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US 4,312,900 AGranted
Method of treating sliding metal contact surfaces
AssigneeFord Motor Company
InventorLeslie G. Simpson
Life of this patent
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Abstract
A method of treating metal sliding contact surfaces is disclosed. The method comprises pitting the surface (as by shot-blasting with glass or sand), impregnating the pitted surface with a dry lubricant (such as powdered graphite or MoS.sub.2), and roughening the impregnated surface to partially close the pits and to generate "peaks" of metal which are worn away during a bedding-in of the interengaging sliding contact surfaces.
Claims2
A method of treating a metal contact surface for sliding engagement with another surface which comprises:
- (a) pitting said surface by shot blasting;
- (b) impregnating the pitted surface with a dry lubricant consisting of MoS.sub.2 ;
- and
- (c) roughening the impregnated surface by shot blasting with glass shot having an average particle size of 250-400 microns in a manner to move some of the metal of the contact surface to form peaks for overhanging and partially closing at least some of said pits.
1 more element
Dependencies are inferred from the claim text.