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    METHOD FOR REPLACING ROTOR BLADE OF ROTOR WITH INTEGRATED BLADE
    1.
    发明专利
    METHOD FOR REPLACING ROTOR BLADE OF ROTOR WITH INTEGRATED BLADE 失效

    公开(公告)号：JPH10153101A

    公开(公告)日：1998-06-09

    申请号：JP32395997

    申请日：1997-11-11

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BAUMGARTEN ROBERT W ,  COOLIDGE KENNETH D

    IPC: B23P6/00 ,  F01D5/00 ,  F01D5/30 ,  F01D5/34 ,  F01D25/00 ,  F02C7/00

    Abstract: PROBLEM TO BE SOLVED: To facilitate replacement of a rotor blade by cutting off a defective blade leaving a blade stub part, forming a platform on the rest thereof, and then, integrating a replacement blade by joining with a platform of the replacement blade, and carrying out finishing by cutting an excess part of the joining part. SOLUTION: In the case where a defective blade of a rotor with an integrated blade is repaired, a part of the defect blade, namely, a blade stub 34 is left, and the other is eliminated. A radial direction outer surface 42 of the blade stub 34 is mechanically worked to a prescribed flat form in a specified direction in relation to a disk 12. After a blade repair die 24 is installed on the blade stub 34, a hydraulic cylinder 41 is operated, die half bodys 26, 28 are fixed to the blade stub 34, and the platform 46 is formed integratedly with the blade stub 34 in this condition. After that, a platform 52 of a replacement blade 50 is joined with the platform 46, and then, an excess part is eliminated, and repair is completed.

    METHOD FOR REPLACING ROTOR BLADE OF ROTOR WITH INTEGRAL BLADE
    2.
    发明专利
    METHOD FOR REPLACING ROTOR BLADE OF ROTOR WITH INTEGRAL BLADE 失效

    公开(公告)号：JPH10317906A

    公开(公告)日：1998-12-02

    申请号：JP32396097

    申请日：1997-11-11

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BAUMGARTEN ROBERT W ,  LANDY B HELB

    IPC: F01D5/30

    Abstract: PROBLEM TO BE SOLVED: To provide a method for easily replacing a rotor blade of a rotor with an integral blade. SOLUTION: In a method for replacing a rotor blade 14 of a rotor 10 with an integral blade having a disk 12, the rotor blade 14 is detached in such a manner as to leave a blade stub portion 15 extending outward from the disk 12 and having a front edge, a rear edge, a suction part and a pressure part. Subsequently, a collar 24 having a hollow portion for receiving the blade stub portion 15 is prepared, and further, the blade stub portion 15 is contained inside the hollow portion of the collar 24, so that the collar 24 is connected to the blade stub portion 15. Consequently, a platform is formed of the blade stub portion 15 and the collar 24. Finally, another rotor blade to be replaced is connected to the platform.

    9.
    发明专利
    未知

    公开(公告)号：DE69120175T2

    公开(公告)日：1997-01-30

    申请号：DE69120175

    申请日：1991-09-04

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BAUMGARTEN ROBERT W ,  ROBERTSON JOHN M ,  BOGARD RALPH B ,  DUNN BRIAN T

    IPC: B23K20/00 ,  B23K20/233 ,  B23K33/00 ,  B23P6/00 ,  F01D5/00 ,  F01D5/30

    Abstract: In the repair or replacement of vane assembly retaining lugs, a replacement lug of a wrought alloy is solid state bonded to the vane assembly in place of the previous retaining lug. The existing lug is first removed from the assembly to leave a stub portion which is machined to form a surface to which a replacement lug may be bonded. A replacement lug blank is then positioned adjacent the stub face, a vacuum drawn in that region and a bonding force applied, the interface between the stub and replacement blank being heated locally. After bonding the assembly is heat treated and the replacement lug machined to a desired configuration.

    10.
    发明专利
    未知

    公开(公告)号：DE69102600T2

    公开(公告)日：1995-02-09

    申请号：DE69102600

    申请日：1991-08-12

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BAUMGARTEN ROBERT W ,  ROBERTSON JOHN M

    IPC: B21J1/00 ,  B21K25/00 ,  B23K20/02 ,  B23P6/00 ,  C22F1/00 ,  C22F1/10 ,  C22F1/18 ,  F01D5/00 ,  F02C7/00

    Abstract: A hole in a metal component such as a gas turbine rotor flange (3) of superalloy or titaniurn is repaired by enlarging the hole to a uniform diameter (5), inserting a plug (6), of the same or similar material and heat treatment in the enlarged hole (5) and applying sufficient pressure (9,10) to the plug and heating the plug and the surrounding material to forge join the plug and the walls of the hole whereby a fully recrystallized joint interface is achieved between the plug and the walls of the hole. Excess material is removed.

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