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    Casting die and method of mitigating entrained air in a cast article
    32.
    发明授权
    Casting die and method of mitigating entrained air in a cast article 有权

    公开(公告)号：US12121960B1

    公开(公告)日：2024-10-22

    申请号：US18640032

    申请日：2024-04-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Paul J. Boone

    IPC: B22D17/22

    CPC classification number: B22D17/2272

    Abstract: A casting die includes a first ingate defining a first annular chamber and a second ingate defining a second annular chamber and spaced from the first ingate. The die includes a first end ring gate concentric with the first ingate and defining a first end ring chamber in fluid communication with the first annular chamber, and a second end ring gate concentric with the second ingate and defining a second end ring chamber in fluid communication with the second annular chamber. The die includes runners interconnecting the first and second end ring gates. Each of the runners defines a conductor bar channel in fluid communication with the first and second end ring chambers. The die includes an overflow gate disposed between the first and second ingates, wherein the overflow gate defines an annular overflow chamber in fluid communication with the conductor.

    SYSTEM AND METHOD OF MAKING AN ELECTRIC CONDUCTOR HAVING A CONDUCTIVE SKIN LAYER
    34.
    发明公开
    SYSTEM AND METHOD OF MAKING AN ELECTRIC CONDUCTOR HAVING A CONDUCTIVE SKIN LAYER 审中-公开

    公开(公告)号：US20240257996A1

    公开(公告)日：2024-08-01

    申请号：US18161496

    申请日：2023-01-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Lei Hao

    IPC: H01B13/00 ,  B23K20/02 ,  H01B5/02

    CPC classification number: H01B13/0036 ,  B23K20/023 ,  H01B5/02 ,  H01B13/0016 ,  B23K2101/38 ,  B23K2103/10

    Abstract: A method of making an electric conductor having a conductive skin layer. The method comprises providing a conductive member having a first width and a conductive layer disposed thereon for conductivity. The conductive layer has a second width to define a width ratio of the first width to the second width of 4:1 to 200:1. The conductive layer has greater conductivity than the conductive member. The method comprises disposing the conductive layer about the conductive member to define a conductive layered member and pressing the conductive layered member for mechanical contact to define a pressed layered member. The method comprises thermally treating the pressed layered member for diffusion between the conductive layer and the conductive member defining a diffused layered member. The method further comprises cooling the diffused layered member for diffusion bonding free of an intermetallic phase between the conductive layer and the conductive member.

    REPAIR ULTRA-LARGE CASTING
    38.
    发明公开
    REPAIR ULTRA-LARGE CASTING 审中-公开

    公开(公告)号：US20230356293A1

    公开(公告)日：2023-11-09

    申请号：US17735337

    申请日：2022-05-03

    Applicant: GM Global Technology Operations LLC

    Inventor： Daniel J. Wilson ,  Liang Wang ,  Qigui Wang ,  Devin R. Hess ,  Michelle A. Wood ,  Ronald C. Daul ,  Ali Shabbir

    IPC: B22D17/22 ,  B22C9/22

    CPC classification number: B22D17/229 ,  B22C9/22

    Abstract: A design for repair casting having a repairable ultra-large single-piece casting and a replacement part. The ultra-large single-piece casting includes a main body portion, at least one predefined replaceable portion integrally cast with the main body portion, and a cut-guide delineating the predefined replaceable portion from the main body portion. The cut-guide includes a continuous channel defined on an exterior surface of the single-piece casting. The cut-guide further includes a rib extending from a channel wall on the main body portion. A damaged replaceable portion is excisable from the main-body portion by cutting through the single-piece casting along the cut-guide. The excised damaged replaceable portion may be replaced with the replacement part, which has substantially the same geometry, dimensions, and mechanical properties as an undamaged replaceable portion. The replacement part may be joined to the main body portion by mechanical means or by welding.

    System and method of making a crankshaft with alternate materials
    40.
    发明授权
    System and method of making a crankshaft with alternate materials 有权

    公开(公告)号：US11619255B1

    公开(公告)日：2023-04-04

    申请号：US17698410

    申请日：2022-03-18

    Applicant: GM Global Technology Operations LLC

    Inventor： David C. Klemstine ,  Guirong Cao ,  Jianghuai Yang ,  William A. Berry ,  Qigui Wang ,  Anil K. Sachdev ,  Steven L. Burkholder

    IPC: F16C3/04 ,  B22D19/04 ,  F16C3/10 ,  F16C3/20

    Abstract: A crankshaft for an internal combustion engine is provided. The crankshaft comprises at least four main journals aligned on a crankshaft axis of rotation defining a centerline. The crankshaft further comprises at least three pin journals. Each pin journal is disposed about a respective pin journal axis and positioned between the main journals. Each of the pin journals is joined to a pair of crank arms. Each pair of crank arms is joined to a respective main journal. Each of the main journals, pin journals, and crank arms is made of a first metallic material. Each crank arm has an over-molded counterweight metallurgically bonded thereto. Each counterweight is disposed opposite a respective pin journal relative to the centerline for balance and stability. Each counterweight is made of a second metallic material. The crankshaft has a weight ratio of the second metallic material to the first metallic material of between 0.20 to 0.50.

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