1. Product description
The conductivity of high strength copper clad aluminum plate increases with the increase of copper layer thickness. The thickness of copper component exceeds 0.5mm, and the copper component has little effect on the impedance of composite plate; When the width of the copper aluminum composite plate is kept constant, the impedance of the composite plate decreases obviously with the increase of the thickness of the composite plate, but the increase of the thickness of the composite plate has less and less influence on the conductivity of the composite plate; When the thickness of the copper component is kept constant, the impedance of the composite plate decreases with the increase of the thickness of the composite plate. With the increase of the width of the composite plate, the influence of the thickness on the impedance of the composite plate becomes smaller and smaller.
2. Product Features
With the strengthening of the implementation of the national environmental protection industry policy, the application of other metal (Ni, Ti and Cu alloys) composite plate materials continues to grow, and the localization of investment in metallurgy, aerospace, nuclear energy, electronics and other high-tech industries has been greatly accelerated, which also provides a good opportunity for the development of Ni, Ti and Cu metal composite plates. In addition, the requirements of industrial development on metal layered composites are getting higher and higher, the number of layers is getting more and more, and the requirements on service conditions of materials are getting more and more stringent. Therefore, the development of multi metal multilayer composites, which have both structure and functional properties, is one of the important development directions.
3. Application
The requirements of the power industry for high strength copper clad aluminum plate are mainly in four aspects: electrical performance, mechanical performance, processing performance, safety and reliability. The surface copper of copper aluminum composite plate and strip is hot rolled bloom, with dense internal structure, and its mechanical properties and electrical conductivity are superior to those of as cast structure. The copper aluminum composite plate and strip have high bonding strength. The state of the composite bar can be adjusted through heat treatment. The mechanical properties and machinability are the same as those of the pure copper bar. The copper and aluminum materials have their own characteristics. The traditional fusion welding cannot be used for the welding of copper aluminum composite materials. It is suitable for the commonly used brazing process of composite materials. The development of medium-temperature brazing technology has a close relationship with the promotion and application of copper aluminum composite plates and strips. As the conductor material, the electrical performance of copper aluminum composite plate and strip can be adjusted by the cross-sectional area and the volume ratio of copper to aluminum, which can meet the electrical performance requirements. In terms of safety and reliability, the copper aluminum plate and strip passed the high and low-temperature performance test, and the composite performance, electrical performance, and mechanical performance remained unchanged.
4. FAQ
With the increase of the shear gap, the shear band of the plate section gradually decreases, the upper collapse angle, the middle collapse angle, the fracture zone, and the burr gradually increase, the maximum value of work hardening gradually decreases, the scope of work hardening gradually increases, and the Z and Y direction shear forces first decrease and then increase. With the increase of shear speed, the height of the shear zone and fracture zone of the plate section has little change, and the collapse angle of the upper layer, the collapse angle of the middle layer and burr first decrease and then increase, and the work hardening is the most. The large value gradually decreases, the work hardening range basically remains unchanged, and the Z and Y shear forces gradually increase. When the relative shear gap is 2% and the shear speed is 280mm/s, the shear quality is the best. By comparing the shear section morphology of double-layer and three-layer copper aluminum composite plates, it is found that there is no obvious delamination, and when the copper layer is small, the copper layer in the upper layer does not break.
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