Title:
ELECTROMAGNETIC STEEL STRIP FRICTION STIR WELDING METHOD, ELECTROMAGNETIC STEEL STRIP MANUFACTURING METHOD, FRICTION STIR WELDING DEVICE, AND ELECTROMAGNETIC STEEL STRIP MANUFACTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/042773
Kind Code:
A1
Abstract:
Provided is an electromagnetic steel strip friction stir welding method that can, under high processing efficiency, suppress fracturing of a coil weld section on a manufacturing line, said fracturing being due to degradation in the shape or degradation in the mechanical properties of the coil weld section. Later-cooling-style double-sided friction stir welding is performed according to conditions such that the respective steel compositions of a weld section and a thermal process-affected section that are formed due to the welding will be ferrite phase-based compositions and simultaneously satisfy expressions (1)-(4).
Inventors:
MATSUSHITA MUNEO (JP)
IWATA SHOHEI (JP)
TOMITA KAI (JP)
IWATA SHOHEI (JP)
TOMITA KAI (JP)
Application Number:
PCT/JP2023/015081
Publication Date:
February 29, 2024
Filing Date:
April 13, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K20/12; B21B15/00; C22C38/00; C22C38/60
Domestic Patent References:
| WO2018070317A1 | 2018-04-19 |
Foreign References:
| JP2020124739A | 2020-08-20 | |||
| JP4838385B2 | 2011-12-14 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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