公开(公告)号：US20230024286A1

公开(公告)日：2023-01-26

申请号：US17785845

申请日：2020-10-13

申请人： POSCO

发明人： Rho-Bum Park ,  Jong-Ho Kim

IPC分类号： C25D5/36 ,  C22C38/04 ,  C22C38/02 ,  C25D5/48 ,  C23C2/02 ,  C23C2/34

摘要： The present invention relates to a steel sheet with improved yellowing resistance and phosphatability, wherein the steel sheet contains 0.5% by weight or more of Mn, and contains 0.01 to 10 mg/m2 of Ca+Mg, 0.01 to 10 mg/m2 of P, 0.01 to 20 mg/m2 of C, and 0.05 to 30 mg/m2 of O as components excluding a steel component on the surface of the steel sheet after pickling, water rinsing, and drying. According to the present invention, in a manufacturing process of the steel sheet, the surface of the steel sheet is subjected to a chemical conversion treatment for improving phosphatability and yellowing resistance in a water-cooling section or a water-washing section, thereby having an effect of improving the surface quality of products using same and various subsequently treated products.

公开(公告)号：US11332667B2

公开(公告)日：2022-05-17

申请号：US17317317

申请日：2021-05-11

申请人： POSCO

发明人： Rho-Bum Park ,  Yon-Kyun Song ,  Ji-Hoon Park ,  Hoon Yun ,  Seok-Chan Choe ,  Kyoung-Pil Ko

IPC分类号： C09K15/32 ,  B08B3/08 ,  C09D5/08 ,  C09D179/02 ,  C23G1/08

摘要： A composition for washing a pickled steel plate and a method for washing a pickled steel plate using the same are provided. The composition for washing a pickled steel plate includes a phosphoric acid ester compound, an amine-based compound, sodium carbonate, ammonium acetate, ethylene diamine tetraacetic acid (EDTA) and a remainder of water, and the method for washing a pickled steel plate is performed using the same.

公开(公告)号：US20150299472A1

公开(公告)日：2015-10-22

申请号：US14418112

申请日：2012-12-27

申请人： POSCO

发明人： Kyoung-Pil Ko ,  Rho-Bum Park ,  Jong-Sang Kim ,  Jung-Hwan Lee

IPC分类号： C09D5/08 ,  C09D175/14

CPC分类号： C09D5/08 ,  C08G2650/56 ,  C08K3/105 ,  C08K3/11 ,  C08K3/26 ,  C08K3/34 ,  C08K3/36 ,  C08K11/00 ,  C08K13/02 ,  C08K2003/0881 ,  C08K2003/0893 ,  C08K2003/2217 ,  C09D5/084 ,  C09D7/61 ,  C09D171/00 ,  C09D175/04 ,  C09D175/14 ,  C08L75/04

摘要： Provided are an organic-inorganic hybrid coating solution composition including 12 wt % to 36 wt % of a urethane-acryl hybrid resin, 8 wt % to 24 wt % of a nanosilicate-phenoxy hybrid resin, and 40 wt % to 80 wt % of an inorganic-based anti-corrosion agent based on a solid content, and an organic-inorganic hybrid coated steel sheet having a coating layer formed with the coating solution composition. A coating solution composition having excellent solution stability and a coated steel sheet having improved corrosion resistance, solvent resistance, and conductivity may be provided.

摘要翻译： 提供了包含12重量％至36重量％的氨基甲酸酯 - 丙烯酸杂化树脂，8重量％至24重量％的纳米硅氧烷 - 苯氧基杂化树脂和40重量％至80重量％的有机 - 无机杂化涂料溶液组合物 基于固体成分的无机类防腐蚀剂和具有由涂布液组成物形成的被覆层的有机无机复合涂布钢板。 可以提供具有优异的溶液稳定性的涂料溶液组合物和具有改善的耐腐蚀性，耐溶剂性和导电性的涂层钢板。

公开(公告)号：US11028322B2

公开(公告)日：2021-06-08

申请号：US16062926

申请日：2016-12-19

申请人： POSCO

发明人： Rho-Bum Park ,  Yon-Kyun Song ,  Ji-Hoon Park ,  Hoon Yun ,  Seok-Chan Choe ,  Kyoung-Pil Ko

IPC分类号： C09K15/32 ,  C09D5/08 ,  C09D179/02 ,  C23G1/08 ,  B08B3/08

摘要： A composition for washing a pickled steel plate and a method for washing a pickled steel plate using the same are provided. The composition for washing a pickled steel plate includes a phosphoric acid ester compound, an amine-based compound, sodium carbonate, ammonium acetate, ethylene diamine tetraacetic acid (EDTA) and a remainder of water, and the method for washing a pickled steel plate is performed using the same.

公开(公告)号：US10053749B2

公开(公告)日：2018-08-21

申请号：US14971258

申请日：2015-12-16

申请人： POSCO

发明人： Rho-Bum Park ,  Kwang-Geun Chin ,  Man-Young Park

IPC分类号： C21D8/02 ,  C23C12/02 ,  C21D9/46 ,  C21D1/26 ,  C21D9/00 ,  C21D9/54 ,  C23C2/02 ,  C23C2/26 ,  C23C2/28 ,  C23C26/00 ,  C21D1/34 ,  C21D1/42 ,  C21D1/613 ,  C21D1/84 ,  C21D6/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/60 ,  C23C2/06 ,  C23C2/12 ,  C21D1/00

CPC分类号： C21D9/46 ,  C21D1/26 ,  C21D1/34 ,  C21D1/42 ,  C21D1/613 ,  C21D1/84 ,  C21D6/005 ,  C21D6/008 ,  C21D8/02 ,  C21D9/005 ,  C21D9/54 ,  C22C38/02 ,  C22C38/04 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C26/00 ,  Y02P10/253

摘要： Provided is a method for producing plated steel sheet by means of an annealing device which includes at least one section and in which the at least one section is filled with a gas constituting a non-reducing atmosphere or a weakly reducing atmosphere to substantially improve the quality of plating onto hot-dipped steel sheet, including the plating properties, alloying properties, anti-pickup properties, plating adhesion properties, anti-flaking properties, anti-cratering properties and anti-ash properties, by using prior-art annealing equipment and heat-treatment cycle without any additional oxidation-reduction heat treatment process or large quantities of high-cost alloying elements.

公开(公告)号：US20160102381A1

公开(公告)日：2016-04-14

申请号：US14971258

申请日：2015-12-16

申请人： POSCO

发明人： Rho-Bum Park ,  Kwang-Geun Chin ,  Man-Young Park

IPC分类号： C21D9/46 ,  C22C38/04 ,  C22C38/02 ,  C21D6/00 ,  C23C2/12 ,  C21D1/42 ,  C21D1/34 ,  C21D1/613 ,  C21D1/84 ,  C23C2/06 ,  C22C38/60 ,  C21D1/26

CPC分类号： C21D9/46 ,  C21D1/26 ,  C21D1/34 ,  C21D1/42 ,  C21D1/613 ,  C21D1/84 ,  C21D6/005 ,  C21D6/008 ,  C21D8/02 ,  C21D9/005 ,  C21D9/54 ,  C22C38/02 ,  C22C38/04 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C26/00 ,  Y02P10/253

摘要： Provided is a method for producing plated steel sheet by means of an annealing device which includes at least one section and in which the at least one section is filled with a gas constituting a non-reducing atmosphere or a weakly reducing atmosphere to substantially improve the quality of plating onto hot-dipped steel sheet, including the plating properties, alloying properties, anti-pickup properties, plating adhesion properties, anti-flaking properties, anti-cratering properties and anti-ash properties, by using prior-art annealing equipment and heat-treatment cycle without any additional oxidation-reduction heat treatment process or large quantities of high-cost alloying elements.

摘要翻译： 提供一种通过包括至少一个部分的退火装置制造镀覆钢板的方法，其中至少一个部分填充有构成非还原气氛或弱还原气氛的气体，以显着提高质量 通过使用现有技术的退火设备和热量，包括电镀性能，合金化性能，抗起转性，电镀粘合性能，抗剥落性，抗起火性能和抗灰渣性能的电镀到热浸镀锌钢板上 处理循环，无需任何额外的氧化还原热处理工艺或大量高成本的合金元素。