Research On Rolling Process And Theory Of Cu/Al Rolling Clad Sheet

Within the domain of the family products, multifarious machines, transports and commodities, from the viewpoint of the saving energy and resource, the developing direction is reducing the weight of production and improving of capability and function. Therefore, it has more need to basis materials' function such as aluminum and copper etc. Which is composed of one single material can't meet people's need any more. It's urgent for the new materials which possess some special abilities and functions. And Cu/Al compound material not only have the advantage of Cu such as good conducting electricity, high transmitting heat rate, low electric resistance and beautiful appearance, but also have the advantage of Al such as light weight and economy etc. The Cu/Al clad sheet still have the capability such as low electric resistance of the interface, bearing the eclipse, enduring, good ductility and molding etc. It can be widely used with every realm, such as electric appliances, electric power, metallurgy equipments, machine, automobile, tools and so on.On the base of studying extensive documents, this paper has clarified the application of Cu/Al composite material and its manufacturing methods. Nowadays, there are the problems of the big rolling reduction ratio and low bonding strength in Cu/Al roll cladding. Besides, Cu/Al roll cladding is not fit for hot rolling. Aiming at those problems, the Cu/Al/Cu composite material was produced by control atmosphere hot-rolling cladding and cold-rolling cladding. The effect to the bonding strength of the interface was studied by different techniques of roll cladding and methods of the surface treatment.In this paper the bonding sheets of Cu/Al/Cu were produced by hot rolling. In order to increase the bond strength of the clad sheets, improve the capability of re-machining and growth of intermetallic compound (IMC) at the interface, the techniques and method of rolling, the method of the surface preparation, heat-treated and the mechanisms of bonding were investigated.Based on the difficulty in compounding Cu and Al by rolling due to the oxidation at the surface of Cu, the technique of compounding Cu and Al with plating by rolling was investigated. It was found that Cu and Al could be compounded by hot rolling in...