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    33.
    发明专利
    未知

    公开(公告)号：AT498709T

    公开(公告)日：2011-03-15

    申请号：AT05257797

    申请日：2005-12-19

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DEBICCARI ANDREW ,  HAYES JEFFREY D ,  RUTZ DAVID A

    IPC: C23C24/04 ,  B23P6/00

    Abstract: A method for repairing components (10) comprises the steps of providing a component (10) having a defect to be repaired and depositing an aluminum containing repair material over an affected area (24) on a surface (25) of the component (10) so that the repair material plastically deforms and bonds to the affected area (24) upon impact with the affected area (24) and thereby covers the affected area (24).

    34.
    发明专利
    未知

    公开(公告)号：DE60124042D1

    公开(公告)日：2006-12-07

    申请号：DE60124042

    申请日：2001-08-22

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ABRILES BETH KWIATKOWSKI ,  RUTZ DAVID A ,  MANIS BRYAN W

    IPC: B23K35/14 ,  F02C7/00 ,  B23K35/00 ,  B23K35/02 ,  B23K35/30 ,  B23K35/36 ,  B23K35/363 ,  B23P6/04

    Abstract: The present invention relates to a self cleaning braze paste which is used in the repair of gas turbine engines. The braze paste comprises lithium fluoride in an amount sufficient to act as a flux which allows the braze material to flow into a crack or void in a part to be repaired up to an amount where there is no residual lithium or fluoride in the crack or void, preferably up to about 20% by volume, a gel binder in an amount up to about 15% by volume, and the balance comprising at least one of a nickel braze alloy and a cobalt braze alloy. In a preferred embodiment, the lithium fluoride is present in an amount from about 10% to about 15% by volume. The braze material of the present invention may be applied in a paste form or, alternatively, in a paint or tape form. A method for cleaning and repairing a braze joint is also disclosed. The method broadly comprises the steps of forming a braze material containing lithium fluoride in the above mentioned range, a gel binder in an amount up to about 15% by volume, and the balance comprising at least one of a nickel braze alloy or a cobalt braze alloy, applying the braze material to the braze joint, and heating the braze material to a temperature in the range of from about a temperature sufficient to cause the lithium fluoride to volatize up to about 2300 DEG F for a time period from about 1.0 minute to about 30.0 minutes.

    Structural repair using cold sprayed aluminum materials
    35.
    发明专利
    Structural repair using cold sprayed aluminum materials 未知

    公开(公告)号：SG123724A1

    公开(公告)日：2006-07-26

    申请号：SG200508093

    申请日：2005-12-14

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DEBICCARI ANDREW ,  HAYNES JEFFREY D ,  RUTZ DAVID A

    Abstract: A method for repairing components (10) comprises the steps of providing a component (10) having a defect to be repaired and depositing an aluminum containing repair material over an affected area (24) on a surface (25) of the component (10) so that the repair material plastically deforms and bonds to the affected area (24) upon impact with the affected area (24) and thereby covers the affected area (24).

    37.
    发明专利
    未知

    公开(公告)号：DE3788116D1

    公开(公告)日：1993-12-16

    申请号：DE3788116

    申请日：1987-12-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHAEFER ROBERT P ,  RUTZ DAVID A ,  LEE EDWARD ,  JOHNSON EDWARD L

    IPC: B24D3/00 ,  B22F3/10 ,  B24D3/06 ,  C22C1/10 ,  C22C32/00 ,  C23C24/10 ,  F01D5/20 ,  F01D11/00 ,  F16J15/10

    Abstract: An abrasive material (22) comprised of a metal matrix (26) and evenly distributed ceramic particulates (24), is made by mixing powder metal with the ceramic powder and heating to a temperature sufficient to melt most, but not all of the powder. In this way the ceramic does not float to the top of the material, yet a dense material is obtained. A nickel superalloy matrix will have at least some remnants of the original powder metal structure, typically some equiaxed grains, along with a fine dendritic structure, thereby imparting desirable high temperature strength when the abrasive material is applied to the tips of blades of gas turbine engines. Preferred matrices have a relatively wide liquidus-solidus temperature range, contain a melting point depressant, and a reactive metal to promote adhesion to the ceramic.

    38.
    发明专利
    未知

    公开(公告)号：DE3785166D1

    公开(公告)日：1993-05-06

    申请号：DE3785166

    申请日：1987-12-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHAEFER ROBERT P ,  RUTZ DAVID A ,  LEE EDWARD ,  JOHNSON EDWARD L

    IPC: F01D5/20

    Abstract: A gas turbine engine blade has an abrasive material tip with a fused superalloy matrix and evenly distributed ceramic particulate. The matrix will have a desirable metallurgical structure characterized by fine dendrites and remnants of the original powder metal structure from which it was made. Due to the fusion of the tip, the peripheral edge will tend to be curved. To lessen the effect of thermal strains on such an abrasive tip, a sheath of a superalloy, such as a portion of the turbine blade substrate, extends along the side of the abrasive. The sheath may be present only in the thicker leading edge part of the blade airfoil.

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