公开(公告)号：US10822685B2

公开(公告)日：2020-11-03

申请号：US16489848

申请日：2018-03-27

Applicant: JFE STEEL CORPORATION

Inventor： Rinta Sato ,  Shunsuke Yamamoto ,  Satoru Ando

IPC: C23C2/12 ,  C22C21/08 ,  C23C2/28 ,  C23C2/40

Abstract: To provide a hot-dip Al alloy coated steel sheet which is excellent in post-painting corrosion resistance and post-working corrosion resistance. Disclosed is a hot-dip Al alloy coated steel sheet comprising a coating formed by a coating layer and an interfacial alloy layer present at an interface between the coating layer and a base steel sheet, in which the interfacial alloy layer contains Mn, and the coating layer contains Mg2Si having a major axis length of 5 μm or more.

公开(公告)号：US10662516B2

公开(公告)日：2020-05-26

申请号：US15553658

申请日：2016-03-02

Applicant: JFE STEEL CORPORATION

Inventor： Toshihiko Ooi ,  Yohei Sato ,  Yoichi Tobiyama ,  Toshiyuki Okuma ,  Akihiko Furuta ,  Masahiro Yoshida ,  Yoshitsugu Suzuki ,  Satoru Ando ,  Akira Matsuzaki

IPC: C23C2/06 ,  C22C18/04 ,  C23C2/28 ,  C22C30/06 ,  C23C2/12 ,  C22C21/10

Abstract: Provided is a hot-dip Al—Zn—Mg—Si coated steel sheet having good corrosion resistance in flat parts and edge parts, and also having excellent worked part corrosion resistance. The hot-dip Al—Zn—Mg—Si coated steel sheet includes a base steel sheet and a hot-dip coating on a surface of the base steel sheet. The hot-dip coating includes an interfacial alloy layer present at an interface with the base steel sheet and a main layer present on the interfacial alloy layer, and contains from 25 mass % to 80 mass % of Al, from greater than 0.6 mass % to 15 mass % of Si, and from greater than 0.1 mass % to 25 mass % of Mg. The Mg content and Si content in the hot-dip coating satisfy formula (1): MMg/(MSi−0.6)>1.7  (1) where MMg represents the Mg content (mass %) and MSi represents the Si content (mass %).

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：US09493868B2

公开(公告)日：2016-11-15

申请号：US14364357

申请日：2012-12-10

Applicant: JFE Steel Corporation ,  Tokyo Institute of Technology

Inventor： Tooru Tsuru ,  Toshio Maruyama ,  Tatsuo Sato ,  Masao Takeyama ,  Masahiro Yoshida ,  Sakae Fujita ,  Sachiko Suzuki ,  Satoru Ando ,  Hiroki Nakamaru

IPC: B32B15/01 ,  C22C21/00 ,  C23C2/12 ,  C22C21/06 ,  C23C2/28 ,  C21D8/04 ,  C21D1/673

CPC classification number: C23C2/12 ,  C21D1/673 ,  C21D8/0473 ,  C21D8/0478 ,  C21D2211/004 ,  C22C21/06 ,  C23C2/28 ,  Y10T428/12757

Abstract: An aluminum or aluminum alloy-coated steel material includes base steel; and a coating layer formed on a surface of the base steel and containing by mass % Mg: 6% to 10%, Si: 3% to 7%, Fe: 0.2% to 2%, Mn: 0.02% to 2%, and the balance as Al and incidental impurities, wherein the coating layer has pseudoternary eutectic microstructures of αAl—Mg2Si—(Al—Fe—Si—Mn) and an area ratio of the pseudoternary eutectic microstructures in the coating layer is at least 30%.

Abstract translation: 铝或铝合金涂层钢材包括基体钢; 以及以质量％的Mg：6〜10％，Si：3〜7％，Fe：0.2〜2％，Mn：0.02〜2％的比例含有的涂层， 作为Al和偶然杂质的平衡，其中涂层具有αAl-Mg2Si（（Al-Fe-Si-Mn））的假三元共晶微结构，并且涂层中的假三元共晶微结构的面积比至少为30％。

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：US20150013716A1

公开(公告)日：2015-01-15

申请号：US14372912

申请日：2013-01-16

Applicant: JFE STEEL CORPORATION

Inventor： Hiroyuki Masuoka ,  Satoru Ando ,  Shigeyuki Aizawa ,  Kazuki Nakazato ,  Shoichiro Taira

IPC: C23G1/08

CPC classification number: C23G1/08 ,  C21D8/02 ,  C21D8/0278 ,  C21D9/562 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23G1/00 ,  C23G1/081 ,  C23G1/085 ,  C23G1/086

Abstract: In a method for prevention of yellowing on a surface of a steel sheet subjected to re-pickling, washing with water and drying after a surface of a continuously annealed steel sheet is pickled to remove Si-containing oxide layer from a surface layer of the steel sheet, the surface of the steel sheet is held at a wet state between the pickling and the re-pickling and between the re-pickling and the washing, and more preferably the washing is carried out with water having an iron ion concentration decreased to not more than 20 g/L, whereby the yellowing on the surface of the steel sheet after the pickling is prevented. Thus, cold rolled steel sheets being excellent in not only the appearance quality but also the phosphatability and corrosion resistance after painting are manufactured stably.

Abstract translation: 在经过再次酸化的钢板表面防止黄化的方法中，在连续退火钢板的表面被酸洗后，用水洗涤并干燥以从钢的表面层除去含Si氧化物层 在酸洗和再酸洗之间以及再酸洗和洗涤之间，钢板的表面处于湿润状态，更优选地，用铁离子浓度降低至不是的水进行洗涤 大于20g / L，从而防止酸洗后钢板表面发黄。 因此，不仅稳定地制造在外观品质上优异且涂装后的耐磷化性和耐腐蚀性优异的冷轧钢板。

公开(公告)号：US10253386B2

公开(公告)日：2019-04-09

申请号：US14382664

申请日：2013-03-04

Applicant: JFE STEEL CORPORATION

Inventor： Tatsuya Miyoshi ,  Seiji Nakajima ,  Satoru Ando

IPC: B32B15/00 ,  C21D8/02 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C21D9/46 ,  C22C18/00 ,  C22C21/10 ,  C22C38/00 ,  C22C38/60 ,  C21D1/673 ,  B32B15/01 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  B21D22/02 ,  C21D7/13

Abstract: The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/m2 on the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm.

公开(公告)号：US09476799B2

公开(公告)日：2016-10-25

申请号：US13912534

申请日：2013-06-07

Applicant: SUZUKI MOTOR CORPORATION ,  JFE STEEL CORPORATION

Inventor： Nobutoshi Konagai ,  Ruri Nakada ,  Kouta Sako ,  Yuya Ito ,  Sachiko Suzuki ,  Satoru Ando ,  Yoshiharu Sugimoto

IPC: G01B3/44 ,  G01B3/00 ,  G01B5/28 ,  G01M17/00 ,  G01M3/16 ,  G01M17/007

CPC classification number: G01M17/007 ,  B60Y2400/303 ,  B60Y2400/3084 ,  G01M3/16 ,  G01M17/00 ,  G01N17/04

Abstract: A mobile body corrosion measuring apparatus having a corrosion sensor installed in at least one portion of a mobile body, the corrosion sensor measuring a corrosion state at the portion and outputting corrosion data; a vehicle (mobile body) running speed sensor installed in the mobile body, the running speed sensor measuring a running speed of the mobile body and outputting the running speed data; and a data collection unit that acquires the corrosion data from the corrosion sensor and the running speed data from the vehicle speed sensor at the same time and collects the corrosion data and the running speed data with the corrosion data and the running speed data associated with each other. Due to above structure, a corrosion state specific to the mobile body can be accurately measured.

Abstract translation: 一种移动体腐蚀测量装置，其具有安装在移动体的至少一部分中的腐蚀传感器，所述腐蚀传感器测量所述部分处的腐蚀状态并输出腐蚀数据; 安装在移动体中的车辆（移动体）行驶速度传感器，运动速度传感器，测量移动体的运行速度并输出运行速度数据; 以及数据采集单元，同时从腐蚀传感器获取腐蚀数据和来自车速传感器的运行速度数据，并且用与腐蚀数据和运行速度数据相关联的腐蚀数据和运行速度数据收集腐蚀数据和运行速度数据 其他。 由于上述结构，可以精确地测量移动体特有的腐蚀状态。

公开(公告)号：US10030290B2

公开(公告)日：2018-07-24

申请号：US14438993

申请日：2013-10-28

Applicant: JFE Steel Corporation

Inventor： Tatsuya Miyoshi ,  Seiji Nakajima ,  Satoru Ando

IPC: C22C38/06 ,  C22C38/38 ,  C22C38/34 ,  B21D37/16 ,  C22C18/00 ,  C22C19/03 ,  C22C38/00 ,  C22C38/60 ,  C23C28/00 ,  C22C18/04 ,  C25D3/56 ,  C25D5/14 ,  C25D5/48 ,  B32B15/01 ,  C22C38/02 ,  C22C38/04 ,  C22C38/28 ,  C22C38/32 ,  C23C2/06 ,  C23C2/26 ,  C23C2/40 ,  C21D1/673 ,  C25D5/50 ,  C25D5/10 ,  C25D7/06 ,  C21D9/00 ,  C21D1/18

Abstract: A steel sheet for hot press-forming includes a zinc coating layer and a Si-containing compound layer in this order on a base steel sheet, wherein the Si-containing compound layer contains a silicone resin having an organic functional group of a carbon number of 4 or more.

公开(公告)号：US09758853B2

公开(公告)日：2017-09-12

申请号：US14763913

申请日：2014-02-17

Applicant: JFE STEEL CORPORATION

Inventor： Masahiro Yoshida ,  Akira Matsuzaki ,  Satoru Ando

IPC: C23C2/12 ,  C23C2/28 ,  C23C2/06 ,  C23C2/40 ,  C22C18/04 ,  C22C21/00 ,  B32B15/01 ,  C23C2/04 ,  C23C2/00 ,  C23C2/26 ,  C23C30/00 ,  C22C21/10

CPC classification number: C23C2/12 ,  B32B15/012 ,  B32B15/013 ,  C22C18/04 ,  C22C21/00 ,  C22C21/10 ,  C23C2/00 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/285 ,  C23C2/40 ,  C23C2/405 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/12757 ,  Y10T428/12799 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/12993

Abstract: Disclosed is a hot-dip Al—Zn alloy coated steel sheet having excellent anti-corrosion property after coating, and a method for producing the same. In the disclosure, the hot-dip Al—Zn alloy coated steel sheet has a hot-dip coating layer containing by mass %, Al: 25% to 90%, and at least one of Sn: 0.01% to 2.0%, In: 0.01% to 10%, and Bi: 0.01% to 2.0%.