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    12.
    发明专利
    未知

    公开(公告)号：FR2468424A1

    公开(公告)日：1981-05-08

    申请号：FR8023269

    申请日：1980-10-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MACNITT DONALD GEORGE JR ,  WALKER BRYANT HARDING

    IPC: B21J5/02 ,  B21J9/02 ,  B21J13/02 ,  B21K1/36 ,  B21K3/04 ,  B21J5/06

    Abstract: The present invention provides a technique for improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integrally with a central disk structure from which the appendages extend. In one effective embodiment incorporating concepts of the present invention, the forging dies include a stationary die 26 and a moveable die 28 which are mounted on a common axis and a plurality of arcuate die segments 30 which are adjacently placed in cylindrical array about the stationary and moveable dies. The arcuate die segments form cavities of the inverse geometry of the appendages to be formed and are interlocked to prevent tilting of the segments in the die package. A collar 40 extends from the stationary die to interlocking engagement with a channel 46 in the inwardly facing surface of each arcuate die segment.

    14.
    发明专利
    未知

    公开(公告)号：BE872539A

    公开(公告)日：1979-03-30

    申请号：BE192151

    申请日：1978-12-05

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： WALKER BRYANT HARDING ,  BOGARD RALPH BROMLEY

    IPC: B21J5/02 ,  B21J13/02 ,  B21K1/32 ,  B21K1/36 ,  B21J

    Abstract: 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 held 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.

    18.
    发明专利
    未知

    公开(公告)号：IT1134081B

    公开(公告)日：1986-07-24

    申请号：IT2562680

    申请日：1980-10-29

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MACNITT DONALD GEORGE JR ,  WALKER BRYANT HARDING

    IPC: B21J5/02 ,  B21J9/02 ,  B21J13/02 ,  B21K1/36 ,  B21K3/04 ,  B21J

    Abstract: The present invention provides a technique for improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integrally with a central disk structure from which the appendages extend. In one effective embodiment incorporating concepts of the present invention, the forging dies include a stationary die 26 and a moveable die 28 which are mounted on a common axis and a plurality of arcuate die segments 30 which are adjacently placed in cylindrical array about the stationary and moveable dies. The arcuate die segments form cavities of the inverse geometry of the appendages to be formed and are interlocked to prevent tilting of the segments in the die package. A collar 40 extends from the stationary die to interlocking engagement with a channel 46 in the inwardly facing surface of each arcuate die segment.

    19.
    发明专利
    未知

    公开(公告)号：NO852546L

    公开(公告)日：1986-01-31

    申请号：NO852546

    申请日：1985-06-25

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： WALKER BRYANT HARDING

    IPC: B22F5/04 ,  B22F7/06 ,  B23K20/00 ,  B23K20/02 ,  B23K20/22 ,  B23K20/227 ,  B23P15/00 ,  C22F1/00 ,  C22F1/10 ,  F01D5/28 ,  F01D5/34 ,  B23K ,  B21K

    Abstract: A component, such as a turbine disk, made from a metal or metal alloy which has been processed to display superplastic properties at elevated temperatures, is diffusion bonded to a component or components, such as turbine blades, made from another metal or metal alloy, by disposing the components in a press with the surfaces to be bonded in mating contact. Moisture and oxygen are removed from between the surfaces. Heat and pressure are then applied, such as by forging at an elevated temperature or by hot isostatic pressing, to cause superplastic deformation of at least one of the components at the bonding surfaces. The heat and pressure are held sufficiently long to diffusion bond the surfaces. The new integral assembly is then heat treated to obtain desired properties. Consistently good diffusion bonds are achieved by this method.

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