为了完成第五个五年计划所规定的任多,必须尽量 节约金属。特别是节约包括高速钢在内的高级合金钢,更 具有特殊意义。 近几年来,由於许多先进的机器制造工厂和科学研 究部门有成效的工作结果,已经创造了很多新结构的切 削刀具;这些刀具可保证大大减少高速钢的消耗。 目前,在机 In order to fulfill the requirements of the Fifth Five-Year Plan, metals must be conserved as much as possible. In particular, to save high-speed steel, including high-alloy steel, more special significance. In recent years, thanks to the productive work of many advanced machine builders and scientific research departments, many new cutting tools have been created; these cutters guarantee a substantial reduction in high-speed steel consumption. At present, the machine