Patent ID: 7290588
Filing Date: 2007-11-06
Classification: B22D

Abstract:
1. A shielding gas device for pressure die-casting machines, comprising: a plurality of inlet nozzles, the inlet nozzles being configured to introduce a shielding gas mixture into a melting furnace; a container, the container being configured to receive a mixture of individual shielding gas components from a plurality of gas sources; and a metering device connected between the container and the inlet nozzles for metering of flow of the shielding gas mixture into the furnace wherein the container is a pressure accumulator, and the metering device is configured to maintain a shielding gas mixture operating pressure at the inlet nozzles which is equal to or less than a pressure in the container, while maintaining the operating pressure high enough to atomize the shielding gas mixture downstream from the inlet nozzles.