BY-03-31.5-70,BY-03-31.5-90,比例先导式溢流阀

在液压系统中，因液体流速变化引起压力下降而产生气泡的现象叫做“气穴”。气穴和气蚀使液压系统工作性能恶化，可靠性降低。
综上所述：液压阀的机械性失效除加工制造因素外，主要与管理有关，因此不要等到液压系统无法正常工作时才重视。平时要更多地预判断、预处理，将液压阀失效产生的设备故障去除在萌芽状态。
液压阀是液压传动系统或液压控制系统中用来控制液体压力、流量和方向的元件，其可分为通断式开关阀、伺服阀和比例阀三种，每一种都能发挥特定作用，如果您对它们的具体作用感兴趣，那就赶紧阅读本文一探究竟吧......
对所有的液压系统而言，均是由液压执行元件（包括液压缸与液压马达）按*要求的工作顺序以实现循环动作，对外输出一定的功率（压力F×流量S），完成相应的动作，平稳且协调的持续运行，这就必须对液压系统的压力流量和液流方向加以控制和调节。
在液压系统中，目前可控制和调节压力、流量、液流方向的方式分两种：一种是容积式控制（泵控），其次是节流式控制（阀控），本期我们就节流式控制（阀控）予以讲解。作为一种以节流的方式以控制液压系统的压力、流量和液流方向的液压元件，可分为三大类，即普通的通断式开关阀、伺服阀与比例阀


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