凿岩机钎头是矿山、隧道、水利等工程上用量很大的易损耗件。目前国内大多数厂家的钎头生产以机械加工为主，即采用切削加工成形出针头作，尔后高频钎焊硬质合金。工序多，材料利用率低。有的厂家采用精铸钎头体毛坯，因其性能较差影响了针头的使用寿命；有的厂家采用热锻制坯 Rock drill bits are mines, tunnels, water conservancy projects such as a large amount of consumables. At present, most domestic manufacturers of bit production to the main machining, that is, the use of cutting forming needle, and later high-frequency brazing carbide. Many processes, low material utilization. Some manufacturers use precision cast bit body blank, because of its poor performance affect the life of the needle; Some manufacturers use hot forging billet