公开(公告)号：JP2000186570A

公开(公告)日：2000-07-04

申请号：JP29514399

申请日：1999-10-18

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN J ,  STEPHEN D MURRAY ,  CASE D SHEFLER

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

Abstract: PROBLEM TO BE SOLVED: To provide a means to peel the ceramic heat insulation coating of a gas turbine part without corroding an adhesion coating. SOLUTION: First, most of a ceramic layer is peeled through wet type chemical treatment using a chemical solution and an autoclave device. A treatment condition is carefully controlled so that a ceramic layer is peeled without corroding or peeling an adhesion coating through the chemical treatment. Secondly, at a mechanical polishing step, all of a remaining ceramic layer and an adhesion coating having thickness higher than that of the part, where chemical properties are changed through chemical treatment, of the adhesion coating are peeled.

公开(公告)号：SG111259A1

公开(公告)日：2005-05-30

申请号：SG200406197

申请日：2004-10-14

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: B22C1/00 ,  F01D5/18 ,  B22C7/02 ,  B22C9/04 ,  B22C9/10 ,  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).