Low-pressure moulding process and apparatus

Details Low-pressure moulding process and apparatus Low-pressure moulding process and apparatus

1978-03-08

1981-02-24

Baldwin, Robert D.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164119, 164155, B22D 1706, B22D 1804

Patent

active

042521734

ABSTRACT:
The invention relates to a process and an apparatus for improving the operation for low pressure casting of components such as aluminum and magnesium alloys by controlling the pressure of the inert gas used to cause the metal to flow downwards into the injection tube after the casting of a component at a value higher than that prevailing in the interior of the furnace, the difference between the two pressures being adjustable to a constant value, and enabling two different rates of flow of the inert gas to be established.

REFERENCES:
patent: 3761218 (1973-09-01), Portalier
patent: 3980125 (1976-09-01), Portalier

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