公开(公告)号：US5405176A

公开(公告)日：1995-04-11

申请号：US196665

申请日：1994-02-15

申请人： Henry W. Babel ,  Phillip L. Fuson ,  Colin D. Chickles ,  Cherie A. Jones ,  Raymond H. Anderson

发明人： Henry W. Babel ,  Phillip L. Fuson ,  Colin D. Chickles ,  Cherie A. Jones ,  Raymond H. Anderson

IPC分类号： B21D39/04 ,  F16L13/14 ,  F16L35/00

CPC分类号： F16L13/146 ,  B21D39/04 ,  Y10T29/49885 ,  Y10T29/49934

摘要： A relatively impervious mechanical seal is formed between the outer surface of a tube and the inside surface of a mechanical fitting of a high pressure fluid or hydraulic system by applying a very thin soft metal layer onto the outer surface of the hard metal tube and/or inner surface of the hard metal fitting, prior to swaging the fitting onto the tube. The thickness of such thin metal layer is independent of the size of the tube and/or fittings. Many metals and alloys of those metals exhibit the requisite softness, including silver, gold, nickel, tin, platinum, indium, rhodium and cadmium. Suitably, the coating is about 0.0025 millimeters (0.10 mils) in thickness. After swaging, the tube and fitting combination exhibits very low leak rates on the order or 10.sup.-8 cubic centimeters per second or less as meaured using the Helium leak test.

摘要翻译： 在管的外表面和高压流体或液压系统的机械配件的内表面之间通过将非常薄的软金属层施加到硬金属管的外表面上和/或 在将配件模锻到管上之前，硬金属配件的内表面。 这种薄金属层的厚度与管和/或配件的尺寸无关。 这些金属的许多金属和合金表现出必需的柔软度，包括银，金，镍，锡，铂，铟，铑和镉。 适当地，涂层厚度约为0.0025毫米（0.10密耳）。 在模锻之后，管和配件组合使用氦泄漏测试进行测量，显示出非常低的泄漏率或10-8立方厘米每秒或更少的泄漏率。