目前在使用硬质合金钻头方面存在一些缺点，如镶焊规格不统一、钻头出双高低不平、不齐、铜疤多，镶焊时缺乏考虑工作物对象——岩石的物理性质等等。这些问题所以长期不能解决，主要是我们对合金钻头使用不够重视，技术上缺乏研究，不能合理地选择钻头所致，这里我想提出几个问题重点地探讨一下。 At present, there are some shortcomings in the use of carbide drill bits, such as the welding specifications are not uniform, the drill bit out of double uneven, irregularity, copper scar, lack of consideration when considering the work object object - the physical properties of rock and so on. Therefore, these problems can not be solved in the long term. The main reason is that we do not pay enough attention to the use of alloy drill bits, lack of research in technology, and the inability to select the drill bit reasonably. Here I would like to ask a few questions to focus on.