公开(公告)号：US11377707B2

公开(公告)日：2022-07-05

申请号：US16308668

申请日：2017-06-23

申请人： POSCO

发明人： Tae-Jin Song ,  Man-Young Park ,  Won-Tae Cho

IPC分类号： C22C38/38 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  B32B15/01 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/08 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C21D9/50 ,  C23C2/12 ,  C23C2/02 ,  C23C2/00 ,  C23C2/06 ,  C21D9/42

摘要： A clad steel plate, having excellent strength and formability, may include a base material; and a cladding material provided on both side surfaces of the base material, wherein the base material is austenitic high-manganese steel comprising, by weight, 0.3% to 1.4% of C, 12% to 25% of Mn, and a remainder of Fe and inevitable impurities, the cladding material is a martensitic carbon steel comprising, by weight, 0.09% to 0.4% of C, 0.3% to 4.5% of Mn, and a remainder of Fe and inevitable impurities.

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。

公开(公告)号：US10358691B2

公开(公告)日：2019-07-23

申请号：US15103078

申请日：2014-12-23

申请人： POSCO

发明人： Jai-Hyun Kwak ,  Kyoo-Young Lee ,  Hang-Sik Cho ,  Joo-Hyun Ryu ,  Man-Young Park

IPC分类号： C21D9/52 ,  C21D9/573 ,  C21D9/60 ,  C21D1/52 ,  C21D1/42 ,  C21D1/34 ,  C21D1/60 ,  C21D1/613 ,  C21D1/773 ,  C22C38/14 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/56 ,  C21D1/26 ,  C21D1/40

摘要： The present invention relates to an apparatus for continuous annealing of a strip, capable of manufacturing a high-strength and highly ductile cold-rolled steel sheet having both excellent strength and ductility, and to a method for continuous annealing of a strip. The continuous annealing apparatus, according to the present invention, is capable of continuous annealing by cooling after heating, and then reheating, unlike an existing continuous annealing apparatus which heats only once and then cools or provides an overaging treatment. As a result, the continuous annealing apparatus, according to the present invention, can preliminarily render a homogeneous texture or control the texture as desired, and then perform another reheating heat treatment to stabilize the texture or control the shape thereof to a desired state. Also, provided is a continuous annealing apparatus and a continuous annealing method using the apparatus, the continuous annealing apparatus also capable of manufacturing high-strength steel having excellent processability and strength by using a low alloy, and capable of manufacturing a zinc-plated strip having excellent plated surfaces by controlling the thickness of elements and oxides enriched on the surface of the strip.

公开(公告)号：US10604820B2

公开(公告)日：2020-03-31

申请号：US16426307

申请日：2019-05-30

申请人： POSCO

发明人： Jai-Hyun Kwak ,  Kyoo-Young Lee ,  Hang-Sik Cho ,  Joo-Hyun Ryu ,  Man-Young Park

IPC分类号： C21D9/52 ,  C21D9/56 ,  C21D9/573 ,  C21D1/26 ,  C22C38/00 ,  C21D1/40 ,  C21D1/42 ,  C21D1/52 ,  C21D1/34 ,  C21D1/60 ,  C21D1/613 ,  C21D1/773 ,  C21D9/60 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14

摘要： Provided is a method of continuously annealing a strip. The method includes: firstly heating a strip in a first heating zone; firstly cooling the firstly heated strip or maintaining the firstly heated strip at a constant temperature in a first cooling or constant temperature maintaining zone; secondarily heating and soaking the strip, firstly cooled or remaining at the constant temperature, in a second heating and soaking zone; and secondarily cooling the strip, secondarily heated and soaked, in a second cooling zone.