摘要 : 采用自主设计的真空熔炼下引连铸设备制备出超低氧含量高纯无氧铜杆铸坯,对高纯无氧铜杆的化学成分、导电性能、显微组织及拉伸性能进行了测试分析,并与商业无氧铜TU00进行对比,结果表明,在真空度10~100 Pa、熔炼温度1150℃~1180℃、保温时间0.5~1小时... 展开 采用自主设计的真空熔炼下引连铸设备制备出超低氧含量高纯无氧铜杆铸坯,对高纯无氧铜杆的化学成分、导电性能、显微组织及拉伸性能进行了测试分析,并与商业无氧铜TU00进行对比,结果表明,在真空度10~100 Pa、熔炼温度1150℃~1180℃、保温时间0.5~1小时、电磁场电流强度50 A~80 A、牵引速度100~120 mm/min、冷却水温25℃~35℃的工艺条件下,高纯无氧铜的氧含量为0.48 ppm、导电率(%IACS)为102、抗拉强度为344.4 MPa、断后伸长率3%,各项性能指标均优于商业无氧铜TU00。Ultra low oxygen content high-purity oxygen free copper rod castings were prepared using self-designed vacuum melting and continuous casting equipment. The chemical composition, conductivity, microstructure, and tensile properties of high-purity oxygen free copper rods were tested and analyzed, and compared with commercial oxygen free copper TU00. The results showed that under the process conditions of vacuum degree 1~100 Pa, melting temperature 1150˚C~1180˚C, holding time 0.5~1 hour, electromagnetic field current intensity 50 A~80 A, traction speed 20~150 mm/min, and cooling water temperature 25˚C~30˚C, the oxygen content of high-purity oxygen free copper was 0.48 ppm, conductivity (%IACS) 102, tensile strength reached 344.4 MPa, and elongation after fracture 3%. All performance indicators were superior to the commercial oxygen free copper TU00. 收起