关于金刚石钻头底出刃锐化处理的试验研究

Experimental Research on Sharpening Face Exposure of Diamond Drill Bit

摘要:

在我国固体矿产地质勘探中，金刚石钻进是一种主要的钻进方法。金刚石钻进时，破碎岩石是靠镶在钻头胎体中的金刚石底出刃完成的。随着钻孔的加深和孔底岩石的破碎，金刚石底出刃被磨损，直接影响机械钻速和钻头进尺，直至钻头报废。因此对钻头金刚石出刃磨锐问题，应该给予充分注意。俄罗斯Спирин В.И.教授等利用电化学原理对钻头底出刃进行锐化处理，以提高机械钻速和钻头进尺，基于此原理研制了野外用轻便式电化学锐化处理金刚石钻头的设备，工程应用验证，取得了很好的技术经济效果。

Abstract:

In the geological exploration of solid mineral resources in China, diamond drilling is a main drilling method. In the diamond drilling, rock fragmentation is mainly realized by the diamonds set in bit crown. Along with the rock fragmentation at the bottom hole and the borehole depth increasing, the diamond face exposure is worn, which has direct influence on drilling rate and bit footage until the bit is discarded. Therefore the sharpening of the diamond face exposure should be paid a special attention. Russian doctor Спирин В.И. and some others have made a lot of studies on sharpening the diamond face exposure by using electrochemical principle in order to improve the penetration rate and bit footage; and based on this principle, the portable diamond bit electrochemical sharpening device has been developed for field application with very good technical and economic effects.