公开(公告)号：US10851434B2

公开(公告)日：2020-12-01

申请号：US15128667

申请日：2015-03-23

Applicant: JFE STEEL CORPORATION

Inventor： Hayato Saito ,  Mikito Suto ,  Katsumi Kojima ,  Hiroki Nakamaru

IPC: C21D9/46 ,  C22C38/06 ,  B65D1/12 ,  C22C38/02 ,  C22C38/00 ,  C22C38/14 ,  C22C38/04 ,  C21D8/02

Abstract: A steel sheet for a can having sufficient hardness and a method for manufacturing the steel sheet. The steel sheet has a chemical composition containing, by mass %, C: 0.0005% or more and 0.0030% or less, Si: 0.05% or less, Mn: 0.50% or more and 1.00% or less, P: 0.030% or less, S: 0.020% or less, Al: 0.01% or more and 0.04% or less, N: 0.0010% or more and 0.0050% or less, B: 0.0005% or more and 0.0050% or less, and Fe and inevitable impurities. Additionally, the steel sheet has a hardness (HR30T) of 56 or more, and an average Young's modulus of 215 GPa or more.

公开(公告)号：US10415111B2

公开(公告)日：2019-09-17

申请号：US15307620

申请日：2015-04-23

Applicant: JFE STEEL CORPORATION

Inventor： Masaki Tada ,  Hayato Saito ,  Katsumi Kojima ,  Hiroki Nakamaru

IPC: C21D9/46 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C21D8/02 ,  B21B1/22 ,  C22C38/00

Abstract: Provided are a high-strength steel sheet for containers and a method for producing the high-strength steel sheet. The high-strength steel sheet for containers has a composition containing, by mass, C: 0.0010% to 0.10%, Si: 0.04% or less, Mn: 0.10% to 0.80%, P: 0.007% to 0.100%, S: 0.10% or less, Al: 0.001% to 0.100%, N: 0.0010% to 0.0250%, and the balance being Fe and inevitable impurities. The difference between the dislocation density at the uppermost layer of the high-strength steel sheet in the thickness direction and the dislocation density at a depth of ¼ of the thickness of the high-strength steel sheet from the surface is 1.94×1014 m−2 or less. The high-strength steel sheet has a tensile strength of 400 MPa or more and a fracture elongation of 10% or more.

公开(公告)号：US10144985B2

公开(公告)日：2018-12-04

申请号：US14906131

申请日：2014-07-08

Applicant: JFE STEEL CORPORATION

Inventor： Hayato Saito ,  Yusuke Nakagawa ,  Katsumi Kojima ,  Hiroki Nakamaru

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C21D9/46 ,  C21D9/48 ,  C21D8/02 ,  C21D8/04 ,  C22C38/00 ,  C22C38/14 ,  C21D1/26 ,  C21D6/00

Abstract: A steel sheet exhibiting good drawability and excellent buckling strength of a can body portion against an external pressure, and a method for manufacturing the same. The steel sheet includes C: 0.0030% or more and 0.0100% or less, Si: 0.05% or less, Mn: 0.10% or more and 1.0% or less, P: 0.030% or less, S: 0.020% or less, Al: 0.010% or more and 0.100% or less, N: 0.0050% or less, Nb: 0.010% or more and 0.050% or less, and incidental impurities. Contents of C and Nb satisfy 0.10≤([Nb]/92.9)/([C]/12)

公开(公告)号：US20170051376A1

公开(公告)日：2017-02-23

申请号：US15307620

申请日：2015-04-23

Applicant: JFE STEEL CORPORATION

Inventor： Masaki Tada ,  Hayato Saito ,  Katsumi Kojima ,  Hiroki Nakamaru

IPC: C21D9/46 ,  C22C38/06 ,  C21D8/02 ,  C22C38/02 ,  C22C38/00 ,  B21B1/22 ,  C22C38/04

CPC classification number: C21D9/46 ,  B21B1/22 ,  B21B2001/221 ,  B21B2001/225 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0268 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

Abstract: Provided are a high-strength steel sheet for containers and a method for producing the high-strength steel sheet. The high-strength steel sheet for containers has a composition containing, by mass, C: 0.0010% to 0.10%, Si: 0.04% or less, Mn: 0.10% to 0.80%, P: 0.007% to 0.100%, S: 0.10% or less, Al: 0.001% to 0.100%, N: 0.0010% to 0.0250%, and the balance being Fe and inevitable impurities. The difference between the dislocation density at the uppermost layer of the high-strength steel sheet in the thickness direction and the dislocation density at a depth of ¼ of the thickness of the high-strength steel sheet from the surface is 1.94×1014 m−2 or less. The high-strength steel sheet has a tensile strength of 400 MPa or more and a fracture elongation of 10% or more.

Abstract translation: 本发明提供容器用高强度钢板和高强度钢板的制造方法。 用于容器的高强度钢板具有以质量计含有C：0.0010％至0.10％，Si：0.04％或更少，Mn：0.10％至0.80％，P：0.007％至0.100％，S：0.10的组合物 ％以下，Al：0.001〜0.100％，N：0.0010％〜0.0250％，余量为Fe和不可避免的杂质。 高强度钢板的厚度方向的最上层的位错密度与表面的高强度钢板的厚度的1/4的位错密度之间的差为1.94×10 14 m -2 或更少。 高强度钢板的拉伸强度为400MPa以上，断裂伸长率为10％以上。

公开(公告)号：US20150219549A1

公开(公告)日：2015-08-06

申请号：US14429880

申请日：2012-10-03

Applicant: JFE STEEL CORPORATION ,  TOKYO INSTITUTE OF TECHNOLOGY

Inventor： Shinji Ootsuka ,  Hiroki Nakamaru ,  Sakae Fujita ,  Tooru Tsuru

IPC: G01N17/02 ,  G01N27/30

CPC classification number: G01N17/02 ,  G01N27/304 ,  G01N27/4045 ,  G01N33/2025

Abstract: A measuring apparatus is capable of measuring an amount of hydrogen penetrated into a metal. In the apparatus, a specimen formed of a metallic material has one surface exposed to a corrosive environment to serve as a penetration surface of hydrogen generated by a corrosion reaction while having the other surface as a hydrogen detection surface. On the hydrogen detection surface side, an electrochemical cell constituted of a plurality of cells is disposed. At least one of the plurality of cells is configured as a base cell to compensate for a residual current so that anodic currents detected in other cells than the base cell are compensated for based on the residual current detected in the base cell, and an amount of hydrogen penetrating from a corrosive surface side is calculated based on the compensated currents.

Abstract translation: 测量装置能够测量渗入金属的氢的量。 在该装置中，由金属材料形成的试样具有暴露于腐蚀性环境的一个表面，作为通过腐蚀反应产生的氢的穿透面，同时具有另一个表面作为氢气检测表面。 在氢检测面侧设置由多个单元构成的电化学电池。 多个单元中的至少一个被配置为基本单元以补偿剩余电流，使得基于在基本单元中检测到的剩余电流补偿在基本单元之外的其他单元中检测到的阳极电流，并且 基于补偿电流计算从腐蚀性表面侧穿透的氢。

公开(公告)号：US20150211127A1

公开(公告)日：2015-07-30

申请号：US14680302

申请日：2015-04-07

Applicant: JFE STEEL CORPORATION

Inventor： Hiroki Nakamaru ,  Seiji Nakajima ,  Tatsuya Miyoshi ,  Hiroyuki Masuoka ,  Shinji Ootsuka

IPC: C23C30/00 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C28/00 ,  C22C38/34 ,  C22C38/32 ,  C22C38/28 ,  C22C38/14 ,  C22C38/60 ,  C22C38/06 ,  C22C38/38

CPC classification number: C21D8/0247 ,  B32B15/01 ,  B32B15/013 ,  B32B15/015 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D1/673 ,  C21D8/0457 ,  C21D2251/02 ,  C22C18/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C10/28 ,  C23C10/60 ,  C23C26/00 ,  C23C28/321 ,  C23C28/322 ,  C23C28/325 ,  C23C28/345 ,  C23C30/005 ,  C25D3/565 ,  C25D5/48 ,  C25D5/50 ,  Y10T428/12486 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/1266 ,  Y10T428/12674 ,  Y10T428/12757 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/12806 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/264 ,  Y10T428/265

Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.

Abstract translation: 热压部件包括钢板，存在于钢板的表层中的Ni扩散区域和在Ni扩散区域上依次设置的金属间化合物层和ZnO层，金属间化合物层 对应于存在于Zn-Ni合金的相平衡图中的γ相，其中在25℃±5℃下在0.5M NaCl饱和空气饱和溶液中指示的自发浸渍电位为-600至-360 基于标准氢电极的mV。

公开(公告)号：US20140377583A1

公开(公告)日：2014-12-25

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: C23C2/12

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, where-in 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％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，其中在涂层中具有αAl-Mg 2 Si-（Al-Fe-Si-Mn）的假三元共晶微结构和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：US10576712B2

公开(公告)日：2020-03-03

申请号：US15560011

申请日：2016-03-25

Applicant: JFE STEEL CORPORATION

Inventor： Yoichiro Yamanaka ,  Junichi Kitagawa ,  Hiroki Nakamaru ,  Norihiko Nakamura

IPC: B32B15/09 ,  B65D25/14 ,  B32B27/18 ,  B32B27/36 ,  B65D1/16 ,  C21D9/46 ,  C25D3/10 ,  B29C48/00 ,  B29C48/21 ,  B32B27/08 ,  B32B7/02 ,  C08L91/06 ,  B65D1/12 ,  B32B7/023 ,  B32B15/20 ,  C08L67/03 ,  B32B15/08 ,  B29K67/00 ,  B29C55/12 ,  B32B15/18 ,  B32B37/20

Abstract: A resin-coated metal sheet for containers that has excellent content releasability is provided. The resin-coated metal sheet includes a resin layer (A) and a resin layer (B). The resin layer (A) has a multilayer structure and is disposed on a side which, after the metal sheet is formed into a container, becomes the inner side of the container. The resin layer (B) is disposed on a side that becomes the outer side of the container. The resin layer (A) contains polyester as a main component and includes an uppermost resin layer (a1). A Raman band intensity ratio (I2968/I3085) on the surface of the resin layer (a1) is 0.6 to 0.9. The resin layer (B) includes polyester (I) composed mainly of polyethylene terephthalate and a polyester (II) composed mainly of polybutylene terephthalate. A Raman band intensity ratio on the surface of the resin layer (B) is 0.8 to 1.0.

公开(公告)号：US09963755B2

公开(公告)日：2018-05-08

申请号：US14680302

申请日：2015-04-07

Applicant: JFE STEEL CORPORATION

Inventor： Hiroki Nakamaru ,  Seiji Nakajima ,  Tatsuya Miyoshi ,  Hiroyuki Masuoka ,  Shinji Ootsuka

IPC: C23C30/00 ,  C23C28/00 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/34 ,  C22C38/32 ,  C22C38/28 ,  C22C38/14 ,  C22C38/60 ,  C22C38/06 ,  C22C38/38 ,  B32B15/00 ,  C21D8/02 ,  C23C2/28 ,  B32B15/01 ,  B32B15/04 ,  C23C2/06 ,  B32B15/18 ,  C22C18/00 ,  C22C38/18 ,  C23C10/28 ,  C25D5/48 ,  C25D5/50 ,  C21D1/673 ,  C23C2/26 ,  C23C10/60 ,  C23C26/00 ,  C25D3/56 ,  C21D8/04

CPC classification number: C21D8/0247 ,  B32B15/01 ,  B32B15/013 ,  B32B15/015 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D1/673 ,  C21D8/0457 ,  C21D2251/02 ,  C22C18/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C10/28 ,  C23C10/60 ,  C23C26/00 ,  C23C28/321 ,  C23C28/322 ,  C23C28/325 ,  C23C28/345 ,  C23C30/005 ,  C25D3/565 ,  C25D5/48 ,  C25D5/50 ,  Y10T428/12486 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/1266 ,  Y10T428/12674 ,  Y10T428/12757 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/12806 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/264 ,  Y10T428/265

Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.

公开(公告)号：US09669961B2

公开(公告)日：2017-06-06

申请号：US14405409

申请日：2013-06-03

Applicant: JFE Steel Corporation

Inventor： Masaki Tada ,  Katsumi Kojima ,  Hiroki Nakamaru ,  Yoichi Tobiyama

IPC: C21D9/48 ,  C21D8/04 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  B21D51/26 ,  B65D6/00 ,  C21D9/46 ,  C22C38/00 ,  B65D8/00 ,  C21D8/02

CPC classification number: B65D7/42 ,  B21D51/26 ,  B65D7/04 ,  C21D8/0273 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

Abstract: A three-piece can includes a can body obtained by forming a steel sheet such that a roundness of the can is 0.34 mm or less. The steel sheet contains: by mass %, C: 0.020% or more and 0.100% or less; Si: 0.10% or less; Mn: 0.10% or more and 0.80% or less; P: 0.001% or more and 0.100% or less; S: 0.001% or more and 0.020% or less; Al: 0.005% or more and 0.100% or less; and N: 0.0130% or more and 0.0200% or less. The balance is Fe and inevitable impurities. The steel sheet has a yield strength of 440 MPa or more and a total elongation of 12% or more.