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公开(公告)号：DE60124042T2
公开(公告)日：2007-05-03
申请号：DE60124042
申请日：2001-08-22
Applicant: UNITED TECHNOLOGIES CORP
Inventor： ABRILES BETH , RUTZ DAVID A , MANIS BRYAN W
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.
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公开(公告)号：AT343451T
公开(公告)日：2006-11-15
申请号：AT01402211
申请日：2001-08-22
Applicant: UNITED TECHNOLOGIES CORP
Inventor： ABRILES BETH KWIATKOWSKI , RUTZ DAVID A , MANIS BRYAN W
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.
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公开(公告)号：SG122957A1
公开(公告)日：2006-06-29
申请号：SG200508449
申请日：2005-11-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BELOUSOV IGOR V , MALASHENKO IGOR S , SERGIYENKO GREGORY A , SHELKOVOI ANATOLI N , MEMMEN ROBERT L , RUTZ DAVID A , KINSTLER MONIKA D
Abstract: A method for depositing a first material on a substrate (108) includes providing the substrate (108) in a deposition chamber. A molten body (164) is formed between the substrate and a source of the first material by melting one or more second materials. A flow of the first material is passed through the molten body (164) and from the molten body (164) to the substrate (108) as a vapor flow. An essentially non-expending portion of the molten body comprises an alloy having a melting temperature below a melting temperature of the first material.
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公开(公告)号：ZA879684B
公开(公告)日：1988-09-28
申请号：ZA879684
申请日：1987-12-28
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SCHAEFER ROBERT P , ROBERT P SCHAEFER , RUTZ DAVID A , DAVID A RUTZ , LEE EDWARD , EDWARD LEE , JOHNSON EDWARD L , EDWARD L JOHNSON
IPC: B24D3/00 , B22F3/10 , B24D3/06 , C22C1/10 , C22C32/00 , C23C24/10 , F01D5/20 , F01D11/00 , F16J15/10 , C04B , C01B , B28B , F02K
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.
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公开(公告)号：AU8303387A
公开(公告)日：1988-06-30
申请号：AU8303387
申请日：1987-12-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SCHAEFER ROBERT P , LEE EDWARD , RUTZ DAVID A , JOHNSON EDWARD L
IPC: B24D3/00 , B22F3/10 , B24D3/06 , C22C1/10 , C22C32/00 , C23C24/10 , F01D5/20 , F01D11/00 , F16J15/10 , C22C29/00 , C22C29/02 , C22C29/12 , C22C29/16 , B22F7/08
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.
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Patent Agency Ranking
公开(公告)号：DE602005026362D1
公开(公告)日：2011-03-31
申请号：DE602005026362
申请日：2005-12-19
Applicant: UNITED TECHNOLOGIES CORP
Inventor： DEBICCARI ANDREW , HAYES JEFFREY D , RUTZ DAVID A
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公开(公告)号：SG139613A1
公开(公告)日：2008-02-29
申请号：SG2007023435
申请日：2007-03-28
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MALLEY DAVID R , MOOR JAMES J , RUTZ DAVID A
Abstract: BRAZING REPAIRS A first component is bulk brazed to a second component. The bulk braze joint is inspected. Responsive to the inspection locating a defect site, the joint is laser brazed at the defect site.
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公开(公告)号：SG137746A1
公开(公告)日：2007-12-28
申请号：SG2007025570
申请日：2007-04-05
Applicant: UNITED TECHNOLOGIES CORP
Inventor： RUTZ DAVID A , KINSTLER MONIKA D
Abstract: A Ti-based coating may have embedded defects. The defects may impart one or more structural weakness to the coating and coated part. The coating is subjected to a burnishing process to impart a residual compressive stress to mitigate one or more of these structural weaknesses.
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公开(公告)号：CA2590506A1
公开(公告)日：2007-12-02
申请号：CA2590506
申请日：2007-05-29
Applicant: UNITED TECHNOLOGIES CORP
Inventor： RUTZ DAVID A , KINSTLER MONIKA D
Abstract: A Ti-based coating may have embedded defects. The defects may impart one or more structural weakness to the coating and coated part. The coating is subjected to a burnishing process to impart a residual compressive stress to mitigate one or more of these structural weaknesses.
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公开(公告)号：CA2353374A1
公开(公告)日：2002-02-28
申请号：CA2353374
申请日：2001-07-23
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KWIATKOWSKI ABRILES BETH , RUTZ DAVID A , MANIS BRYAN W
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 loo 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 2300ÀFfor a time period from about 1.0 minute to about 30.0 minutes.
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