Method For Manufacturing Tailor Welded Blank Using Steel Sheet For Hot

Method For Manufacturing Tailor Welded Blank Using Steel Sheet For Hot Pressing Having Al Fe Based Intermetallic Alloy Layer

Abstract: An embodiment of the present invention provides a method for manufacturing a tailor welded blank using a steel sheet for hot pressing having an Al-Fe-based intermetallic alloy layer, the method comprising the steps of: preparing a plated steel sheet having a base steel sheet and an aluminum-based plated layer formed on one surface or both surfaces of the base steel sheet; heat-treating the plated steel sheet so that the aluminum-based plated layer becomes an Al-Fe-based intermetallic alloy layer; and subjecting the heat-treated plated steel sheet to butt welding, wherein, before the welding, a part or the entirety of the Al-Fe-based intermetallic alloy layer located in an area to be welded is removed.

Patent Information

Application #

Filing Date

21 April 2023

Publication Number

47/2023

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

Parent Application

Applicants

POSCO CO., LTD

6261, Donghaean-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37859

Inventors

1. UHM, Sang-Ho

POSCO 100, Songdogwahak-ro Yeonsu-gu, Incheon 21985

2. OH, Jin-Keun

c/o Gwangyang Iron & Steel Works, 20-26, Pokposarang-gil Gwangyang-si, Jeollanam-do 57807

Specification

Documents

Application Documents

#	Name	Date
1	202317029151-STATEMENT OF UNDERTAKING (FORM 3) [21-04-2023(online)].pdf	2023-04-21
2	202317029151-REQUEST FOR EXAMINATION (FORM-18) [21-04-2023(online)].pdf	2023-04-21
3	202317029151-PROOF OF RIGHT [21-04-2023(online)].pdf	2023-04-21
4	202317029151-PRIORITY DOCUMENTS [21-04-2023(online)].pdf	2023-04-21
5	202317029151-POWER OF AUTHORITY [21-04-2023(online)].pdf	2023-04-21
6	202317029151-FORM 18 [21-04-2023(online)].pdf	2023-04-21
7	202317029151-FORM 1 [21-04-2023(online)].pdf	2023-04-21
8	202317029151-FIGURE OF ABSTRACT [21-04-2023(online)].pdf	2023-04-21
9	202317029151-DRAWINGS [21-04-2023(online)].pdf	2023-04-21
10	202317029151-DECLARATION OF INVENTORSHIP (FORM 5) [21-04-2023(online)].pdf	2023-04-21
11	202317029151-COMPLETE SPECIFICATION [21-04-2023(online)].pdf	2023-04-21
12	202317029151.pdf	2023-05-02
13	202317029151-FORM-26 [11-05-2023(online)].pdf	2023-05-11
14	202317029151-FORM-26 [15-05-2023(online)].pdf	2023-05-15
15	202317029151-Others-170523.pdf	2023-06-27
16	202317029151-GPA-170523.pdf	2023-06-27
17	202317029151-Correspondence-170523.pdf	2023-06-27
18	202317029151-FORM 3 [28-09-2023(online)].pdf	2023-09-28
19	202317029151-FER.pdf	2025-10-06