Study On Hard Surfacing Materials Of In-situ Carbide Reinforced High Manganese Steel

Welding electrode by adding strong elements in the formation of carbon compounds, using arc metallurgy and heat treatment of the role of the subsequent formation of hard carbide particles are dispersed. Diffusion formation of carbide hard particles can not only strengthen the surfacing layer while increasing the wear surfacing layer capacity, but also can reduce the matrix of carbon content, increasing the toughness of the matrix.Using the idea of above,this article to be based on D256 high manganese electrode components, added the same amount of graphite, rare earth elements and the different iron content and particle size of vanadium, titanium-iron particles, through the arc metallurgical reaction in the Q235-A surfacing, is generated containing vanadium carbide and titanium carbide hard surfacing layer of particles. By HR-150 hardness tester hardness of surfacing layer, using ML-100 type aircraft and abrasive wear and adhesion wear machine M-200 weld overlay wear resistance were investigated.The results indicated that the particle size and concentration of vanadium and iron layer on the welding performance is greatly affected. Electrode surfacing layer compared with the D256, with self carbide hard surfacing layer of particles with high hardness and good wear resistance.