异种金属焊接会增大焊接构件搅拌区内较软材料一侧的残余应力。
The residual stress of the softer metal in the nugget zone can be increased in the joining of the dissimilar metals.
针对异种金属焊接存在的难点，综述了常用的焊接方法及其优缺点。
To the difficulties of dissimilar metals welding, advantages and disadvantages of general welding ways are studied.
通过铜钢异种金属焊接容易产生缺陷的分析，采用合理的焊接工艺，以保证工件质量。
Through analyzing the imperfect of the welding of copper-steel profile metal, adopt reasonable welding technology to guarantee a quantity of work.
应用推荐