Research on the longitudinal rolling forming process of copper-aluminum bimetallic composite pipes
CHEN Xing-rui
WANG Xiao-gang
XING Yu-lin
NAN Wu-jiang
CAI Hao-yuan
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.
Keywords：copper-aluminum composite pipelongitudinal rolling formingeffective compounding
Publication Date：2024-01-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 45-53 )