公开(公告)号：US20250163585A1

公开(公告)日：2025-05-22

申请号：US18875631

申请日：2023-06-16

Applicant: POSCO CO., LTD

Inventor： Kang-Min Lee ,  Hyeon-Seok Hwang ,  Kkoch-Nim Oh ,  Sea-Woong Lee ,  Ji-Eun Oh ,  Yong-Kyun Cho

IPC: C23C28/02 ,  C21D1/26 ,  C21D1/76 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40 ,  C25D3/20 ,  C25D5/50 ,  C25D7/06

Abstract: The present invention relates to a steel sheet that can be used in automobiles, etc., and relates to a steel sheet that can ensure improved plating characteristics, and a manufacturing method therefor.

公开(公告)号：US20240360541A1

公开(公告)日：2024-10-31

申请号：US18688709

申请日：2022-09-27

Applicant: POSCO CO., LTD

Inventor： Tae-Chul Kim ,  Sung-Joo Kim ,  Myung-Soo Kim ,  Bong-Hwan Yoo ,  Yong-Kyun Cho ,  Il-Ryoung Sohn

IPC: C23C2/06 ,  B32B15/01 ,  C22C18/04 ,  C23C2/20 ,  C23C2/28 ,  C23C2/40

CPC classification number: C23C2/06 ,  B32B15/013 ,  C22C18/04 ,  C23C2/20 ,  C23C2/29 ,  C23C2/40

Abstract: The present invention provides a Zn—Mg—Al plated steel sheet having excellent in corrosion resistance and bendability, and a method for manufacturing same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, bendability, and plating adhesion, and a method for manufacturing the same.

公开(公告)号：US20240263291A1

公开(公告)日：2024-08-08

申请号：US18567663

申请日：2022-06-10

Applicant: POSCO CO., LTD

Inventor： Sung-Joo Kim ,  Il-Ryoung Sohn ,  Tae-Chul Kim ,  Kwang-Won Kim ,  Sang-Tae Han ,  Myung-Soo Kim ,  Yong-Kyun Cho

IPC: C23C2/06 ,  C23C2/28 ,  C23C2/40

CPC classification number: C23C2/06 ,  C23C2/29 ,  C23C2/40

Abstract: One aspect of the present invention provides a plated steel sheet and a manufacturing method therefor, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al-based plated layer provided on at least one surface of the base steel sheet; and an Fe—Al-based inhibition layer provided between the base steel sheet and the Zn—Mg—Al-based plated layer, wherein, on the surface of the Zn—Mg—Al-based plated layer, the total area fraction of an Al single phase and MgZn2 phase is 45-60%, and the area ratio of the MgZn2 phase to the Al single phase is 1.2-3.3.

公开(公告)号：US20250003029A1

公开(公告)日：2025-01-02

申请号：US18681688

申请日：2022-09-28

Applicant: POSCO CO., LTD

Inventor： Tae-Chul Kim ,  Sung-Joo Kim ,  Myung-Soo Kim ,  Bong-Hwan Yoo ,  Yong-Kyun Cho ,  Il-Ryoung Sohn

IPC: C22C18/04 ,  C23C2/06 ,  C23C2/20 ,  C23C2/26 ,  C23C2/28

Abstract: The present invention provides a plated steel sheet having excellent in corrosion resistance and surface appearance and a method for manufacturing the same. And more specifically, the present invention provides a Zn-Mg-Al-based plated steel sheet having excellent in corrosion resistance, surface appearance and image clarity after painting, and a method for manufacturing the same.

公开(公告)号：US20240368736A1

公开(公告)日：2024-11-07

申请号：US18688712

申请日：2022-09-28

Applicant: POSCO CO., LTD

Inventor： Sung-Joo Kim ,  Tae-Chul Kim ,  Myung-Soo Kim ,  Bong-Hwan Yoo ,  Yong-Kyun Cho

IPC: C22C18/04 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

Abstract: The present invention provides a plated steel sheet excellent in corrosion resistance and excellent in at least one of weldability and phosphatability, and a manufacturing method therefor. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet excellent in corrosion resistance, weldability and phosphatability, and a manufacturing method therefor.

公开(公告)号：US20240360540A1

公开(公告)日：2024-10-31

申请号：US18688707

申请日：2022-09-28

Applicant: POSCO CO., LTD

Inventor： Tae-Chul Kim ,  Sung-Joo Kim ,  Myung-Soo Kim ,  Bong-Hwan Yoo ,  Yong-Kyun Cho ,  Il-Ryoung Sohn

IPC: C23C2/06 ,  C22C18/04 ,  C23C2/16 ,  C23C2/28

CPC classification number: C23C2/06 ,  C22C18/04 ,  C23C2/16 ,  C23C2/29

Abstract: The present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance and whiteness, and a method for manufacturing the same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, whiteness and bendability, and a method for manufacturing the same.