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冲击式钻机的断钻事故比较常见,据我矿统计,1964年达132次,1965年达148次。一根新钻杆价值1430元,断后当废铁处理只值100元左右,就这样,全矿每年要损失6～7万元。我矿谢永仁等同志为了挽回这笔损失,利用废的电铲大方轴和铲杆制作了一台钻杆调直工具台,并配二百吨油压机一台,将弯坏了的钻杆调直。然后用气焊将折断的钻杆端头割出坡口,并用电焊焊接,焊条用钢12A。修复一根断钻杆约需6个人工,8公斤电石、1瓶氧气和28公斤焊条,工本费约150元。修复的钻杆经一年多的使用后证明,除了短一些以外,和原钻杆没有什么差别,完全顶用。
Drilling accident drilling machine is more common, according to mine statistics, up to 132 in 1964, 1965 up to 148 times. A new drill pipe worth 1430 yuan, after the break when the scrap iron treatment is only about 100 yuan, so, the whole mine every year to 6 to 7 million loss. My mine Xie Yongren and other comrades in order to restore this loss, the use of waste electric shovel generous shaft and shovel rod made a drill pipe straightening tool table, with two hundred tons of hydraulic machine one, the broken pipe straightening . Then use gas welding will break the end of the drill pipe cut out of the groove, and with electric welding, welding steel 12A. Repair a broken drill about 6 artificial, 8 kg calcium carbide, a bottle of oxygen and 28 kg electrode, the cost of about 150 yuan. After more than a year of use of the repaired drill pipe, it proved that there is no difference between the drill pipe and the original drill pipe except that it is shorter, so it is completely used.