公开(公告)号：US10982309B2

公开(公告)日：2021-04-20

申请号：US16327426

申请日：2017-08-22

申请人： POSCO

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

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

摘要： 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：US10087511B2

公开(公告)日：2018-10-02

申请号：US14654507

申请日：2013-12-19

申请人： POSCO

发明人： Sun-Ho Jeon ,  Kwang-Geun Chin ,  Won-Tae Cho

IPC分类号： C23C2/02 ,  C23C2/40 ,  B32B15/01 ,  C23C2/06 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/34 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C21D8/02

摘要： There are provided a method for manufacturing a high manganese hot-dip galvanized steel sheet having superior coatability and ultra-high strength, and a high manganese hot-dip galvanized steel sheet manufactured by the method. The method includes: cold rolling a hot-rolled steel sheet to form a cold-rolled steel sheet, the hot-rolled steel sheet including, by wt %, C: 0.3% to 1%, Mn: 8% to 25%, Si: 0.1% to 3%, Al: 0.01% to 8%, Cr: 0.1% to 2%, Ti: 0.01% to 0.2%, B: 0.0005% to 0.01%, Ni: 0.01% to 2%, Sn: 0.06% to 0.2%, and a balance of Fe and inevitable impurities; heating the cold-rolled steel sheet; cooling the heated steel sheet to, or maintaining the heated steel sheet; and performing a hot-dip galvanizing process on the cooled or temperature-maintained steel sheet by dipping the cooled or temperature-maintained steel sheet into a hot-dip galvanizing bath.

公开(公告)号：US11873561B2

公开(公告)日：2024-01-16

申请号：US16468494

申请日：2017-12-13

申请人： POSCO

发明人： Sun-Ho Jeon ,  Moon-Hi Hong ,  Jun-Seok Park ,  Doo-Chan Chang

IPC分类号： C23C2/40 ,  C23C2/06 ,  C23C2/26 ,  B32B15/01 ,  B21B1/22 ,  B21B27/00 ,  B21B27/02

CPC分类号： C23C2/40 ,  B21B1/227 ,  B21B27/005 ,  B21B27/021 ,  B32B15/01 ,  C23C2/06 ,  C23C2/26 ,  B21B2001/228 ,  Y10T428/12993

摘要： Provided is a hot-dip galvanized steel sheet used for an automobile outer panel and so forth and, more specifically, to a method for producing a hot-dip galvanized steel sheet having excellent press formability and clarity after painting, and to a hot-dip galvanized steel sheet produced by the method.

公开(公告)号：US10563280B2

公开(公告)日：2020-02-18

申请号：US15030830

申请日：2013-12-24

申请人： POSCO

发明人： Sung-Kyu Kim ,  Kwang-Geun Chin ,  Tae-Jin Song ,  Tai-Ho Kim ,  Won-Tae Cho ,  Sun-Ho Jeon

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/04 ,  C21D6/00 ,  C21D8/02 ,  B21B3/00 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： The present invention relates to a high-strength and high-manganese steel sheet suitable for an outer panel or a vehicle body of a transport vehicle and, more specifically, to a high-strength and high-manganese steel sheet having excellent vibration-proof properties and a method for producing the same.

公开(公告)号：US09708703B2

公开(公告)日：2017-07-18

申请号：US14369114

申请日：2012-12-27

申请人： POSCO

发明人： Sun-Ho Jeon ,  Kwang-Geun Chin

IPC分类号： B32B15/00 ,  C23C2/02 ,  C23C2/06 ,  C22C38/04 ,  C22C38/58 ,  C23C2/26 ,  C23C2/28 ,  B32B15/01 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/50 ,  C22C38/54 ,  C21D6/00 ,  C21D8/02 ,  C22C38/34

CPC分类号： C23C2/02 ,  B32B15/013 ,  C21D1/76 ,  C21D6/005 ,  C21D8/0205 ,  C21D8/0263 ,  C21D8/0284 ,  C21D9/46 ,  C22C38/00 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  Y10T428/12799

摘要： A high-manganese hot-rolled galvanized steel sheet having no surface defects and improved galvanizing and alloying characteristics is manufactured by using a high-manganese hot-rolled steel sheet. Provided are the high-manganese hot-rolled galvanized steel sheet and a method of manufacturing the high-manganese hot-rolled galvanized steel sheet. The high-manganese hot-rolled galvanized steel sheet includes: a hot-rolled steel sheet including 5 wt % to 35 wt % manganese; and a zinc coating layer formed on the hot-rolled steel sheet, wherein an internal oxide layer is formed in an internal region of the hot-rolled steel sheet facing the zinc coating layer.

公开(公告)号：US20140377585A1

公开(公告)日：2014-12-25

申请号：US14369114

申请日：2012-12-27

申请人： POSCO

发明人： Sun-Ho Jeon ,  Kwang-Geun Chin

IPC分类号： C23C2/02 ,  C21D8/02 ,  C23C2/06

CPC分类号： C23C2/02 ,  B32B15/013 ,  C21D1/76 ,  C21D6/005 ,  C21D8/0205 ,  C21D8/0263 ,  C21D8/0284 ,  C21D9/46 ,  C22C38/00 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  Y10T428/12799

摘要： A high-manganese hot-rolled galvanized steel sheet having no surface defects and improved galvanizing and alloying characteristics is manufactured by using a high-manganese hot-rolled steel sheet. Provided are the high-manganese hot-rolled galvanized steel sheet and a method of manufacturing the high-manganese hot-rolled galvanized steel sheet. The high-manganese hot-rolled galvanized steel sheet includes: a hot-rolled steel sheet including 5 wt % to 35 wt % manganese; and a zinc coating layer formed on the hot-rolled steel sheet, wherein an internal oxide layer is formed in an internal region of the hot-rolled steel sheet facing the zinc coating layer.

摘要翻译： 通过使用高锰热轧钢板制造没有表面缺陷和改善的镀锌和合金化特性的高锰热轧镀锌钢板。 提供高锰热轧镀锌钢板和高锰热轧镀锌钢板的制造方法。 高锰热轧镀锌钢板包括：含有5重量％〜35重量％的锰的热轧钢板; 以及形成在所述热轧钢板上的锌涂层，其中在所述热轧钢板的与锌涂层相对的内部区域中形成内部氧化物层。