从研究改善鑽粒質量来提高鑽进速度,是近年来鑽探技术上的一个重要問题。目前所使用的鑽粒,一般可分为生鉄鑽粒,钢絲繩鑽粒,廢管材切制的钢块鑽粒,以及鑄鋼鑽粒等四种。由于鋼粒本身具有較高的物理性能和机械强度,所以不論从理論上或从实踐中都証明了钢質鑽粒的鑽进速度較生鉄鑽粒高很多 From the study to improve the quality of drilling to improve the drilling speed, drilling technology in recent years is an important issue. The current use of drill bits, generally can be divided into raw 鉄 drill bits, wire rope drill bits, pipe scrap steel pipe cut diamonds, and cast steel drill four. Due to the high physical properties and mechanical strength of the steel particles themselves, it has been proved theoretically or in practice that the drilling rate of the steel particles is much higher than that of the drill bits