Tube-like tungsten carbonate welding bar

摘要: The present invention relates to a tungsten carbide electrode as wear-resisting surfacing material for strengthening tooth face and shirttail of steel cone bit etc.. It includes tube filling held in the tube. described comprises sintered granules whnich its 20-30 mesh is 0-80% 30-40 20-100%, alloy powder organic adhesive, cast also can be added material, 60-95% granules, 0-35% dcarbide 2-6% 0.5-2% adhesive.