Aimed at the difficulty in thin plate welding,and the status of poor welding quality,and more welding defects traditional welding characteristics was analyzed,and the new technics of the electrode manual weld with wire for low carbon steel thin plate was explored based on the characteristic of gas welding.

To meet the need of production and guarantee the quality of castings and welding-on,the technical system and the testing standard of gas welding and electric act welding have been studied and set up,which can be used to compensate for some defects of nodular iron castings.

Two combined welding processes for 65Mn high strength strip steel,including gas welding-forging and pressing-tempering and argon arc welding-heat treatment,are introduced in the paper.