对凿岩针头和钎杆上的硬质合金片（齿）进行修磨，其理由显然是因为用纯的钎具作业件能特别差，因此，舍得在修磨设备和修磨技术上面投资，就能在降低凿岩成本的同时，改善钎具的作业性能。凿岩钎具上的硬质合金片（齿）磨损的特点大不相同，这些差别是由钻凿的岩石的不同性质 The reason for the sharpening of the hard alloy flakes (teeth) on the rock needles and drill rods is apparently due to the particularly poor workability of the tool with pure brazing tools and, therefore, the willingness to invest in sharpening equipment and grinding technology, Can reduce the cost of drilling at the same time, improve the performance of the brazing tools. The characteristics of the galling (tooth) wear on the rock drill are quite different, and these differences are due to the different properties of the rock being drilled