铜/铝/不锈钢三层复合板成形工艺研究

Research on the forming process of composite plates of copper,aluminum and stainless steel

试验研究了铜/铝/不锈钢三层复合板成形工艺,旨在充分利用各组元的优越性,为应用于散热及炊具等方面用复合板原料提供技术支持。依据轧制复合及热处理工艺理论,主要对铜/铝/不锈钢复合板轧制及热处理成形工艺进行了试验研究。结果表明,随着轧制压下率的增加,复合板的抗拉强度和界面结合强度逐渐增大,杯突值逐渐降低;不锈钢层与冲头接触的杯突值大于铜层与冲头接触的;最优轧制工艺参数:加热温度350℃,保温5 min^10min,压下率33.3%;350℃退火1 h获得了较为理想的抗拉强度及界面结合强度。

The forming process was studied for composite plates of copper, aluminum and stainless steel to take advantage of each component in the plates, so as to advance the tech- nology of composite plates for radiators and cookers. Rolling and forming processes were stud- ied for composite plates of copper, aluminum and stainless steel, based on the theory of roll- ing bonding and heat treatment. The results show that as the rolling reduction grows up, the tensile strength and the interfacial-bonding strength of composite plates increase, but the Erichsen value decreases. When contacted with the punch, the layer of stainless steel has higher Erichsen value than the layer of copper. Parameters are determined for the optimal rolling process, i. e. 350℃ heating temperature,5 - 10 min holding time, and 33.3% reduction. The best combination of tensile strength and interfacial-bonding strength is achieved by annealing at 350℃ for 1 h.