论文部分内容阅读
热作模具在工作时除承受机械应力外,还反复受到加热和冷却,因而,对热作模具钢的主要要求为:(1)高的热稳定性和高温强度;(2)高的热疲劳抗力及机械疲劳抗力;(3)高的耐磨性,等等。热作模具的种类很多,它们的工作条件有很大的差别,因此,对不同的模具应该有不同的性能要求。例如,有的模具工作温度较高,但机械负荷并不很大,用于制造这些模具的钢种,主要应具有高的热强性,并不要求过高的断裂抗力;有些模具在工作时采
In addition to being subjected to mechanical stress at work, the hot die is also subject to repeated heating and cooling. Therefore, the main requirements for hot die steel are: (1) high thermal stability and high temperature strength; (2) high thermal fatigue Resistance and mechanical fatigue resistance; (3) high wear resistance, and so on. There are many types of hot die, their working conditions are very different, therefore, different molds should have different performance requirements. For example, some molds have higher working temperature but not much mechanical load. The steel used for making these molds should mainly have high thermal strength and does not require too high breaking resistance. Some molds are in operation Mining