【摘要】 本文介绍了近年来国内开发的几种稀土硬质合金刀具的使用性能，分析了其切削性能得以改善的原因，探讨了稀土硬质合金刀具研究今后的发展动态。更多还原

【Abstract】 In this paper, thc cutting performances of several kinds of rare-earth cemented carbide tools which have been developed in China in recent years are reviewed comprehensively. The reasons of the improvement of their cutting performances are analyzed. The further research development of rare-earth cemented carbide tools are also discussed.更多还原