摘要
钎焊金刚石薄壁钻是一种采用真空钎焊技术进行的高性能超硬材料钻削工具。根据钻削工具的固有特征,将顶部磨料择优取向,取金刚石岀刃点为(111)面与(110)面结合晶棱,在钻削过程中刃口锋利,排屑顺畅,摩擦生热少,显示出极高的钻进效率和使用寿命。通过实际钻进验证可知:择优取向Φ6小钻头寿命比普通钻头提高接近1倍,平均钻速提高50%以上,并且钻进非常平稳;择优取向Φ32mm常规钻头寿命比普通钻头提高1倍以上,平均钻速提高50%以上,并且钻进非常平稳;择优取向Φ32mm常规钻头寿命比均布钻头提高30%以上,钻进平稳性相当。
Brazing diamond core drill bit is a type of high-performance superhard material drilling tool which adopts the vacuum brazing technology.In view of the inherent feature of drilling tools,preferred orientation has been adopted for abrasive on the top and com-bined crystal edges of (1 1 1)and (1 10)face has been taken as blade edge of the diamond. This type of drill has a sharp Cutting-edge,smooth chip evacuation and less friction heat and presents high drilling efficiency and long service life.The actual drilling test shows that service life of preferred orientationФ6 and Ф32mm drill bits is almost doubled com-pared to conventional drill bit and the average drilling rate has been improved by over 50% with a very smooth drilling performance;service life of preferred orientationФ32mm has been increased by over 30% compared to uniform bit and the drilling stability of them is similar.
出处
《超硬材料工程》
CAS
2015年第4期7-11,共5页
Superhard Material Engineering
关键词
钎焊金刚石
薄壁钻
择优取向
性能影响
brazing diamond
core drill bit
preferred orientation
performance influence