BOGIE FRAME FOR RAIL VEHICLES MADE FROM AN ALUMINUM CASTING

    公开(公告)号:US20240059329A1

    公开(公告)日:2024-02-22

    申请号:US18203466

    申请日:2023-05-30

    Applicant: Lothar THONI

    Inventor: Lothar THONI

    CPC classification number: B61F5/52 B22C9/02 B22D25/02

    Abstract: The invention relates to a bogie frame (1) for rail vehicles having at least two wheelsets, the bogie frame comprising two longitudinal members (3), which extend parallel to each other above the axle bearings, one or more cross-members (2) connected to the longitudinal members (3), and a receiving region (5) for functional elements, the bogie frame (1) being produced completely as a single casting of an aluminum alloy in a sand casting process, said casting having a hollow profile, which has cavities (10) in the interior and is stabilized by means of ribbings (8, 9).
    The invention further relates to a method for producing a bogie frame of this type and to a rail vehicle equipped with a bogie frame of this type.

    Method for manufacturing cast product using breathable salt core

    公开(公告)号:US11772150B2

    公开(公告)日:2023-10-03

    申请号:US17761336

    申请日:2019-12-20

    CPC classification number: B22C9/105

    Abstract: A breathable salt core is provided that is placed in a cavity of a casting mold in order to mold a hollow part of a cast product and that is dissolved and removed after casting, the breathable salt core being formed by powder molding innumerable salt particles into a predetermined shape corresponding to the hollow part, wherein a gap that can retain a gas remaining in the cavity in a casting process is formed between the innumerable salt particles that have been powder molded. The breathable salt core thus manufactured assures that residual gas within the cavity pushed by the molten metal to enter the gap formed between salt particles of the salt core, thereby avoiding any incomplete filling of the molten metal, and which can be formed with a simple production process at a low cost.

    Multicore and method of manufacturing hollow product using multicore

    公开(公告)号:US11607722B2

    公开(公告)日:2023-03-21

    申请号:US17579274

    申请日:2022-01-19

    Inventor: Jin-Ho Yoo

    Abstract: Provided is a multicore. The multicore includes a first core, being made of a water-insoluble material, having a hollow formed in the first core and, having an opening formed at both ends of the first core and connected to the hollow, a second core, being made of a water-soluble material and disposed inside the hollow, and a coating layer, being configured to surround the first core to prevent at least a portion of the first core and the second core from being exposed to an outside. Further, the first core includes a plurality of spaces to allow a fluid supplied to an interior of the first core to flow toward the second core.

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