中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

2876 records (took 0.024 seconds)

    Flow control of filler alloy
    271.
    发明授权
    Flow control of filler alloy 失效
    填料合金流动控制

    公开(公告)号：US3750266A

    公开(公告)日：1973-08-07

    申请号：US3750266D

    申请日：1972-08-25

    Applicant: ATOMIC ENERGY COMMISSION

    Inventor： HIKIDO T ,  MOYER C

    IPC: B23K1/00 ,  B23K1/20 ,  B23K35/22 ,  B23K31/02

    CPC classification number: B23K35/224 ,  B23K1/00 ,  B23K1/20 ,  B23K2201/06 ,  B23K2203/05

    Abstract: A method for controlling the flow of filler alloy used in the brazing of metals such as stainless steel. The method consists of applying on the surface of the metal a layer of metal which acts as a barrier to the filler alloy, thereby confining the alloy to the desired area to be brazed and thus preventing its flow over undesired areas of the surface of the metal. The flow control metal may, for example, be applied to the surface by scribing, plating or vapor-deposition depending on the type of flow control metal utilized.

    Abstract translation: 用于控制用于金属如不锈钢的钎焊中的填充合金的流动的方法。 该方法包括在金属表面上施加一层金属，作为对填料合金的阻挡层，从而将合金限制在要钎焊的所需区域上，从而防止其流过金属表面的不期望的区域 。 流动控制金属可以例如根据所使用的流动控制金属的类型通过划线，电镀或气相沉积施加到表面。

    Method of attaching a carbide ring to a steel tube
    273.
    发明授权
    Method of attaching a carbide ring to a steel tube 失效
    将碳化硅环连接到钢管的方法

    公开(公告)号：US3585710A

    公开(公告)日：1971-06-22

    申请号：US3585710D

    申请日：1968-12-30

    Applicant: PAN AMERICAN PETROLEUM CORP

    Inventor： WILDER LAWRENCE B ,  VINCENT RENIC P

    IPC: B23K1/20 ,  B23K31/02

    CPC classification number: B23K1/20 ,  B23K2201/06 ,  Y10T29/49911

    Abstract: THIS IS A METHOD OF ATTACHING A CARBIDE RING TO THE OUTSIDE OF A STEEL TUBE SUCH AS A VALVE STEM. IT OVERCOMES THE PROBLEM CAUSED BY THE DIFFERENCE IN THERMAL COEFFICIENT OF EXPANSION BETWEEN CARBIDE AND STEEL. IN THE PREFERRED EMBODIMENT OF THE METHOD EMPLOYED, MOLTEN BRAZING COMPOUND AT A HIGH TEMPERATURE, E.G., 1,700*F., IS MELTED IN THE CLEARANCE SPACE BETWEEN THE CARBIDE RING AND THE STEEL TUBE. THE CARBIDE RING IS ALLOWED TO COOL TO ABOUT 1,000*F. WHILE THE STEEL TUBE IS KEPT HOT TO ABOUT 1,500* F. BY APPLYING HEAT TO THE INSIDE. A STEEL PLUG IS THEN PLACED INSIDE THE STEEL TUBE ADJACENT THE CARBIDE RING. THIS STEEL PLUG HAS BEEN SIZED TO HAVE A DIAMETER, AT ROOM TEMPERATURE, EQUAL TO THAT OF THE INSIDE OF THE STEEL TUBE IN ITS EXPANDED POSITION AT 1,000*F. AFTER THE PLUG IS INSERTED, HEAT IS NO LONGER APPLIED AND THE CARBIDE RING CONTINUES TO SHRINK AND TO DISPLACE THE EXCESS SEMI-MOLTEN BRAZING COMPOUND. THE STEEL TUBE ALSO STARTS CONTRACTING UNTIL IT CONTACTS THE PLUG. THE PLUG WHICH WAS PUT INTO THE TUBE AT ROOM TEMPERATURE, E.G., 80*F., HAS HEAT TRANSFERRED TO IT FROM THE STEEL TUBE AND THE PLUG ITSELF STARTS TO INCREASE IN SIZE. THE STEEL TUBE WHEN IT CONTACTS THE PLUG WILL BE AT LEAST AT 1,000*F. AND IS SOFT ENOUGH TO YIELD EASILY. AS THE TEMPERATURE OF THE STEEL PLUG INCREASES, IT CONTINUES TO EXPAND AND CAUSES ADDITIONAL YIELDING OF THE STEEL TUBE WHICH YIELDS SUFFICIENTLY SO THAT WHEN IT AND THE CARBIDE RING COOL, THEY DO NOT SEPARATE.

Patent Agency Ranking