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公开(公告)号：US20180311731A1
公开(公告)日：2018-11-01
申请号：US15497832
申请日：2017-04-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： John P. SPICER , Jason J. NOLTE , Thomas A. PERRY , Blair E. Carlson , Anil K. SACHDEV , HyungMin CHAE , Mark A. SMITH
Abstract: An additive manufacturing system has a powder delivery system for presenting a powder material to a build chamber. A laser selectively sinters the powder material in the build chamber. The build chamber is presented in an annular configuration with the powder delivery system and laser arranged within a central portion thereof.
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公开(公告)号：US20180272457A1
公开(公告)日：2018-09-27
申请号：US15992748
申请日：2018-05-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David Yang , David R. Sigler , Blair E. Carlson , James G. Schroth , Michael J. Karagoulis
IPC: B23K11/20 , B23K35/02 , B23K11/11 , B23K11/30 , B23K103/20
CPC classification number: B23K11/20 , B23K11/115 , B23K11/3009 , B23K11/3018 , B23K35/0205 , B23K35/0261 , B23K2103/20
Abstract: A method of spot welding a workpiece stack-up that includes a steel workpiece and an aluminum alloy workpiece involves passing an electrical current through the workpieces and between welding electrodes that are constructed to affect the current density of the electrical current. The welding electrodes, more specifically, are constructed to render the density of the electrical current greater in the steel workpiece than in the aluminum alloy workpiece. This difference in current densities can be accomplished by passing, at least initially, the electrical current between a weld face of the welding electrode in contact with the steel workpiece and a perimeter region of a weld face of the welding electrode in contact with the aluminum alloy workpiece.
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公开(公告)号：US10058949B2
公开(公告)日：2018-08-28
申请号：US14503504
申请日：2014-10-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Blair E. Carlson , David Yang , David R. Sigler , Robert T. Szymanski , Anil K. Sachdev
IPC: B23K9/28 , B23K11/00 , B23K11/20 , B23K11/11 , B23K103/20
CPC classification number: B23K11/20 , B23K11/115 , B23K2103/20
Abstract: A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece together includes several steps. One step involves inserting a cover between the aluminum or aluminum alloy workpiece and an adjacent welding electrode. In another step, the adjacent welding electrode is pressed against cover, and another opposed welding electrode is pressed against the steel workpiece at a weld site. In yet another step, electrical current is passed between the welding electrodes, passed through the cover, and passed through the workpieces in order to initiate and grow a molten weld pool within the aluminum or aluminum alloy workpiece.
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公开(公告)号：US20170361392A1
公开(公告)日：2017-12-21
申请号：US15616252
申请日：2017-06-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David R. Sigler , Blair E. Carlson , Hui-Ping Wang , Nannan Chen
CPC classification number: B23K11/115 , B23K11/20 , B23K11/3009 , B23K35/0205 , B23K2103/20
Abstract: A spot welding electrode and a method of using the electrode to resistance spot weld a workpiece stack-up that includes an aluminum workpiece and an adjacent overlapping steel workpiece are disclosed. The spot welding electrode includes a weld face having a multistep conical geometry that includes a series of steps centered on a weld face axis. The series of steps comprises an innermost first step in the form of a central plateau and, additionally, one or more annular steps that surround the central plateau and cascade radially outwardly from the central plateau towards an outer perimeter of the weld face. The weld face has a conical cross-sectional profile in which a periphery of a top plateau surface of the central plateau and a periphery of a top annular step surface of each of the one or more annular steps are contained within a conical sectional area.
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15.发明申请公开(公告)号：US20170252853A1
公开(公告)日：2017-09-07
申请号：US15442155
申请日：2017-02-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Hui-Ping Wang , Blair E. Carlson , David R. Sigler , Michael J. Karagoulis
CPC classification number: B23K11/20 , B23K11/115 , B23K11/163 , B23K11/3009 , B23K2101/34 , B23K2103/20
Abstract: A spot weld may be formed between an aluminum workpiece and an adjacent overlapping steel workpiece with the use of opposed spot welding electrodes that have mating weld faces designed for engagement with the outer surfaces of the workpiece stack-up assembly. The electrode that engages the stack-up assembly proximate the aluminum workpiece includes a central ascending convex surface and the electrode that engages the stack-up assembly proximate the steel workpiece has an annular surface. The mating weld faces of the first and second spot welding electrodes distribute the passing electrical current along a radially outwardly expanding flow path to provide a more uniform temperature distribution over the intended spot weld interface and may also produce a deformed bonding interface within the formed weld joint. Each of these events can beneficially affect the strength of the weld joint.
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Patent Agency Ranking
公开(公告)号：US09556892B2
公开(公告)日：2017-01-31
申请号：US14189001
申请日：2014-02-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Blair E. Carlson , Pei-Chung Wang
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。
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公开(公告)号：US09358608B2
公开(公告)日：2016-06-07
申请号：US14172018
申请日：2014-02-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Blair E. Carlson , Paul E. Krajewski
CPC classification number: B22D19/16 , B22D19/00 , B60B3/02 , B60B3/06 , B60B2360/104 , B60B2360/106 , B60B2360/147
Abstract: A method of forming a casting includes providing a preform to a mold cavity. The preform is formed from one of a first metal and a second metal and defines an interface surface. A molten portion of the other of the first metal and the second metal is cast into the mold such that the molten portion proximately contacts the interface surface of the preform. An interface layer at the interface surface, a first portion defined by the mold cavity and the interface layer, and a second portion defined by the interface layer, are formed during casting. The interface layer may define a metallurgical bond between the first portion and the second portion. In the non-limiting example provided herein, the first portion is substantially comprised of aluminum and the second portion is substantially comprised of magnesium. In a non-limiting example, the casting may be configured as a vehicle wheel.
Abstract translation: 一种形成铸件的方法包括向模腔提供预制件。 预成型件由第一金属和第二金属中的一种形成，并且限定了界面表面。 将第一金属和第二金属中的另一个的熔融部分浇铸到模具中，使得熔融部分接近于预型件的界面。 在铸造期间形成在界面处的界面层，由模腔和界面层限定的第一部分和由界面层限定的第二部分。 界面层可以在第一部分和第二部分之间限定冶金结合。 在本文提供的非限制性实例中，第一部分基本上由铝组成，第二部分基本上由镁构成。 在非限制性示例中，铸件可以被配置为车轮。
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公开(公告)号：US20150096962A1
公开(公告)日：2015-04-09
申请号：US14503969
申请日：2014-10-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David R. Sigler , James G. Schroth , Blair E. Carlson , Yelena Myasnikova , David Yang
CPC classification number: B23K11/20 , B23K11/115 , B23K35/0261 , B23K2103/20
Abstract: A resistance spot welding method may involve spot welding a workpiece stack-up that includes a steel workpiece and an aluminum alloy workpiece that overlap one another to provide a faying interface. 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.
Abstract translation: 电阻点焊方法可以包括点焊包括钢工件和铝合金工件的工件叠层，以使其彼此重叠以提供接合界面。 一对相对的焊接电极被压在工件堆叠的相对两侧，一个焊接电极与铝合金工件接触，另一个焊接电极与钢工件接触。 焊接电极被构造成使得当电极在电极之间通过并且通过工件堆叠时，电流在钢工件中的电流密度比在铝合金工件中大，从而将热量集中在较小的 钢工件区。 认为在钢工件的较小区域内集中热量以所需的方式改变所得熔融铝合金焊池的凝固特性。
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19.发明申请RESISTANCE SPOT WELDING STEEL AND ALUMINUM WORKPIECES USING INSERTABLE COVER 审中-公开电阻点焊焊接钢和使用绝缘盖的铝工件公开(公告)号：US20150096961A1
公开(公告)日：2015-04-09
申请号：US14503504
申请日：2014-10-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Blair E. Carlson , David Yang , David R. Sigler , Robert T. Szymanski , Anil K. Sachdev
CPC classification number: B23K11/20 , B23K11/115 , B23K2103/20
Abstract: A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece together includes several steps. One step involves inserting a cover between the aluminum or aluminum alloy workpiece and an adjacent welding electrode. In another step, the adjacent welding electrode is pressed against cover, and another opposed welding electrode is pressed against the steel workpiece at a weld site. In yet another step, electrical current is passed between the welding electrodes, passed through the cover, and passed through the workpieces in order to initiate and grow a molten weld pool within the aluminum or aluminum alloy workpiece.
Abstract translation: 钢工件和铝或铝合金工件的电阻点焊方法包括几个步骤。 一步涉及在铝或铝合金工件和相邻焊接电极之间插入盖子。 在另一步骤中，将相邻的焊接电极压在盖上，另一个相对的焊接电极在焊接部位被压在钢工件上。 在另一个步骤中，电流在焊接电极之间通过，穿过盖子并通过工件，以便引发和生长铝或铝合金工件内的熔融焊池。
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公开(公告)号：US20240116133A1
公开(公告)日：2024-04-11
申请号：US18045585
申请日：2022-10-11
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Junjie Ma , John Forrest , William A. Keller , Baixuan Yang , Michael G. Poss , Blair E. Carlson
IPC: B23K26/042 , B23K26/06 , B23K26/211 , B23K26/70
CPC classification number: B23K26/042 , B23K26/0648 , B23K26/211 , B23K26/705
Abstract: Systems and methods determine alignment between a wire and a laser beam in laser joining. A system for checking alignment of a wire relative to a beam of a laser includes a controller configured to align, by tooling, the beam with a sensor system. A laser generates the beam across the wire, with the beam directed to the sensor system. The sensor system measures light intensity of the beam. A processor computes a feature parameter representative of an alignment between the wire and the beam. The processor determines whether the feature parameter is within the process specifications.
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