关于在中硬研磨性岩层中针状合金钻进效率是否高于普通合金钻进这个问题,当前有两种不同的看法。笔者翻阅了有关资料,试图根据自己的一点实践体会和试验中取得的资料,就此问题谈几点认识。 There are currently two different opinions as to whether the penetration rate of acicular alloy in a medium-hard abrasive rock is higher than that of a normal alloy. I read the relevant information, trying to experience according to their own point of experience and information obtained during the test, to talk about this issue a little knowledge.