北京科技大学学报2012，Vol.34Issue(11)：1301-1307,7.
矩形断面铜包铝连铸坯轧制成形导电扁排的工艺及性能
Rolling process and properties of copper cladding aluminum flat bars using continuous casting bars with the rectangle section
摘要
Abstract
Copper cladding aluminum(CCA) rods with the section dimensions of 50 mm×30 mm×3 mm×R4 mm were fabricated by horizontal core-filling continuous casting(HCFC) technology,and then CCA flat bars with the section dimensions of 60 mm×8 mm were formed from the CCA rods by multi-pass rolling and finishing drawing process.The reasonable rolling process,mechanical properties and electrical properties of the flat bars were investigated subsequently.The results confirm the correlation between the width of the flat bars after rolling and the side-edge cracking behavior.The width of the flat bars can be controlled by allocating the pass reduction and setting the temperature of the rolling process,thereby suppressing the side-edge cracking in the flat bars.The reasonable rolling temperature range is from room temperature to 200 ℃.When rolling at room temperature,the much reasonable rolling schedule is 5 passes flat rolling,the 1st pass reduction of about 20% and the highest pass reduction of about 30%.Through 1 pass finishing drawing after the rolling process,the flat bars can be obtained with precise section size and excellent surface quality.After annealing treatment,the electrical resistivity of the flat bar is 2.084×10^-8 Ω·m,the tensile strength is 122.7 MPa,the elongation is 22.0% and the shear bonding strength of the interface is 25.9 MPa.关键词
导电排/铜/铝/金属复合/轧制成形/力学性能/电阻率Key words
busbars/copper/aluminum/metal cladding/rolling/mechanical properties/electrical resistivity分类
矿业与冶金引用本文复制引用
吴永福,刘新华,谢建新..矩形断面铜包铝连铸坯轧制成形导电扁排的工艺及性能[J].北京科技大学学报,2012,34(11):1301-1307,7.基金项目
国家高技术研究发展计划资助项目 （）
