单一粒度金刚石对Fe–Cu基钻头钻进性能的影响

Effect of single size diamond on drilling performance of the Fe-Cu-based bit

在某Fe–Cu基钻头配方中分别配以相同浓度、不同粒度及相同粒度、不同浓度的金刚石制作钻头,对比研究金刚石粒度、浓度对Fe–Cu基胎体钻头钻进性能的影响。结果表明:使用Fe–Cu基配方和粒度代号40/45、浓度50%的单一粒度金刚石钻头对花岗岩的钻进性能最佳,其钻耗比约为9 000,钻进效率约为1.1mm/s。

The effects of diamond particle size and concentration on drilling performance and mechanical properties of Fe-Cu matrix bits were studied by using diamonds of the same concentration but different particle size,or the same particle size but different concentration in Fe-Cu matrix formula.Results show that the diamond bit with particle size of 40/45 and concentration of 50% has the best drilling performance by using granite at Fe-Cu formula,which is bit wear ratio of 9000 and drilling efficiency of 1.1 mm/s.