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1.发明申请公开(公告)号：US20200016679A1
公开(公告)日：2020-01-16
申请号：US16034712
申请日：2018-07-13
Applicant: GM Global Technology Operations LLC
Inventor： Pei-chung Wang , Michael J. Karagoulis , Spyros P. Mellas , Zhenke Teng
Abstract: A method to mitigate liquid metal embrittlement cracking in resistance welding of galvanized steels includes modifying at least one face of a steel member to create a first workpiece by: applying a zinc containing material in a first layer to the at least one face of the steel member; and spraying a second layer of a copper containing material onto the first layer of the zinc containing material. The at least one face of the first workpiece is abutted to a second workpiece of a steel material. A resistance welding operation is performed to join the first workpiece to the second workpiece. A temperature of the resistance welding operation locally melts the zinc containing material and the copper containing material to create a brass alloy of the zinc containing material and the copper containing material.
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公开(公告)号：US20230226636A1
公开(公告)日：2023-07-20
申请号：US17648040
申请日：2022-01-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Zhenke Teng , Pei-chung Wang , Jason M. Brown
CPC classification number: B23K11/115 , F16B5/08
Abstract: Methods for resistance welding, resistance-welded assemblies, and vehicles including resistance-welded assemblies are provided. An exemplary resistance welding method includes compressing a workpiece stack-up with an interface material between first and second workpieces to squeeze a portion of the interface material to a reduced thickness. After compressing the workpiece stack-up, the first welding electrode contacts the first workpiece at an operating contact area between the first welding electrode and the first workpiece that is greater than an initial contact area. The method also includes passing an electrical current between the welding electrodes to form a molten weld pool within the workpieces, and ceasing the passing of the electrical current between the welding electrodes to allow the molten weld pool to solidify into a weld nugget that forms all or part of a weld joint between the workpieces.
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公开(公告)号：US11224933B2
公开(公告)日：2022-01-18
申请号：US16260431
申请日：2019-01-29
Applicant: GM Global Technology Operations LLC
Inventor： Michael J. Karagoulis , Zhenke Teng , Joseph Seme
Abstract: A tip dresser cutter including a circumferential portion having a circular shape rotatable about an axis of rotation, a center portion located radially inward from the circumferential portion proximate the axis of rotation, and a cutting flute extending radially between the center portion and the circumferential portion. The cutting flute including a leading edge, a trailing edge, a radially inward canted surface extending between the leading edge and the trailing edge. The radially inward canted surface includes a first section extending between the center portion and a first location on the cutting flute and a second section extending between the first location on the cutting flute and a second location on the cutting flute. The second section of the radially inward canted surface including a curved portion that is parallel to a plane of rotation of the cutting flute.
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公开(公告)号：US20210107086A1
公开(公告)日：2021-04-15
申请号：US16598474
申请日：2019-10-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Pei-chung Wang , Michael J. Karagoulis , Spyros P. Mellas , Zhenke Teng
Abstract: A method of forming an assembly includes providing a metallic first workpiece having base and a first layer disposed on the base and adhering a second layer onto the first layer. One of the first and second layers is formed of a zinc-based material formed of at least a majority of zinc, and the other of the first and second layers is formed of a metallic alloying material having a melting point higher than the melting point of the zinc-based material. Preferably, the first layer is formed of the zinc-based material, and the second layer is formed of the metallic alloying material with the higher melting point. A metallic second workpiece is disposed in contact with the second layer. A welding operation is performed to join the first workpiece to the second workpiece. A welded assembly is also provided.
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公开(公告)号：US20240157463A1
公开(公告)日：2024-05-16
申请号：US17987913
申请日：2022-11-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Steven Cipriano , Pei-chung Wang , Zhenke Teng , Anthony V. Minatel
CPC classification number: B23K11/20 , B23K11/115 , B23K35/3613 , B23K37/00 , B23K2103/04
Abstract: Methods and systems for joining multiple workpieces are provided. In one example, the method includes dispensing adhesive on a first workpiece. A second workpiece is contacted with the adhesive such that the adhesive is disposed between the first and second workpieces. Resistance heating is produced in the first and second workpieces at first processing conditions to partially cure the adhesive and affix the first and second workpieces together to form a partially cured, adhesive-joined workpiece assembly. The partially cured, adhesive-joined workpiece assembly is exposed to heat at second processing conditions to substantially fully cure the adhesive.
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Patent Agency Ranking
公开(公告)号：US20240033844A1
公开(公告)日：2024-02-01
申请号：US17814869
申请日：2022-07-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Zhenke Teng , John A. Gerke , Pei-chung Wang , Robert W. Watson , Russell A. Webster , Jason M. Brown
CPC classification number: B23K11/3054 , B23K11/115 , B23K11/24 , B23K2101/006
Abstract: Welding electrodes, methods, and vehicles are provided. The welding electrodes include a body that includes a weld face on a distal end of the body configured to contact a workpiece and apply an electrical current thereto. The body has a maximum diameter of 13 millimeters or less. The welding electrode includes an insulative material covering at least a portion of the body, the insulative material configured to mitigate current shunting upon contact between the insulative material and a workpiece of a workpiece stack-up while using the welding electrode to resistance weld the workpiece stack-up.
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公开(公告)号：US20200055139A1
公开(公告)日：2020-02-20
申请号：US16103203
申请日：2018-08-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Pei-chung Wang , Michael J. Karagoulis , Zhenke Teng , Spyros P, Mellas
Abstract: A method of manufacturing a resistance weld in at least three overlying sheet metal layers includes the steps of: (1) providing a first sheet metal layer having a first thickness; (2) providing a second sheet metal layer having a second thickness; (3) providing a filler material on the second sheet metal layer; (4) providing a third sheet metal layer having a third thickness onto the filler material and the second sheet metal layer wherein the third thickness is less than each of the first and the second thicknesses; (5) pressing a pair of welding electrodes against a pair of opposing outer surfaces with the filler material disposed therebetween; and (6) passing an electric current between the pair of electrodes through the filler material and the first, second, and third sheet metal layers to form a weld nugget which penetrates into at least the first and second sheet metal layers.
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8.发明申请公开(公告)号：US20190314914A1
公开(公告)日：2019-10-17
申请号：US15952645
申请日：2018-04-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Pei-chung Wang , Michael J. Karagoulis , Zhenke Teng
Abstract: A method of resistance spot brazing a workpiece stack-up that includes a first thin-gauge steel workpiece and a second thin-gauge steel workpiece. The method includes several steps. A first step involves applying a filler material to a surface of the first thin-gauge steel workpiece. A second step involves bringing a surface of the second thin-gauge steel workpiece to adjoin the filler material. A third step involves clamping a first welding electrode and a second welding electrode on the first and second thin-gauge steel workpieces and over the filler material. A fourth step involves passing electrical current between the first and second welding electrodes and hence through the filler material. And a fifth step involves terminating passage of the electrical current in order to establish a brazed joint between the first and second thin-gauge steel workpieces.
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公开(公告)号：US20230390857A1
公开(公告)日：2023-12-07
申请号：US17805097
申请日：2022-06-02
Inventor： Zhenke Teng , Robert Watson , Russell A. Webster, JR. , Jason M. Brown , Joseph Seme
CPC classification number: B23K11/3063 , B23B5/166 , B23B1/00 , B23B2210/00
Abstract: A system for electrode dressing including a cutter with a rim and a center land supported on the rim by a number of flutes defining openings between the flutes. The flutes and the center land define a cutting profile of the cutter. The cutter is configured to rotate about an axis passing through the center land. Cutting edges are disposed on the flutes and are made of a first material having a Vickers hardness (HV) of at least 850 HV, overlaid by a second material having a Vickers hardness of at least 3200 HV. The cutter profile comprises a face cutting profile extending radially outward from the axis that is disposed at an angle of less than six-degrees relative to a radial normal of the cutter.
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10.发明授权公开(公告)号：US11752566B2
公开(公告)日：2023-09-12
申请号：US17581087
申请日：2022-01-21
Applicant: GM Global Technology Operations LLC
Inventor： Zhenke Teng , Andrew Clay Bobel , Jason M. Brown , Thomas R. Jones , Michael J. Karagoulis
IPC: C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , B23K11/11 , B32B15/01 , B23K11/16 , B23K101/00 , B23K101/18
CPC classification number: B23K11/115 , B23K11/166 , B32B15/013 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , B23K2101/006 , B23K2101/18
Abstract: A steel workpiece includes an alloy substrate comprising iron, about 1.4 to about 2.0 weight percent aluminum, and about 0 to about 1.0 weight percent silicon. The steel workpiece further includes a coating comprising zinc. A method of spot welding a workpiece stack-up that includes a pair of the steel workpieces includes providing the stack-up, contacting first and second electrodes to the steel workpieces, passing an electrical current through the stack-up, forming a weld nugget from molten mixing of the alloy substrates of the pair of steel workpieces, forming a boundary layer between the coating and the alloy substrate from dispersion of the coating into the alloy substrate and reaction of the zinc with the aluminum and the silicon to prevent molten mixing of the coating within the alloy substrate, and ceasing passage of the electrical current.
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