基于有限元分析的煤矿井下新型弧角型聚晶金刚石复合片钻头优化设计
孙荣军1,2, 谷拴成1, 居培2, 高科3

Optimal design of new arc angle PDC drill bit for coal mining based on finite element method
SUN Rong-jun1,2, GU Shuan-cheng1, JU Pei2, GAO Ke3
已使用内凹PDC钻头照片