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去年六月在安徽屯溪举行的金刚石钻头设计加工调研会,对钻头的金刚石浓度问题提出了新的理论,引起了各方面的争论和重视。金刚石孕镶钻头传统浓度是75％或50％,甚至更低。特别对付打滑地层通常都采用低浓度,低硬度的办法。但在屯溪会上,长春地质学院的张祖培付教授及探矿工艺所的邵继武同志都提出了提高金刚石浓度的新论点。他们认为:当浓度在0—70％范围内,由于金刚石含量少,在钻进过程中容易破碎,钻头表现出较低的耐磨性,钻头寿命很低。当浓度在70—120％范围内时,钻头的耐磨性与浓度几乎是直线关系。因为随浓度的增
In June last year, held in Tunxi, Anhui Province Diamond Bit Design and Processing Research Conference on the diamond bit concentration of diamonds put forward a new theory, has aroused controversy and attention in all aspects. The traditional concentration of diamond impregnated drill is 75% or 50%, or even lower. Especially for dealing with slippery strata are generally used low concentration, low hardness approach. However, at the Tunxi meeting, Prof. Zhang Zupei of Changchun Geological College and Comrade Shao Jiwu of the Prospecting Institute put forward new arguments for increasing the diamond concentration. They think that when the concentration is in the range of 0-70%, the drill bit shows low wear resistance and the bit life is very low due to the low content of diamond, which is easy to break during drilling. When the concentration is in the range of 70-120%, the wear resistance of the drill bit is almost linear with the concentration. Because with the increase of concentration