Title:
SPOT WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/033364
Kind Code:
A1
Abstract:
Provided is a spot welding method capable of reliably welding a metal sheet laminate while suppressing the occurrence of expulsion. In the spot welding method, a pulse current is applied in a first current application step and a second current application step separately using a DC chopping control technique. In the DC chopping control technique, the pulse waveform of a pulse current is generated by switching on and off the application of current to a pair of electrodes 12, 22 by means of a current switch 28. The pulse current in the first current application step is set to the same peak current value A1 and to a greater value of power compared to the pulse current in the second current application step.
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Inventors:
WATANABE SHINYA (JP)
SAITO HITOSHI (JP)
TAN XIHAO (JP)
SAITO HITOSHI (JP)
TAN XIHAO (JP)
Application Number:
PCT/JP2020/016280
Publication Date:
February 25, 2021
Filing Date:
April 13, 2020
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
B23K11/11
Foreign References:
| JP2007268604A | 2007-10-18 | |||
| JP2019051523A | 2019-04-04 | |||
| JPH1133736A | 1999-02-09 | |||
| JP2010082666A | 2010-04-15 |
Attorney, Agent or Firm:
SATO & ASSOCIATES (JP)
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