MIG-V工作站在高速动车铝合金车体侧墙焊接中的应用

Application of MIG-Ⅴ station to welding of side wall in high speed MU body of aluminum alloy

随着轨道行业的不断发展,车辆高速度和轻量化要求不断提高,铝合金车体需求量随之大幅增加,对铝焊接内在质量及其外观要求也不断提高,机械化熔化极惰性气体保护焊(MIG-V)工作站得到了更广泛的应用。它效率高、焊缝质量稳定可靠、工艺过程操控性好、性价比高。介绍了MIG-V工作站在铝合金车体侧墙焊接中的应用,分析研究了MIG-V在长、大中空薄壁型材焊接上存在的问题,并提出了改进措施与建议,为大型薄壁铝合金型材长直焊缝的自动焊、高速焊提供技术参考。

With the development of rail transportation industry,the requirements of high speed and light weight on railway vehicle are continuously improve.The quantity demanded of Al alloy MU body is rapidly increased.The requirements on inherent quality and appearance in welding of Al alloy are enhanced,the MIG-V station are applied more extensive because of its high efficiency,stable and reliable weld quality,good process control and high cost performance.The apphcation of MIG- V station to welding of side wall in high speed MU body of Al alloy was introduced.The problems in welding of large hollow aluminum profile were analyzed,and the improvement measures and suggestions were proposed,which can provide the reference for automatic welding and high speed welding of large thin-walled aluminum profile.