THREE-LAYER COMPOSITE SELF-LUBRICATING SLIDING BEARING WITH MODIFIED POLYIMIDE ANTI-WEAR LAYER AND METHOD FOR MANUFACTURING THE SAME
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Aug 1, 2011
filing date -
Jun 17, 2011
priority date (Note) -
Abandoned
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Abstract
A three-layer composite self-lubricating sliding bearing with modified polyimide anti-wear layer, wherein a porous spherical bronze powder layer is sintered on a surface of a steel plate, characterized in that a self-lubricating sliding bearing sheet is formed by covering the porous spherical bronze powder layer with a modified polyimide anti-wear material layer, and then the self-lubricating sliding bearing sheet is manufactured into an article of sleeve-shaped sliding bearing or bearing bush or thrust washer or sliding-board or friction disc or ball seat structural part according to conventional processes. The process for manufacturing includes: preparation of a modified polyimide paste; sintering of spherical copper powder; preparation; coating; sintering of the modified polyimide; finish rolling; cutting and forming. The product possesses excellent performances of high stiffness, high strength, high-temperature resistance, and lead-free, and is especially applicable for the sliding bearings with heavy loading, variable loading and high PV value.
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