Title:
DISSIMILAR METAL JOINT AND RESISTANCE WELDING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/065797
Kind Code:
A1
Abstract:
Provided are a resistance welding method for a dissimilar metal joint, and a dissimilar metal joint, welding a laminated structure having an outer layer composed of iron or an iron-based alloy, and an inner layer composed of metal having a density less than 5 g/cm3 or a melting point lower than 800°C. The resistance welding method comprises a spatter stage, the light metal or low-melting-point metal in the middle of the laminated structure being separated in spattering manner in the spatter stage, so that the iron or iron-based alloy layers in the welding interface directly form a connecting structure to complete welding. The present resistance welding method can prevent formation of brittle intermetallic compounds in a dissimilar joint welding interface, improving mechanical properties of the joint and achieving a reliable connection between dissimilar metals.
Inventors:
LI MINGFENG (CN)
YANG SHANGLU (CN)
TAO WU (CN)
WANG YANJUN (CN)
YANG SHANGLU (CN)
TAO WU (CN)
WANG YANJUN (CN)
Application Number:
PCT/CN2022/113073
Publication Date:
April 27, 2023
Filing Date:
August 17, 2022
Export Citation:
Assignee:
SHANGHAI INST OPTICS & FINE MECH CAS (CN)
International Classes:
B23K11/20; B23K11/11
Foreign References:
| CN114211104A | 2022-03-22 | |||
| CN113857637A | 2021-12-31 | |||
| JPH07328774A | 1995-12-19 | |||
| JP2003236673A | 2003-08-26 | |||
| CN102500901A | 2012-06-20 | |||
| CN104249214A | 2014-12-31 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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