Determination of Forming Technology of CuSn Alloy Contact Wire Used for High-Speed Electric Railway

The CuSn alloy contact wire used for high-speed electric railway was formed with different forming technologies, the comprehensive properties of finished wire with different forming technology were analyzed, and the optimum forming technology of CuSn alloy contact wire was determined. The results show that the optimum forming technology was continuous casting, extrusion, rolling for passes 3 and drawing. The tensile strength, elongation and resistivity of the contact wire formed by optimum forming technology were 538 MPa, 12% and 2.360×10-8 Ω·m respectively, and repeated bending times was 9, wring cycles was 11. Combination properties reached or exceeded the requirements of TB/T 2809-2005 standard, and could meet the application requirements of high-speed electric railway.