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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
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.
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公开(公告)号：DE69120175T2
公开(公告)日：1997-01-30
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
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.
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公开(公告)号：CA1090170A
公开(公告)日：1980-11-25
申请号：CA312867
申请日：1978-10-06
Applicant: UNITED TECHNOLOGIES CORP
Inventor： WALKER BRYANT H , BOGARD RALPH B
Abstract: FORGING APPARATUS HAVING MEANS FOR RADIALLY MOVING BLADE DIE SEGMENTS A forging apparatus has an upper die and lower die with the lower die being positioned on a die stack with the upper die being movable by a ram, said upper and lower dies having cylindrical portions extending towards each other where the rim of the formed disc is to be located. Blade dies are positioned around the radial opening presented between the two faces of the upper and lower die as they rest on a preformed blank, said cylindrical array of blade dies being hels in position by two wires around their outer circumference and supported in the forging operation by a cylindrical back-up die; the cylindrical array of blade dies being slanted outwardly at its upper and lower edge from where they engage the cylindrical portions, forming an upper and lower annular cam surface. Ring members are positioned around both of said cylindrical sections for slidable movement thereon, said ring members being of wedge-shape cross-section so that as they are moved inwardly, when they contact said cam surfaces, they will cam said blade dies radially outward. Actuating pins extend from each of said ring members to a location above and below their respective upper and lower dies where they can be actuated by spider arms fixed to an actuating shaft which extends through their respective ram or die stack. Knockout pins are located in the upper and lower dies and are actuated by rods extending through each of the actuating shafts.
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