公开(公告)号：EP3176280A4

公开(公告)日：2017-10-04

申请号：EP15828109

申请日：2015-07-23

申请人： JFE STEEL CORP

发明人： FUKUDA KUNIO ,  FUJISAWA MITSUYUKI ,  ISHII TOMOHIRO ,  ISHIKAWA SHIN ,  KAMI CHIKARA

IPC分类号： C22C38/00 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C23C8/26

CPC分类号： C21D9/46 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D8/0278 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C23C8/26

摘要： Provided is a ferritic stainless steel that has excellent corrosion resistance and displays good brazing properties when brazing is carried out at high temperature using a Ni-containing brazing metal. These effects are obtained as a result of the steel having a chemical composition containing, in mass%: 0.003%-0.020% of C; 0.05%-1.00% of Si; 0.10%-0.50% of Mn, 0.04% or less of P; 0.01% or less of S; 16.0%-25.0% of Cr; 0.05%-0.60% of Ni; 0.25%-0.45% of Nb; 0.005%-0.15% of Al; 0.005%-0.030% of N; and at least one selected from 0.50%-2.50% of Mo and 0.05%-0.80% of Cu, the balance being Fe and incidental impurities, and as a result of a nitrogen-enriched layer being created that has a nitrogen concentration peak value of 0.03 to 0.30 mass% at a depth of within 0.05 µm of a surface of the steel.

摘要翻译： 本发明提供一种铁素体系不锈钢，其使用含Ni的钎焊金属在高温下进行钎焊时，具有优异的耐腐蚀性，并且显示良好的钎焊性。 这些效果是由于具有以质量％计含有C：0.003％〜0.020％的化学组成的钢的结果， ，Si：0.05％〜1.00％ Mn：0.10〜0.50％，P：0.04％以下; S：0.01％以下; Cr：16.0％〜25.0％ Ni：0.05％-0.60％; Nb：0.25％〜0.45％ 0.005％-0.15％的Al; N：0.005〜0.030％ 以及选自0.50％〜2.50％的Mo和0.05％〜0.80％的Cu，其余为Fe和不可避免的杂质中的至少一种，并且由此产生的氮富集层的氮浓度峰值为 在钢的表面0.05μm以内的深度中为0.03〜0.30质量％。

公开(公告)号：EP3153599A4

公开(公告)日：2017-06-14

申请号：EP15838134

申请日：2015-07-27

申请人： JFE STEEL CORP

发明人： HIRASAWA JUNICHIRO ,  YANO TAKAYOSHI ,  ISHIKAWA SHIN ,  KAMI CHIKARA

IPC分类号： C22C38/00 ,  B01D53/90 ,  B01D53/94 ,  C21D9/46 ,  C22C38/50 ,  F01N3/08 ,  F01N3/28

CPC分类号： B01D53/90 ,  B01D53/94 ,  C21D9/46 ,  C22C38/00 ,  C22C38/50 ,  F01N3/08 ,  F01N3/28 ,  Y02A50/2325 ,  Y02T10/24

摘要： [Abstract] Provided is a ferritic stainless steel sheet for a urea SCR casing which is excellent in terms of corrosion resistance in a urea SCR environment and which increases the durability of a urea SCR casing. The steel sheet has a chemical composition containing, by mass%, C: 0.020% or less, Si: 0.01% or more and 0.50% or less, Mn: 0.01% or more and 0.50% or less, P: 0.040% or less, S: 0.010% or less, Al: 0.01% or more and 0.20% or less, Cr: 20.5% or more and 24.0% or less, Cu: 0.40% or more and 0.80% or less, Ni: 0.05% or more and 0.6% or less, N: 0.020% or less, one or both selected from among Ti: 0.01% or more and 0.40% or less and Nb: 0.01% or more and 0.55% or less, and the balance being Fe and inevitable impurities, in which the relationship Ti + Nb x 48/93 ‰¥ 8 x (C + N) (in the relational expression, Ti, Nb, C, and N denote the contents (mass%) of the corresponding chemical elements) is satisfied.

摘要翻译： [摘要]本发明提供一种尿素SCR壳体用的铁素体系不锈钢板，其尿素SCR环境下的耐腐蚀性优异，并且尿素SCR壳体的耐久性提高。 钢板的组成以质量％计含有C：0.020％以下，Si：0.01％以上且0.50％以下，Mn：0.01％以上且0.50％以下，P：0.040％以下 ，S：0.010％以下，Al：0.01％以上且0.20％以下，Cr：20.5％以上且24.0％以下，Cu：0.40％以上且0.80％以下，Ni：0.05％以上 和0.6％或更少，N：0.020％或更少，选自Ti：0.01％或更多和0.40％或更少中的一种或两种和Nb：0.01％或更多和0.55％或更少，余量为Fe和不可避免的 Ti + Nb x 48/93‰8×（C + N）（在关系式中，Ti，Nb，C和N表示相应化学元素的含量（质量％））的关系的杂质是 满意。

公开(公告)号：EP3020839A4

公开(公告)日：2016-06-29

申请号：EP14822734

申请日：2014-07-08

申请人： JFE STEEL CORP

发明人： MIYAMOTO YUKA ,  KOBAYASHI TAKASHI ,  KAMI CHIKARA ,  SAITO HAYATO ,  OKUDA KANEHARU

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/60

CPC分类号： C21D9/46 ,  C21D1/26 ,  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 ,  C22C38/60

摘要： Provided is a high-carbon hot-rolled steel sheet composed of a steel containing B, the steel sheet having excellent hardenability consistently even when annealed in a nitrogen atmosphere and excellent formability, that is, specifically, a hardness of 83 HRB or less and a total elongation of 30% or more, or further excellent formability, that is, specifically, a hardness of 75 HRB or less and a total elongation of 38% or more, before being subjected to a quenching treatment. The high-carbon hot-rolled steel sheet contains C: 0.20% or more and 0.53% or less, Si: 0.10% or less, Mn: 0.50% or less, P: 0.03% or less, S: 0.010% or less, sol. Al: 0.10% or less, N: 0.0050% or less, B: 0.0005% or more and 0.0050% or less, and one or more elements selected from Sb, Sn, Bi, Ge, Te, and Se such that the total content of the one or more elements is 0.002% or more and 0.030% or less and has a microstructure including ferrite and cementite. The density of the cementite in the ferrite grains is 0.15 particle/µm 2 or less when C: more than 0.40% and 0.53% or less. The density of the cementite in the ferrite grains is 0.10 particle/µm 2 or less when C: 0.20% or more and 0.40% or less.

公开(公告)号：EP2952603A4

公开(公告)日：2016-02-24

申请号：EP14746693

申请日：2014-01-23

申请人： JFE STEEL CORP

发明人： NAKAJIMA KATSUMI ,  YAMAZAKI KAZUHIKO ,  KAMI CHIKARA

IPC分类号： C22C38/00 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/14 ,  C22C38/54 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28

CPC分类号： 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 ,  C22C38/22 ,  C22C38/28 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  Y02P10/212

摘要： 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. A high-strength hot-rolled steel sheet having high burring formability contains, on a mass percent basis, C: 0.03% or more and 0.1% or less, Si: less than 0.5%, Mn: more than 0.7% 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: 0.1% or more and 0.25% or less such that C, S, N, and Ti satisfy Ti* ‰¥ 0.1 and C x (48/12) - 0.14

摘要翻译： 提供了一种具有高切削成形性的高强度热轧钢板和制造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：0.03％以上且0.1％以下，Si：小于0.5％，Mn：大于0.7％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：0.1％以上且0.25％以下，C，S，N， Ti满足Ti *‰¥0.1，C x（48/12）-0.14

公开(公告)号：EP2392682A4

公开(公告)日：2015-02-25

申请号：EP10735966

申请日：2010-01-29

申请人： JFE STEEL CORP

发明人： KAMI CHIKARA ,  NAKATA HIROSHI ,  NAKAGAWA KINYA

IPC分类号： C22C38/00 ,  B21B1/26 ,  B21B3/00 ,  C21D8/02 ,  C22C38/14 ,  C22C38/58

CPC分类号： C22C38/58 ,  B21B3/00 ,  C21D8/0205 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： A method of manufacturing a thick high-tensile-strength hot-rolled steel sheet which possesses both of high strength with TS of 510MPa or more and excellent ductility thus exhibiting the excellent strength-ductility balance, and further possesses excellent low temperature toughness is provided. To be more specific, a high-tensile-strength hot-rolled steel sheet has a composition which contains 0.02 to 0.08% C, 0.01 to 0.10% Nb, 0.001 to 0.05% Ti and Fe and unavoidable impurities as a balance, wherein the steel sheet contains C, Ti and Nb in such a manner that (Ti+(Nb/2))/C

公开(公告)号：EP1193322A4

公开(公告)日：2004-06-30

申请号：EP01904406

申请日：2001-02-14

申请人： JFE STEEL CORP

发明人： KAMI CHIKARA ,  TOSAKA AKIO ,  OSAWA KAZUNORI ,  KANEKO SHINJIRO ,  YAMAZAKI TAKUYA ,  OKUDA KANEHARU ,  ISHIKAWA TAKASHI

IPC分类号： C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38 ,  C22C38/58

CPC分类号： C21D8/0236 ,  C21D8/0226 ,  C21D8/0268 ,  C21D8/0273 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38

摘要： A high tensile cold-rolled steel sheet which has a chemical composition in mass % wherein C: 0.15 % or less, Al: 0.02 % or less and N: 0.0050 to 0.0250 %, N/Al is adjusted to 0.3 or more, and the content of N in the state of solid solution is 0.0010 % or more, and a structure containing a ferrite phase having an average crystal grain size of 10 mu m or less in 50 area % or more and optionally a martensite phase as a second phase in 30 area % or more. The steel sheet is produced by a method which comprises subjecting a slab having the above composition to a hot rolling at a finish rolling output temperature of 800 DEG C or higher and reeling at a temperature of 750 DEG C or lower, to prepare a hot-rolled sheet, subjecting the hot-rolled sheet to a cold rolling, and then subjecting the resultant cold-rolled sheet to a continuous annealing under conditions of a temperature not lower than its recrystallization temperature and not higher than 900 DEG C and a holding time of 10 to 120 s, to a primary cooling to a temperature region of 500 DEG C or lower at a cooling rate of 10 to 300 DEG C/s, and optionally to a secondary cooling of a residence for 300 s or less at a temperature range not lower than a temperature of termination of the primary cooling and not lower than 350 DEG C. The high tensile steel sheet is excellent in formability, impact resistance characteristics and strain aging hardening properties.

公开(公告)号：EP3336942A4

公开(公告)日：2018-07-18

申请号：EP16834806

申请日：2016-07-29

申请人： JFE STEEL CORP

发明人： YANO TAKAYOSHI ,  ISHIKAWA SHIN ,  KAMI CHIKARA

IPC分类号： H01M8/0202 ,  C23C18/16 ,  C23C28/00 ,  C25D3/12 ,  C25D3/40 ,  C25D3/46 ,  C25D3/48 ,  C25D3/56 ,  C25D5/12 ,  C25D5/26 ,  C25D5/28 ,  C25D5/34 ,  C25D5/36 ,  C25D5/38 ,  C25D7/00 ,  C25D7/06 ,  C25D11/34 ,  C25D15/00 ,  H01M8/10

CPC分类号： H01M8/0228 ,  C23C18/1653 ,  C23C28/00 ,  C25D3/12 ,  C25D3/40 ,  C25D3/46 ,  C25D3/48 ,  C25D3/562 ,  C25D5/12 ,  C25D5/36 ,  C25D5/38 ,  C25D7/06 ,  C25D11/34 ,  C25D15/00 ,  H01M8/0202 ,  H01M8/0206 ,  H01M8/0215 ,  H01M8/10 ,  H01M8/1018 ,  H01M2008/1095 ,  Y02P70/56

摘要： A metal sheet for separators of polymer electrolyte fuel cells comprises: a substrate made of metal; and a surface-coating layer with which a surface of the substrate is coated, with a strike layer in between, wherein a coating ratio of the strike layer on the substrate is 2 % to 70 %, the strike layer is distributed in a form of islands, and a maximum diameter of the islands of the strike layer as coating portions is 1.00 µm or less and is not greater than a thickness of the surface-coating layer.

公开(公告)号：EP3318649A4

公开(公告)日：2018-07-04

申请号：EP15897075

申请日：2015-07-02

申请人： JFE STEEL CORP

发明人： MIZUTANI AKITO ,  YOSHINO MASATAKA ,  FUJISAWA MITSUYUKI ,  KAMI CHIKARA

IPC分类号： C22C38/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

CPC分类号： C21D9/46 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

摘要： Provided are a material for cold rolled stainless steel sheets having sufficient corrosion resistance, excellent surface quality, excellent formability, and excellent ridging resistance; a method for manufacturing the same; and a cold rolled steel sheet. A material for cold rolled stainless steel sheets according to the present invention contains C: 0.005% to 0.025%, Si: 0.02% to 0.50%, Mn: 0.55% to 1.0%, P: 0.040% or less, S: 0.01% or less, Cr: 15.5% to 18.0%, Ni: 0.01% to 1.0%, Al: 0.001% to 0.10%, and N: 0.005% to 0.025% on a mass basis, the remainder being Fe and inevitable impurities, and has a metallographic structure containing 5% to 20% of a martensite phase in terms of volume fraction, the remainder being a ferrite phase. Furthermore, the proportion of selectively dissolved ferrite phase grain boundaries among ferrite phase grain boundaries exposed on a surface of a steel sheet is 20% or less of the total length of grain boundaries.

公开(公告)号：EP3103889A4

公开(公告)日：2017-03-08

申请号：EP15746068

申请日：2015-02-03

申请人： JFE STEEL CORP

发明人： NAKAMURA TETSUYUKI ,  OTA HIROKI ,  KAMI CHIKARA

IPC分类号： C22C38/00 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  F01N13/16

CPC分类号： C21D9/46 ,  C21D6/002 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  F01N13/16 ,  F01N2530/04

摘要： Provided are a cold rolled and annealed ferritic stainless steel sheet having good high-temperature fatigue resistance and good oxidation resistance and a hot rolled and annealed ferritic stainless steel sheet suitable as a material for the cold rolled and annealed steel sheet. The hot rolled and annealed ferritic stainless steel sheet has a composition containing, on a mass percent basis, 0.015% or less of C, 1.00% or less of Si, 1.00% or less of Mn, 0.040% or less of P, 0.010% or less of S, 12.0% or more and 23.0% or less of Cr, 0.20% or more and 1.00% or less of Al, 0.020% or less of N, 1.00% or more and 2.00% or less of Cu, and 0.30% or more and 0.65% or less of Nb, Si and Al being contained so as to satisfy Si ‰¥ Al, the balance being Fe and unavoidable impurities, and the hot rolled and annealed ferritic stainless steel sheet has a Vickers hardness less than 205. The cold rolled and annealed ferritic stainless steel sheet having good high-temperature fatigue resistance and good oxidation resistance is produced by subjecting the hot rolled and annealed ferritic stainless steel sheet to cold rolling and annealing treatment.

摘要翻译： 本发明提供一种冷轧退火具有良好的高温抗疲劳性和良好的耐氧化性和热轧退火铁素体不锈钢片适合作为用于冷轧的材料的铁素体不锈钢板和退火钢板。 热轧和退火的铁素体不锈钢片具有如下组成成分，以质量％计上，0.015％或更少的C，1：00％或更少的Si，1：00％或以下的Mn，0.040％或更少的P，0.010％ 或更少的S，12.0％以上且23.0％以下的Cr，0.20％或更多，1：00％或更少的Al，0.020％或更少的N，1：00％以上且2：00％或更少的Cu，和12时半 被包含％以上且0.65％以下的Nb，Si和Al的，以便满足硅‰¥的Al，其余为Fe和不可避免的杂质，和所述的热轧和退火的铁素体不锈钢片的维氏硬度大于205小于 该冷轧退火具有良好的高温抗疲劳性和良好的耐氧化性的铁素体不锈钢板是经过热轧和退火的铁素体不锈钢板冷轧和退火处理制造。

公开(公告)号：EP2987887A4

公开(公告)日：2016-09-14

申请号：EP14785555

申请日：2014-03-17

申请人： JFE STEEL CORP

发明人： YAMAZAKI KAZUHIKO ,  NAKAJIMA KATSUMI ,  KAMI CHIKARA

IPC分类号： C22C38/00 ,  B21B1/22 ,  B21B3/00 ,  C21D1/25 ,  C21D1/84 ,  C21D6/00 ,  C21D7/13 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/46 ,  C22C38/50 ,  C22C38/58

CPC分类号： C22C38/58 ,  B21B1/22 ,  B21B2001/225 ,  C21D1/25 ,  C21D1/84 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D7/13 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0463 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/46 ,  C22C38/50

摘要： A high strength hot rolled steel sheet having a tensile strength TS of 980 MPa or more, has a composition containing, on a percent by mass basis, C: 0.05% or more and 0.18% or less, Si: 1.0% or less, Mn: 1.0% or more and 3.5% or less, P: 0.04% or less, S: 0.006% or less, Al: 0.10% or less, N: 0.008% or less, Ti: 0.05% or more and 0.20% or less, V: more than 0.1% and 0.3% or less, and the balance being Fe and incidental impurities, and has a microstructure comprising a primary phase and a secondary phase, the primary phase being a bainite phase having an area fraction of more than 85%, the secondary phase being at least one of ferrite phase, martensite phase, and retained austenite phase, the secondary phase having an area fraction of 0% or more and less than 15% in total,the bainite phase having an average lath interval of laths of 400 nm or less, and the laths having an average long axis length of 5.0 µm or less.