Patent ID: 6830094
Filing Date: 2004-12-14
Classification: B22D

Abstract:
Device for producing metal diecast parts made of nonferrous metals, having a hot-chamber diecasting machine with an ascending duct in a casting vessel and having a mold mouthpiece arranged in front of a gate system of a mold, and a gate in front of a diecasting mold cavity, a cross-section of the gate being configured to accommodate flow of a respective molten metal therethrough sufficient to permit mold fill between about 5 ms and about 30 ms when the molten metal is at a casting temperature of at least 400Â° C.,wherein the gate is part of a heating-duct gate system which provides a heating of ducts and of nozzles opening to the mold cavity, wherein nozzle tips directly adjoining the mold cavity are fitted onto the nozzles, the nozzle tips having one of a comb-type and a fan-type gating system and the one of the comb-type and fan-type gating system forming the gate or being disposed directly in front of it, and wherein individual ducts of the nozzle tips are constructed to have such a small cross-section that molten metal situated therein changes into a semisolid condition after filling of the mold.