公开(公告)号：US10301702B2

公开(公告)日：2019-05-28

申请号：US15313729

申请日：2015-05-11

Applicant: JFE STEEL CORPORATION ,  THYSSENKRUPP RASSELSTEIN GMBH ,  Thomas Fechner

Inventor： Takumi Tanaka ,  Yusuke Nakagawa ,  Masaki Tada ,  Katsumi Kojima ,  Hiroki Nakamaru ,  Kathleen Stein-Fechner ,  Burkhard Kaup

IPC: C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C21D9/46 ,  C21D9/48 ,  C21D8/02 ,  C21D8/04 ,  C22C38/00 ,  B22D11/00 ,  C22C38/02 ,  C23G1/02

Abstract: A can steel plate includes: equal or less than 0.0030% by mass of C; equal or less than 0.02% by mass of Si; 0.05-0.60% by mass of Mn; equal or less than 0.020% by mass of P; equal or less than 0.020% by mass of S; 0.010% to 0.100% by mass of Al; 0.0010-0.0050% by mass of N; 0.001-0.050% by mass of Nb; and balance Fe and impurities. Intensity of (111) [1-21] orientation (where −2 represents 2 with bar in Miller indices) and intensity of (111)[1-10] orientation (where −1 represents 1 with bar in Miller indices) satisfy the following equation (1), and in a rolling direction and 90° direction from the rolling direction in a horizontal plane, tensile strength TS (MPa) and fracture elongation El (%) satisfy relations of the following equations (2) and (3). (Intensity of (111) [1-21] orientation)/(Intensity of (111) [1-10] orientation)>0.9 . . . (1), TS>550 . . . (2), El>−0.02×TS+17.5 . . . (3).

公开(公告)号：US20150136635A1

公开(公告)日：2015-05-21

申请号：US14405409

申请日：2013-06-03

Applicant: JFE Steel Corporation

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

IPC: B65D6/00 ,  B21D51/26

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.

Abstract translation: 三件式可以包括通过形成钢板而获得的罐体，使得罐的圆度为0.34mm以下。 该钢板以质量％计含有C：0.020％以上且0.100％以下的钢板。 Si：0.10％以下; Mn：0.10％以上且0.80％以下; P：0.001％以上且0.100％以下; S：0.001％以上且0.020％以下; Al：0.005％以上且0.100％以下; N：0.0130％以上且0.0200％以下。 余量为Fe和不可避免的杂质。 钢板的屈服强度为440MPa以上，总伸长率为12％以上。

公开(公告)号：US10941456B2

公开(公告)日：2021-03-09

申请号：US16080067

申请日：2017-02-02

Applicant: JFE STEEL CORPORATION

Inventor： Masaki Tada ,  Katsumi Kojima

IPC: C21D8/02 ,  C21D9/46 ,  C22C38/12 ,  C21D1/26 ,  C21D8/04 ,  C21D1/32 ,  C22C38/00 ,  C22C38/04 ,  C21D9/48

Abstract: A steel sheet for a can having high strength, excellent ductility, and good corrosion resistance, and a method for manufacturing the steel sheet. The steel sheet has a chemical composition containing, by mass %, C: 0.020% or more and 0.130% or less, Si: 0.04% or less, Mn: 0.10% or more and 1.20% or less, P: 0.007% or more and 0.100% or less, S: 0.030% or less, Al: 0.001% or more and 0.100% or less, N: more than 0.0120% and 0.0200% or less, Nb: 0.0060% or more and 0.0300% or less, and Fe and inevitable impurities. An absolute value of a difference in an amount of solid solution Nb between a region from a surface to a position located at ⅛ of a thickness and a region from a position located at ⅜ of the thickness to a position located at 4/8 of the thickness is 0.0010 mass % or more.

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.

公开(公告)号：US20240376578A1

公开(公告)日：2024-11-14

申请号：US18691606

申请日：2022-09-09

Applicant: JFE Steel Corporation

Inventor： Kazuhiko Yamazaki ,  Masaki Tada

IPC: C22C38/04 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C23C2/06

Abstract: A steel sheet for hot pressing, a method for producing the steel sheet, a hot-pressed member, and a method for producing the hot-pressed member are disclosed. The steel sheet for hot pressing contains specific components, wherein ferrite constitutes 30% or more and 90% or less by area, pearlite constitutes 10% or more and 70% or less by area, and a remaining microstructure constitutes 5% or less by area, the ferrite has an average aspect ratio in the range of 2.0 or more and 12.0 or less, and the ferrite has an average minor axis length of 5.0 μm or less, the steel sheet contains 500/μm3 or more and 6000/μm3 or less of Ti—Nb complex precipitates with a grain size of 3 nm or more and 50 nm or less, and the steel sheet has a dislocation density of 1.0×1015/m2 or more.

公开(公告)号：US10392682B2

公开(公告)日：2019-08-27

申请号：US14440779

申请日：2013-11-06

Applicant: JFE STEEL CORPORATION

Inventor： Mikito Suto ,  Katsumi Kojima ,  Masaki Tada ,  Hiroki Nakamaru

IPC: C22C38/06 ,  C21D9/46 ,  C22C38/00 ,  C21D8/04 ,  C22C38/02 ,  C22C38/04 ,  C21D6/00 ,  C21D8/02

Abstract: Provided are a steel sheet for a can having high buckling strength for a can body against an external force and excellent formability when being formed into a shape having a design effect by additionally giving elongation strain in the circumferential direction after the steel sheet having been formed into a cylindrical shape and a method for manufacturing the steel sheet. The chemical composition is controlled to contain, by mass %, C: 0.0005% or more and 0.0035% or less, Si: 0.050% or less, Mn: more than 0.60% and 1.00% or less, P: 0.030% or less, S: 0.020% or less, Al: 0.010% or more and 0.100% or less, N: 0.0030% or less, B: 0.0005% or more, and the balance being Fe and inevitable impurities, in which the relationship B/N≥0.50 is satisfied where B/N represents (B(mass %)/10.81)/(N(mass %)/14.01), and a Young's modulus in a direction at an angle of 90° to the rolling direction is 220 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：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：US20150107326A1

公开(公告)日：2015-04-23

申请号：US14579148

申请日：2014-12-22

Applicant: JFE Steel Corporation ,  Nippon Quaker Chemical, Ltd.

Inventor： Yasuhide Oshima ,  Masaki Tada ,  Hiroki Iwasa ,  Katsumi Kojima ,  Junichi Kitagawa ,  Yoshihiko Yasue ,  Toshikazu Ikeda ,  Tomohiro Kanokogi ,  Takeyoshi Fukuda

IPC: B21D22/20

CPC classification number: B21D22/201 ,  B21D22/208 ,  C09K5/10 ,  C10M173/02 ,  C10M2201/062 ,  C10M2207/125 ,  C10M2215/042 ,  C10N2220/142 ,  C10N2230/12 ,  C10N2230/62 ,  C10N2240/402 ,  C10N2210/01

Abstract: A method of DI forming a laminated metal sheet includes drawing a laminated metal sheet; and redrawing and ironing the drawn laminated metal sheet, wherein a water-based coolant including (a) at least one base selected from the group consisting of alkanolamines and alkali metal hydroxides, (b) a fatty acid, and (c) water is used in the redrawing and ironing, and wherein a total content of the base (a) and the fatty acid (b) is 0.02 to 4% by mass and a ratio of a straight-chain fatty acid having a carbon number of 6 to 12 in the fatty acid (b) is 80 to 100% by mass.

Abstract translation: DI成型层压金属板的方法包括拉制层压金属片; 并且重新拉伸和熨烫所述拉制的层压金属片，其中使用包含（a）至少一种选自链烷醇胺和碱金属氢氧化物，（b）脂肪酸和（c）水）的碱的水基冷却剂 在重洗和熨烫中，其中，碱（a）和脂肪酸（b）的总含量为0.02〜4质量％，碳数为6〜12的直链脂肪酸的比例在 脂肪酸（b）为80〜100质量％。