公开(公告)号：US10982309B2

公开(公告)日：2021-04-20

申请号：US16327426

申请日：2017-08-22

Applicant: POSCO

Inventor： Sang-Heon Kim ,  Hyeon-Seok Hwang ,  Suk-Kyu Lee ,  Sun-Ho Jeon ,  Yon-Kyun Song ,  Bong-Hwan Yoo

IPC: C23C2/28 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40 ,  C23C2/26 ,  C22C18/00 ,  C21D9/46 ,  C22C18/04 ,  C23C2/20

Abstract: Disclosed are a hot-rolled galvanized steel sheet having excellent galling resistance and formability, and a method for manufacturing the same. The hot-rolled galvanized steel sheet, includes: a base steel; and a hot-rolled galvanizing layer formed on the surface of the base steel, wherein the hot-rolled galvanizing layer provides a hot-rolled galvanized steel sheet having a Mn crystallite having a size of 10 μm or less between the resin dendrites of zinc that form sequins.

公开(公告)号：US10544497B2

公开(公告)日：2020-01-28

申请号：US15539622

申请日：2015-12-24

Applicant: POSCO

Inventor： Min-Suk Oh ,  Sang-Heon Kim ,  Tae-Chul Kim ,  Jong-Sang Kim ,  Bong-Hwan Yoo ,  Hyun-Chu Yun

IPC: C22C18/00 ,  C23C2/06 ,  C23C2/16 ,  C23C2/40 ,  C23C2/02 ,  C22C18/04

Abstract: A Zn alloy plated steel sheet having excellent phosphatability and spot weldability and a method for manufacturing the same are provided. In the Zn alloy plated steel sheet including a base steel sheet and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.5-2.8%, Mg: 0.5-2.8%, and a remainder of Zn and inevitable impurities, and a cross-sectional structure of the Zn alloy plating layer includes, by area percentage, more than 50% of a Zn single phase structure and less than 50% of a Zn—Al—Mg-based intermetallic compound. A surface structure of the Zn alloy plating layer includes, by area percentage, 40% or less of a Zn single phase structure and 60% or more of a Zn—Al—Mg-based intermetallic compound.

公开(公告)号：US11248287B2

公开(公告)日：2022-02-15

申请号：US16773101

申请日：2020-01-27

Applicant: POSCO

Inventor： Min-Suk Oh ,  Sang-Heon Kim ,  Tae-Chul Kim ,  Jong-Sang Kim ,  Hyun-Chu Yun ,  Bong-Hwan Yoo ,  Il-Ryoung Sohn

IPC: B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C22C18/04 ,  C23C30/00 ,  C23C28/02 ,  C23C2/06 ,  C23C2/40 ,  C23C2/16 ,  C23C2/28 ,  C23C2/02 ,  C22C18/00 ,  C23C2/26 ,  C22C38/08

Abstract: Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.

公开(公告)号：US09745654B2

公开(公告)日：2017-08-29

申请号：US14413530

申请日：2013-07-23

Applicant: POSCO

Inventor： Min-Suk Oh ,  Young-Sool Jin ,  Sang-Heon Kim ,  Su-Young Kim ,  Bong-Hwan Yoo

IPC: B32B15/01 ,  C23C2/06 ,  C23C2/20 ,  C22C18/04 ,  C22C18/00 ,  C23C2/16 ,  C23C2/28

CPC classification number: C23C2/06 ,  C22C18/00 ,  C22C18/04 ,  C23C2/16 ,  C23C2/20 ,  C23C2/28 ,  Y10T428/12799

Abstract: Provided is a hot dip zinc alloy plated steel sheet which is widely used in vehicles, domestic appliances, construction materials or the like and a method for manufacturing the same. A Zn—Al—Mg hot dip zinc alloy plating bath is used for manufacturing the hot dip zinc alloy plated steel strip, and a small amount of Ga or In is added to the plating bath for inhibiting an oxidation reaction of Mg in the plating bath so as to obtain excellent corrosion resistance and external surface of the plated steel sheet which is manufactured at this point.

公开(公告)号：US10584407B2

公开(公告)日：2020-03-10

申请号：US15539654

申请日：2015-12-24

Applicant: POSCO

Inventor： Min-Suk Oh ,  Sang-Heon Kim ,  Tae-Chul Kim ,  Jong-Sang Kim ,  Hyun-Chu Yun ,  Bong-Hwan Yoo ,  Il-Ryoung Sohn

IPC: C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C28/02 ,  C22C38/06 ,  C22C18/04 ,  C22C38/02 ,  C23C30/00 ,  C22C38/04 ,  B32B15/01 ,  B32B15/18 ,  B32B15/04

Abstract: Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.

公开(公告)号：US10550457B2

公开(公告)日：2020-02-04

申请号：US15539654

申请日：2015-12-24

Applicant: POSCO

Inventor： Min-Suk Oh ,  Sang-Heon Kim ,  Tae-Chul Kim ,  Jong-Sang Kim ,  Hyun-Chu Yun ,  Bong-Hwan Yoo ,  Il-Ryoung Sohn

IPC: C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C28/02 ,  C22C38/06 ,  C22C18/04 ,  C22C38/02 ,  C23C30/00 ,  C22C38/04 ,  B32B15/01 ,  B32B15/18 ,  B32B15/04

Abstract: Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.

公开(公告)号：US12270108B2

公开(公告)日：2025-04-08

申请号：US18010868

申请日：2021-06-18

Applicant: POSCO

Inventor： Il-Ryoung Sohn ,  Sung-Joo Kim ,  Tae-Chul Kim ,  Bong-Hwan Yoo ,  Myung-Soo Kim ,  Jong-Sang Kim ,  Sang-Tae Han ,  Kwang-Won Kim

IPC: C23C2/06 ,  C21D8/02 ,  C22C18/00 ,  C22C18/04 ,  C23C2/00 ,  C23C2/02 ,  C23C2/40

Abstract: The present invention relates to a plated steel sheet having excellent corrosion resistance, workability and surface quality, and at the same time, capable of reducing occurrence of liquid metal embrittlement (LME).

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：US20240052471A1

公开(公告)日：2024-02-15

申请号：US18265370

申请日：2021-12-20

Applicant: POSCO Co., Ltd

Inventor： Tae-Chul Kim ,  Il-Ryoung Sohn ,  Bong-Hwan Yoo

IPC: C23C2/06 ,  C21D9/46 ,  C21D1/84 ,  C22C18/04 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  B32B15/01 ,  C23C2/20 ,  C23C2/40

CPC classification number: C23C2/06 ,  C21D9/46 ,  C21D1/84 ,  C22C18/04 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C21D6/005 ,  C21D6/008 ,  B32B15/013 ,  C23C2/20 ,  C23C2/40

Abstract: The present invention relates to a plated steel sheet which can be used for automobiles, home appliances, building materials, etc. and a method for manufacturing same and, more particularly, to a zinc alloy plated steel sheet having excellent adhesion to an adhesive and a method for manufacturing same.

公开(公告)号：US20150159253A1

公开(公告)日：2015-06-11

申请号：US14413530

申请日：2013-07-23

Applicant: POSCO

Inventor： Min-Suk Oh ,  Young-Sool Jin ,  Sang-Heon Kim ,  Su-Young Kim ,  Bong-Hwan Yoo

IPC: C23C2/06 ,  C22C18/00 ,  C22C18/04 ,  C23C2/16

CPC classification number: C23C2/06 ,  C22C18/00 ,  C22C18/04 ,  C23C2/16 ,  C23C2/20 ,  C23C2/28 ,  Y10T428/12799

Abstract: Provided is a hot dip zinc alloy plated steel sheet which is widely used in vehicles, domestic appliances, construction materials or the like and a method for manufacturing the same. A Zn—Al—Mg hot dip zinc alloy plating bath is used for manufacturing the hot dip zinc alloy plated steel strip, and a small amount of Ga or In is added to the plating bath for inhibiting an oxidation reaction of Mg in the plating bath so as to obtain excellent corrosion resistance and external surface of the plated steel sheet which is manufactured at this point.

Abstract translation: 提供广泛用于车辆，家用电器，建筑材料等的热浸锌合金镀覆钢板及其制造方法。 使用Zn-Al-Mg热浸锌合金电镀浴来制造镀锌钢合金板，并且在镀浴中加入少量的Ga或In，以抑制镀液中的Mg的氧化反应 从而获得在此制造的镀覆钢板的优异的耐腐蚀性和外表面。