5.
    发明专利
    未知

    公开(公告)号:NO159816B

    公开(公告)日:1988-10-31

    申请号:NO834230

    申请日:1983-11-18

    Inventor: ATHEY ROY L

    Abstract: Stress relief for the rim of an integrally bladed rotor made from a forging preform is provided by forming a plurality of radially extending circumferentially spaced-apart slots around the periphery of the preform. The slots are forged closed in a subsequent forming step. An oxide layer on the slot surfaces prevents the surfaces from bonding together when forged closed. The blades are formed between slots during the forging or by machining after forging.

    7.
    发明专利
    未知

    公开(公告)号:NO167405C

    公开(公告)日:1991-10-30

    申请号:NO853929

    申请日:1985-10-04

    Abstract: A method is described for producing metallic articles, especially turbine disks, which have a hot-worked structure in one region and a warmworked structure in another region and thereby have properties which differ in different regions. The method comprises an initial hot-working step, an intermediate heat treatment step and a final warm-working step.

    9.
    发明专利
    未知

    公开(公告)号:IT8323814D0

    公开(公告)日:1983-11-22

    申请号:IT2381483

    申请日:1983-11-22

    Inventor: ATHEY ROY L

    Abstract: Stress relief for the rim of an integrally bladed rotor made from a forging preform is provided by forming a plurality of radially extending circumferentially spaced-apart slots around the periphery of the preform. The slots are forged closed in a subsequent forming step. An oxide layer on the slot surfaces prevents the surfaces from bonding together when forged closed. The blades are formed between slots during the forging or by machining after forging.

    10.
    发明专利
    未知

    公开(公告)号:FR2536316B1

    公开(公告)日:1991-08-23

    申请号:FR8318469

    申请日:1983-11-21

    Inventor: ATHEY ROY L

    Abstract: Stress relief for the rim of an integrally bladed rotor made from a forging preform is provided by forming a plurality of radially extending circumferentially spaced-apart slots around the periphery of the preform. The slots are forged closed in a subsequent forming step. An oxide layer on the slot surfaces prevents the surfaces from bonding together when forged closed. The blades are formed between slots during the forging or by machining after forging.

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