Spherical bearing overlay casting process

Details Spherical bearing overlay casting process Spherical bearing overlay casting process

1990-10-09

1992-08-11

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

164 691, 164131, B22D 1900, B22D 2900

Patent

active

051370743

ABSTRACT:
The invention is a method of forming a spherical bearing shell comprising an overlay casting process which utilizes a ceramic insert having a semi-spherical close-tolerance outer surface with a casting sprue opening therethrough and lubrication ribs on said outer surface. The ceramic insert is placed within structural bearing housing, defining an overlay cavity therebetween which is then cast with a molten bearing alloy into the sprue opening of the insert to a level above the height of the overlay cavity. The sprue opening is then back-drilled so that the ceramic insert and plug of bearing alloy can be separated from the bearing housing and overlay surface leaving a semi-spherical bearing surface with lubrication grooves cast therein.

REFERENCES:
patent: 1738438 (1930-12-01), Landers
patent: 1938257 (1933-12-01), Jones
patent: 2833638 (1958-05-01), Owen
patent: 3967013 (1976-06-01), Danis
patent: 4779665 (1988-10-01), Ouimet
patent: 4794685 (1989-01-01), Hillier
patent: 4903386 (1990-02-01), Teramachi

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