Dieless micro-pyretic manufacturing technique for fabricating bearing materials and the bearing materials produced thereby
AssigneeUniversity of Cincinnati
InventorsJainagesh A. Sehkar, A. K. Bhattacharya, Hung P. Li
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Abstract
The present invention relates to a method of fabricating various types of bearing materials and the bearing materials produced thereby. The processes of the invention may be used to produce porous self-lubricating bearings, laminated composite bearings (babbitt bearings) and bearings for high temperature application. The processes of the invention involve the use of micro-pyretic synthesis to achieve bearing materials with improved bearing properties, including higher bearing capacity and toughness.
Claims50
A method of preparing a bearing material for use in a self-lubricating bearing, said method comprising:
- (1) preparing a combustible powder mixture capable of undergoing micro-pyretic synthesis, said mixture comprising:
- (a) at least one bearing component powder;
- (b) at least one low friction coefficient material powder;
- and
- (c) at least one combustible material powder;
- (2) compressing said combustible powder mixture into a shape;
- and
- (3) igniting said combustible powder mixture and allowing said combustible powder mixture to undergo micro-pyretic synthesis for sufficient time so as to form said bearing material.
A method of preparing a babbitt bearing composite material, said method comprising:
- (1) preparing a babbitt bearing support material with a combustible powder mixture capable of undergoing micro-pyretic synthesis, said mixture comprising:
- (a) at least one bearing component powder;
- and
- (b) at least one combustible material powder;
- and
- (2) igniting said combustible powder mixture and allowing said combustible powder mixture to undergo micro-pyretic synthesis so as to form a porous layer on said bearing support material;
- and
- (3) melting at least one low friction coefficient material into said porous layer so as to produce said bearing composite material.
A method for preparing a bearing material comprising a bearing support material, for use in a high temperature bearing and the like, said method comprising:
- (1) preparing a combustible powder mixture capable of undergoing micro-pyretic synthesis, said powder mixture comprising:
- (a) at least one bearing component powder;
- (b) at least one combustible material powder;
- and
- (c) a powder containing molybdenum sulfide powder;
- (2) compacting said combustible powder mixture;
- and
- (3) igniting said combustible powder mixture and allowing said combustible powder mixture to undergo micro-pyretic synthesis so as to form said bearing material.
Dependencies are inferred from the claim text.