公开(公告)号：US10434556B2

公开(公告)日：2019-10-08

申请号：US14899319

申请日：2014-05-13

Applicant: JFE Steel Corporation

Inventor： Seiji Nakajima ,  Minako Morimoto ,  Satoru Ando

IPC: B21D22/00 ,  B21D22/02 ,  C22C18/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60

Abstract: Provided is a hot-pressed member excellent in terms of paint adhesiveness and a method of manufacturing the hot-pressed member. A hot-pressed member has a coating layer containing Zn and Ni on the surface of a steel sheet of which the member is formed, an oxide film containing Zn on the coating layer, and a void formation rate is 80% or less for voids formed between the coating layer and the oxide film.

公开(公告)号：US20160144600A1

公开(公告)日：2016-05-26

申请号：US14901147

申请日：2014-05-13

Applicant: JFE STEEL CORPORATION

Inventor： Seiji Nakajima ,  Minako Morimoto ,  Satoru Ando

IPC: B32B15/01 ,  C22C18/00 ,  C22C38/60 ,  C22C38/00 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C19/03 ,  C22C38/32

CPC classification number: B32B15/015 ,  C21D1/00 ,  C21D1/673 ,  C21D7/13 ,  C22C18/00 ,  C22C19/03 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  C25D3/12 ,  C25D3/56 ,  C25D3/565 ,  C25D5/14 ,  C25D5/50 ,  C25D7/0614 ,  Y10T428/12799 ,  Y10T428/12937 ,  Y10T428/12944

Abstract: A steel sheet for hot press-forming having a first coating layer on a surface of the steel sheet, containing 60% or more by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being more than 5 g/m2 and 50 g/m2 or less per side, and a second coating layer on the first coating layer, containing 10% to 25% by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being 10 to 90 g/m2 per side.

Abstract translation: 一种热压成形用钢板，其特征在于，在所述钢板的表面上具有含有60质量％以上的Ni的第一被覆层，剩余部分由Zn和附带的杂质构成，其涂层质量大于5g / m 2 和每侧50g / m 2以下，第一被覆层上的第二被覆层含有10质量％〜25质量％的Ni，余量由Zn和杂质构成，其涂布质量为10〜90g / m2。

公开(公告)号：US10384254B2

公开(公告)日：2019-08-20

申请号：US14901754

申请日：2014-06-02

Applicant: JFE Steel Corporation

Inventor： Seiji Nakajima ,  Minako Morimoto ,  Satoru Ando

IPC: C22C38/60 ,  B21D22/20 ,  C21D1/18 ,  C21D1/673 ,  C21D9/46 ,  C22C18/00 ,  C22C19/03 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/28 ,  C22C38/32 ,  C25D5/14 ,  C25D5/50 ,  C25D7/06 ,  B32B15/01

Abstract: A method of manufacturing a hot-pressed member including heating a coated steel sheet to 850° C. to 950° C., the coated steel sheet including a substrate steel sheet and a coating layer formed on the substrate steel sheet and containing 10% to 25% by mass of Ni and the balance being Zn and incidental impurities, in which the coating weight of the coating layer is 10 to 90 g/m2 per a side; and starting hot press forming when the temperature of the coated steel sheet which has been heated is 650° C. to 800° C.

公开(公告)号：US10093077B2

公开(公告)日：2018-10-09

申请号：US14901147

申请日：2014-05-13

Applicant: JFE STEEL CORPORATION

Inventor： Seiji Nakajima ,  Minako Morimoto ,  Satoru Ando

IPC: B32B15/18 ,  B32B15/01 ,  C21D7/13 ,  C21D1/673 ,  C25D5/14 ,  C25D5/50 ,  C25D7/06 ,  C22C18/00 ,  C22C19/03 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  C21D1/00 ,  C25D3/12 ,  C25D3/56

Abstract: A steel sheet for hot press-forming having a first coating layer on a surface of the steel sheet, containing 60% or more by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being more than 5 g/m2 and 50 g/m2 or less per side, and a second coating layer on the first coating layer, containing 10% to 25% by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being 10 to 90 g/m2 per side.

公开(公告)号：US20160047018A1

公开(公告)日：2016-02-18

申请号：US14779748

申请日：2014-03-19

Applicant: JFE STEEL CORPORATION

Inventor： Minako Morimoto ,  Masahiro Yoshida ,  Satoru Ando

IPC: C22C21/10 ,  B32B15/01

CPC classification number: C22C21/10 ,  B32B15/012 ,  C23C2/02 ,  C23C2/12 ,  C23C2/26 ,  C23C2/405 ,  C23C28/021

Abstract: An Al—Zn-coated steel sheet that suppresses blistering and offers good corrosion resistance after painting is provided. The Al—Zn-coated steel sheet includes an Al—Zn coating layer on a steel sheet surface, the Al—Zn coating layer including two layers which are an interfacial alloy layer present in an interface with a base steel sheet and an upper layer disposed on the interfacial alloy layer. The upper layer contains compounds of Si and Ca or Si, Ca, and Al, and Ca/Si mass % ratio in the upper layer is 0.72 to 1.4. The interfacial alloy layer contains an Fe—Al compound and/or an Fe—Al—Si compound. In the upper layer, Si content is 0.1 to 2.0 mass % and Ca content is 0.001 to 2.0 mass %.

Abstract translation: 提供一种抑制起泡并提供涂漆后耐腐蚀性的Al-Zn涂层钢板。 所述Al-Zn系镀覆钢板在钢板表面上具有Al-Zn被覆层，所述Al-Zn被覆层包含与基材钢板的界面上存在的界面合金层和设置在上层的界面合金层 在界面合金层上。 上层含有Si和Ca或Si，Ca和Al的化合物，上层的Ca / Si质量％比为0.72〜1.4。 界面合金层含有Fe-Al化合物和/或Fe-Al-Si化合物。 在上层中，Si含量为0.1〜2.0质量％，Ca含量为0.001〜2.0质量％。