在科研和生产中,往往由于被加工材料的晶质和加工情况的复杂,感到某些高速钢车刀不能满足加工需要,耐用性差。尤其是硬度值偏低的车刀(硬度在HRC65以下),加工某些合金钢时更显困难。近年来,我们对W18Cr4V高速钢车刀的热处理工艺进行了一些实践,找到了提高硬度和使用寿命的某些规律。经过对百余把不同规格的车刀热处理后的检验证明,硬度均在HRC66以上,少数可达到HRC67,使用效果满意。 In scientific research and production, often due to the processing of materials, crystalline and processing complex, feel that some high-speed steel turning tools can not meet the processing needs, poor durability. In particular, the low hardness of the tool (hardness below HRC65), the processing of some alloy steel more difficult. In recent years, we have carried out some practices on the heat treatment process of W18Cr4V high-speed steel turning tools, and found some laws to improve the hardness and service life. After hundreds of different specifications of the lathe after heat treatment test proved that the hardness are above HRC66, a few can reach HRC67, the use of satisfactory results.