普通W18Cr4V高速钢车刀的形状简单,工作部位只在刀头刃部,且钨系列高速钢中的碳化钨稳定,联碳趋势小,晶粒不易粗大。鉴于上述分析,以25mm×25mm×200mm普通高速钢车刀为例,在小批量生产中,可采用箱式电阻炉预热,高频感应加热至淬火温度淬火,具体工艺如下:1.第1段整体预热:采用R Ordinary W18Cr4V high-speed steel turning the shape of the knife is simple, the working parts only blade edge, and tungsten series tungsten carbide high-speed steel stability, the carbon joint trend is small, difficult to coarse grains. In view of the above analysis to 25mm × 25mm × 200mm ordinary high-speed steel turning tool, for example, in small batch production, box resistance furnace can be used to preheat, high frequency induction heating to quenching temperature quenching, the specific process is as follows: 1. The first Overall warm-up: the use of R