Method and apparatus for eliminating entrapped gas in die castin

Details Method and apparatus for eliminating entrapped gas in die castin Method and apparatus for eliminating entrapped gas in die castin

1977-07-11

1979-04-03

Lazarus, Richard B.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164154, 164155, 164314, B22D 1732, B22D 1710

Patent

active

041472004

ABSTRACT:
In a die casting machine a shot of molten material is transferred through an injection tube at a relatively slow speed so that all the gas present in the tube is forced out through the associated die. When a first portion of the molten material reaches the die cavity, the event is automatically sensed by circuitry which commands the machine to transfer the remainder of the molten material through the injection tube at a relatively fast speed and cause injection thereof into the die.

REFERENCES:
patent: 2786234 (1957-03-01), Beyer
patent: 3731727 (1973-05-01), Mitamura et al.
patent: 3842893 (1974-10-01), Booth
patent: 3964537 (1976-06-01), Koch et al.

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