Title:
WELDING METHOD FOR HOT-ROLLED STEEL PLATE FOR USE IN AUTOMOBILE
Document Type and Number:
WIPO Patent Application WO/2022/088637
Kind Code:
A1
Abstract:
A welding method for a hot-rolled steel plate for use in an automobile, comprising the following steps: assembling and fixing a first steel plate and a second steel plate, and welding an assembling part by using a laser welding apparatus, the tensile strength of the first steel plate being σ1, the tensile strength of the second steel plate being σ2, and σ1/σ2 being greater than 2. According to the method, a low-strength steel plate and a high-strength steel plate are subjected to laser welding, thereby reducing the degree of alloying of a welding seam, inhibiting the formation of high-hardness martensite in the welding seam, and solving the problem of belt breakage during acid rolling.
Inventors:
WANG XIAONAN (CN)
SUN QIAN (CN)
QI XIAONAN (CN)
LIU HONGLIANG (CN)
CHEN YU (CN)
SUN QIAN (CN)
QI XIAONAN (CN)
LIU HONGLIANG (CN)
CHEN YU (CN)
Application Number:
PCT/CN2021/090999
Publication Date:
May 05, 2022
Filing Date:
April 29, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
B21B15/00; B23K26/24; C22C38/02
Domestic Patent References:
| WO2020194687A1 | 2020-10-01 |
Foreign References:
| CN112404129A | 2021-02-26 | |||
| CN102162574A | 2011-08-24 | |||
| CN103753023A | 2014-04-30 | |||
| CN109072327A | 2018-12-21 | |||
| JP2019084847A | 2019-06-06 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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