
油温过高会对油品的寿命产生严重影响,对油品和液压系统的危害如下:(1)使油品氧化,黏度上升,黏性阻力增大,会导致执行元件动作迟缓,引起系统发热升温;(2)加速油中添加剂的消耗,影响油品抗氧、防锈、抗磨等性能,造成系统液压元件磨损;(3)油品氧化后,生成酸性物质,对液压元件造成腐蚀;(4)氧化生成油泥等胶质物质,堵塞阻尼小孔和缝隙式阀口等,导致阀件出现卡涩。因此,一旦液压系统出现油温过高,需查明原因。对于受到高温影响的液压油,不能盲目使用,而应先对油品进行全面检测,再根据检测结果决定是否继续使用。
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