高温热机械加工是提高高速钢小规格钻头(φ3～φ6mm)耐磨性的方法之一。高温热机械加工后采用磨制法制造P6M5高速钢钻头,可使钻头耐用度提高70％。然而,刀具生产中高温热机械加工工艺没能得到应有的发展,这是因为高速钢的塑性较低,并且在不丧失钢的红硬性条件下进行高温 High-temperature thermomechanical processing is one of the methods to improve the wear resistance of high-speed steel small-sized drill bits (φ3 ~ φ6mm). P6M5 high-speed steel drill bits are produced by grinding after high temperature thermo-mechanical machining, which increases the durability of the drill bit by 70%. However, high-temperature thermo-mechanical processes in tool production have not been able to achieve the proper development due to their low plasticity and their high-temperature