公开(公告)号：US20190105728A1

公开(公告)日：2019-04-11

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

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.

公开(公告)号：US10252369B2

公开(公告)日：2019-04-09

申请号：US14792656

申请日：2015-07-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David Yang ,  Blair E. Carlson ,  David R. Sigler

IPC: B23K11/00 ,  B23K11/11 ,  B23K11/20 ,  B23K37/00 ,  B23K103/20

Abstract: A workpiece stack-up that includes at least a steel workpiece and an aluminum-based workpiece can be resistance spot welded by a spot welding method in which the welding current is controlled to perform one or more stages of weld joint development. When it is desired to terminate weld current flow and to solidify a liquid weld pool into a weld nugget (of mostly aluminum-based composition), additional cooling is applied to the outer surface of the aluminum-based workpiece around the contact area of the spot welding electrode engaging the surface of the aluminum-based workpiece surface. The additional cooling is applied and controlled so as to increase the rate of solidification of the liquid aluminum-based material and to control the direction of solidification of the weld nugget to better confine impurities, and the like, originally in the melt, at the surface of the steel workpiece.

公开(公告)号：US10226841B2

公开(公告)日：2019-03-12

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 ,  B23K26/064 ,  B23K26/21 ,  B23K37/00

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.

公开(公告)号：US10160066B2

公开(公告)日：2018-12-25

申请号：US15340651

申请日：2016-11-01

Applicant: GM Global Technology Operations LLC

Inventor： Xin Yang ,  Blair E. Carlson ,  Yongbing Li

IPC: B23K31/02 ,  B23K35/365 ,  B23K1/20 ,  B23K35/02

Abstract: The present disclosure relates a bonding system formed by a process that provides a first substrate and a second substrate. A flux coating is applied to the first contact surface, and a solder-adhesive mixture comprising an adhesive and a plurality of solder elements in at least a portion of the adhesive is applied to the first contact surface. The second substrate is positioned adjacent the solder-adhesive mixture much that a second contact surface of the second surface is opposite the first contact surface, and heat is applied to the solder-adhesive mixture by way of at least one of the first and second contact surfaces. The solder-adhesive mixture is heated to a temperature that is intended to at least partially melt or at least partially vaporize the flux coating upon contact to promote a bonding condition between the solder-adhesive mixture and the first substrate.

公开(公告)号：US20180111226A1

公开(公告)日：2018-04-26

申请号：US15568851

申请日：2015-04-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  SHANGHAI JIAO TONG UNIVERSITY

Inventor： Hui-Ping Wang ,  Michael G. Poss ,  Blair E. Carlson ,  Fenggui Lu ,  Haichao Cui

IPC: B23K26/244 ,  B23K26/26 ,  B23K37/04 ,  B23K26/08 ,  B23K26/32

Abstract: A method of laser welding a workpiece stack-up that includes two or three overlapping aluminum alloy workpieces involves constraining a free end of an overlapping portion of a first aluminum alloy workpiece against movement away from an underlying second aluminum alloy workpiece to counteract the thermally-induced forces that cause out-of-plane deformation of one or more of the aluminum alloy workpieces during laser welding. Such constraint of the free end of the first aluminum alloy workpiece may be accomplished by clamping, spot welding, or any other suitable practice. By constraining the free end of the first aluminum alloy workpiece, and thus inhibiting out-of-plane deformation of the aluminum alloy workpieces when laser welding is practiced in a nearby welding region, the occurrence of hot cracking is minimized or altogether eliminated in the final laser weld joint.

公开(公告)号：US20170304928A1

公开(公告)日：2017-10-26

申请号：US15492482

申请日：2017-04-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B23K11/31 ,  B23K11/20 ,  B23K11/11 ,  B23K11/30 ,  B23K11/24 ,  B23K103/20 ,  B23K103/04 ,  B23K103/10

Abstract: A method of resistance spot welding workpiece stack-ups of different combinations of metal workpieces with a single weld gun using the same set of welding electrodes is disclosed. In this method, a set of opposed welding electrodes that include an original shape and oxide-disrupting structural features are used to resistance spot weld at least two of the following types of workpiece stack-ups in a particular sequence: (1) a workpiece stack-up of two or more aluminum workpieces; (2) a workpiece stack-up that includes an aluminum workpiece and an adjacent steel workpiece; and (3) a workpiece stack-up of two or more steel workpieces. The spot welding sequence calls for completing all of the aluminum-to-aluminum spot welds and/or all of the steel-to-steel spot welds last.

公开(公告)号：US20160346865A1

公开(公告)日：2016-12-01

申请号：US14722563

申请日：2015-05-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David R. Sigler ,  Blair E. Carlson ,  Susan M. Smyth ,  John Patrick Spicer

IPC: B23K11/11 ,  B23K11/20 ,  B23K11/18 ,  B23K11/31

CPC classification number: B23K11/115 ,  B23K11/185 ,  B23K11/20 ,  B23K11/312 ,  B23K11/314 ,  B23K2103/04 ,  B23K2103/10 ,  B23K2103/20

Abstract: A method of resistance spot welding workpiece stack-ups of different combinations of steel workpieces and aluminum workpieces includes several steps. In one step, a workpiece stack-up is brought between a first weld gun arm and a second weld gun arm. The first weld gun arm includes a first welding electrode, and the second weld gun arm includes a carrier that supports a second welding electrode and a third welding electrode. Another step involves rotating the carrier and passing electrical current through the workpiece stack-up using the first welding electrode in conjunction with either the second welding electrode or the third welding electrode depending on which electrode has been rotated into facing alignment with the first welding electrode.

Abstract translation: 钢工件和铝工件的不同组合的电阻点焊工件叠层方法包括几个步骤。 在一个步骤中，工件叠置在第一焊枪臂和第二焊枪臂之间。 第一焊枪臂包括第一焊接电极，第二焊枪臂包括支撑第二焊接电极和第三焊接电极的载体。 另一步骤是根据哪个电极已经旋转成与第一焊接电极面对齐，使第一焊接电极与第二焊接电极或第三焊接电极结合，使载体旋转并使电流通过工件叠层。

公开(公告)号：US20160038993A1

公开(公告)日：2016-02-11

申请号：US14454245

申请日：2014-08-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yongqiang Li ,  Blair E. Carlson ,  Jorge F. Arinez ,  Saul S. Lee

IPC: B21J15/14 ,  B21J15/12 ,  B21J15/02

CPC classification number: B21J15/147 ,  B21J15/025 ,  B21J15/027 ,  B21J15/12 ,  B21J15/36 ,  B29C65/0672 ,  B29C65/0681 ,  B29C65/18 ,  B29C65/562 ,  B29C65/601 ,  B29C65/603 ,  B29C65/7437 ,  B29C66/1122 ,  B29C66/21 ,  B29C66/3032 ,  B29C66/712 ,  B29C66/7212 ,  B29C66/73116 ,  B29C66/7392 ,  B29C66/73921 ,  B29C66/7394 ,  B29C66/73941 ,  B29C66/742 ,  B29C66/81423 ,  B29C66/81429 ,  B29C66/81431 ,  B29C66/8322 ,  B29C66/91921 ,  F16B25/0052 ,  F16B33/02 ,  Y10T29/49943 ,  Y10T29/49956 ,  B29K2307/04

Abstract: A method can be used for joining workpieces using a fastener. The fastener includes a first head and a shank extending from the first head along a fastener axis. The joining method includes the following steps: (a) rotating a fastener about a fastener axis; (b) moving the fastener toward the first and second workpieces while the fastener rotates about the fastener axis such that the fastener increases the temperature in the first and second workpieces in order to soften and pierce the first and second workpieces along the fastener axis; and (c) advancing the fastener through the first and second workpieces and toward an open cavity of a die after piercing the first and second workpieces while the fastener rotates about the fastener axis such that the shank is partially disposed inside the open cavity in order to form a second head.

Abstract translation: 一种方法可用于使用紧固件连接工件。 紧固件包括第一头部和从第一头沿着紧固件轴线延伸的柄部。 接合方法包括以下步骤：（a）围绕紧固件轴线旋转紧固件; （b）当紧固件围绕紧固件轴线旋转时，紧固件朝向第一和第二工件移动，使得紧固件增加第一和第二工件中的温度，以便沿着紧固件轴线软化和刺穿第一和第二工件; 以及（c）当所述紧固件围绕所述紧固件轴线旋转时，使所述紧固件穿过所述第一和第二工件并且在穿过所述第一和第二工件之后朝向模具的开放空腔延伸，使得所述柄部分地设置在所述开口腔内，以便 形成第二个头。

公开(公告)号：US20150352659A1

公开(公告)日：2015-12-10

申请号：US14724070

申请日：2015-05-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David R. Sigler ,  Blair E. Carlson ,  David Yang ,  Hui-Ping Wang

IPC: B23K11/36 ,  B23K11/20 ,  B23K11/11

CPC classification number: B23K11/36 ,  B23K11/115 ,  B23K11/20 ,  B23K2103/20

Abstract: A method of spot welding a workpiece stack-up that includes a steel workpiece and an adjacent aluminum alloy workpiece involves passing an electrical current through the workpieces and between opposed welding electrodes. The formation of a weld joint between the adjacent steel and aluminum alloy workpieces is aided by a cover plate that is located between the aluminum alloy workpiece that lies adjacent to the steel workpiece and the welding electrode disposed on the same side of the workpiece stack-up. The cover plate, which includes an intruding feature, affects the flow pattern and density of the electrical current that passes through the adjacent steel and aluminum alloy workpieces in a way that helps improve the strength of the weld joint.

Abstract translation: 点焊包括钢工件和相邻铝合金工件的工件叠层的方法包括使电流通过工件和相对的焊接电极之间。 在相邻的钢和铝合金工件之间形成焊接接头由位于与钢工件相邻的铝合金工件与设置在工件叠层的同一侧的焊接电极之间的盖板辅助 。 包括入侵特征的盖板以有助于提高焊接接头的强度的方式影响穿过相邻钢和铝合金工件的电流的流动模式和密度。

公开(公告)号：US20250115022A1

公开(公告)日：2025-04-10

申请号：US18483631

申请日：2023-10-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  SEKISUI Aerospace, Inc.

Inventor： Mary GILLIAM ,  David A. Okonski ,  Selina Xinyue Zhao ,  Blair E. Carlson ,  Scott James ,  Daniel Miranda

IPC: B32B5/02 ,  B32B7/12 ,  B32B9/00 ,  B32B9/04 ,  B32B19/06 ,  H01M50/227 ,  H01M50/229 ,  H01M50/231 ,  H01M50/24

Abstract: A multi-layer and multi-functional composite structure includes a structural reinforcing portion configured to provide structural support. The structural reinforcing portion includes reinforcing fibers consolidated in a thermoplastic resin. A protecting portion is arranged on one side of the structural reinforcing portion and configured to provide at least one of thermal blocking and fire resistance. A shielding portion is arranged on an opposite side of the structural reinforcing portion and configured to shield electromagnetic interference (EMI).