公开(公告)号：DE69329546D1

公开(公告)日：2000-11-16

申请号：DE69329546

申请日：1993-07-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SNYDER R ,  MARCHITTO EDWARD ,  DRAGHI J ,  REED M

IPC: B24B5/01 ,  B24B49/02 ,  B24B51/00 ,  G05B19/401 ,  B24B47/22

Abstract: A method for removing a predetermined amount of material from the inner surface of a circular article which deviates from a true circular configuration. The outer surface of the article is touch probed to determine its true location in space, and the data are stored in a computer memory. These data are then compared to engineering design data to establish the location of the surface to which material removal is desired. A control computer compares the measured data with the design data, and sends commands to the machine control system, causing the machine to remove the excess material down to the desired dimension. Any deviations from circular are compensated for by moving the article radially relative to the cutting tool as the article moves circumferentially relative to the cutting tool.

公开(公告)号：DE69807892D1

公开(公告)日：2002-10-17

申请号：DE69807892

申请日：1998-06-19

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DRAGHI J ,  SHURMAN J ,  SIMARD A ,  WRABEL PETER

IPC: C23C4/02 ,  C23C10/60 ,  C23C26/00

Abstract: A method for preparing a protectively coated, apertured article to be recoated reduces the likelihood that the apertures will become constricted as a consequence of subsequent recoating. The invention, described in the context of a gas turbine engine blade (12) having transpiration cooling passages (34), includes the step of diffusing an auxiliary coating (52) into an existing coating (28) and into the exposed substrate material (26) at the periphery of the passages to form a diffusion zone (54). The blade is then subjected to a stripping agent so that the diffusion zone (54) any undiffused existing coating, and any undiffused auxiliary coating are removed. The method causes a compensatory enlargement of the mouth (44) of each passage so that excess coating that accumulates in the passage mouths during subsequent recoating does not restrict the flow capacity of the passages.

公开(公告)号：DE69329546T2

公开(公告)日：2001-03-01

申请号：DE69329546

申请日：1993-07-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SNYDER R ,  MARCHITTO EDWARD ,  DRAGHI J ,  REED M

IPC: B24B5/01 ,  B24B49/02 ,  B24B51/00 ,  G05B19/401 ,  B24B47/22

Abstract: A method for removing a predetermined amount of material from the inner surface of a circular article which deviates from a true circular configuration. The outer surface of the article is touch probed to determine its true location in space, and the data are stored in a computer memory. These data are then compared to engineering design data to establish the location of the surface to which material removal is desired. A control computer compares the measured data with the design data, and sends commands to the machine control system, causing the machine to remove the excess material down to the desired dimension. Any deviations from circular are compensated for by moving the article radially relative to the cutting tool as the article moves circumferentially relative to the cutting tool.

公开(公告)号：DE69807892T2

公开(公告)日：2003-01-16

申请号：DE69807892

申请日：1998-06-19

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DRAGHI J ,  SHURMAN J ,  SIMARD A ,  WRABEL PETER

IPC: C23C4/02 ,  C23C10/60 ,  C23C26/00

Abstract: A method for preparing a protectively coated, apertured article to be recoated reduces the likelihood that the apertures will become constricted as a consequence of subsequent recoating. The invention, described in the context of a gas turbine engine blade (12) having transpiration cooling passages (34), includes the step of diffusing an auxiliary coating (52) into an existing coating (28) and into the exposed substrate material (26) at the periphery of the passages to form a diffusion zone (54). The blade is then subjected to a stripping agent so that the diffusion zone (54) any undiffused existing coating, and any undiffused auxiliary coating are removed. The method causes a compensatory enlargement of the mouth (44) of each passage so that excess coating that accumulates in the passage mouths during subsequent recoating does not restrict the flow capacity of the passages.