近年来,由于我国钎头工业的发展,出现了不少的新品种,钎头评定工作越来越普遍。而评定钎头的好坏又不能脱离使用条件——岩石特性。但是,目前我国大部分矿山仍用普氏岩石分级法作为岩石定级的依据。本人认为,这种方法尚有不足之处,缺乏严密的科学性,给钎头评定工作带来了不少困难。其主要表现是评定工作过于简单化,从钎头寿命角度看所定岩石等级缺乏准确性,情报资料不能作为钎头研制与实践的依据,不能分门别类地、层次清楚地研制和使用钎头。因此,在一定程度上,阻碍了钎 In recent years, due to the development of China’s drill head industry, there have been many new varieties, bit qualification work more and more common. The assessment of the quality of the bit can not be separated from the conditions of use - the rock properties. However, most of the mines in our country still use Platts grading as the basis for rock grading. In my opinion, this method has some shortcomings, lack of rigorous scientific features, and has brought many difficulties to the work of bit qualification. Its main manifestation is the over simplification of assessment work, the lack of accuracy of the determined rock grade from the viewpoint of the life of the drill bit, the intelligence data can not be used as the basis for the development and practice of the drill bit, and the drill bits can not be clearly developed and used separately. Therefore, to a certain extent, hindered the brazing