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    • 8. 发明授权
    • Method of sealing interfaces of bearing surfaces to steel barrels of
piston pumps
    • 将轴承表面的接口密封到活塞泵钢桶的方法
    • US4445258A
    • 1984-05-01
    • US342943
    • 1982-01-26
    • George R. CaldwellEdward J. Gallagher
    • George R. CaldwellEdward J. Gallagher
    • B22D19/08F01B3/00F04B1/20B22D19/00
    • F04B1/2035B22D19/08F01B3/0052F05B2230/41F05C2201/0478Y10T29/49272
    • The method of contemporaneously sealing interfaces of bearing surfaces for valve faces and cylinder linings in a steel rotary cylindrical barrel having a plurality of longitudinal bores extending through the barrel longitudinally from one end to the other, each of the bores having a restricted diameter intermediate portion connecting a valve surface area at one end of the barrel with a cylinder area extending to the other end. An insert of bearing material is placed in both ends of the bore and a cap secured over a lower end adjoining the cylinder bore. A removable carbon hot top is placed over the other end of the barrel. The barrel and its assembly is heated in a metallurgical furnace for 90 minutes at 1925.degree. F., disposed vertically, with the cap at the bottom and is then removed from the furnace and cooled with the cap resting on a bronze pedestal to cause the bearing material to slowly solidify from the bottom up, and to cause gases to rise through the restricted area of the bore as the barrel cools. When the temperature is below 1000.degree. F., the hot top is removed to permit solidification of the bearing material in the upper valve area.
    • 在具有多个纵向孔的钢旋转圆柱形筒中同时密封用于阀面和气缸衬套的表面的界面的同时密封方法,所述多个纵向孔从一端纵向延伸穿过另一端,每个孔具有限制直径的中间部分连接 在桶的一端处的阀表面区域具有延伸到另一端的气缸区域。 轴承材料的插入件放置在孔的两端,并且固定在邻近气缸孔的下端上的盖。 可移动的碳热顶部放置在桶的另一端上。 将桶及其组件在冶金炉中在1925°F加热90分钟,垂直放置,盖子在底部,然后从炉中取出并冷却,盖子搁置在青铜基座上,使轴承 材料从底部向上缓慢固化,并且当桶冷却时使气体通过孔的限制区域上升。 当温度低于1000°F时,除去热顶以允许轴承材料在上阀区域内固化。