柱齿钻头由于它的硬质合金柱是冷压到经过热处理的钻头体上的。故不受钎焊工艺的影响,便于选材和热处理。参照国内外情况,我们选用五机部标准H24钢(化验结果:0.36％C,0.26％Si,0.35％Mn,0.018％P,0.011％S,1.43％Cr,1.50％Ni,0.26％Mo),在长江机械厂等单位的配合下,采用不同热处理工艺进行了大量的机械性能试验和金相检验(试样在同 Because of its cemented carbide column, the bit is cold pressed onto the heat-treated bit body. It is not affected by the brazing process, easy to material selection and heat treatment. According to the situation at home and abroad, we selected the five machine department standard H24 steel (test result: 0.36% C, 0.26% Si, 0.35% Mn, 0.018% P, 0.011% S, 1.43% Cr, 1.50% Ni, 0.26% Mo) In the Yangtze River Machinery Factory and other units with the use of different heat treatment process carried out a lot of mechanical properties and metallographic examination (sample in the same