Title:
RESISTANCE SPOT WELDING ELECTRODE CAP
Document Type and Number:
WIPO Patent Application WO/2019/196494
Kind Code:
A1
Abstract:
Provided is a resistance spot welding electrode cap; a recess (33) is provided at the center of the welding contact interface (3) of the electrode cap; during welding, due to the presence of the recess (33), the area of contact between the electrode cap and a metal workpiece to be soldered is reduced; in the initial stage, the overall heat generation is concentrated on the outer ring of the weld point and heat dissipation becomes slower, helping a weld nugget to form from the outside to the inside; furthermore, due to the presence of the groove (33), the metal workpiece expands toward the groove (33) at the center of the electrode, thereby increasing the size of the weld nugget and reducing splash and deformation; in comparison with conventional electrode caps, the welding current required to form weld points of the same size is lower, saving on electricity costs; furthermore, weld points obtained using the same current have higher strength and stability with fewer welding defects.
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Inventors:
YANG SHANGLU (CN)
WANG JUNYAN (CN)
TAO WU (CN)
WANG JUNYAN (CN)
TAO WU (CN)
Application Number:
PCT/CN2018/121780
Publication Date:
October 17, 2019
Filing Date:
December 18, 2018
Export Citation:
Assignee:
SHANGHAI INSTITUTES OF OPTICS AND FINE MECH CHINESE ACADEMY OF SCIENCES (CN)
International Classes:
B23K11/30
Foreign References:
| US20030192863A1 | 2003-10-16 | |||
| US20030192863A1 | 2003-10-16 | |||
| CN104043898A | 2014-09-17 | |||
| CN106736000A | 2017-05-31 | |||
| CN107520550A | 2017-12-29 | |||
| CN104084686A | 2014-10-08 | |||
| JP2015093283A | 2015-05-18 |
Attorney, Agent or Firm:
XU & PARTNERS, LLC. (CN)
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