公开(公告)号：US06395359B1

公开(公告)日：2002-05-28

申请号：US08910844

申请日：1997-08-13

申请人： James E. McGrath ,  Nicholas O. Venier

发明人： James E. McGrath ,  Nicholas O. Venier

IPC分类号： E21D1552

CPC分类号： F15B21/06 ,  F15B15/1428 ,  Y10T428/1393 ,  Y10T428/1397

摘要： Corrosion resistance is provided for a power cylinder by providing a preloaded molded urethane elastomer sleeve liner within an outer cylinder of material such as a copper/nickel alloy which is subject to corrosion from long-term exposure to ambient fluids such as sea water. Preloading is preferably provided by thermal shrink fitting of the molded urethane sleeve liner to the inner bore of an outer metal cylinder. Preloading of a structure which has high structural integrity and low permeability thus effectively prevents incursion of fluids and gases at the interface between the outer cylinder and the sleeve liner as well as providing a surface which can be machined to a high degree of smoothness and against which reciprocating piston seals and wear assemblies can directly ride and which is resistant to abrasion therefrom even at high piston speeds.

摘要翻译： 通过在诸如铜/镍合金的材料的外圆筒内提供预加载的模制的聚氨酯弹性体套筒衬套来提供动力缸的耐腐蚀性，该铜/镍合金从长期暴露于诸如海水的环境流体中经受腐蚀。 优选通过模制的聚氨酯套筒衬套与外金属圆筒的内孔的热收缩配合来提供预加载。 具有高结构完整性和低渗透性的结构的预加载因此有效地防止了流体和气体在外筒和套筒衬套之间的界面处的侵入以及提供可被加工成高度平滑度的表面， 往复式活塞密封件和磨损组件可以直接骑行，即使在高活塞速度下也能抵抗磨损。