JPS5764470A - Pressure pouring crucible type automatic pouring equipment - Google Patents

Abstract

PURPOSE: To easily control the pouring amount of molten metal into the mold and, at the same time, to economized the consumption of expensive inert gas, by constructing the pressure pouring crucible type automaic pouring equipment with the primary pressure chamber and the secondary pressure chamber.

CONSTITUTION: A furnace body 1 of automatic pouring equipment is consturcted with the primary presure chamber 2, the secondary pressure chamber 4, an molten metal lead-in path 3 to the secondary pressure chamber 4 which connects both chambers 2 and 4, and a molten metal supplying hole 5. When a molten metal 15 in the primary pressure chamber 2 is introduced into the secondary pressure chamber 4 through the lead-in path 3 by the pressure of the inert gas, such as Ar, N, etc., supplied through a gas supplying hole 6, a level detector 9 detects the level of the molten metal and generates a signal when the detector 9 detects the level. When e signal is generated, a solenoid brake 14 fitted to the lower part of the wall surface of the lead-in path 3 works and the flow of the molten metal in the lead-in path 3 is blocked. At the same time, a control valve 11 for the path from a compressed air supplying source 13 works and compressed air whose pressure is adjusted by a pressure adjusting valve 12 enters into the secondary pressure chamber 4, and thus, the molten metal is poured into the mold under a uniform flow through a pouring port 8.

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