本文介绍了我国小直径硬质合金钎头和矿用硬质合金的研究成果,以大量实验数据,说明了用新型钎头取代苏式老一字钎头,用YJ_1、YG105等低钴粗晶粒合金取代YG15合金的必要性。进一步阐述了对钎头质量和合金利用率有重大影响的合金片合理高度的确定原则和设计方法,提出了小直径钎头合金片高度系列的具体建议,对我国小直径硬质合金钎头的更新换代以及对编制新的矿用合金品种系列,有一定参考意义。 This paper introduces the research results of small diameter carbide drill bits and mining cemented carbide in our country. Based on a large amount of experimental data, it is demonstrated that the new type of drill bits can replace the old one and the low cobalt coarse crystals (YJ_1, YG105) Necessity of grain alloy to replace YG15 alloy. Further elaborated the principle and design method of the reasonable height of the alloy flake which has a great influence on the quality and alloy utilization rate of drill bit and put forward the concrete proposal of the height series of small diameter brazing alloy flake, Replacement and preparation of new series of mining alloy varieties, there is a certain reference value.