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    22.
    发明专利
    未知

    公开(公告)号：NO873964L

    公开(公告)日：1988-03-28

    申请号：NO873964

    申请日：1987-09-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DRAGHI PETER JON ,  ARRIGONI JOHN PETER

    IPC: B22F7/04 ,  B22F7/06 ,  B23K35/02 ,  B23P6/00 ,  F01D5/00 ,  F01D

    Abstract: A gas turbine vane (1) is subject to distortion and wear during operation or repair which results in an increase in the spacing between successive vanes (6 and 7) which define nozzle gas flow areas (8 and 9). During refurbishment, the nozzle spacing must be returned to the original dimension to insure optimum turbine performance. A build up of alloy in the wear area is accomplished by controllably applying layers of a tape (12) of uniform thickness to the vane. The tape includes a mixture of a binder and an alloy powder, which is compatible with the substrate alloy, with the mixture formed into a sheet of uniform thickness and having an adhesive backing. After applying the tape in layers to a desired thickness, the vane is heated to a temperature at which the binder and adhesive decompose and the alloy in the tape diffusion bonds with the substrate alloy. Utilization of this process reduces the cost of refurbishing used turbine vanes and avoids hot forming or bending processes which could damage the vanes.

    24.
    发明专利
    未知

    公开(公告)号：NO873964D0

    公开(公告)日：1987-09-23

    申请号：NO873964

    申请日：1987-09-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DRAGHI PETER JON ,  ARRIGONI JOHN PETER

    IPC: B22F7/04 ,  B22F7/06 ,  B23K35/02 ,  B23P6/00 ,  F01D5/00 ,  F01D

    Abstract: A gas turbine vane (1) is subject to distortion and wear during operation or repair which results in an increase in the spacing between successive vanes (6 and 7) which define nozzle gas flow areas (8 and 9). During refurbishment, the nozzle spacing must be returned to the original dimension to insure optimum turbine performance. A build up of alloy in the wear area is accomplished by controllably applying layers of a tape (12) of uniform thickness to the vane. The tape includes a mixture of a binder and an alloy powder, which is compatible with the substrate alloy, with the mixture formed into a sheet of uniform thickness and having an adhesive backing. After applying the tape in layers to a desired thickness, the vane is heated to a temperature at which the binder and adhesive decompose and the alloy in the tape diffusion bonds with the substrate alloy. Utilization of this process reduces the cost of refurbishing used turbine vanes and avoids hot forming or bending processes which could damage the vanes.

    25.
    发明专利
    未知

    公开(公告)号：IT8721993D0

    公开(公告)日：1987-09-23

    申请号：IT2199387

    申请日：1987-09-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DRAGHI PETER JOHN ,  ARRIGONI JOHN PETER

    IPC: B22F7/04 ,  B22F7/06 ,  B23K35/02 ,  B23P6/00 ,  F01D5/00

    Abstract: A gas turbine vane (1) is subject to distortion and wear during operation or repair which results in an increase in the spacing between successive vanes (6 and 7) which define nozzle gas flow areas (8 and 9). During refurbishment, the nozzle spacing must be returned to the original dimension to insure optimum turbine performance. A build up of alloy in the wear area is accomplished by controllably applying layers of a tape (12) of uniform thickness to the vane. The tape includes a mixture of a binder and an alloy powder, which is compatible with the substrate alloy, with the mixture formed into a sheet of uniform thickness and having an adhesive backing. After applying the tape in layers to a desired thickness, the vane is heated to a temperature at which the binder and adhesive decompose and the alloy in the tape diffusion bonds with the substrate alloy. Utilization of this process reduces the cost of refurbishing used turbine vanes and avoids hot forming or bending processes which could damage the vanes.

    MINIMUM CHORD GAUGE
    26.
    发明专利
    MINIMUM CHORD GAUGE 未知

    公开(公告)号：GB2127547B

    公开(公告)日：1986-02-05

    申请号：GB8321782

    申请日：1983-08-12

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ARRIGONI JOHN PETER

    IPC: G01B3/30 ,  G01B5/02

    Abstract: A gauge for measuring the chord length across an airfoil at a plurality of locations along the span is disclosed. Concepts ensuring accurate measurement notwithstanding deviations of the airfoil contour from design conditions are discussed. Floating gauge plates 46 locate the local position of the airfoil leading edge. A notch 58 in each plate marks the minimum acceptable chord length.

    27.
    发明专利
    未知

    公开(公告)号：DE3005778A1

    公开(公告)日：1980-11-20

    申请号：DE3005778

    申请日：1980-02-15

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ARRIGONI JOHN PETER

    IPC: F01D25/00 ,  B23P6/00 ,  F01D5/00 ,  F02C7/00 ,  F01D5/22

    Abstract: A method and apparatus for restoring airseals on gas turbine blades and vanes. A worn or damaged airseal is removed by abrasive belt grinding perpendicular to its length to create a stub. Then a piece of material is joined to the stub, as by welding. Next the airseal weldment is contoured using abrasive belting, perpendicular to the weldment length. The invention is particularly advantageous for the repair of components having two airseals of different dimensions. A single two-position fixture is usable to remove old airseals and to refinish airseal weldments. Refinishing is accomplished with a contoured belt; the contour is chosen to be intermediate, but within the tolerance of, the contours of the first and second airseals. As a result, airseals are economically restored in short runs.

    REPAIRING TURBINE BLADE AIRSEALS
    28.
    发明专利
    REPAIRING TURBINE BLADE AIRSEALS 未知

    公开(公告)号：AU5549080A

    公开(公告)日：1980-08-28

    申请号：AU5549080

    申请日：1980-02-13

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ARRIGONI JOHN PETER

    IPC: F01D25/00 ,  B23P6/00 ,  F01D5/00 ,  F02C7/00 ,  B21K3/04

    Abstract: A method and apparatus for restoring airseals on gas turbine blades and vanes. A worn or damaged airseal is removed by abrasive belt grinding perpendicular to its length to create a stub. Then a piece of material is joined to the stub, as by welding. Next the airseal weldment is contoured using abrasive belting, perpendicular to the weldment length. The invention is particularly advantageous for the repair of components having two airseals of different dimensions. A single two-position fixture is usable to remove old airseals and to refinish airseal weldments. Refinishing is accomplished with a contoured belt; the contour is chosen to be intermediate, but within the tolerance of, the contours of the first and second airseals. As a result, airseals are economically restored in short runs.

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