O2气体保护焊焊丝表面涂层技术研究

Used the method of Mechanical Alloying,put the coating particles which conclude deoxidizer and activated fluxes on to the surface of the welding wire,take the coating particles into welding line,the welding process can be improved.According to the experiment:when the welding condition is small,welding spatters reduce obviously,the propotion of big grain spatters decrased;the appearance of weld is improved,thewidth and depth of the welding seam are increased,the reinforcement decreased,and aspect ratio of weld increased;the number of porosity reduced;droplet transfer frequency ia increased.The main reason is the concurrence of the deoxidizer and activated fluxes which inflenced the metallurgy of the welding process and the action of the arc,improved the welding procedure.