Abstract : emulsion " s effect mechanism on impregnated diamond bit " s self sharpness is presented through analyses of experience and testing data in drilling with impregnated diamond bits in hard and compact ground 文摘:通过对孕镶金刚石钻头钻探坚硬致密地层的工程实践和实验数据的探讨,提出了乳化液对孕镶金刚石钻头自锐作用的机理。