HYDRAULIC OIL FORMULATION AND METHOD TO IMPROVE SEAL SWELL
    6.
    发明申请
    HYDRAULIC OIL FORMULATION AND METHOD TO IMPROVE SEAL SWELL 审中-公开
    液压油配方及改善密封圈的方法

    公开(公告)号:WO2010021643A3

    公开(公告)日:2010-06-17

    申请号:PCT/US2009001982

    申请日:2009-03-31

    Abstract: In one embodiment, a hydraulic oil with favorable seal swell is disclosed. The hydraulic oil comprises, a major amount of base stock, an antiwear additive, a phosphorous containing additive wherein the phosphorous comprises at least 10 ppm and less than 2500 ppm of the hydraulic oil, the hydraulic oil contains less than 200 ppm zinc and less than 100 ppm sulfur, wherein the ratio of phosphorous to metal ratio is chosen to obtain a favorable seal swell performance with at least a ratio of 0.5 and less than 20. In a second embodiment, a method to improve seal swell is disclosed. In a third embodiment, a method of formulating an oil to improve seal swell performance is disclosed. In a fourth embodiment, a method of improving seal swell is disclosed. The method uses a system cleaner for hydraulic systems comprising CaSo4.

    Abstract translation: 在一个实施例中,公开了具有良好的密封膨胀的液压油。 液压油包括大量基础油,抗磨添加剂,含磷添加剂,其中磷含有至少10ppm且小于2500ppm的液压油,液压油含有少于200ppm的锌并且小于 选择100ppm硫,其中选择磷与金属比的比例以获得0.5至小于20的比例的良好的密封膨胀性能。在第二实施方案中,公开了一种改善密封膨胀的方法。 在第三实施例中,公开了一种配制油以提高密封膨胀性能的方法。 在第四实施例中,公开了一种改善密封膨胀的方法。 该方法使用包含CaSo4的液压系统的系统清洁器。

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