中国有色金属工业总公司西北矿冶研究所采用先进的真空钎焊技术和中频感应钎焊技术研制硬质合金凿岩钎头,已有十几年的历史。已研制成功并用于生产的有直径150毫米、170毫米等规格的潜孔钻头;有直径38～100毫米不同规格的浅孔小钎头和中深孔钎头(以下简称中小钎头)。现具有年产 Northwest Mining and Metallurgy Research Institute of China Nonferrous Metals Industry Corporation has adopted advanced vacuum brazing technology and medium-frequency induction brazing technology to develop hard alloy drill bits, which has been more than 10 years. Has developed and used in the production of the diameter of 150 mm, 170 mm and other specifications of the DTH drill bit; diameter 38 ~ 100 mm different specifications of shallow hole Bits and medium-deep hole bit (hereinafter referred to as small and medium-sized bit). Now has an annual output