公开(公告)号：JP2003155935A

公开(公告)日：2003-05-30

申请号：JP2002242854

申请日：2002-08-23

Applicant: UNITED TECHNOLOGIES CORP

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

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

Abstract: PROBLEM TO BE SOLVED: To provide a method for repairing defects in a gas turbine component comprising a substrate and a coating existing on the substrate. SOLUTION: An article includes cooling holes having a predetermined air flow requirement and an outer shaped portion and an inner metering portion. The method comprises removing the existing coating and recoating the surface of the article with a non-original coating. After the non-original coating is applied onto the component, the cooling holes that meet predetermined inspection criteria are reworked to remove the excess non-original coating deposited in the outer shaped portion of the cooling holes. The reworking is done by receiving an electrode, having only a shaped portion with a pre-selected shape, in the outer shaped portion of the cooling holes thus restoring the cooling holes to the predetermined air flow requirement.

公开(公告)号：DE60217590D1

公开(公告)日：2007-03-08

申请号：DE60217590

申请日：2002-06-21

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F01D5/00 ,  F01D5/18 ,  B23H9/10 ,  B23H9/14 ,  B23K31/00 ,  B23P6/00 ,  C23C4/02 ,  C23C4/18 ,  C23C28/04 ,  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：DE60217590T3

公开(公告)日：2013-10-10

申请号：DE60217590

申请日：2002-06-21

Applicant: UNITED TECHNOLOGIES CORP

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

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

公开(公告)号：DE60217590T2

公开(公告)日：2007-10-11

申请号：DE60217590

申请日：2002-06-21

Applicant: UNITED TECHNOLOGIES CORP

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

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