| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer bearing manufacturing method using an impregnation coating composition not including lead or a lead compound for improving and stabilizing a sliding property such as a dynamic friction coefficient or an abrasion loss at high bearing pressure. SOLUTION: The manufacturing method is provided for a multilayer bearing 1 composed of a porous layer 3 formed on the surface of a metal back plate 2, and an impregnation coating composition 4 with which the porus layer 3 is impregnated and coated. The impregnation coating composition 4 does not include leads but is composed of at least one selected from a polyimide resin and a polyphenylene sulfide resin, a predetermined granular inorganic filler, carbon fibers, and a polytetrafluoroethylene resin as the rest. The manufacturing method comprises a step of spraying copper or copper alloy powder to the surface of the metal back plate 2, and heating and pressurizing it to form the porous layer 3 of sintered metal on the surface of the metal back plate 2, and a step of applying the impregnation coating composition 4 to the porous layer 3, and heating and pressurizing it to impregnate and coat the porous layer 3 with the impregnation coating composition 4. COPYRIGHT: (C)2009,JPO&INPIT
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