力士乐比例阀为德国REXROTH的产品，REXROTH不仅是世界前100强公司，也是世界著名高科技企业之一，50多年来，REXROTH集团的业务部门致力于开发专业型液压传动领域高科技产品，其产品和品牌已享誉全球。因为在世界市场上，目前没有其他的品牌能向顾客提供所有传动与控制技术，专门化与一体化并举。正因如此，博世-力士乐在液压传动、控制及移动技术领域成为了世界 性的榜样。本REXROTH为工业及工厂自动化、行走机械、以及可再生能源领域的客户提供传动、控制与移动解决方案；作为全球超过50万客户的共同选择，力士乐正不断为客户提供高质量的电控、液压、气动以及机电一体化元件和系统。REXROTH博世-力士乐气动产品大量应用在钻修设备的气路上，以及卡特匹勒与艾里逊变速箱的配合中以实现动力的操作和控制。以REXROTH博世-力士乐高性能的液压产品为依托，REXROTH向钢铁行业提供连铸、连轧等生产线的全套液压系统和液压元件。REXROTH博世-力士乐在船舶和海洋钻井平台的液压和气动传动系统及控制方面具有渊博的经验，产品应用在钻井平台、推进系统、舵机系统、发动机控制系统。

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防止措施

（1）合理控制系统温升，严格限制超载运行，定期检查维护系统保持完好状态。

（2）使用清洗剂清洗系统后，用压缩空气吹干。

（3）选购机器应采用装配工艺合理、技术和管理先进的厂家产品。这些厂家为了保证产品良好的使用，采取了许多措施如下：

A．为了保证装配场地整洁，专门建有密封无尘车间，供液压设备装配之用。采用氩弧焊打底工艺，防止管道焊接过程中产生的焊渣、飞溅物存留在管道内。

B．油箱、储能器的内壁先进行清砂、清洗，然后覆涂防腐材料，防止因内壁生锈而污染系统。

C．系统中所有的管道、阀块均采用特镀层处理，用户在现场安装时可不必再清洗，保证了产品出厂后及设备运行期间不会生锈。

D．设备出厂时，所有的管道、阀块、泵体接口都采用密封措施，采用坚固的包装箱包装，防止产品在运输、吊装、存放过程中受到污染。