公开(公告)号：ZA8709684B

公开(公告)日：1988-09-28

申请号：ZA8709684

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B24D3/00 ,  B22F3/10 ,  B24D3/06 ,  C22C1/10 ,  C22C32/00 ,  C23C24/10 ,  F01D5/20 ,  F01D11/00 ,  F16J15/10 ,  C04B ,  C01B ,  B28B ,  F02K

CPC classification number: C22C32/00 ,  B22F1/0003 ,  B22F3/1035 ,  C22C1/1036 ,  F01D5/20

Abstract: An abrasive material (22) comprised of a metal matrix (26) and evenly distributed ceramic particulates (24), is made by mixing powder metal with the ceramic powder and heating to a temperature sufficient to melt most, but not all of the powder. In this way the ceramic does not float to the top of the material, yet a dense material is obtained. A nickel superalloy matrix will have at least some remnants of the original powder metal structure, typically some equiaxed grains, along with a fine dendritic structure, thereby imparting desirable high temperature strength when the abrasive material is applied to the tips of blades of gas turbine engines. Preferred matrices have a relatively wide liquidus-solidus temperature range, contain a melting point depressant, and a reactive metal to promote adhesion to the ceramic.

公开(公告)号：ZA879684B

公开(公告)日：1988-09-28

申请号：ZA879684

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B24D3/00 ,  B22F3/10 ,  B24D3/06 ,  C22C1/10 ,  C22C32/00 ,  C23C24/10 ,  F01D5/20 ,  F01D11/00 ,  F16J15/10 ,  C04B ,  C01B ,  B28B ,  F02K

Abstract: An abrasive material (22) comprised of a metal matrix (26) and evenly distributed ceramic particulates (24), is made by mixing powder metal with the ceramic powder and heating to a temperature sufficient to melt most, but not all of the powder. In this way the ceramic does not float to the top of the material, yet a dense material is obtained. A nickel superalloy matrix will have at least some remnants of the original powder metal structure, typically some equiaxed grains, along with a fine dendritic structure, thereby imparting desirable high temperature strength when the abrasive material is applied to the tips of blades of gas turbine engines. Preferred matrices have a relatively wide liquidus-solidus temperature range, contain a melting point depressant, and a reactive metal to promote adhesion to the ceramic.

公开(公告)号：SG185868A1

公开(公告)日：2012-12-28

申请号：SG2012008645

申请日：2012-02-07

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HERBERT A CHIN ,  ROBERT P SCHAEFER ,  ANDREW L HAYNES ,  DAVID G ALEXANDER ,  SONIA A MARTINEZ ,  WANGEN LIN

Abstract: WELDING Ti-6246 INTEGRALLY BLADED ROTOR AIRFOILSA method is disclosed for welding a first metal to a Ti-6246 alloy airfoil. The method consists of depositing weld metal by fusion welding and reshaping the airfoil to predetermined dimensions. A post weld heat treatment is applied to relieve residual stresses. Surface treatment such as laser shock peening introduces residual surface compressive stresses to enhance the mechanical integrity of the airfoil.Fig. 1

公开(公告)号：SG180088A1

公开(公告)日：2012-05-30

申请号：SG2011072790

申请日：2011-10-05

Applicant: UNITED TECHNOLOGIES CORP

Inventor： JAMES J MOOR ,  HERBERT A CHIN ,  GREG CZELADKO ,  GENE A DANKO ,  ANDREW L HAYNES ,  WANGEN LIN ,  VINCENT NEVINS ,  ROBERT P SCHAEFER ,  EBERHARDT PRIVITZER

Abstract: An example method of attaching an airfoil for an integrally bladed rotorincludes placing a support collar in an installed position around at least a leading edge and trailing edge of an airfoil stub to be repaired in an integrally bladed rotor. The support collar and the airfoil stub together have a midline that is positioned between opposing, laterally outer surfaces of the airfoil stub when the support collar is in theinstalled position. The method performs linear friction welding to add a replacement airfoil to the airfoil stub.Figure 1

公开(公告)号：ZA879685B

公开(公告)日：1988-09-28

申请号：ZA879685

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B22F20060101 ,  C04B20060101 ,  C22C20060101 ,  F02K20060101 ,  B22F ,  C04B ,  C22C ,  F02K

公开(公告)号：ZA8709685B

公开(公告)日：1988-09-28

申请号：ZA8709685

申请日：1987-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHAEFER ROBERT P ,  ROBERT P SCHAEFER ,  RUTZ DAVID A ,  DAVID A RUTZ ,  LEE EDWARD ,  EDWARD LEE ,  JOHNSON EDWARD L ,  EDWARD L JOHNSON

IPC: B22F20060101 ,  C04B20060101 ,  C22C20060101 ,  F02K20060101 ,  B22F ,  C04B ,  C22C ,  F02K