继续刃钎头的試驗,我国只有少数矿山試驗过,在試驗过程中还存在着一定的問題。从几个主要的技术經济指标来看,这种钎头有一定的优点,不仅为国家节省大量的硬质合金,而且也使生产率得到提高。因此,值得我們有条件的矿山进一步試驗,以便为將来推广打下基础。 Continue to drill bit test, only a few mines in our country tested, in the course of the test there are still some problems. Judging from several major technical and economic indicators, this kind of drill bit has some advantages, not only saving a large amount of cemented carbide for the country, but also improving the productivity. Therefore, it is worth our further tests of qualified mines to lay the foundation for future promotion.