公开(公告)号：EP2957652B1

公开(公告)日：2017-11-01

申请号：EP14751176.0

申请日：2014-02-18

申请人： JFE Steel Corporation

发明人： MATSUDA, Hiroshi ,  TAKAHASHI, Hideyuki ,  YAMAGUCHI, Hiroi ,  HAYAKAWA, Yasuyuki ,  TERASHIMA, Takashi ,  WAKISAKA, Yuiko

IPC分类号： C23C8/38 ,  C21D8/12 ,  C21D9/46 ,  H01F1/16

CPC分类号： C23C8/38 ,  C21D1/09 ,  C21D1/773 ,  C21D8/12 ,  C21D8/1255 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/02 ,  C23C8/02 ,  C23C8/26 ,  H01F1/14775 ,  H01F1/16

公开(公告)号：EP2940160B1

公开(公告)日：2017-02-01

申请号：EP13869216.5

申请日：2013-12-25

申请人： JFE Steel Corporation

发明人： HAYAKAWA, Yasuyuki ,  SHINGAKI, Yukihiro ,  YAMAGUCHI, Hiroi ,  MATSUDA, Hiroshi ,  WAKISAKA, Yuiko

IPC分类号： C21D8/12 ,  B21B3/00 ,  B21B45/00 ,  C22C38/00 ,  C22C38/60 ,  C23C8/26 ,  C23C8/50 ,  H01F1/16 ,  C23C22/00

CPC分类号： C21D8/1261 ,  C21D1/26 ,  C21D6/001 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/60 ,  C23C8/02 ,  C23C8/04 ,  C23C8/26 ,  C23C8/50 ,  C23C8/80 ,  H01F1/14783 ,  H01F1/16 ,  H01F41/02

公开(公告)号：EP2940159B1

公开(公告)日：2019-03-20

申请号：EP13867430.4

申请日：2013-12-25

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  YAMAGUCHI, Hiroi ,  WAKISAKA, Yuiko ,  MATSUDA, Hiroshi ,  TERASHIMA, Takashi

IPC分类号： C21D8/12 ,  B21B3/00 ,  B21B45/00 ,  C22C38/00 ,  C22C38/60 ,  C23C8/26 ,  C23C8/50 ,  H01F1/16 ,  C23C22/00

公开(公告)号：EP2957652A1

公开(公告)日：2015-12-23

申请号：EP14751176.0

申请日：2014-02-18

申请人： JFE Steel Corporation

发明人： MATSUDA, Hiroshi ,  TAKAHASHI, Hideyuki ,  YAMAGUCHI, Hiroi ,  HAYAKAWA, Yasuyuki ,  TERASHIMA, Takashi ,  WAKISAKA, Yuiko

IPC分类号： C23C8/38 ,  C21D8/12 ,  C21D9/46 ,  H01F1/16

CPC分类号： C23C8/38 ,  C21D1/09 ,  C21D1/773 ,  C21D8/12 ,  C21D8/1255 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/02 ,  C23C8/02 ,  C23C8/26 ,  H01F1/14775 ,  H01F1/16

摘要： Provided is an apparatus for continuously nitriding a strip continuously being fed after cold rolling and before secondary recrystallization annealing in a production line of a grain-oriented electrical steel sheet, comprising: a nitriding zone for nitriding the strip; a cooling zone for cooling the strip; and an optional heating zone provided upstream of the nitriding zone for heating the strip, wherein, the nitriding zone is provided with glow discharge electrodes, and by plasma nitriding the strip by glow discharge with the glow discharge electrodes functioning as positive electrodes and the strip functioning as a negative electrode, inhibitor forming elements are uniformly dispersed over the full length and full width of the strip and a grain-oriented electrical steel sheet with excellent magnetic properties with no variation is obtained.

摘要翻译： 本发明提供一种对晶粒取向电工钢板的生产线中的冷轧后，二次再结晶退火前连续供给的钢带进行连续渗氮的装置，其特征在于，具备：对钢带进行氮化处理的氮化处理区域; 用于冷却带材的冷却区域; 以及设置在氮化区上游用于加热钢带的可选加热区，其中氮化区设有辉光放电电极，并且通过辉光放电等离子氮化条，辉光放电电极用作正极，并且条的功能 作为负极，将抑制剂形成元素均匀地分散在条的全长和整个宽度上，并且获得具有优异磁性但没有变化的晶粒取向电工钢板。

公开(公告)号：EP3128028B1

公开(公告)日：2019-04-24

申请号：EP15773274.4

申请日：2015-03-26

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  WAKISAKA, Yuiko ,  INOUE, Hirotaka

IPC分类号： C22C38/00 ,  C21D8/12 ,  C22C38/60 ,  H01F1/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/40 ,  C21D6/00 ,  C21D9/46 ,  C21D1/26 ,  C22C38/34

公开(公告)号：EP3266896A1

公开(公告)日：2018-01-10

申请号：EP16759063.7

申请日：2016-03-04

申请人： JFE Steel Corporation

发明人： IMAMURA, Takeshi ,  TAKENAKA, Masanori ,  WAKISAKA, Yuiko

IPC分类号： C22C38/00 ,  C21D8/12 ,  C22C38/60 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C21D6/00 ,  C21D9/46 ,  H01F1/16

CPC分类号： C22C38/60 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1238 ,  C21D8/1244 ,  C21D8/125 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C21D8/1288 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  H01F1/16

摘要： Provided are a grain-oriented electrical steel sheet with low iron loss even when including at least one grain boundary segregation element among Sb, Sn, Mo, Cu, and P, and a method for manufacturing the same. In our method, Pr is controlled to satisfy Pr ≤ -0.075T + 18, where T > 10, 5 13 m -2 or less can be obtained even when the grain-oriented electrical steel sheet contains at least one of Sb, Sn, Mo, Cu, and P.

摘要翻译： 本发明提供一种即使在Sb，Sn，Mo，Cu，P中含有至少一种晶界偏析元素的情况下也具有低铁损的晶粒取向电工钢板及其制造方法。 在我们的方法中，控制Pr以满足Pr≤-0.075T + 18，其中T>10,5≤Pr，T（hr）是最终退火后将二次再结晶片的温度从800℃降低到所需的时间 到400℃，并且Pr（MPa）是平坦化退火过程中二次重结晶片材上的线张力。 其结果是，即使在方向性电磁钢板中，也能够得到铁损低，钢板的晶界附近的位错密度为1.0×10 13 m -2以下的取向性电磁钢板 含有Sb，Sn，Mo，Cu和P中的至少一种。

公开(公告)号：EP2940160A1

公开(公告)日：2015-11-04

申请号：EP13869216.5

申请日：2013-12-25

申请人： JFE Steel Corporation

发明人： HAYAKAWA, Yasuyuki ,  SHINGAKI, Yukihiro ,  YAMAGUCHI, Hiroi ,  MATSUDA, Hiroshi ,  WAKISAKA, Yuiko

IPC分类号： C21D8/12 ,  B21B3/00 ,  B21B45/00 ,  C22C38/00 ,  C22C38/60 ,  C23C8/26 ,  C23C8/50 ,  H01F1/16 ,  C23C22/00

CPC分类号： C21D8/1261 ,  C21D1/26 ,  C21D6/001 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/60 ,  C23C8/02 ,  C23C8/04 ,  C23C8/26 ,  C23C8/50 ,  C23C8/80 ,  H01F1/14783 ,  H01F1/16 ,  H01F41/02

摘要： Grain-oriented electrical steel sheets with good magnetic properties are industrially stably produced, by using as the material, a steel slab having a composition consisting of, by mass% or mass ppm, C: 0.08 % or less, Si: 2.0 % to 4.5 % and Mn: 0.5 % or less, S: less than 50 ppm, Se: less than 50 ppm,O: less than 50 ppm, sol.Al: less than 100 ppm, N in a range satisfying [sol.Al] × (14/27) ppm ≤ N ≤ 80 ppm, and the balance being Fe and incidental impurities, wherein after cold rolling and before the start of secondary recrystallization annealing, the cold rolled sheet is subjected to nitriding treatment to obtain a nitrogen content of 50 mass ppm or more and 1000 mass ppm or less, and a total content of 0.2 mass% to 15 mass% of a sulfide and/or sulfate is contained in an annealing separator, and a staying time in the temperature range of 300 °C to 800 °C in the heating stage of secondary recrystallization annealing of 5 hours or more is secured to precipitate silicon nitride (Si 3 N 4 ) and MnS, and using the silicon nitride in combination with MnS as inhibiting force for normal grain growth to significantly reduce variation of magnetic properties.

摘要翻译： 通过以质量％或质量ppm为基准，以C：0.08％以下，Si：2.0％〜4.5％组成的钢板，以工业上稳定地制造具有良好磁特性的晶粒取向电工钢板 ％，Mn：0.5％以下，S：小于50ppm，Se：小于50ppm，O：小于50ppm，sol.Al：小于100ppm，满足[sol.Al]× （14/27）ppm‰¤N‰80ppm，余量为Fe和杂质，其中冷轧后和二次再结晶退火开始前，对冷轧板进行氮化处理，得到氮含量 50质量ppm以上且1000质量ppm以下，退火分离器中含有硫化物和/或硫酸盐的合计含量为0.2质量％〜15质量％，在300℃的温度范围内的停留时间 在二次再结晶退火的加热阶段中将C至800℃保持5小时以上以沉淀硅氮化物 e（Si 3 N 4）和MnS，并且使用氮化硅与MnS组合作为正常晶粒生长的抑制力，以显着降低磁性能的变化。

公开(公告)号：EP2940158B1

公开(公告)日：2017-04-19

申请号：EP13867249.8

申请日：2013-12-25

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  HAYAKAWA, Yasuyuki ,  YAMAGUCHI, Hiroi ,  MATSUDA, Hiroshi ,  WAKISAKA, Yuiko

IPC分类号： C21D8/12 ,  B21B3/00 ,  B21B45/00 ,  C22C38/02 ,  C22C38/60 ,  C23C8/26 ,  C23C8/50 ,  H01F1/16 ,  C23C22/00

CPC分类号： H01F1/14775 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1283 ,  C21D8/1294 ,  C21D2211/004 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  C23C8/02 ,  C23C8/26 ,  C23C8/50 ,  C23C8/80 ,  H01F1/16 ,  H01F41/02

摘要： Grain-oriented electrical steel sheets with good magnetic properties are industrially stably produced, by subjecting a steel slab to hot rolling, without re-heating or after re-heating, to obtain a hot rolled sheet, the steel slab having a composition containing, by mass% or mass ppm, C: 0.08 % or less, Si: 2.0 % to 4.5 % and Mn: 0.5 % or less, with S, Se and O each limited to less than 50 ppm, sol.Al limited to less than 100 ppm, and N controlled within a range satisfying the relation of sol.Al/(26.98/14.00) ppm ‰¤ N ‰¤ 80 ppm, and the balance including Fe and incidental impurities; then subjecting the hot rolled sheet to annealing and rolling to obtain a cold rolled sheet of final sheet thickness; then subjecting the cold rolled sheet to nitriding treatment with a nitrogen increase of 50 ppm or more and 1000 ppm or less, during or after primary recrystallization annealing; then applying an annealing separator on the cold rolled sheet; and setting the staying time in the temperature range of 300 °C to 800 °C in the heating stage of secondary recrystallization annealing to 5 hours or more to 150 hours or less to precipitate silicon nitride (Si 3 N 4 ) at grain boundaries and allowing the silicon nitride to act as pinning force for normal grain growth to significantly reduce variation of magnetic properties.

公开(公告)号：EP3128028A1

公开(公告)日：2017-02-08

申请号：EP15773274.4

申请日：2015-03-26

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  WAKISAKA, Yuiko ,  INOUE, Hirotaka

IPC分类号： C22C38/00 ,  C21D8/12 ,  C22C38/60 ,  H01F1/16

CPC分类号： C21D9/46 ,  C21D1/26 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/1255 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/34 ,  C22C38/40 ,  C22C38/60 ,  C23C8/26 ,  C23C8/50 ,  H01F1/16

摘要： Provided is a primary recrystallization annealed sheet obtainable after an intermediate step of nitriding treatment in a grain-oriented electrical steel sheet production process using, as a material, a steel slab containing, in mass%, 0.001% to 0.10% of C, 1.0% to 5.0% of Si, 0.01% to 0.5% of Mn, 0.002% to 0.040% of one or two selected from S and Se, 0.001% to 0.050% of sol.Al, and 0.0010% to 0.020% of N, the remainder being Fe and incidental impurities. A nitrogen increase ΔN due to the nitriding treatment is 1000 ppm or less, and N intensity according to X-ray fluorescence at the steel sheet surface is 0.59 or greater. As a result, uniform sheet thickness direction dispersion of nitrides as inhibitors can be achieved with industrial reliability in a grain-oriented electrical steel sheet production process including nitriding, thereby enabling reliable production of grain-oriented electrical steel sheets having good magnetic properties.

公开(公告)号：EP2940159A1

公开(公告)日：2015-11-04

申请号：EP13867430.4

申请日：2013-12-25

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  YAMAGUCHI, Hiroi ,  WAKISAKA, Yuiko ,  MATSUDA, Hiroshi ,  TERASHIMA, Takashi

IPC分类号： C21D8/12 ,  B21B3/00 ,  B21B45/00 ,  C22C38/00 ,  C22C38/60 ,  C23C8/26 ,  C23C8/50 ,  H01F1/16 ,  C23C22/00

CPC分类号： H01F1/14783 ,  C21D6/005 ,  C21D6/008 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/22 ,  C22C38/60 ,  C23C8/26 ,  H01F1/16 ,  H01F1/18 ,  H01F41/005 ,  H01F41/02

摘要： Grain-oriented electrical steel sheets with good magnetic properties are industrially stably produced, by using as the material, the steel slab having a composition consisting of, by mass% or mass ppm, C: 0.08 % or less, Si: 2.0 % to 4.5 %, Mn: 0.5 % or less, S: less than 50 ppm, Se: less than 50 ppm, O: less than 50 ppm, sol.Al: less than 100 ppm, N: 80 ppm or less, and the balance being Fe and incidental impurities, and satisfying the relation of sol.Al (ppm) - N (ppm) x (26.98/14.00) ≤ 30 ppm, and by performing nitriding treatment, with a nitrogen increase (ΔN) being specified by the following formula (1) or (2), before, during or after primary recrystallization annealing, to precipitate silicon nitride (Si 3 N 4 ) at grain boundaries, and allowing the silicon nitride to act as inhibiting force for normal grain growth to significantly reduce variation of magnetic properties: when sol . Al - N × 26.98 / 14.00 ≤ 0 , 50 ppm ≤ ΔN ≤ 1000 ppm
, or when 0 sol . Al - N × 26.98 / 14.00 ≤ 30 , N - soll . Al × 14.00 / 26.98 + 100 ≤ ΔN ≤ N - soll . Al × 14.00 / 26.98 + 1000

摘要翻译： 具有良好的磁特性的晶粒取向电磁钢板在工业上稳定地制造，通过使用作为材料，其组成由...组成的钢坯，以质量％计或质量ppm，C：0.08％或以下，Si：2.0％〜4.5 ％以下，Mn：0.5％以下，S：小于50ppm，硒：小于50ppm，O：小于50ppm以下，sol.Al：小于100ppm，N：80ppm以下，且余量由 的Fe和不可避免的杂质，并且满足sol.Al（PPM）的关系 - N（PPM）×（26.98 / 14:00）‰¤30 ppm，且通过进行氮化处理，具有氮的增加（“N）由所述被指定的 下式（1）或（2）之前，期间或一次再结晶退火后，以沉淀在晶界氮化硅（Si 3 N 4），和使硅氮化物，以充当用于正常晶粒生长显着减少抑制力 磁特性的变化：当溶胶。 铝 - N×26.98 / 14时‰¤0，50ppm的‰¤“N‰¤1000ppm以下，或者当0 <溶胶。 铝 - N×26.98 / 14时‰¤30，N - 意图。 的Al x 14.00 / 26.98 + 100‰¤“N‰¤N - 意图。 的Al x 14.00 / 26.98 + 1000