Control method for supplying inert gas during metal molding

Details Control method for supplying inert gas during metal molding Control method for supplying inert gas during metal molding

2011-07-26

2011-07-26

Kerns, Kevin P (Department: 1735)

Metal founding

Process

With measuring, testing, inspecting, or condition determination

C164S066100, C164S259000, C164S151400, C164S154600, C164S154800

Reexamination Certificate

active

07984747

ABSTRACT:
A control method for supplying an inert gas from an inert gas source to a storage container for a molten metal through a gas feed path provided with a flow sensor for monitoring the gas flow rate and a solenoid valve for opening and closing the gas feed path for use with metal molding. The control method includes steps of turning off the solenoid valve if a temperature of the storage container is lower than a preset temperature, and turning off the flow sensor; otherwise turning on the solenoid valve and turning on the flow sensor; and stopping the output of the heater of the storage container when the gas flow rate is lower than the preset amount; these steps are controlled in accordance with a command signal from a controller.

REFERENCES:
patent: 6487905 (2002-12-01), Koda et al.
patent: 2002-361386 (2002-12-01), None
patent: 2002361386 (2002-12-01), None

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