Property Study on Coal Cutter Brazed by New Water Soluble Copper Brazing Agent

Abstract

By using HL105 brazing piece as filler metal and the water soluble copper brazing agent made by self, we welded the coal cutter by induction brazing, which was used 42CrMo steel as the body and YG15 hard alloy as the head. By studying the microstructure and mechanical property of brazing seam, we found that the bending strength of the joint welded by using the home-made fluxes had achieved a superior level. The quality of brazing seam on the condition of the fluxes and water in a four-to-six ratio was superior to that when the fluxes is dewatering borax or the fluxes and water in a half-to-half ratio.