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为了解决天然金刚石供应不足的问题,冶金地质系统与有关协作单位,遵照毛主席“独立自主,自力更生”的教导,最近几年重点进行了人造金刚石钻进技术的实验、研究工作,取得了不少的成绩.我们机台从1971年开始,分别在芳畈、团山沟、灵乡等矿区进行了人造金刚石地表钻进试验,通过几年的实践,我们体会到小口径金刚石钻进比钢粒钻进具有许多优点.在过去几年里,我国在天然金刚石和人造金刚石地表钻进中,转数始终较低,均为300～500转/分,钻头使用寿命也短.特别是人造金刚石钻头,由于单晶粒度(孕镶钻头上)较细,在低转数下,更难充分发挥其
In order to solve the problem of insufficient supply of natural diamonds, the metallurgical and geological system and related cooperative units, in accordance with the teaching of Chairman Mao “independent and self-reliance ”, have conducted experiments and studies on synthetic diamond drilling technology in recent years and made no Less achievements.Our machine from 1971 onwards, respectively, in fang 畈, TuanShanGou, LingXiang mine and other artificial diamond surface drilling test, through several years of practice, we realize that small diameter diamond drilling than steel Drilling has many advantages in the past few years, our country in the natural diamond and synthetic diamond surface drilling, the revolutions are always low, are 300 ~ 500 rev / min, bit life is short, especially synthetic diamond bit , It is more difficult to give full play to its grain size (impregnated drill bits) at low rpm