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    ROTARY FRICTION WELDING METHOD ; CORRESPONDING ROTOR DISC AND ROTOR ASSEMBLY
    8.
    发明公开
    ROTARY FRICTION WELDING METHOD ; CORRESPONDING ROTOR DISC AND ROTOR ASSEMBLY 审中-公开
    旋转摩擦焊接方法; 相应的转子盘和转子总成

    公开(公告)号：EP3292939A1

    公开(公告)日：2018-03-14

    申请号：EP17179912.5

    申请日：2017-07-06

    申请人： Rolls-Royce plc

    发明人： Bray, Simon ,  Walpole, Andrew

    IPC分类号： B23K20/12 ,  B23P15/04 ,  B23K33/00 ,  F01D5/06 ,  F04D29/18 ,  B23K101/00

    CPC分类号： B23K20/129 ,  B23K20/12 ,  B23K20/22 ,  B23K33/006 ,  B23K2101/001 ,  B23K2103/18 ,  B23P15/006 ,  B23P15/04 ,  F01D5/06 ,  F01D5/063 ,  F04D29/023 ,  F04D29/321 ,  F05D2220/32 ,  F05D2230/10 ,  F05D2230/239 ,  F05D2230/53 ,  F05D2300/6032

    摘要： The present invention provides a rotary friction welding process including: providing an outer axisymmetric workpiece (32) for machining into a rim portion of a rotor disc of a multi-stage rotor assembly of a gas turbine engine, the outer workpiece (32) having a front first annular weld surface (35) at a radially inward extent of the outer workpiece (32) and a rear first annular weld surface (37) at a radially inward extent of the outer workpiece (32); providing a front inner axisymmetric workpiece (33) for machining into a front diaphragm of the rotor disc, the front inner workpiece (33) having a front second annular weld surface (36) at a radially outward extent of the front inner workpiece (33); providing a rear inner axisymmetric workpiece (34) for machining into a rear diaphragm of the rotor disc, the rear inner workpiece (34) having a rear second annular weld surface (38) at a radially outward extent of the rear inner workpiece (34); aligning the outer workpiece (32) and the front inner workpiece (34) on a common axis (X--X) with the front first and second weld surfaces (35, 36) facing each other, rotating one of the outer and front inner workpieces (32, 33) about the axis (X--X) relative to the other aligned workpiece, engaging the aligned workpieces (32, 33) at the front first and second weld surfaces (35, 36) such that the rotation raises the temperature at the front weld surfaces (35, 36) to create a front weld interface, and ceasing the rotation and allowing the front weld interface to cool to weld the outer and the front inner workpieces (32, 33) together at the front interface. The same steps are achieved for joining the outer workpiece (32) with the rear inner workpiece (34). On a longitudinal section through the aligned workpieces (32, 33, 34), the front first and second annular weld surfaces (35, 36) are inclined from the radial direction and are substantially parallel to each other such that the cooled front weld interface is correspondingly inclined from the radial direction, and the rear first and second annular weld surfaces (37, 38) are inclined from the radial direction and are substantially parallel to each other such that the cooled rear weld interface is correspondingly inclined from the radial direction.

    摘要翻译： 本发明提供了一种旋转摩擦焊接工艺，包括：提供用于加工成燃气涡轮发动机的多级转子组件的转子盘的轮缘部分的外轴对称工件（32），所述外工件（32）具有 在所述外部工件（32）的径向内部范围处的前部第一环形焊接表面（35）和在所述外部工件（32）的径向内部范围处的后部第一环形焊接表面（37）; 提供用于加工到转子盘的前部膜片的前部内轴对称工件（33），前部内部工件（33）具有在前部内部工件（33）的径向向外范围处的前部第二环形焊接表面（36） ; 提供用于加工到转子盘的后部膜片的后部内部轴对称工件34，后部内部工件34在后部内部工件34的径向向外范围处具有后部第二环形焊接表面38， ; 在前部第一和第二焊接表面（35,36）彼此面对的情况下，在公共轴线（X-X）上对准外部工件（32）和前部内部工件（34），使外部和内部工件 工件（32,33）围绕轴线（X-X）相对于另一个对准的工件，在对准的工件（32,33）在前部第一和第二焊接表面（35,36）处接合，使得旋转提高 在前部焊接表面（35,36）产生前部焊接界面，并且停止旋转并允许前部焊接界面冷却以将外部工件和前部内部工件（32,33）焊接在前部界面处。 用于将外部工件（32）与后部内部工件（34）接合的步骤相同。 在通过对准的工件（32,33,34）的纵向截面上，前部第一和第二环形焊接表面（35,36）从径向方向倾斜并且基本彼此平行，使得冷却的前部焊接界面 相应地从径向倾斜，并且后第一和第二环形焊接表面（37,38）从径向方向倾斜并且基本彼此平行，使得冷却的后焊接界面相应地从径向方向倾斜。