Research on Welding Process of Dissimilar Steel Welding Between 42CrMo and Q345B
The weldability of Q345B steel and 42CrMo alloy steel was researched.Taking tong head of railbound forging as an example.Manipulator,the weldability research and weldability test of dissimilar steel welding between Q345B and 42CrMo were completed,and the rational welding procedure was constituted.Backing welding with SMAW and filling with GMAW were done,and the rational welding parameters were adopted.At last,the good capability of welded joint can be obtained.