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    ROTARY FRICTION WELDING
    1.
    发明申请
    ROTARY FRICTION WELDING 审中-公开

    公开(公告)号：US20180029158A1

    公开(公告)日：2018-02-01

    申请号：US15654048

    申请日：2017-07-19

    申请人： ROLLS-ROYCE plc

    发明人： Simon E. BRAY ,  Andrew R. WALPOLE

    IPC分类号： B23K20/12

    CPC分类号： B23K20/129 ,  B23K20/12 ,  B23K33/006 ,  B23K2101/001

    摘要： A rotary friction welding process is provided, including: providing a first axisymmetric workpiece having a first annular weld surface, and a second axisymmetric workpiece having a second annular weld surface; and rotationally welding the workpeices. On the longitudinal section through the aligned workpieces, each of the first and second annular weld surfaces is flanked by radially inner and outer side surfaces, the first weld surface and its side surfaces being shaped to thermally match the second weld surface and its side surfaces across a line of initial contact of the first and second weld surfaces such the heat flows from the weld at all the side surfaces are substantially equal.

    ELECTROCHEMICAL POLISHING OF NON-UNIFORM FEATURES
    2.
    发明申请
    ELECTROCHEMICAL POLISHING OF NON-UNIFORM FEATURES 审中-公开

    公开(公告)号：US20170355032A1

    公开(公告)日：2017-12-14

    申请号：US15598666

    申请日：2017-05-18

    申请人： ROLLS-ROYCE PLC

    发明人： Daniel CLARK ,  Andrew R. WALPOLE

    IPC分类号： B23H7/18 ,  B23H3/08 ,  B23H3/04

    CPC分类号： B23H7/18 ,  B23H3/04 ,  B23H3/08 ,  B23H9/10 ,  C25F3/16 ,  C25F7/00

    摘要： A method of controlling a working gap between one or more cathodic tools and an anodic workpiece in an electrochemical material dissolution process, the method comprising: providing a cathodic tool and an anodic workpiece defining a working gap therebetween, the cathodic tool and the workpiece being at least partially immersed in a conductive electrolyte solution; providing a negative electrical potential to the cathodic tool; monitoring one or more of the electrical potential, current, current density and charge between the cathodic tool and the anode to determine the working gap between the cathodic tool and the anode; and, controlling one or more process parameters to maintain one or more of the working gap and electrochemical working conditions between the cathodic tool and anodic workpiece at a targeted value.

    ROTARY FRICTION WELDING
    3.
    发明申请
    ROTARY FRICTION WELDING 审中-公开

    公开(公告)号：US20170129048A1

    公开(公告)日：2017-05-11

    申请号：US15298046

    申请日：2016-10-19

    申请人： ROLLS-ROYCE plc

    发明人： Gemma RAVEN ,  Simon E. BRAY ,  Andrew R. WALPOLE

    IPC分类号： B23K20/12 ,  B23K20/22 ,  B23K20/24

    CPC分类号： B23K20/129 ,  B23K20/12 ,  B23K20/22 ,  B23K20/24 ,  B23K2101/001 ,  B23K2101/04 ,  B23K2103/18

    摘要： A method for welding together pieces which form a curved or angled end product using a friction welding process. The method includes: providing first and second pieces which together define the end product geometry, each piece including an end product geometry portion and a sacrificial weld portion, the sacrificial weld portion forming a dog-leg relative to the end product geometry portion and terminating in a planar weld interface surface. The pieces are arranged with their planar weld interface surfaces together at a weld surface interface and the sacrificial weld portions in coaxial alignment. Mechanical friction is applied between the planar weld interface surfaces sufficient to plastically deform the sacrificial weld portions. An axial force is applied along the co-axis of the sacrificial weld portions sufficient to upset the sacrificial weld portions and bring together the end product geometry portions. The sacrificial geometry portions are removed to provide the end product.

    FRICTION WELDING
    6.
    发明申请
    FRICTION WELDING 审中-公开

    公开(公告)号：US20170246707A1

    公开(公告)日：2017-08-31

    申请号：US15420627

    申请日：2017-01-31

    申请人： ROLLS-ROYCE PLC

    发明人： Simon E. BRAY ,  Andrew R. WALPOLE ,  John P. E. FORSDIKE ,  Gavin J. BAXTER

    IPC分类号： B23K20/12 ,  F01D5/28

    CPC分类号： B23K20/129 ,  B23K20/12 ,  B23K20/1225 ,  B23K20/123 ,  B23K20/24 ,  B23K2101/001 ,  F01D5/28 ,  F05D2220/32 ,  F05D2300/133 ,  F05D2300/175

    摘要： A method for friction welding of inter alia coarse grain superalloy components, involving conditioning a shear zone of components to be welded by; a) pre-determining temperature profile for which the material of the shear zone of the components approaches viscoplasticity but does not undergo undesirable phase transformations, b) introducing friction at one or both surfaces of the components to be welded to provide a pre-defined quantum of energy sufficient to generate a peak temperature of the temperature profile at that surface whilst simultaneously applying pressure to the surfaces which is below a pressure which will cause upset at the surface, c) withdrawing the friction and/or pressure allowing the heat to disperse by conduction through the shear zone; d) after the temperature at the surface falls below peak temperature, repeating steps b) and c); and repeating step d) as necessary until the pre-determined temperature gradient is achieved throughout the shear zone.

    FRICTION WELDING PROCESS
    8.
    发明申请
    FRICTION WELDING PROCESS 审中-公开

    公开(公告)号：US20180056437A1

    公开(公告)日：2018-03-01

    申请号：US15685081

    申请日：2017-08-24

    申请人： ROLLS-ROYCE plc

    发明人： Simon E. BRAY ,  Andrew R. WALPOLE ,  Robin WILSON

    IPC分类号： B23K20/12

    CPC分类号： B23K20/1205 ,  B23K20/12 ,  B23K20/129 ,  B23K33/00 ,  B23K2101/001 ,  B23K2103/26

    摘要： A workpiece for use with a friction welding process comprises a weld surface. The weld surface comprises a central ridge surface extending along the weld surface, with the central ridge surface being flanked on either side respectively by a first pyramidal surface and a second pyramidal surface. The first pyramidal surface subtends a first pyramidal angle with the central ridge surface, and the second pyramidal surface subtends a second pyramidal angle with the central ridge surface. The first pyramidal surface is further flanked by a third pyramidal surface, and the second pyramidal surface is further flanked by a fourth pyramidal surface, with the third pyramidal surface subtending a third pyramidal angle with the central ridge surface, and the fourth pyramidal surface subtending a fourth pyramidal angle with the central ridge surface. Each of the third pyramidal angle and the fourth pyramidal angle is less than 90°.

    FRICTION WELDING
    9.
    发明申请
    FRICTION WELDING 审中-公开
    摩擦焊接

    公开(公告)号：US20160228979A1

    公开(公告)日：2016-08-11

    申请号：US14991349

    申请日：2016-01-08

    申请人： ROLLS-ROYCE PLC

    发明人： Simon E. BRAY ,  Andrew R. WALPOLE

    IPC分类号： B23K20/12

    CPC分类号： B23K20/122 ,  B23K20/028 ,  B23K20/1205 ,  B23K20/129 ,  B23K20/24 ,  B23K33/00 ,  B23K2101/001

    摘要： A friction welding process includes: providing a first workpiece having a first weld surface, and a second workpiece having a second weld surface; aligning the workpieces with the weld surfaces facing each other, moving one workpiece relative to the other workpiece, and engaging the first and second weld surfaces such that the movement raises the temperature at the weld surfaces to create a weld interface; and ceasing the movement and allowing the weld interface to cool to weld the workpieces together at the interface. The first workpiece has a plurality of flash removal channels formed in and/or adjacent to the first weld surface. The channels provide pathways for ejection of material from the weld interface during welding.

    摘要翻译： 摩擦焊接工艺包括：提供具有第一焊接表面的第一工件和具有第二焊接表面的第二工件; 将工件与彼此面对的焊接表面对准，使一个工件相对于另一个工件移动，并且使第一和第二焊接表面接合，使得移动提高焊接表面处的温度以产生焊接界面; 并停止移动并允许焊接界面冷却，以将界面处的工件焊接在一起。 第一工件具有形成在第一焊接表面中和/或邻近第一焊接表面的多个闪蒸除去通道。 这些通道在焊接过程中提供了从焊接界面喷射材料的途径。