公开(公告)号：SG104974A1

公开(公告)日：2004-07-30

申请号：SG200203981

申请日：2002-07-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HOWARD S DUCOTEY JR ,  ROBERT J ZUBER ,  PETER J DRAGHI

IPC: B23H9/10 ,  B23H9/14 ,  B23K31/00 ,  B23P6/00 ,  C23C4/02 ,  F01D5/18 ,  C23C4/18 ,  C23C28/04 ,  F01D5/00 ,  F01D5/28 ,  F02C7/00

Abstract: A method is disclosed for repairing defects in a gas turbine component 10 that comprises a substrate 58 and an existing coating 44 on the substrate 58. The article 10 includes cooling holes 18 having a predetermined air flow requirement and an outer shaped portion 52 and an inner metering portion 60. The method comprises removing the existing coating 44 and recoating the surface of the article with a nonoriginal coating. After the nonoriginal coating is applied onto the component, the cooling holes 18 that meet a predetermined inspection criteria are reworked to remove the excess nonoriginal coating deposited in the outer shaped portion 52 of the cooling holes 18. The reworking is done by receiving an electrode 52, having only a shaped portion with a preselected shape, in the outer shaped portion 50 of the cooling holes 18 thus restoring the cooling holes to the predetermined air flow requirement.

公开(公告)号：SG115764A1

公开(公告)日：2005-10-28

申请号：SG200501605

申请日：2005-03-16

Applicant: UNITED TECHNOLOGIES CORP

Inventor： RAMON M VELEZ JR ,  PETER J DRAGHI

IPC: B08B1/04 ,  B08B9/00 ,  B08B9/087 ,  F01D25/00 ,  F02C7/00

Abstract: Foreign material is dislodged from a hard to reach region of an object by passing a rigid (24) elongated tubular guide in close proximity to the hard to reach region. The upper tip of the guide is bent so that it can be directed at the hard to reach region and a wire (32) is passed through the guide into the hard to reach region. The lower portion of the wire that extends outwardly from the bottom of the guide and the wire is rotated at a speed sufficient to dislodge unwanted foreign material from the hard to reach region.

公开(公告)号：SG114632A1

公开(公告)日：2005-09-28

申请号：SG200306046

申请日：2003-10-14

Applicant: UNITED TECHNOLOGIES CORP

Inventor： RAMON M VELEZ JR ,  PETER J DRAGHI

IPC: B08B3/02 ,  B08B3/12 ,  B08B9/02 ,  B08B9/032 ,  F01D25/00 ,  F02C7/00 ,  F02C7/30 ,  F01D5/00

Abstract: A cleaning fluid dispensing probe (22), which has a longitudinal axis and a nozzle, extends into an internal cavity (40) within an engine component (42). The nozzle is oriented at a predetermined angle with respect to the longitudinal axis of the probe. An independent claim is also included for an engine component internal cavity cleaning method.

公开(公告)号：SG104998A1

公开(公告)日：2004-07-30

申请号：SG200301110

申请日：2003-03-04

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F01D5/14 ,  B23P6/00 ,  C23C10/02 ,  C23G1/20 ,  F01D5/28 ,  F01D25/00 ,  F02C7/00 ,  B23P15/00

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.