B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/111, 22/176
B22D 19/02 (2006.01) B22D 19/00 (2006.01) B22D 27/00 (2006.01)
Patent
CA 1190024
Abstract of the Disclosure The pistons are cast in a die cavity which is shaped in conformity to the exterior surface of the pistons. An annular ring of wear resistant austenitic iron material is dipped in molten aluminum to preheat and coat it. The annular ring is disposed in the die cavity. A predetermined amount of molten aluminum alloy is poured into the die cavity over the ring. The die cavity is closed by a punch which applies a force to the aluminum alloy as it solidifies. The pressure of the punch presses the aluminum alloy into firm and continuous contact with the ring and the inner surface of the die cavity. The pouring is facilitated by a pouring disc placed in the top of the die cavity to distribute the molten alloy. The pouring disc has a central portion with a plurality of apertures arranged around its periphery. .
393999
Mcguire Michael F.
Miller John T.
Snee David J.
Imperial Clevite Inc.
Marcoux & Sher Swabey Mitchell Houle
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