从相图上分析了制取预合金胎体粉末以降低钻头烧结温度的可行性，并结合生产实践介绍了２种预合金粉末的制备方法。从而把制造金刚石钻头的烧结温度降低到９００℃． The feasibility of preparing pre-alloyed carcass powder to reduce bit sintering temperature was analyzed from the phase diagram. The preparation methods of two kinds of pre-alloyed powders were introduced according to production practice. Thus reducing the sintering temperature for the manufacture of diamond bits to 900 ° C.