Method and apparatus for squeeze casting pistons with wear...

Details Method and apparatus for squeeze casting pistons with wear... Method and apparatus for squeeze casting pistons with wear...

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. .

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