Copper-based alloy casting process

Details Copper-based alloy casting process Copper-based alloy casting process

1996-11-19

1999-08-31

Denion, Thomas E.

Expansible chamber devices

With assembly or disassembly facilitating means

921691, 92 71, 29888061, F01B 2900

Patent

active

059439424

ABSTRACT:
A cost-effective process for providing a copper-based alloy casting, which has superior wear characteristics, to a cylinder block is described. The process includes providing a negative pressure around the cylinder block and a copper-based alloy. The process further includes heating the copper-based alloy to a submolten state for immersing the cylinder block within such, while promoting the entrained gas within the copper-based alloy to migrate in a given direction and terminate in a specified portion of the copper-based alloy to effectively control porosity. The process further includes cooling the immersed cylinder block in the given direction to effectively reduce microshrinkage of the copper-based alloy.

REFERENCES:
patent: 3319575 (1967-05-01), Havens
patent: 3550233 (1970-12-01), Rubery et al.
patent: 3803687 (1974-04-01), Alger, Jr. et al.
patent: 3808659 (1974-05-01), Alger, Jr. et al.
patent: 5085127 (1992-02-01), Gantzer

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