Title:
SYSTEMS AND METHODS FOR IMPROVING ALUMINUM RESISTANCE SPOT WELDING
Document Type and Number:
WIPO Patent Application WO/2023/130792
Kind Code:
A1
Abstract:
A method of joining metal substrates includes applying a compressive force to at least two overlapping metal substrates, applying an electric current at a first level, and ramping the electric current from the first level to a second level greater than the first level over a first time period. The method also includes, after the first time period, applying the electric current at the second level for a second time period, and, after the second time period, discontinuing the electric current for a third time period. The method further includes, after the third time period, applying the electric current at a third level for a fourth time period, and ramping the electric current from the third level to a fourth level less than the third level over a fifth time period after the fourth time period.
Inventors:
WU FENG (US)
DUAN KEVIN (US)
LIN YAN (US)
GUO YU (US)
LIN DECHAO (US)
DUAN KEVIN (US)
LIN YAN (US)
GUO YU (US)
LIN DECHAO (US)
Application Number:
PCT/CN2022/125035
Publication Date:
July 13, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
NOVELIS INC (US)
International Classes:
B23K11/11; B23K11/18; B23K11/30; B23K103/10
Domestic Patent References:
| WO2019203363A1 | 2019-10-24 |
Foreign References:
| US20160144451A1 | 2016-05-26 | |||
| JP2006224150A | 2006-08-31 | |||
| US20210039189A1 | 2021-02-11 | |||
| CN112570867A | 2021-03-30 |
Other References:
BIN NIU ET AL: "Dynamic electrode force control of resistance spot welding robot", ROBOTICS AND BIOMIMETICS (ROBIO), 2009 IEEE INTERNATIONAL CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 19 December 2009 (2009-12-19), pages 2421 - 2426, XP031642018, ISBN: 978-1-4244-4774-9
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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