论文部分内容阅读
众所周知,活塞式压缩机的可靠性在很大程度上取决于气阀其中包括环形阀片的可靠性。使用过程中,阀片承受循环弯曲和冲击载荷,因此阀片有50％是疲劳破坏而折断的。可以通过选取材料和热处理工况以确保阀片在弯曲和循环冲击载荷条件下具有最高疲劳强度来提高阀片的可靠性。30CrMnSiA钢是这样材料中的一种,对于该种材料来说,上述性能的最佳值是在硬度为HRC48-52条件下。但是,在运转过程中得知,具有这种硬度的阀片通常要比具有较低硬度的阀片寿命短。在莫斯科
It is well known that the reliability of piston compressors depends to a large extent on the reliability of the valve including the annular valve. During use, the valve plate withstands cyclic bending and impact loads, so 50% of the valve plate is broken by fatigue and broken. The reliability of the valve plate can be improved by selecting materials and heat treatment conditions to ensure that the valve plate has the highest fatigue strength under flexural and cyclic impact loading conditions. The 30CrMnSiA steel is one of these materials, and for this material the best value for the above properties is at a hardness of HRC 48-52. However, it is known during operation that a valve plate with such a hardness generally has a shorter life span than a valve plate with a lower hardness. In Moscow