由于温热挤压兼有冷挤与热挤的优点,在挤压中碳钢与合金钢中有着实用的意义,所以被广泛的采用。但是在温热挤压中存在着一个较严重的问题,即凸模在工作过程中受到动态的拉压交变应力及坯料的热作用,工作情况较为恶劣,因此凸模最易折断与磨损。为了改善凸模的工作情况,在凸模上提 As the hot extrusion both cold extrusion and hot extrusion advantages in the extrusion of carbon steel and alloy steel has a practical significance, it is widely used. However, there is a more serious problem in warm extrusion, that is, the punch is subjected to dynamic tension-compression alternating stress and the thermal effect of the billet during the working process, and the working conditions are relatively poor. Therefore, the punch can be easily broken and worn. In order to improve the working condition of the punch, raised on the punch