公开(公告)号：CA2486052A1

公开(公告)日：2005-06-19

申请号：CA2486052

申请日：2004-10-26

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DUBE BRYAN P ,  TURKINGTON MICHAEL K ,  SPANGLER BRANDON W ,  BEALS JAMES T ,  DRAPER SAMUEL D ,  MURRAY STEPHEN D ,  SNYDER JACOB A ,  SANTELER KEITH A ,  LOPES JOSE A

IPC: F01D25/00 ,  B22C7/02 ,  B22C9/04 ,  B22C9/10 ,  B22C9/22 ,  B22C9/24 ,  F02C7/00

Abstract: A sacrificial core for forming an interior space of a part includes a cerami c core element and a first core element including a refractory metal element. The ceramic core element may be molded over the first core element or molded with assembly features permitting assembly with the first core element.

公开(公告)号：CA2484564A1

公开(公告)日：2005-04-15

申请号：CA2484564

申请日：2004-10-13

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU ,  SEETHARAMAN VENKAT ,  VERNER CARL ,  SANTELER KEITH ,  SNYDER JACOB ,  WIEDEMER JOHN ,  COTNOIR GLENN ,  PAULONIS DANIEL FRANCIS ,  BALES DANIEL A ,  MURRAY STEPHEN D ,  BEALS JAMES T ,  GUPTA DINESH ,  PERSKY JOSHUA ,  SHAH DILIP M ,  MARCIN JOHN J

IPC: B22C3/00 ,  B22C1/00 ,  B22C9/10

Abstract: A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating comprises at least one oxide and a silicon containing material. In a second embodiment, the coating comprises an oxide selected from the group consisting of calcia, magnesia, alumina, zirconia, chromic, yttria , silica, hafnia, and mixtures thereof. In a third embodiment, the coating comprises a nitride selected from the group consisting of silicon nitride, sialon, titanium nitride, and mixtures thereof. Other coating embodiments are described in the disclosure.

公开(公告)号：AT474680T

公开(公告)日：2010-08-15

申请号：AT04256369

申请日：2004-10-15

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BEALS JAMES T ,  PERSKY JOSHUA ,  SHAH DILIP M ,  SEETHARAMAN VENKAT ,  BOSE SUDHANGSHU ,  SNYDER JACOB ,  SANTELER KEITH ,  VERNER CARL ,  MURRAY STEPHEN D ,  MARCIN JOHN J ,  GUPTA DINESH ,  BALES DANIEL A ,  PAULONIS DANIEL F ,  COTNOIR GLENN ,  WIEDEMER JOHN

IPC: B22C3/00 ,  B22C9/10 ,  B22C1/00

Abstract: A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating comprises at least one oxide and a silicon containing material. In a second embodiment, the coating comprises an oxide selected from the group consisting of calcia, magnesia, alumina, zirconia, chromia, yttria, silica, hafnia, and mixtures thereof. In a third embodiment, the coating comprises a nitride selected from the group consisting of silicon nitride, sialon, titanium nitride, and mixtures thereof. Other coating embodiments are described in the disclosure.

公开(公告)号：DE602004025895D1

公开(公告)日：2010-04-22

申请号：DE602004025895

申请日：2004-12-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN J JR ,  MURRAY STEPHEN D ,  KENNARD LEA D ,  SCHOFIELD DONALD D ,  VERNER CARL R ,  HERRING MARIA A ,  RITCHIE RICHARD L ,  CLEMENS READE R ,  TURKINGTON MICHAEL K ,  NORTON DELWYN E

IPC: B22C9/04 ,  B22C13/08 ,  C23C2/00

Abstract: An apparatus for shelling an investment casting pattern (22) has a tank (26) containing a coating material (28). There are means for holding the pattern immersed in the coating material. There may be means for vibrating the pattern during immersion of the pattern and a vacuum source (126) coupled to the tank to withdraw air from at least one headspace (79) of the tank.

公开(公告)号：AT459442T

公开(公告)日：2010-03-15

申请号：AT04256360

申请日：2004-10-15

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BEALS JAMES T ,  LOPES JOSE ,  DRAPER SAMUEL D ,  MURRAY STEPHEN D ,  SPANGLER BRANDON W

IPC: B22C9/10 ,  F01D5/18 ,  B22C1/00 ,  B22C7/02 ,  B22C9/04 ,  B22C21/14 ,  F01D5/28 ,  F01D9/02 ,  F01D25/00 ,  F02C7/00

Abstract: In accordance with the present invention, a casting system is provided which broadly comprises a core (10) and a wax die (12) spaced from said core (10), a refractory metal core (14) having a first end seated within a slot (18) in the core (10) and a second end contacting the wax die (12) for positioning the core (10) relative to the wax die (12), and the refractory metal core having at least one of a mechanism for providing spring loading when closed in the wax die and a mechanism for mechanically locking the wax die to the core. The spring loading mechanism may comprise one or more spring tabs (20). The locking mechanism may comprise an end (32) of the refractory metal core (14') engaging a slot (34) in the wax die (12') (Fig 2).

公开(公告)号：DE602005010941D1

公开(公告)日：2008-12-24

申请号：DE602005010941

申请日：2005-06-13

Applicant: UNITED TECHNOLOGIES CORP

Inventor： VERNER CARL R ,  SNYDER JACOB A ,  BEALS JAMES T ,  MURRAY STEPHEN D ,  TURKINGTON MICHAEL T

IPC: B22C9/04 ,  B22C7/02 ,  B22C9/10 ,  B22C9/24

公开(公告)号：AT413937T

公开(公告)日：2008-11-15

申请号：AT05253615

申请日：2005-06-13

Applicant: UNITED TECHNOLOGIES CORP

Inventor： VERNER CARL R ,  SNYDER JACOB A ,  BEALS JAMES T ,  MURRAY STEPHEN D ,  TURKINGTON MICHAEL T

IPC: B22C9/04 ,  B22C7/02 ,  B22C9/10 ,  B22C9/24

公开(公告)号：DE69933427T2

公开(公告)日：2007-08-16

申请号：DE69933427

申请日：1999-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN J ,  MURRAY STEPHEN D ,  SHEFFLER KEITH D

IPC: C23G1/20 ,  F02C7/00 ,  F01D5/00 ,  F01D25/00

Abstract: The invention relates to a process for removing ceramic thermal barrier layers from gas turbine engine hardware. A combination of chemical and mechanical steps are used to remove the thermal barrier coating from the substrate without removing the bond coat from the substrate. In particular the process includes a caustic solution treatment in an autoclave under controlled conditions followed by a mechanical abrasion process which leaves the bond coat on the substrate in condition to receive a repair ceramic thermal barrier coating.

公开(公告)号：AU2005201580B2

公开(公告)日：2007-03-01

申请号：AU2005201580

申请日：2005-04-15

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TURKINGTON MICHAEL T ,  SNYDER JACOB A ,  VERNER CARL R ,  BEALS JAMES T ,  MURRAY STEPHEN D

IPC: B22C7/02 ,  B22C9/04 ,  B22C9/10

公开(公告)号：DE69933427D1

公开(公告)日：2006-11-16

申请号：DE69933427

申请日：1999-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN J ,  MURRAY STEPHEN D ,  SHEFFLER KEITH D

IPC: C23G1/20 ,  F02C7/00 ,  F01D5/00 ,  F01D25/00

Abstract: The invention relates to a process for removing ceramic thermal barrier layers from gas turbine engine hardware. A combination of chemical and mechanical steps are used to remove the thermal barrier coating from the substrate without removing the bond coat from the substrate. In particular the process includes a caustic solution treatment in an autoclave under controlled conditions followed by a mechanical abrasion process which leaves the bond coat on the substrate in condition to receive a repair ceramic thermal barrier coating.