粉末冶金材料应用于液压元件的时间并不长,但发展很快。在国外,如日本等国家中的液压泵及液压阀中,很多主要零件均采用了粉末冶金材料。在国内,近些年来,由于“四人帮”的破坏,这项科研工作受到很大干扰,甚至已取得的成果也得不到应用和推广,损失很大。实践表明,液压元件选用粉末冶金材料,是改善液压元件的某些性能,提高寿命,降低成本,促进液压元件高速发展的一条值得重视的措施,它对代替青铜、某些合金钢材料,有着明显的效果。这里介绍叶片泵中的粉末冶金定子,供参考。定子是叶片泵中的一个重要零件。在很 Powder metallurgy materials used in hydraulic components of the time is not long, but the rapid development. In foreign countries, such as Japan and other countries in the hydraulic pump and hydraulic valve, many of the major components are used powder metallurgy materials. In our country, in recent years, due to the sabotage of the “gang of four,” this scientific research work has been greatly disturbed and even the achievements already made have not been applied and promoted. The loss has been enormous. Practice shows that the selection of hydraulic components of powder metallurgy materials, hydraulic components to improve some of the performance, increase life expectancy, reduce costs and promote the rapid development of hydraulic components of a worthy measure, it instead of bronze, some alloy steel materials, has obvious Effect. Here is the introduction of vane pump powder metallurgy stator for reference. The stator is an important part of the vane pump. Very much