钻头,在钻进过程中受力是复杂的,因而人们对钻头的结构及胎体(指金刚石钻头而言)的要求是苛刻的。从结构上看,为了及时导走和排除不断产生的热量和岩粉,以维持钻头的正常工作,水口起着重要作用。即使是磨料粒度较粗、出刃较高的表镶钻头,设计时也要慎密地考虑水路问题,更不用说设计磨料细,出刃矮的孕镶钻头了。 The drill bit is complex in the drilling process, and therefore, the requirements on the bit structure and the carcass (referred to as diamond drill bit) are harsh. From the structural point of view, the water outlet plays an important role in order to promptly guide and remove the continuously generated heat and rock powder to maintain the normal operation of the drill bit. Even for table bits with coarser grain sizes and higher cutting edges, the waterway problem should be carefully considered when designing, not to mention designing the abrasive material to produce a bit of a bit of a pregnant bit.