DEHNSPANNEINRICHTUNG UND VERFAHREN ZU DEREN HERSTELLUNG

    公开(公告)号:EP3827917A1

    公开(公告)日:2021-06-02

    申请号:EP19212256.2

    申请日:2019-11-28

    发明人: RETZBACH, Thomas

    IPC分类号: B23B31/30 B23K20/12 B23P15/00

    摘要: Die Erfindung betrifft eine Dehnspanneinrichtung mit einem Grundkörper (2) und einer Dehnbüchse (5), die unter Bildung einer Druckkammer (8) in den Grundkörper (2) eingesetzt ist oder diesen umgibt, wobei die Druckkammer (8) unter elastischer Verformung der Dehnbüchse (5) mit einem Hydraulikmittel beaufschlagbar ist, wobei die Dehnbüchse (5) an dem vorderen axialen Endbereich (16) und/oder an dem hinteren axialen Endbereich (17) der Druckkammer (8) über eine Reibschweißverbindung (14) an dem Grundkörper (2) stoffschlüssig fixiert ist.

    FRICTION WELDED COMPOSITE TURBINE DISC ROTOR FOR A TURBOMACHINE

    公开(公告)号:EP3822457A1

    公开(公告)日:2021-05-19

    申请号:EP20202441.0

    申请日:2020-10-16

    摘要: A rotor (121) for a turbomachine and a method of manufacturing the same. The method includes providing a lug (232) with a lug body (266) and an interface material (268) disposed on the lug body. The method also includes friction welding (235) the lug to a hub member (230) via the interface material to define a projected structure (212) for an outer radial area of a disc assembly (124) of the rotor. The projected structure is configured to support a first side (125) of a rotor blade (126) of the rotor in cooperation with a second projected structure of the disc assembly supporting a second side (127) of the rotor blade. The lug body and the hub member are made from different materials.

    CUTTING INSERT AND MANUFACTURING METHOD THEREOF

    公开(公告)号:EP3819051A1

    公开(公告)日:2021-05-12

    申请号:EP19830021.2

    申请日:2019-07-02

    摘要: A cutting insert comprises: a body; and a blade fixed to the body and made of a polycrystalline cubic boron nitride including 98.5% by volume or more of cubic boron nitride, the blade having a rake face and a flank face, the rake face and the flank face meeting each other and thus forming a ridge line which serves as a cutting edge, the rake face being provided with a land surface extending along the cutting edge, and a chip breaker disposed on a side opposite to the cutting edge with the land surface therebetween and also having a recess contiguous to the land surface.