一、前言球齿钎头能承受大的冲击能,凿孔速度快、修磨周期长(或不修磨)、辅助工时短,在采掘部门应用日益广泛。在科研和生产部门的通力合作下,我国球齿钎头的研制取得了长足的进展,但与瑞典等国同类产品相比还有一定的差距。钎头的使用寿命,直接影响凿岩成本。多年来,国外一些科研单位,一直把延长钎头的使用寿命作为研究的重要课题。球齿钎头的使用寿命不仅与钎头的结 I. Introduction Ball tooth bit can withstand a large impact energy, punching speed, long grinding cycle (or not grinding), aided short working hours, mining sector in an increasingly wide range of applications. With the concerted efforts of scientific research and production departments, great progress has been made in the development of ball tooth brazing heads in our country. However, there is still a certain gap compared with similar products in Sweden and other countries. Drill bit life, a direct impact on rock drilling costs. Over the years, some foreign scientific research units, has been to extend the service life of the solder head as an important issue for the study. The service life of the ball tooth bit is not only tied with the bit