用精密铸造方法制作高速钢刀具较之用传统方法即轧材经锻打加工制作有很多优点。例如:材料利用率高,能利用废弃材料,可节省机床和加工工时,此外对制作大型复杂刀具(如大钻头,大滚刀等)特别有利,铸造高速钢和锻造高速钢相比,不足之处主要是冲击韧性较低。我组研制的铸造85W6Mo5Cr4V2 高速钢,ak在0．4~0．5kg-m/cm~2左右;铸造105 The use of precision casting method of making high-speed steel cutting tool compared with the traditional method that is rolled by forging processing has many advantages. For example: high utilization of materials, the use of waste materials can save machine tools and working hours, in addition to the production of large and complex tools (such as large drill, hob, etc.) is particularly beneficial, compared with high speed steel and forged high speed steel casting, Department is mainly lower impact toughness. I developed a group of cast 85W6Mo5Cr4V2 high-speed steel, ak at 0.4 ~ 0.5kg-m / cm ~ 2; Casting 105