高时效长寿命弱包镶钻头研究

Research on the weak wrap impregnated bit of high efficiency and long life for drilling ultra-hard rock

分析了钻头钻进极坚硬地层时的打滑原因 ,提出了利用弱包镶手段解决打滑的新思路 ,研究了弱包镶钻头的工作机理 ,从理论上解释了弱包镶钻头的高时效和长寿命特性 ,介绍了该类钻头的试验情况。

This paper analyzed the reasons for bit sliding in drilling ultra-hard rock,put forward a new method by using weak wrap bits for solving slide,discussed the theory about the weak wrap bit and looked into the reasons of high efficiency and long life in terms of theory.An example for the bits to drill ultra-hard rock was given.