重点论述了硬质合金中小钎头的钎焊方法和材质等方面的研究工作。采用22SiMnCrNiMo低碳合金钢作钎头壳体、A03型号硬质合金作钎头合金片,焊料选用Dy-811铜基焊料,使用中频感应钎焊方法,研制了白银牌中小钎头。由于选材合理、钎焊工艺先进,显著地提高了钎焊质量和钎头的综合性能,致使钎头的使用寿命达到了国际同类型产品水平。该产品已批量生产,并进入我国深圳、珠海和东南亚市场 Focus on the cemented carbide small and medium brazing method and material aspects of the research work. Using 22SiMnCrNiMo low-carbon alloy steel for the first bit shell, A03 type carbide alloy for the first bit of solder, the choice of Dy-811 solder copper-based solder, the use of IF induction brazing method, developed a silver medium and small bit. Due to the reasonable material selection and advanced brazing technology, the quality of brazing and the comprehensive performance of brazing head are remarkably improved, resulting in the service life of brazing head reaching the level of the same kind of international products. The product has been mass-produced, and enter China’s Shenzhen, Zhuhai and Southeast Asian markets