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随着液压技术的发展,液压传动装置已广泛地应用于冶金、矿山、工程、起重运输、航空、航海等部门。另一方面由于机械工业各部门不断向高速、重载方向发展,液压元件的性能参数也日益趋向于高压力和高转速。因此对液压元件的可靠性和使用寿命提出了愈来愈高的要求。大量的使用实践证明,液压元件特别是工作环境比较恶劣的某些液压元件,其实际使用
With the development of hydraulic technology, hydraulic transmission device has been widely used in metallurgy, mining, engineering, lifting and transportation, aviation, navigation and other departments. On the other hand, due to the continuous development of various sectors of the machinery industry towards high-speed and heavy-load, the performance parameters of hydraulic components tend to be increasingly high pressure and high speed. Therefore, the reliability and service life of hydraulic components put forward higher and higher requirements. The use of a large number of proven, hydraulic components, especially some of the more harsh working conditions of hydraulic components, the actual use of