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    METHOD AND APPARATUS FOR SUPPORTING WAX PATTERN DURING INVESTMENT CASTING
    4.
    发明公开
    METHOD AND APPARATUS FOR SUPPORTING WAX PATTERN DURING INVESTMENT CASTING 审中-公开

    公开(公告)号：EP4180147A1

    公开(公告)日：2023-05-17

    申请号：EP22203193.2

    申请日：2022-10-24

    申请人： General Electric Company

    发明人： MAUGHAN, James Rollins ,  HERZLINGER, Jason ,  WILLSON, Patrick Daniel

    IPC分类号： B22C9/04 ,  B22C7/02 ,  B22C9/24

    摘要： An approach for supporting a wax pattern (12) during investment casting. The approach described herein forms a support structure (30) to support the wax pattern (12) during investment casting. The support structure (30) has a capping structure (32) with a geometry that can match a profile of a lower region (18) of the wax pattern (12), and at least one support brace (38) extending outward from the support capping structure (32). The support structure (30) can be placed on a surface of the lower region (18). The support capping structure (32) can form a defined envelope (36) to enclose the lower region (18) of the wax pattern (12). The support structure (30) is connected to a base plate (22) by the support brace(s) (38). The capping structure (32) and the support brace(s) (38) secure the wax pattern (12) to the base plate (22) and distribute the load of the wax pattern (12) to maximize strength while minimizing the risk of a discontinuity in the wax or shell that could affect the casting process.

    MANUFACTURING PROCESS FOR BLADES OF A TURBO MACHINE
    5.
    发明公开
    MANUFACTURING PROCESS FOR BLADES OF A TURBO MACHINE 审中-公开

    公开(公告)号：EP4112204A1

    公开(公告)日：2023-01-04

    申请号：EP22177714.7

    申请日：2022-06-08

    申请人： Rolls-Royce plc

    发明人： Bing, Graham

    IPC分类号： B22C7/02 ,  B22C9/02 ,  B22C9/04 ,  B22C9/24 ,  B22C21/14 ,  B22D27/04

    摘要： A manufacturing process for blades (5) of a turbomachine, e.g. a gas turbine engine for an aircraft. In the process: a) a ceramic core piece (1) that comprises at least two ceramic core elements (1', 1", 1‴, 1ʺʺ) and a clamping part (2) that connects the ceramic core elements, is positioned in a wax forming device (100), subsequently; b) a molten wax material (W) is applied to the outside of the ceramic core piece (1) in the wax forming device (100) and the wax is allowed to solidify, and subsequently; c) at least two turbomachine blades (5) are cast using a crystallographically-oriented metal casting process and the wax (W) and the ceramic core piece (1) are removed.

    HOHLKÖRPER AUS AMORPHEM METALL
    8.
    发明公开
    HOHLKÖRPER AUS AMORPHEM METALL 审中-公开

    公开(公告)号：EP3895827A1

    公开(公告)日：2021-10-20

    申请号：EP20170051.5

    申请日：2020-04-17

    申请人： Heraeus Amloy Technologies GmbH

    发明人： WACHTER, Hans Jürgen ,  BIEN, Elena

    IPC分类号： B22C9/24 ,  B22D17/22 ,  C22C1/00 ,  C22C43/00 ,  C22C45/00 ,  C22C45/10

    摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Hohlkörpers aus amorphem Metall. Das Verfahren umfasst die Schritte: a) Bereitstellen einer metallischen Zusammensetzung, die geeignet ist amorphes Metall herzustellen, b) Schmelzen der Zusammensetzung gemäß Schritt a), um eine Schmelze zu erhalten, c) Einbringen der Schmelze nach Schritt b) in eine Kavität einer Gussform, wobei die Gussform einen Innenkern umfasst, wobei zumindest ein Teilbereich der Mantelfläche des Innenkerns durch ein Abtrennelement umschlossen ist, und wobei das Abtrennelement nicht an dem Innenkern befestigt ist, d) Abkühlen der Schmelze in der Gussform, um ein Formstück aus amorphem Metall zu erhalten, e) Entfernen des Innenkerns und des Abtrennelements vom Formstück nach Schritt d), um einen Hohlkörper aus amorphem Metall zu erhalten. Die vorliegende Erfindung betrifft ferner einen Hohlkörper aus amorphen Metall, insbesondere ein Rohr aus amorphen Metall.

    GEAR HOUSING FOR ELECTRIC POWER STEERING DEVICE, MANUFACTURING METHOD THEREOF, AND ELECTRIC POWER STEERING DEVICE
    10.
    发明公开
    GEAR HOUSING FOR ELECTRIC POWER STEERING DEVICE, MANUFACTURING METHOD THEREOF, AND ELECTRIC POWER STEERING DEVICE 审中-公开

    公开(公告)号：EP3705375A1

    公开(公告)日：2020-09-09

    申请号：EP18873158.2

    申请日：2018-10-25

    申请人： NSK Ltd.

    发明人： ISHII, Takayuki

    IPC分类号： B62D5/04 ,  B22C9/24 ,  B22D17/00 ,  B29C45/00

    摘要： A structure of a gear housing is achieved that is capable of ensuring rigidity and moldability even in a case where the thickness of a front-side housing of the gear housing is reduced. Reinforcing ribs 38a, 38b, 38c are arranged on a front side surface of the front-side housing 15a so as to span between a worm housing portion 18a and a worm wheel bottom portion 40 of a worm wheel housing portion 17a. The extending direction of the reinforcing ribs 38a, 38b, 38c is made to coincide with the direction in which an engagement reaction force acts between a worm wheel and a worm.