在采矿、国防、交通、建筑、地质勘探及其它露天石方工程中，广泛使用干式凿岩的方式。硬质合金钎头是其中消耗量最大的必用工具。目前，我国在干式凿岩中使用的大多为内燃、风动等类型凿岩机，所用钎头主要为片状合金一字形钎头。由于上述工程往往处于交通不便、工程分散、动力有限的条件下，因而近几年来内燃凿岩机以它能源独立、轻便易携、使用方便、投资少、见效快等一系列优点，在许多国防工程、港口建设、水电建设、筑路采石及地质勘探工程的露天凿岩里得到了广泛的应 In the mining, defense, transportation, construction, geological exploration and other open-pit stone projects, the use of dry rock drilling methods. Carbide drill tip is one of the most necessary tools for consumption. At present, most of the dry rock drilling tools used in China are internal combustion and pneumatic rock drilling machines. The main drill bits used are bit-shaped alloy brazing heads. As these projects are often inaccessible, scattered projects, limited power conditions, so in recent years internal combustion rock drill with its energy independence, light and easy to carry, easy to use, less investment, quick and a series of advantages in many national defense projects, Open-cut rock drilling in port construction, hydropower construction, road quarrying and geological exploration projects has been widely applied