| 摘要 |
The invention relates to a method for producing a composite material for a sliding bearing (10) comprising a support layer (14), in particular made of steel, a bearing metal layer (18) made of a lead-free aluminum base alloy containing magnesium, and a running layer (22), wherein the aluminum base alloy, finally, comprises 0.5-5.5 wt.% of magnesium, optionally one or more alloy components selected from the group consisting of zinc, copper, silicon, iron, manganese, chromium, titanium, zirconium, vanadium, nickel, cobalt, cerium and alloy components caused by impurities, the sum of the latter not exceeding 1 wt.%, the remainder being aluminum, wherein the aluminum base alloy is copper-free or has at most 3 wt.% of copper, the total content of zinc, copper and nickel being a maximum of 8 wt.% and the total content of all alloy components being a maximum of 12 wt.%. According to the invention, the bearing metal layer (18) is rolled either directly onto the support layer (14) or is previously roller-plated with an intermediate layer (38) of an aluminum alloy or of technical pure aluminum and is then rolled onto the support layer (14) with the intermediate arrangement of said intermediate layer (38) in such a way that the intermediate layer (38) subsequently has a thickness of at most 100 μm, in particular at most 50 μm, wherein the thus obtained composite of support layer (14) and bearing metal layer (18) is soft-annealed at temperatures between 280-350 °C for 2 to 10 hours so that the bearing metal layer of the composite has a Brinell hardness of 50-80 HB 1/5/30. The running layer (22) is subsequently applied galvanically or by means of a PVD method onto the bearing metal layer (18). |
