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公开(公告)号：US20240316683A1
公开(公告)日：2024-09-26
申请号：US18579606
申请日：2022-06-21
申请人： ArcelorMittal
发明人： Zhifen WANG , Alexis CHIOCCA
IPC分类号： B23K11/16 , B23K11/11 , B23K11/20 , B23K11/24 , B23K103/04 , B23K103/10
CPC分类号： B23K11/163 , B23K11/115 , B23K11/20 , B23K11/24 , B23K2103/04 , B23K2103/10
摘要： A welding method for the manufacture of an assembly of at least two steel substrates spot welded together through at least one spot welded joint, including A. provision of substrates including a press hardened steel part obtained by press hardening of a steel sheet coated with an aluminium based coating, B. application of a spot-welding cycle with welding electrodes and a spot-welding power source applying a current, the cycle including: at least three pulsations, each having the same maximum pulsation current (Cp) applied through the substrates, each pulsation duration p being identical and set from 20 to 60 ms, each pulsation being followed by the same cooling time c set from 30 to 50 ms, wherein the welding parameter Wp value is at least 0.8, Wp being defined as Wp=(t×c)/p t being the average thickness of the substrate in mm, c being the cooling time in ms, p being the pulsation duration in ms.
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公开(公告)号：US11904402B2
公开(公告)日：2024-02-20
申请号：US17058990
申请日：2019-06-10
申请人： Car-O-Liner Group AB
发明人： Anders Bergström , Tony Hedlund
CPC分类号： B23K11/24 , B23K11/115 , B23K11/256 , B23K11/257 , B23K11/258 , B23K11/28
摘要： The present disclosure generally relates to a welding machine adapted for performing a spot welding process on a workpiece, wherein the welding machine is specifically adapted for automatically applying pre-conditioning a welding pulse portion to the workpiece prior to performing the spot welding process. The present disclosure also relates to a corresponding method and computer program product.
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公开(公告)号：US11545911B2
公开(公告)日：2023-01-03
申请号：US16959009
申请日：2019-08-08
摘要： Provided is an inverter power supply including a measurement function of measuring deterioration of a rectifier element such as a diode.
The inverter power supply includes a step-down stabilization unit that applies a reverse voltage increasing gradually to diodes, an isolation amplifier that detects a current value of a current flowing to the diodes when the reverse voltage is applied, and an inverter control unit that decides that the diodes have deteriorated when the detected current value is larger than a determination current value for determining deterioration of the diodes, and decides that the diodes have not deteriorated when the detected current value is smaller than the determination current value.-
公开(公告)号：US11504796B2
公开(公告)日：2022-11-22
申请号：US15024164
申请日：2014-09-12
发明人： Chikaumi Sawanishi , Yasuaki Okita , Rinsei Ikeda
IPC分类号： B23K11/24 , B23K11/25 , B23K11/11 , B23K11/16 , B23K101/34 , B23K101/18 , B23K103/04
摘要： Proposed is a resistance spot welding method to join parts to be welded which are a plurality of overlapping metal sheets, including: dividing a current pattern into two or more steps for welding; before actual welding, performing test welding; and subsequently, as actual welding, performing adaptive control welding, in which the two or more steps for welding include a step of securing a current path between the sheets directly below the electrodes and a subsequent step of forming a nugget having a predetermined diameter, and a welding interval time is provided between these steps. This method thus yields a good nugget without causing splashing even under special welding conditions.
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公开(公告)号：US20220293325A1
公开(公告)日：2022-09-15
申请号：US15733924
申请日：2020-03-24
申请人： KOYO GIKEN Inc.
发明人： Kouji KAI , Kazuki HOUZAN , Tuyosi SHINOZAKI , Mitoshi KAI
摘要： A flat, electrically and thermally conductive flat surface group is formed in the common connection region 32 of the secondary coil 13. The flat conductive surface group is directly and mechanically joined to the connecting surfaces of the first conductor plate 42, the second conductor plate 44, and the third conductor plate 46, respectively. The first conductor plate 42, the second conductor plate 44, and the third conductor plate 46 cover the entire common connection region 32. The annular first conductor plate 42 occupies the maximum area. The refrigerant can be circulated in the annular cavity provided inside the first conductor plate 42 to efficiently cool the whole.
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公开(公告)号：US11007598B2
公开(公告)日：2021-05-18
申请号：US15756351
申请日：2016-09-02
摘要： The present invention provides a spot welding method for a member to be welded constituted of a plurality of steel sheets that are overlapped with each other at at least a welding zone, in which at least an overlapped face of at least one of the plurality of steel sheets at the welding zone is coated with zinc plating, a total sheet thickness t (mm) of the plurality of steel sheets is 1.35 mm or more, a squeeze time St (seconds) from the time when welding electrodes are brought into contact with the member to be welded to the time when electric current flow for welding starts satisfies “0.020≤St”, and a hold time Ht( seconds) after welding from the time when electric current flow for welding between the welding electrodes ends to the time when the welding electrodes and the member to be welded are brought out of contact satisfies “0.015t2+0.020≤Ht”.
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公开(公告)号：US20200348700A1
公开(公告)日：2020-11-05
申请号：US16931433
申请日：2020-07-16
申请人： Pacesetter, Inc.
发明人： Justin King , Russell Bruch , Nicholas R. Hamor , Kurt Erickson
摘要： A resistance weld shielding control system includes a computer that is executed to control a fixture to receive and hold at least one part to be welded. The computer also controls one or more electrodes to apply electrical energy to the part for welding the at least one part, and controls a gas delivery system to direct an inert gas onto the part for shielding the part from the ambient atmosphere via a nozzle. The nozzle is configured in the fixture such that the fixture holds the nozzle in a fixed physical relationship to the part.
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8.发明授权公开(公告)号：US10821540B2
公开(公告)日：2020-11-03
申请号：US14741465
申请日：2015-06-17
发明人： Yasuhiro Kawai , Kazuhiko Yamaashi , Haruhiko Kobayashi , Mitsugu Kaneko , Noriko Kurimoto , Masami Nakakura , Teppei Sonoda
IPC分类号： B23K11/06 , B23K11/25 , B25J9/16 , B23K11/36 , B23K11/30 , B23K11/24 , B23K11/31 , B23K101/00 , B23K101/04 , B23K103/04
摘要： The seam welding apparatus includes a pair of rotating electrodes, an electrode supporting frame, a distance measuring means, and a controller. The electrode supporting frame supports the pair of rotating electrodes. The distance measuring means is provided on the electrode supporting frame and measures a distance to an edge of the steel plate. The controller controls the robot to adjust a running direction of the rotating electrodes so that a deviation comes into zero when a distance actually measured by the distance measuring means deviates from a predetermined distance. Thereby, it is accomplished that the seam welding apparatus is downsized as well as uninfluenced by the surface state and/or shape of workpiece (steel plate).
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公开(公告)号：US20200336082A1
公开(公告)日：2020-10-22
申请号：US16959009
申请日：2019-08-08
摘要： Provided is an inverter power supply including a measurement function of measuring deterioration of a rectifier element such as a diode.The inverter power supply includes a step-down stabilization unit that applies a reverse voltage increasing gradually to diodes, an isolation amplifier that detects a current value of a current flowing to the diodes when the reverse voltage is applied, and an inverter control unit that decides that the diodes have deteriorated when the detected current value is larger than a determination current value for determining deterioration of the diodes, and decides that the diodes have not deteriorated when the detected current value is smaller than the determination current value.
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公开(公告)号：US10695857B2
公开(公告)日：2020-06-30
申请号：US15723679
申请日：2017-10-03
IPC分类号： G06F30/337 , B23K9/095 , G05B19/418 , B23K11/11 , B23K11/25 , B23K11/24 , B23K31/12 , B23K101/00
摘要： A computer-implemented method for reducing spot welds in a parameterized workpiece model includes generating a new design space (DS) from an original spot weld DS. The new DS includes a plurality of spot weld locations from the parameterized workpiece model with the original spot weld DS. The new DS is optimized to have a fewer number of spot weld locations than the original DS. The processor identifies a plurality of offending spot weld locations of the remaining spot weld locations in the new DS and a plurality of conforming spot weld locations of the remaining spot weld locations. The processor removes all but one optimized extension candidate from processor-selected groupings of welds while enforcing a minimum distance requirement. The processor outputs an inter-distance constrained parameterized workpiece model with an optimized extension candidate in each of the plurality of extended DSs to an operatively connected output processor.
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