公开(公告)号：US20160145710A1

公开(公告)日：2016-05-26

申请号：US14903911

申请日：2014-07-08

Applicant: JFE STEEL CORPORATION

Inventor： Yuka MIYAMOTO ,  Takashi KOBAYASHI ,  Chikara KAMI

IPC: C21D9/46 ,  C21D6/00 ,  C22C38/60 ,  C22C38/32 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/02 ,  C22C38/12

CPC classification number: C21D9/46 ,  C21D1/32 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/18 ,  C22C38/32 ,  C22C38/60

Abstract: There is provided a high-carbon hot-rolled steel sheet and method for producing the same. The steel sheet has excellent hardenability consistently, even when annealed in a nitrogen atmosphere, and excellent workability. The steel sheet has a hardness in the range of 65 or less in terms of HRB and a total elongation El of 40% or more before a quenching treatment is performed.

Abstract translation: 提供一种高碳热轧钢板及其制造方法。 即使在氮气氛中进行退火，钢板也具有优异的淬透性，加工性优异。 在进行淬火处理之前，钢板的HRB的硬度为65以下，总伸长率E1为40％以上。

公开(公告)号：US20150368739A1

公开(公告)日：2015-12-24

申请号：US14764637

申请日：2014-01-23

Applicant: JFE Steel Corporation

Inventor： Katsumi NAKAJIMA ,  Kazuhiko YAMAZAKI ,  Chikara KAMI

IPC: C21D9/46 ,  C22C38/16 ,  C22C38/14 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/28 ,  C22C38/12

CPC classification number: C21D9/46 ,  C21D8/0426 ,  C21D8/0463 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  Y02P10/212

Abstract: There are provided a high-strength hot-rolled steel sheet having high burring formability and a method for manufacturing the high-strength hot-rolled steel sheet. The high-strength hot-rolled steel sheet having high burring formability contains, on a mass percent basis, C: 0.013% or more and less than 0.08%, Si: less than 0.5%, Mn: more than 0.8% and less than 1.2%, P: 0.05% or less, S: 0.005% or less, N: 0.01% or less, Al: 0.1% or less, and Ti: 0.03% or more and 0.15% or less such that C, S, N, and Ti satisfy 0.05≦Ti*

Abstract translation: 提供了一种具有高切削成形性的高强度热轧钢板和一种制造该高强度热轧钢板的方法。 具有高成型性的高强度热轧钢板以质量％计含有C：0.013％以上且小于0.08％的Si：小于0.5％，Mn：大于0.8％且小于1.2 ％，P：0.05％以下，S：0.005％以下，N：0.01％以下，Al：0.1％以下，Ti：0.03％以上且0.15％以下，C，S，N， 和Ti满足0.05＆nlE; Ti * <0.1和C×（48/12）-0.16

公开(公告)号：US20180112285A1

公开(公告)日：2018-04-26

申请号：US15565998

申请日：2016-04-15

Applicant: JFE STEEL CORPORATION

Inventor： Tetsuyuki NAKAMURA ,  Takashi SAMUKAWA ,  Mitsuyuki FUJISAWA ,  Chikara KAMI

IPC: C21D9/46 ,  C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C21D1/18

CPC classification number: C21D9/46 ,  C21D1/18 ,  C21D1/25 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D6/008 ,  C21D8/0426 ,  C21D8/0436 ,  C21D9/0068 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58

Abstract: The disclosure is to provide a martensitic stainless steel excellent in strength, workability and corrosion resistance. The martensitic stainless steel comprises a chemical composition containing, in mass %: C: 0.020% or more and less than 0.10%, Si: 0.01% or more and 2.0% or less, Mn: 0.01% or more and 3.0% or less, P: 0.050% or less, S: 0.050% or less, Cr: 10.0% or more and 16.0% or less, Ni: 0.01% or more and 0.80% or less, Al: 0.001% or more and 0.50% or less, and N: more than 0.050% and 0.20% or less, satisfying N %≥C %, and the balance containing Fe and incidental impurities, where C % and N % indicate respectively the contents of C and N (mass %) in the steel.

公开(公告)号：US20170275722A1

公开(公告)日：2017-09-28

申请号：US15503958

申请日：2015-02-27

Applicant: JFE STEEL CORPORATION

Inventor： Shuji NISHIDA ,  Tomohiro ISHII ,  Tetsuyuki NAKAMURA ,  Mitsuyuki FUJISAWA ,  Chikara KAMI

IPC: C21D9/46 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/60 ,  C21D8/02 ,  C21D6/00 ,  C22C38/54

CPC classification number: C21D9/46 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/60

Abstract: Provided is a ferritic stainless steel sheet having excellent corrosion resistance and workability equal to or better than SUH409L. The ferritic stainless steel sheet contains 0.025% or less C, 0.01% to 1.00% Si, 0.05% to 1.00% Mn, 0.020% to 0.040% P, 0.030% or less S, 0.001% to 0.100% Al, 12.5% to 14.4% Cr, 0.01% to 0.80% Ni, 0.11% to 0.40% Ti, 0.010% to 0.100% Nb, and 0.020% or less N by mass %, the remainder being Fe and inevitable impurities.

公开(公告)号：US20180345317A1

公开(公告)日：2018-12-06

申请号：US15781185

申请日：2016-12-02

Applicant: JFE STEEL CORPORATION

Inventor： Junichiro HIRASAWA ,  Takayoshi YANO ,  Shin ISHIKAWA ,  Chikara KAMI

IPC: B05D7/14 ,  C09D7/40 ,  C09D133/12 ,  C09D125/04 ,  C10M159/06 ,  B32B15/082 ,  B32B15/18 ,  C10M173/02

CPC classification number: B05D7/14 ,  B32B15/08 ,  B32B15/082 ,  B32B15/085 ,  B32B15/18 ,  C08K5/098 ,  C08L23/06 ,  C09D5/00 ,  C09D7/40 ,  C09D7/63 ,  C09D7/65 ,  C09D133/00 ,  C09D133/08 ,  C10M139/00 ,  C10M145/10 ,  C10M159/06 ,  C10M173/02

Abstract: A lubricant coating material for stainless steel sheets that has excellent press formability (deep drawability and mold galling resistance) and a lubricated stainless steel sheet in which the same is used includes: a lubricant coating material for stainless steel sheets that contains an acrylic resin and polyethylene wax, the polyethylene wax having a melting point of 115° C. or greater, and the content of the polyethylene wax ranging from greater than 20 parts by mass to 50 parts by mass with respect to 100 parts by mass of the acrylic resin; and a lubricated stainless steel sheet in which the same is used.

公开(公告)号：US20180083294A1

公开(公告)日：2018-03-22

申请号：US15564098

申请日：2016-03-22

Applicant: JFE STEEL CORPORATION

Inventor： Takayoshi YANO ,  Shin ISHIKAWA ,  Chikara KAMI

IPC: H01M8/0202 ,  C25D5/36 ,  C25D7/00 ,  H01M8/1018

CPC classification number: H01M8/0202 ,  C23C18/1651 ,  C23C18/1653 ,  C23C28/00 ,  C23C28/32 ,  C23C28/34 ,  C23C28/343 ,  C25D3/12 ,  C25D3/38 ,  C25D3/46 ,  C25D3/562 ,  C25D3/62 ,  C25D5/12 ,  C25D5/36 ,  C25D5/38 ,  C25D5/48 ,  C25D7/00 ,  C25D15/00 ,  H01M8/0208 ,  H01M8/021 ,  H01M8/0228 ,  H01M8/10 ,  H01M8/1018 ,  H01M2008/1095

Abstract: A metal sheet for separators of polymer electrolyte fuel cells having both excellent corrosion resistance in the use environment of separators of polymer electrolyte fuel cells and excellent adhesion property between a substrate and a surface-coating layer even in the case where the surface-coating layer is made thinner is provided. A metal sheet for separators of polymer electrolyte fuel cells includes: a substrate made of metal; and a surface-coating layer with which the substrate is coated, with a strike layer in between, wherein a coating weight of the strike layer is 0.001 g/m2 to 1.0 g/m2.

公开(公告)号：US20170349995A1

公开(公告)日：2017-12-07

申请号：US15538335

申请日：2015-11-17

Applicant: JFE STEEL CORPORATION

Inventor： Kunio FUKUDA ,  Shin ISHIKAWA ,  Mitsuyuki FUJISAWA ,  Katsuhisa YAMAUCHI ,  Chikara KAMI

IPC: C23C8/26 ,  C22C38/42 ,  C22C38/02 ,  C21D1/76 ,  C22C38/00 ,  C21D9/46 ,  C22C38/48 ,  C22C38/04

Abstract: Provided is a ferritic stainless steel having a chemical composition containing, in mass %: 0.003% to 0.025% of C; 0.05% to 1.00% of Si; 0.05% to 1.00% of Mn; 0.04% or less of P; 0.01% or less of S; 16.0% to 23.0% of Cr; 0.20% to 0.80% of Cu; 0.05% to 0.60% of Ni; 0.20% to 0.70% of Nb; 0.005% to 0.020% of N; and the balance being Fe and incidental impurities, in which a nitrogen-enriched layer is present that has a nitrogen concentration peak value of 0.03 mass % to 0.30 mass % at a depth of within 0.05 μm of a surface of the steel.

公开(公告)号：US20160145709A1

公开(公告)日：2016-05-26

申请号：US14903842

申请日：2014-07-08

Applicant: JFE STEEL CORPORATION

Inventor： Yuka MIYAMOTO ,  Takashi KOBAYASHI ,  Chikara KAMI ,  Hayato SAITO ,  Kaneharu OKUDA

IPC: C21D9/46 ,  C22C38/06 ,  C22C38/04 ,  C21D1/26 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C22C38/60 ,  C22C38/02

CPC classification number: C21D9/46 ,  C21D1/26 ,  C21D1/32 ,  C21D1/74 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0247 ,  C21D8/0263 ,  C21D2211/003 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60

Abstract: There is provided is a high-carbon hot-rolled steel sheet and method for producing the same. The steel sheet has excellent hardenability consistently, even when annealed in a nitrogen atmosphere, and excellent formability. The steel sheet has a hardness in the range of 83 HRB or less and a total elongation of 30% or more before being subjected to a quenching treatment.

Abstract translation: 提供一种高碳热轧钢板及其制造方法。 即使在氮气氛中退火，钢板也具有优异的淬透性，成型性优异。 在进行淬火处理之前，钢板的硬度为83HRC以下，总伸长率为30％以上。

公开(公告)号：US20180375116A1

公开(公告)日：2018-12-27

申请号：US16064633

申请日：2016-12-15

Applicant: JFE STEEL CORPORATION

Inventor： Takayoshi YANO ,  Shin ISHIKAWA ,  Chikara KAMI

IPC: H01M8/0247 ,  H01M8/021 ,  H01M8/0228

Abstract: A stainless steel sheet for fuel cell separators including a substrate made of stainless steel sheet, and low-electrical-resistivity metal particles, where the substrate has a textured structure formed on a surface thereof with the average interval between the projected parts of the textured structure being 10 nm or more and 300 nm or less, the low-electrical-resistivity metal particles have an average particle size of 50 nm to 1.0 μm, the low-electrical-resistivity metal particles are attached to the surface of the substrate having the textured structure at a density of 1.0 particle or more for 1 μm2, and a ratio of the average particle size of the low-electrical-resistivity metal particles to the average interval between the projected parts is 1.0 to 15.0.

公开(公告)号：US20180312945A1

公开(公告)日：2018-11-01

申请号：US16027803

申请日：2018-07-05

Applicant: JFE STEEL CORPORATION

Inventor： Chikara KAMI ,  Sota GOTO

IPC: C22C38/00 ,  C22C38/58 ,  C21D6/00 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/54 ,  C21D9/46 ,  C21D8/12 ,  C21D8/02

CPC classification number: C22C38/001 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/1222 ,  C21D8/1261 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

Abstract: A method for manufacturing a hot rolled steel sheet having a low yield ratio and that is excellent in low-temperature toughness, the steel sheet having a specified chemical composition. The method comprises hot rolling a steel material into a steel sheet, cooling the steel material using a cooling process comprising a first cooling and a second cooling, and performing a coiling process on the steel sheet in such a manner that the coiling temperature is 450° C. or more in terms of surface temperature of the steel sheet.