| Steel-backed Cu-graphite bonding plate, with the better performance of strengthen as steel, heat conduction and abrasion resistance as Cu, high-temperature lubricity as graphite, is ideal bearing material which is widely and largely used in the domain of automotive, railway and aeronautical. However, the existing processing methods have the problems of complicated technology, high production cost, low interfacial strength and segregation of macro organization. The method of semisolid processing is applied into the preparation of Steel-backed Cu-graphite bonding in this paper. Furthermore, this paper provides the method of semisolid composite.The fundamental technical conditions of high quality steel-backed Cu-graphite semisolid bonding plate was decided by a lot of experiments and theoretical analysis.The main contents and conclusion were described as follows.1. The problem of macro-segregation of graphite in Cu-graphite layer was effectively solved using semisolid technology. The semisolid Cu-graphite slurry was gained by the method of electromagnetic-mechanical stirring. The relationship between solid fraction and stirring temperature were got. The conditions for eliminating macro-segregation were obtained.2. The steel-backed Cu-graphite bonding which has high bond strength was prepared by the method of semisolid bonding. Reasonable production process was designed. The relationship between the technological parameters and the interfacial shear strength was studied. Besides, the optimum bonding processing conditions were optimized. The relationship model between interface shear stress and technological parameters was determined by using artificial neural networks technology, which realized the prediction of the interface shear stress.3. The interfacial structure of Steel-backed Cu-graphite semisolid casting-rolling bonding was analysis. The bonding mechanism of semisolid casting-rolling bonding was studied on the basis of the bonding theory.
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