fdm mechanick\u00fdm vlastnostem a ni\u017e\u0161\u00edm n\u00e1klad\u016fm v automobilov\u00e9m a pr\u016fmyslov\u00e9m odv\u011btv\u00ed.<\/p>\n

Mezi dal\u0161\u00ed b\u011b\u017en\u00e9 materi\u00e1ly pro MIM pat\u0159\u00ed:<\/p>\n