摘要
Abstract
Copper-aluminum composite pipes are mainly used in connecting pipe fittings such as refrigerators and air conditioners,with excellent mechanical properties,good machinability and strong economy.At the same time,as an efficient pipe forming method,longitudinal rolled pipe is suitable for rolling and forming copper-aluminum composite pipes.In this paper,the theoretical study of rolling deformation,hole shape system,rolling force,elongation,etc.,and the analysis of finite element simulation composite pipe continuous rolling forming,combined with experiments,the experimental results show that the inner and outer walls of the composite pipe are smooth and defect-free,and the mechanical binding force is 2.92 MPa,which realizes effective composite.The average errors between the theoretical and measured values of rolling force,as well as between the theoretical and simulated values,were 16.44%and 15.33%,respectively.The average errors between the simulated and measured values of copper layer,aluminum layer and total wall thickness were 2.36%,1.62%and 2.07%,respectively.The average errors between the theoretical and measured values of elongation,as well as between the theoretical and simulated values,were 7.94%and 5.11%,respectively,which were within a reasonable range.The results verify the accuracy and reliability of the theoretical research and simulation analysis of the copper-aluminum bimetallic composite tube rolling and forming process.关键词
铜铝复合管/纵轧成形/有效复合Key words
copper-aluminum composite pipe/longitudinal rolling forming/effective compounding分类
矿业与冶金
