公开(公告)号：US20200149179A1

公开(公告)日：2020-05-14

申请号：US16619234

申请日：2018-06-05

Applicant: JFE STEEL CORPORATION

Inventor： Yusuke NAKAGAWA ,  Takeshi SUZUKI ,  Mikito SUTO ,  Katsumi KOJIMA ,  Yuya BABA ,  Hanyou SOU ,  Yoichiro YAMANAKA ,  Shunsuke TOKUI

IPC: C25D11/38 ,  C25D7/00 ,  C23C28/00 ,  C25D5/18 ,  C25D5/16

Abstract: A steel sheet for cans which exhibits excellent weldability; and a production method therefore include the surface of a steel sheet in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The deposited amount of the chromium metal layer is 50-200 mg/m2. The deposited amount of the hydrous chromium oxide layer in terms of chromium is 3-30 mg/m2. The chromium metal layer includes: a base part having a thickness of 7.0 nm or higher; and granular protrusions which are on the base part, have a maximum grain size of 200 nm or lower, and have a number density per unit area of at least 30 per μm2.

公开(公告)号：US20170198369A1

公开(公告)日：2017-07-13

申请号：US15313729

申请日：2015-05-11

Applicant: JFE STEEL CORPORATION ,  THYSSENKRUPP RASSELSTEIN GMBH

Inventor： Takumi TANAKA ,  Yusuke NAKAGAWA ,  Masaki TADA ,  Katsumi KOJIMA ,  Hiroki NAKAMARU ,  Kathleen STEIN-FECHNER ,  Burkhard KAUP

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

CPC classification number: C21D9/46 ,  B22D11/001 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D9/48 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  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：US20170266924A1

公开(公告)日：2017-09-21

申请号：US15532443

申请日：2015-12-08

Applicant: JFE STEEL CORPORATION

Inventor： Norihiko NAKAMURA ,  Yoichiro YAMANAKA ,  Junichi KITAGAWA ,  Hiroki NAKAMURA ,  Hiroshi KUBO ,  Yusuke NAKAGAWA

IPC: B32B15/09 ,  B65D1/16 ,  B32B27/08 ,  B32B27/36

CPC classification number: B32B15/09 ,  B32B15/08 ,  B32B15/18 ,  B32B15/20 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36 ,  B32B2250/03 ,  B32B2250/244 ,  B32B2255/06 ,  B32B2255/205 ,  B32B2270/00 ,  B32B2307/00 ,  B32B2307/30 ,  B32B2307/308 ,  B32B2307/31 ,  B32B2307/704 ,  B32B2367/00 ,  B32B2435/00 ,  B32B2435/02 ,  B32B2439/66 ,  B65D1/12 ,  B65D1/16 ,  B65D1/165 ,  B65D17/00 ,  B65D17/02 ,  B65D17/08 ,  B65D25/14 ,  B65D25/34 ,  B65D43/02 ,  B65D65/42 ,  C08L67/00 ,  C08L67/02 ,  C08L67/03 ,  C08L2205/02 ,  C08L2205/025 ,  Y10T428/31681 ,  Y10T428/31786

Abstract: A resin-coated metal sheet for can lids includes a metal sheet coated with thermoplastic resin films on both surfaces and formed into a can lid. A thermoplastic resin film A based on polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) is heat-fused on a surface of the metal sheet serving as an exterior surface of the can lid, and a thermoplastic resin film B based on polyethylene terephthalate (PET) is heat-fused on a surface of the metal sheet serving as an interior surface of the can lid. A composition ratio (wt %) of PBT/PET in the thermoplastic resin film A on the exterior surface is (PBT/PET)=(40/60) to (80/20), and the thermoplastic resin film B on the interior surface includes 95 mol % or more of PET.

公开(公告)号：US20250034739A1

公开(公告)日：2025-01-30

申请号：US18847833

申请日：2023-02-20

Applicant: JFE STEEL CORPORATION

Inventor： Takashi UENO ,  Yusuke NAKAGAWA

IPC: C25D3/06 ,  C25D5/14 ,  C25D5/36 ,  C25D5/48 ,  C25D7/06

Abstract: Provided is a surface-treated steel sheet that can be produced without using hexavalent chromium and is excellent in adhesion to BPA-free paint and BPA-free painting corrosion resistance. A surface-treated steel sheet comprises: a steel sheet; a metallic Cr layer disposed on a surface of the steel sheet on at least one side; and a Cr oxide layer disposed on the metallic Cr layer, wherein a contact angle of ethylene glycol is 50° or less, and a total atomic ratio of K, Na, Mg, and Ca adsorbed on a surface of the surface-treated steel sheet on the at least one side to Cr is 5.0% or less.

公开(公告)号：US20210324532A1

公开(公告)日：2021-10-21

申请号：US17271967

申请日：2019-06-07

Applicant: JFE STEEL CORPORATION

Inventor： Yusuke NAKAGAWA ,  Hanyou SOU ,  Yoichiro YAMANAKA

IPC: C25D5/14 ,  C25D3/08 ,  C25D3/12 ,  C25D5/50 ,  C25D5/36 ,  C25D11/38 ,  C25D9/10 ,  C25D9/06

Abstract: A steel sheet for can making and methods for manufacturing the same. The steel sheet includes, in order from a steel sheet side, an iron-nickel diffusion layer, a metallic chromium layer, and a chromium oxide layer. The iron-nickel diffusion layer has a nickel coating weight of 50 mg/m2 to 500 mg/m2 per surface of the steel sheet and a thickness of 0.060 μm to 0.500 μm per surface of the steel sheet. The metallic chromium layer includes a flat-like metallic chromium sublayer and a granular metallic chromium sublayer placed on a surface of the flat-like metallic chromium sublayer. The total chromium coating weight of both sublayers per surface of the steel sheet is 60 mg/m2 to 200 mg/m2. The chromium oxide layer has a chromium coating weight 3 mg/m2 to 10 mg/m2 per surface of the steel sheet in terms of metallic chromium.

公开(公告)号：US20160160308A1

公开(公告)日：2016-06-09

申请号：US14906131

申请日：2014-07-08

Applicant: JFE STEEL CORPORATION

Inventor： Hayato SAITO ,  Yusuke NAKAGAWA ,  Katsumi KOJIMA ,  Hiroki NAKAMARU

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

CPC classification number: C21D9/46 ,  C21D1/26 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0436 ,  C21D8/0473 ,  C21D9/48 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

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)

Abstract translation: 具有良好的拉伸性和罐体部分相对于外部压力的优异的屈曲强度的钢板及其制造方法。 该钢板包括C：0.0030％以上且0.0100％以下，Si：0.05％以下，Mn：0.10％以上且1.0％以下，P：0.030％以下，S：0.020％以下，Al ：0.010％以上且0.100％以下，N：0.0050％以下，Nb：0.010％以上且0.050％以下，附带杂质。 C和Nb的含量满足0.10（[Nb] /92.9）/（[C] / 12）<0.60，钢板的HR30T硬度为56以上，钢板的平均杨氏模量为210GPa， 更多。