Title:
PRE-STRESSED STEEL SHEET AND METHOD OF MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/118274
Kind Code:
A1
Abstract:
The present invention relates to a pre-stressed steel sheet and a method for manufacturing same. An embodiment of the present invention provides a pre-stressed steel sheet comprising: a base material; and a plurality of weld lines formed on the base material, wherein the average spacing between each pair of the weld lines is equal to or greater than five times the width of the weld lines and equal to or less than half the width of the steel sheet. According to an aspect of the present invention, a pre-stressed steel sheet having improved bendability can be provided, and accordingly when the pre-stressed steel sheet is applied to a structural member such as a girder or beam, the bendability of a structure can be improved.
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Inventors:
LEE JAE-YIK (KR)
Application Number:
PCT/KR2020/018088
Publication Date:
June 17, 2021
Filing Date:
December 10, 2020
Export Citation:
Assignee:
POSCO (KR)
International Classes:
B23K9/04; B23K31/00; B23K33/00
Foreign References:
| KR20080072937A | 2008-08-07 | |||
| JP2004232376A | 2004-08-19 | |||
| KR100473454B1 | 2005-03-14 | |||
| KR20190001799U | 2019-07-15 | |||
| CN107175421A | 2017-09-19 | |||
| KR100473454B1 | 2005-03-14 |
Other References:
See also references of EP 4074448A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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