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    Differential carrier and ring gear assembly
    11.
    发明授权
    Differential carrier and ring gear assembly 有权

    公开(公告)号：US11873888B1

    公开(公告)日：2024-01-16

    申请号：US18056890

    申请日：2022-11-18

    Applicant: GM Global Technology Operations LLC

    Inventor： Huaxin Li ,  Debkumar Rakshit ,  Cheonjae Bahk ,  Pankaj Kumar Jha ,  William John Wilson

    IPC: F16H48/38 ,  F16H48/40

    CPC classification number: F16H48/40 ,  F16H2048/382 ,  F16H2048/385

    Abstract: A differential carrier and ring gear assembly for a vehicle is provided. The assembly comprises a differential carrier, a ring gear, and a weld nugget. The differential carrier comprises an outer surface including a first contact face having a weld end extending to a root end. The first contact face has a first slot formed on a first radial portion thereof. The ring gear is disposed about the differential carrier and comprises an inner side having an inner surface. The inner side has a stop flange abutting the root end. The inner surface comprises a second contact face disposed on the first contact face such that the root end is in abutment with the second end. The first and second hollow channels define a pocket therebetween and the first slot defines a first vent hole for venting. The weld nugget is disposed between the first and second contact faces.

    System and method of manufacturing a resistance spot weld of workpieces
    12.
    发明授权
    System and method of manufacturing a resistance spot weld of workpieces 有权

    公开(公告)号：US11794270B2

    公开(公告)日：2023-10-24

    申请号：US17307277

    申请日：2021-05-04

    Applicant: GM Global Technology Operations LLC

    Inventor： Huaxin Li ,  MingFeng Shi ,  Jatinder Paul Singh ,  Dale A. Gerard

    IPC: B23K11/16 ,  B23K11/11 ,  B23K11/24 ,  B23K35/02 ,  C22C19/03 ,  B23K35/30 ,  B23K11/20 ,  B23K103/04

    CPC classification number: B23K11/166 ,  B23K11/115 ,  B23K11/20 ,  B23K11/24 ,  B23K35/0255 ,  B23K35/3033 ,  C22C19/03 ,  B23K2103/04

    Abstract: A system for increasing joint strength and reducing embrittlement in a resistance spot weld of metal workpieces is disclosed. The system comprises a stackup of first and second metal workpieces, and an interface member disposed between the first and second metal workpieces. The interface member comprises a peripheral wall defining a hollow inner portion. The peripheral wall has a first open end extending to a second open end. The first open end is in contact with the first metal workpiece defining a first weld portion thereon. The second open end is in contact with the second metal workpiece defining a second weld portion thereon. The system further comprises a first electrode configured to contact the first metal workpiece to heat the peripheral wall at the first weld portion and join the first metal workpiece with the first open end of the peripheral wall. The system further comprises a second electrode configured to contact the second metal workpiece to heat the peripheral wall at the second weld portion and join the second metal workpiece with the second open end of the peripheral wall to define a weld joint. The system further comprises a power source configured to power the first and second electrodes and a controller configured to control the power to the first and second electrodes to heat the peripheral wall.

    DISSIMILAR METAL LASER WELDING
    14.
    发明申请
    DISSIMILAR METAL LASER WELDING 有权

    公开(公告)号：US20220161362A1

    公开(公告)日：2022-05-26

    申请号：US17101316

    申请日：2020-11-23

    Applicant: GM Global Technology Operations LLC

    Inventor： Huaxin Li ,  Liang Wang ,  Daniel J. Wilson ,  Jatinder P. Singh

    IPC: B23K26/323 ,  B32B15/01 ,  C22C9/06 ,  B23K35/30 ,  B23K33/00 ,  B23K26/211 ,  B23K26/342 ,  B23K26/60

    Abstract: A method of welding a component made from a ferrous alloy to a component made from an aluminum alloy includes machining and cleaning a fay surface on the ferrous alloy component, machining and cleaning a fay surface on the aluminum alloy component, depositing a layer of copper alloy material onto the fay surface of the ferrous alloy component, forming a weld groove on at least one of the layer of copper alloy material deposited on the fay surface of the ferrous alloy component and the fay surface of the aluminum alloy component, and laser welding the layer of copper alloy deposited on the fay surface of the ferrous alloy component and the fay surface of the aluminum alloy component to one another.

    TORSIONAL DAMPER AND METHOD OF WELDING PARTS HAVING DISSIMILAR MATERIALS
    15.
    发明申请
    TORSIONAL DAMPER AND METHOD OF WELDING PARTS HAVING DISSIMILAR MATERIALS 有权

    公开(公告)号：US20210402504A1

    公开(公告)日：2021-12-30

    申请号：US16913406

    申请日：2020-06-26

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Daniel J. Wilson ,  Huaxin Li ,  James D. Cremonesi ,  Jianghuai Yang ,  Liang Wang ,  Qigui Wang

    IPC: B23K20/12 ,  B23K20/227 ,  B23K20/02

    Abstract: A method of joining first and second parts formed of dissimilar materials is provided. The first part defines a first part contacting surface having a frustoconical shape. The first and second parts are brought into contact with one another, with one of the first and second parts being rotated while the other remains stationary, so as to generate frictional heat between the contacting surfaces of the parts, the generated frictional heat producing softened adjacent regions in the first and second parts. A force is applied to the first and second parts to plastically deform the softened adjacent regions and to forge together the first and second parts to form a solid-state joint. A composite torsional damper hub assembly includes a steel stem and a damper hub welded to the stem at an interface. The damper hub is formed of aluminum or an aluminum alloy, and the interface is generally frustoconical.

    HIGH STRENGTH JOINTS BETWEEN STEEL AND TITANIUM
    16.
    发明申请
    HIGH STRENGTH JOINTS BETWEEN STEEL AND TITANIUM 有权

    公开(公告)号：US20210116009A1

    公开(公告)日：2021-04-22

    申请号：US16655412

    申请日：2019-10-17

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Huaxin Li ,  Cheonjae Bahk ,  Pete R. Garcia ,  Daniel J. Wilson

    IPC: F16H48/40 ,  C22C14/00 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/04 ,  B23K11/26 ,  B23K11/11 ,  B23K11/20

    Abstract: A method of joining parts, where at least one of the parts has a faying surface defining grooves therein. One of the parts is formed of a majority of titanium, and the other part is formed of a majority of iron. The method includes providing a set of opposed welding electrodes disposed on a side of each part and applying pressure to and heating the parts via the set of electrodes to form a joint between the parts. A bonded assembly includes a first part formed of a majority of titanium and a second part formed of a steel alloy. The first and second parts having a bond that includes a portion of the first part directly in contact with and attached to a portion of the second part. The parts may be a titanium-containing differential carrier case bonded to a steel gear.

    Wastegate assembly, a turbocharger that utilizes the wastegate assembly and a method
    17.
    发明授权
    Wastegate assembly, a turbocharger that utilizes the wastegate assembly and a method 有权

    公开(公告)号：US10458319B2

    公开(公告)日：2019-10-29

    申请号：US15611180

    申请日：2017-06-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Grant W. Brady ,  Huaxin Li ,  Julie A. Swartz ,  Jane E. Preston

    IPC: F02B37/18 ,  F02B39/08 ,  B23K26/22

    Abstract: A method of joining parts of the wastegate assembly, and a wastegate assembly includes an arm defining a hole. The wastegate assembly also includes a shaft. The shaft includes a first end disposed inside the hole of the arm. The shaft includes an outer surface defining a groove disposed inside the hole of the arm. The arm and the first end of the shaft are welded together to form a joint having a joint root region disposed adjacent to the groove.A turbocharger includes a compressor, a turbine and a rotating assembly driven by exhaust gas. The rotating assembly has a turbine wheel disposed inside the turbine and a compressor wheel disposed inside the compressor. The turbocharger further includes the wastegate assembly described above, and the wastegate assembly defines an opening configured to selectively redirect at least a portion of the exhaust gas to bypass the turbine wheel.

    BIMETALLIC PISTON PIN
    20.
    发明申请
    BIMETALLIC PISTON PIN 审中-公开

    公开(公告)号：US20180292006A1

    公开(公告)日：2018-10-11

    申请号：US15482845

    申请日：2017-04-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Huaxin Li ,  Glenn E. Clever ,  Daniel J. Wilson

    IPC: F16J1/16

    Abstract: A bimetallic piston pin for a vehicle engine includes a tubular steel alloy shell, a first core member, a second core member and a middle core member. The tubular steel alloy shell includes a first end, a second end and a middle region. The tubular steel alloy shell also includes an interior surface and an exterior surface. The first core member may be disposed within the tubular steel alloy shell at the first end and the second core member may also disposed within the tubular steel alloy shell at the second end. The middle core member may be disposed within the tubular steel alloy shell between the first core member and the second core member.

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