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    APERTURE PLATE FOR OVERHEATING PREVENTION AND WIRE NOZZLE PROTECTION
    61.
    发明申请
    APERTURE PLATE FOR OVERHEATING PREVENTION AND WIRE NOZZLE PROTECTION 审中-公开
    用于过热预防和电线喷嘴保护的防锈板

    公开(公告)号：US20170036305A1

    公开(公告)日：2017-02-09

    申请号：US15200452

    申请日：2016-07-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Hui-ping Wang ,  Michael G. Poss ,  Aaron D. Cox ,  Blair E. Carlson ,  Thomas A. Perry

    IPC: B23K26/70 ,  B23K26/21 ,  B23K26/06

    CPC classification number: B23K26/706 ,  B23K37/006

    Abstract: An aperture plate for a welding apparatus includes a body defining an aperture. The body of the aperture plate includes a first end and a second end that is opposite the first end. In addition, the body includes a first surface intersecting the first and second ends. Moreover, the body includes a second surface formed opposite the first surface. The second surface is nonparallel to the first surface.

    Abstract translation: 用于焊接设备的孔板包括限定孔的主体。 孔板的主体包括与第一端相对的第一端和第二端。 此外，主体包括与第一和第二端相交的第一表面。 此外，主体包括与第一表面相对形成的第二表面。 第二表面与第一表面不平行。

    WELDING METHOD AND SYSTEM
    62.
    发明申请
    WELDING METHOD AND SYSTEM 审中-公开
    焊接方法与系统

    公开(公告)号：US20160355902A1

    公开(公告)日：2016-12-08

    申请号：US15101613

    申请日：2014-01-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David Yang ,  Jing Zhang ,  Li Sun ,  Blair E. Carlson

    IPC: C21D9/50 ,  B23K11/16 ,  B23K11/11 ,  C21D11/00 ,  B23K26/32 ,  B23K20/10 ,  B23K20/22 ,  B23K9/23 ,  B23K26/14

    CPC classification number: C21D9/505 ,  B23K9/16 ,  B23K9/23 ,  B23K11/115 ,  B23K11/16 ,  B23K20/10 ,  B23K20/22 ,  B23K26/244 ,  B23K26/32 ,  B23K26/348 ,  B23K2103/04 ,  B23K2103/10 ,  B23K2103/50 ,  C21D9/50 ,  C21D11/00 ,  C21D11/005 ,  C21D2211/008

    Abstract: A welding method includes the following steps: (a) determining a martensite tempering temperature of the at least two workpieces based, at least in part, on the chemical composition and microstructure of the woworkpieces; (b) applying sufficient energy to the workpieces to melt the workpieces at a target location, thereby creating a weld pool; (c) determining, via the control module, a target temperature and cooling range of a coolant and cooling range based, at least in part, on the martensite tempering temperature and HAZ width; and (d) cooling the first and second workpieces with the coolant such that a temperature of the workpieces at heat-affected zones is controlled below the martensite tempering temperature in order to minimize softening at the heat-affected zones. The present invention also relates to a welding system for minimizing HAZ softening.

    Abstract translation: 一种焊接方法包括以下步骤：（a）至少部分地基于所述焊料的化学组成和微结构来确定所述至少两个工件的马氏体回火温度; （b）向工件施加足够的能量以在目标位置处熔化工件，从而形成焊接池; （c）至少部分地基于马氏体回火温度和HAZ宽度，经由控制模块确定冷却剂的目标温度和冷却范围;以及冷却范围; 和（d）用冷却剂冷却第一和第二工件，使得热影响区域的工件的温度控制在马氏体回火温度以下，以使热影响区域的软化最小化。 本发明还涉及一种用于最小化HAZ软化的焊接系统。

    MULTI-STEP DIRECT WELDING OF AN ALUMINUM-BASED WORKPIECE TO A STEEL WORKPIECE
    64.
    发明申请
    MULTI-STEP DIRECT WELDING OF AN ALUMINUM-BASED WORKPIECE TO A STEEL WORKPIECE 有权
    基于铝的工件对钢铁工具的多步直接焊接

    公开(公告)号：US20150053655A1

    公开(公告)日：2015-02-26

    申请号：US14464476

    申请日：2014-08-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David R. Sigler ,  Blair E. Carlson ,  Yelena Myasnikova ,  Michael J. Karagoulis

    IPC: B23K11/20 ,  B23K11/16 ,  B23K11/18 ,  B23K11/11

    CPC classification number: B23K11/20 ,  B23K11/115 ,  B23K2103/20

    Abstract: A workpiece stack-up that includes at least a steel workpiece and an aluminum-based workpiece can be resistance spot welded by employing a multi-stage spot welding method in which the passage of electrical current is controlled to perform multiple stages of weld joint development. The multiple stages include: (1) a molten weld pool growth stage in which a molten weld pool is initiated and grown within the aluminum-based workpiece; (2) a molten weld pool solidification stage in which the molten weld pool is allowed to cool and solidify into a weld nugget that forms all or part of a weld joint; (3) a weld nugget re-melting stage in which at least a portion of the weld nugget is re-melted; and (4) a re-melted weld nugget solidification stage in which the re-melted portion of the weld nugget is allowed to cool and solidify.

    Abstract translation: 包括至少钢工件和铝基工件的工件叠层可以通过采用多级点焊方法进行电阻点焊，其中电流通过被控制以进行多个焊接接头显影阶段。 多级包括：（1）熔融熔池生长阶段，其中熔融熔池在铝基工件内启动和生长; （2）熔融熔池固化阶段，使熔融熔池冷却固化成形成焊接接头的全部或部分的焊接熔核; （3）焊接熔核再熔化阶段，其中至少一部分焊点熔化; 和（4）再熔融的焊点固化阶段，其中焊接熔核的再熔化部分被允许冷却和固化。

    FABRICATED-IN-PLACE INSERTS TO RECEIVE SELF-PIERCING RIVETS
    65.
    发明申请
    FABRICATED-IN-PLACE INSERTS TO RECEIVE SELF-PIERCING RIVETS 有权
    制作自制筐子的嵌入式插件

    公开(公告)号：US20140178152A1

    公开(公告)日：2014-06-26

    申请号：US14189001

    申请日：2014-02-25

    Applicant: GM Global Technology Operations LLC

    Inventor： Blair E. Carlson ,  PEI-CHUNG WANG

    IPC: F16B19/08 ,  B21J15/02

    CPC classification number: F16B19/086 ,  B21J15/025 ,  B22D19/04 ,  B29C65/562 ,  B29C65/8253 ,  B29C66/721 ,  B29C70/76 ,  B29L2031/30 ,  F16B5/04 ,  Y10T29/49835 ,  Y10T29/49956 ,  Y10T428/12271 ,  Y10T428/22

    Abstract: One or more ductile metal inserts may be selectively incorporated into articles of limited ductility, including metal castings and molded polymers. The inserts are positioned at joint locations for joining of the article to other articles using self-piercing riveting (SPR). The inserts are of suitable ductility, thickness and strength to receive and retain self-piercing rivets and enable a strong riveted joint between the article and a second article. In an embodiment the articles are magnesium alloy castings formed by any of sand casting, die casting and semi-solid metal casting. The chemical composition of the insert may be informed by the anticipated corrosive environment of the joint and the casting temperature of the magnesium alloy. For magnesium alloy castings which may be exposed to corrosive environments, aluminum alloy inserts are preferred.

    Abstract translation: 一个或多个延性金属插入物可以选择性地掺入有限延展性的制品中，包括金属铸件和模塑聚合物。 插入件定位在接合位置，用于使用自穿孔铆接（SPR）将制品与其他制品接合。 插入件具有合适的延展性，厚度和强度以接收和保持自穿孔铆钉，并且能够在物品和第二制品之间形成牢固的铆接接头。 在一个实施例中，制品是通过砂铸，压铸和半固体金属铸造中的任何一种形成的镁合金铸件。 插入物的化学成分可以通过接头的预期腐蚀环境和镁合金的铸造温度通知。 对于可能暴露于腐蚀性环境的镁合金铸件，优选铝合金刀片。

    METHOD AND APPARATUS FOR FORMING SHEET METAL
    67.
    发明公开
    METHOD AND APPARATUS FOR FORMING SHEET METAL 审中-公开

    公开(公告)号：US20240157426A1

    公开(公告)日：2024-05-16

    申请号：US17984388

    申请日：2022-11-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Joshua L. Solomon ,  Lu Huang ,  Hui-Ping Wang ,  Nathan Sigmund ,  Tae Hwa Lee ,  Blair E. Carlson

    IPC: B21D22/02

    CPC classification number: B21D22/02

    Abstract: A forming tool has an upper portion composed of an upper forming die arranged between a first clamping element and a second clamping element, and a lower portion composed of a lower forming die arranged between a third clamping element and a fourth clamping element. The first clamping element and the third clamping element cooperate to exert a first clamping force on a workpiece; and the second clamping element and the fourth clamping element cooperate to exert a second clamping force on the workpiece. The upper forming die cooperates with the first and second clamping elements and the lower forming die cooperates with the third and fourth clamping elements to exert a lateral force on the workpiece when the first and second clamping forces are being exerted on the workpiece and when a vertical compressive force is being exerted upon the upper forming die and the lower forming die.

    REGULATING AIR FLOW TO IMPROVE LASER WELD QUALITY
    68.
    发明公开
    REGULATING AIR FLOW TO IMPROVE LASER WELD QUALITY 审中-公开

    公开(公告)号：US20240075553A1

    公开(公告)日：2024-03-07

    申请号：US17901158

    申请日：2022-09-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Scott E. Parrish ,  Baixuan Yang ,  Hui-ping Wang ,  Scott A. Hooker ,  Blair E. Carlson

    IPC: B23K26/14 ,  B23K26/03

    CPC classification number: B23K26/14 ,  B23K26/032

    Abstract: Aspects of the disclosure include air flow systems configured to regulate air flow when laser welding to improve laser weld quality. An exemplary air flow system can include a primary inlet coupled to an air source and one or more secondary inlets coupled to the primary inlet. At least one of the one or more secondary inlets can include an internal valve. Each internal valve is actuatable between a fully open state, a fully closed state, and an intermediate state. The air flow system can further include an outlet coupled to each of the one or more secondary inlets downstream of the internal valve and a controller configured to adjust a position of each internal valve. The controller is configured to adjust the position of each internal valve based on an air flow mapping to increase an average air flow velocity along a laser beam of a welding laser.

    Aluminum alloy to steel welding process
    70.
    发明授权
    Aluminum alloy to steel welding process 有权

    公开(公告)号：US11123816B2

    公开(公告)日：2021-09-21

    申请号：US16212147

    申请日：2018-12-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David R. Sigler ,  James G. Schroth ,  Blair E. Carlson ,  Yelena Myasnikova ,  David Yang

    IPC: B23K11/20 ,  B23K11/11 ,  B23K35/02 ,  B23K103/20

    Abstract: A resistance spot welding method may involve spot welding a workpiece stack-up that includes a steel workpiece and an aluminum alloy workpiece. A pair of opposed welding electrodes are pressed against opposite sides of the workpiece stack-up with one welding electrode contacting the aluminum alloy workpiece and the other welding electrode contacting the steel workpiece. The welding electrodes are constructed so that, when an electrical current is passed between the electrodes and through the workpiece stack-up, the electrical current has a greater current density in the steel workpiece than in the aluminum alloy workpiece to thereby concentrate heat within a smaller zone in the steel workpiece. Concentrating heat within a smaller zone in the steel workpiece is believed to modify the solidification behavior of the resultant molten aluminum alloy weld pool in a desirable way.

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