Patent ID: 6761209
Filing Date: 2004-07-13
Classification: B22D

Abstract:
A method of operating a hot-chamber pressure diecasting machine in which a liquid metal is delivered in shots by a casting plunger, which is moved back and forth, from a casting vessel dipping into a metal bath, through an ascending duct of the casting vessel, to a mouthpiece body and a nozzle tip into a mold and is pressurized there,comprising the step of moving the casting plunger, after each shot, while the mold is open, from a withdrawn position, in which the casting plunger opens up an inflow from the metal bath into the casting chamber of the casting vessel, to an advanced position, in which the ascending duct and the mouthpiece body are filled with the liquid metal, followed by the step of closing the mold wherein only then is the liquid metal pressed into the mold.