公开(公告)号：DE60208629D1

公开(公告)日：2006-04-06

申请号：DE60208629

申请日：2002-04-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SMITH MICHAEL P ,  STANLEY JANET M ,  MURPHY DAVID S ,  BAUMGARTEN ROBERT W ,  DEMICHAEL THOMAS ,  MAYERS STEPHEN L

IPC: F01D5/00 ,  F01D5/30 ,  B23K9/00 ,  B23K9/23 ,  B23K9/235 ,  B23K20/12 ,  B23K31/00 ,  B23K103/14 ,  B23P6/00 ,  B23P15/00 ,  B23P15/02 ,  C21D1/09 ,  C21D1/58 ,  C21D9/00 ,  C21D9/50 ,  C22C14/00 ,  C22F1/00 ,  C22F1/18 ,  F01D5/34 ,  F02C7/00 ,  F04D29/32

Abstract: The present invention relates to a method for fabricating an integrally bladed rotor which comprises providing a hub section (12), preferably formed from a titanium based alloy, and welding an airfoil (14), also preferably formed from a titanium based alloy, to the hub section. The method further comprises partially aging and cooling the hub section prior to welding and aging the airfoil and the weld joint between the airfoil and the hub section subsequent to welding. The post welding aging step is preferably carried out using a novel encapsulated local airfoil heating device having a plurality of heating elements woven into a jacket made from a high temperature cloth material. The method of the present invention may also be used to repair integrally bladed rotors.

公开(公告)号：DE69120175D1

公开(公告)日：1996-07-18

申请号：DE69120175

申请日：1991-09-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BAUMGARTEN ROBERT W ,  ROBERTSON JOHN M ,  BOGARD RALPH B ,  DUNN BRIAN T

IPC: B23K20/00 ,  B23K20/233 ,  B23K33/00 ,  B23P6/00 ,  F01D5/00 ,  F01D5/30

Abstract: In the repair or replacement of vane assembly retaining lugs, a replacement lug of a wrought alloy is solid state bonded to the vane assembly in place of the previous retaining lug. The existing lug is first removed from the assembly to leave a stub portion which is machined to form a surface to which a replacement lug may be bonded. A replacement lug blank is then positioned adjacent the stub face, a vacuum drawn in that region and a bonding force applied, the interface between the stub and replacement blank being heated locally. After bonding the assembly is heat treated and the replacement lug machined to a desired configuration.

公开(公告)号：DE69102600D1

公开(公告)日：1994-07-28

申请号：DE69102600

申请日：1991-08-12

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BAUMGARTEN ROBERT W ,  ROBERTSON JOHN M

IPC: B21J1/00 ,  B21K25/00 ,  B23K20/02 ,  B23P6/00 ,  C22F1/00 ,  C22F1/10 ,  C22F1/18 ,  F01D5/00 ,  F02C7/00

Abstract: A hole in a metal component such as a gas turbine rotor flange (3) of superalloy or titaniurn is repaired by enlarging the hole to a uniform diameter (5), inserting a plug (6), of the same or similar material and heat treatment in the enlarged hole (5) and applying sufficient pressure (9,10) to the plug and heating the plug and the surrounding material to forge join the plug and the walls of the hole whereby a fully recrystallized joint interface is achieved between the plug and the walls of the hole. Excess material is removed.