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De Beers公司Richard Shafto博士认为,把热稳定的聚晶金刚石(PCD)切削件用于回转钻进中,能取得与孕镶钻头同样的效果。新型PCD钻头的钻速是孕镶钻头的三倍或四倍,使用寿命一样。在压强为240 MPa(兆巴)的南非坚硬辉长岩中钻进超过16m,钻速可达600 mm/min。
De Beers company Dr. Richard Shafto believes that the use of heat stabilized polycrystalline diamond (PCD) cutting parts for rotary drilling can achieve the same effect as the impregnated drill bit. New PCD drill bit penetration rate is three times or four times the impregnated drill, the same service life. Drill more than 16 m into the South African hard gabbro at a pressure of 240 MPa at a drilling rate of 600 mm / min.