公开(公告)号：CA2545634A1

公开(公告)日：2006-11-06

申请号：CA2545634

申请日：2006-05-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PIETRUSKA NORMAN ,  SZELA EDWARD R

IPC: B23P6/00 ,  B21D51/00 ,  B21D53/78 ,  B23K3/08 ,  B23K26/34 ,  B23K26/42 ,  B23K35/38 ,  B23P15/02

Abstract: A method for forming or remanufacturing a component to have an internal spac e. A refractory metal blocking element is formed, in situ, with at least a portio n to be within the internal space. A material is added by at least one of welding, laser cladding, and diffusion brazing, the blocking element at least partially blocking entry of the material to the internal space. The blocking element is removed.

公开(公告)号：DE69732466D1

公开(公告)日：2005-03-17

申请号：DE69732466

申请日：1997-10-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： OLSON WALTER E ,  PIETRUSKA NORMAN ,  DRAGHI PETER JON

IPC: C23C24/08 ,  C23C10/04 ,  C23C10/48 ,  C23C26/00

Abstract: The invention relates to a low activity localised aluminide coating for a metallic article made by positioning a coating material, preferably in the form of a tape, on a portion of the article. The coating material comprises a binder, a halide activator, an aluminum source, and an inert ceramic material. The coating material and the article are heated in an inert atmosphere between about 1800 DEG F (982 DEG C) and about 2050 DEG F (1121 DEG C) for between about four and about seven hours thereby producing a low activity localized aluminide coating having an outward diffusion aluminide coating microstructure characterized by two distinct zones, an inner diffusion zone and an outer zone including between about 20-28 percent, by weight, aluminum.

公开(公告)号：DE69330018T2

公开(公告)日：2001-06-21

申请号：DE69330018

申请日：1993-05-06

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PIETRUSKA NORMAN ,  KURPASKA S

IPC: B23P6/04 ,  B23K35/30 ,  B23P6/00 ,  C22F1/10 ,  C23C24/08 ,  F01D5/00 ,  B22F1/00

公开(公告)号：DE60331203D1

公开(公告)日：2010-03-25

申请号：DE60331203

申请日：2003-03-07

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU ,  CETEL ALAN D ,  DRAGHI PETER J ,  PIETRUSKA NORMAN

IPC: C23C4/02 ,  F01D5/14 ,  B23P6/00 ,  C23C10/02 ,  C23G1/20 ,  F01D5/00 ,  F01D5/28 ,  F01D25/00 ,  F02C7/00

Abstract: The present invention relates to a method for repairing turbine engine components, such as vanes and blades, which have airfoils. The method broadly comprises removing oxidation debris from portions of the component by blending areas exhibiting thermal barrier coating spall and/or oxidation damage, removing a ceramic insulating layer from the component, and blending surfaces of the component where nicks, dents, and/or cracks are located. If the component has a depleted aluminum zone, the depleted zone is either removed or replenished. Further, a tip portion of the component, if damaged, is restored and tip abrasives are applied to restore the component's cutting ability. Thereafter, a ceramic coating is applied to the component.

公开(公告)号：AT457368T

公开(公告)日：2010-02-15

申请号：AT03251391

申请日：2003-03-07

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU ,  CETEL ALAN D ,  DRAGHI PETER J ,  PIETRUSKA NORMAN

IPC: C23C4/02 ,  F01D5/14 ,  B23P6/00 ,  C23C10/02 ,  C23G1/20 ,  F01D5/00 ,  F01D5/28 ,  F01D25/00 ,  F02C7/00

Abstract: The present invention relates to a method for repairing turbine engine components, such as vanes and blades, which have airfoils. The method broadly comprises removing oxidation debris from portions of the component by blending areas exhibiting thermal barrier coating spall and/or oxidation damage, removing a ceramic insulating layer from the component, and blending surfaces of the component where nicks, dents, and/or cracks are located. If the component has a depleted aluminum zone, the depleted zone is either removed or replenished. Further, a tip portion of the component, if damaged, is restored and tip abrasives are applied to restore the component's cutting ability. Thereafter, a ceramic coating is applied to the component.

公开(公告)号：DE60224898T2

公开(公告)日：2009-02-05

申请号：DE60224898

申请日：2002-05-15

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PIETRUSKA NORMAN ,  KLINE DAVID J

IPC: B23K35/30 ,  F02C7/00 ,  B23K1/19 ,  B23K31/00 ,  B23K31/02 ,  B23K35/02 ,  B23K35/14 ,  B23P6/00 ,  C22C19/05 ,  C22F1/00 ,  C22F1/10 ,  F01D5/00

Abstract: The present invention relates to a method for repairing components formed from a single crystal nickel based superalloy. The method comprises the steps of applying a repair alloy to at least one portion of a component formed from the single crystal nickel based superalloy and heating the component with the repair alloy thereon to a temperature that avoids recrystallization and repair zone incipient melting of the single crystal nickel based superalloy. Following the heating step, the component is preferably rapidly cooled and subjected to an aging treatment.

公开(公告)号：DE60224898D1

公开(公告)日：2008-03-20

申请号：DE60224898

申请日：2002-05-15

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PIETRUSKA NORMAN ,  KLINE DAVID J

IPC: B23K35/30 ,  F02C7/00 ,  B23K1/19 ,  B23K31/00 ,  B23K31/02 ,  B23K35/02 ,  B23K35/14 ,  B23P6/00 ,  C22C19/05 ,  C22F1/00 ,  C22F1/10 ,  F01D5/00

Abstract: The present invention relates to a method for repairing components formed from a single crystal nickel based superalloy. The method comprises the steps of applying a repair alloy to at least one portion of a component formed from the single crystal nickel based superalloy and heating the component with the repair alloy thereon to a temperature that avoids recrystallization and repair zone incipient melting of the single crystal nickel based superalloy. Following the heating step, the component is preferably rapidly cooled and subjected to an aging treatment.

公开(公告)号：MXPA06012305A

公开(公告)日：2007-04-27

申请号：MXPA06012305

申请日：2006-10-25

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PIETRUSKA NORMAN ,  ABRILES BETH K ,  FALKOWSKI JOHN F

IPC: C23C10/02

Abstract: La presente invencion describe un proceso para reparar grietas en un componente de motor de turbina. El proceso comprende las etapas de proporcionar un componente, preferentemente formado de un material con base de niquel de monocristal, con al menos una grieta, aplicar una composicion de aleacion de reparacion que contiene una aleacion con base de niquel de monocristal, una primera aleacion de soldadura con base de niquel, y una segunda aleacion de soldadura con base de niquel a la o las grietas, y sujetar el componente con la composicion de aleacion de reparacion aplicada a un ciclo termico para difundir la composicion de aleacion de reparacion en la o las grietas.

公开(公告)号：SG124400A1

公开(公告)日：2006-08-30

申请号：SG200600523

申请日：2006-01-25

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PIETRUSKA NORMAN ,  OLSON WALTER E ,  ABRILES BETH K ,  RUTZ DAVID A

Abstract: Novel materials and methods for repairing/reclassifying superalloy components are described herein. These materials are non-traditional blends of materials having a much higher base material content than traditional repair/reclassification materials. In embodiments used to repair/reclassify nickel-based components, these materials may comprise about 5-18.9 weight percent of a low melting point alloy and about 81.1-95 weight percent of a base material. In embodiments used to repair/reclassify cobalt-based components, these materials may comprise about 15-30 weight percent of a low melting point alloy and about 70-85 weight percent of a base material. These materials can be used to repair surface defects and/or build up worn or eroded areas of a component to meet precise dimensional and metallurgical requirements. These materials create robust repaired components having a dense, isothermally solidified structure having minimal borides and a high re-melt temperature.