公开(公告)号：EP4026921A1

公开(公告)日：2022-07-13

申请号：EP20861748.0

申请日：2020-09-04

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  SHIMOYAMA, Yusuke ,  HARADA, Akifumi

IPC分类号： C21D8/12 ,  C22C38/00 ,  C22C38/60 ,  H01F1/147

摘要： Disclosed is a grain-oriented electrical steel sheet capable of obtaining excellent magnetic properties stably over the entire coil length. A grain-oriented electrical steel sheet includes: a chemical composition containing, in mass%, C: 0.005 % or less, Si: 2.0 % to 4.5 %, and Mn: 0.01 % to 0.5 %, and, in mass ppm, N: 20 ppm or less, each of Se, Te, and O: less than 50 ppm, S: less than 30 ppm, and acid-soluble Al: less than 40 ppm, and Ti: less than 30 ppm, of which 5 ppm or more and 25 ppm or less is acid-soluble Ti, with the balance being Fe and inevitable impurities; and precipitates containing Ti and N with a grain size of 200 nm or more at a frequency of 0.05 grains/mm 2 or more.

公开(公告)号：EP3778930A1

公开(公告)日：2021-02-17

申请号：EP20197738.6

申请日：2011-08-04

申请人： JFE STEEL CORPORATION

发明人： SHINGAKI, Yukihiro ,  MAKIISHI, Noriko ,  IMAMURA, Takeshi

IPC分类号： C21D8/12

摘要： The present invention proposes measures to decrease noise generated by an iron core of a transformer when grain oriented electrical steel sheets each having realized low iron loss through magnetic domain refinement are stacked to constitute the iron core. Specifically, the present invention proposes a method for manufacturing a grain oriented electrical steel sheet, comprising: subjecting a grain oriented electrical steel sheet comprising 2.0 mass% to 8.0 mass% Si and having a forsterite film on a steel sheet surface to flattening annealing at 800°C or higher wherein an in-furnace tension during flattening annealing is 10 MPa or less, and subjecting the grain oriented electrical steel sheet to magnetic domain refinement after final annealing such that thermal strain is introduced in a linear like manner in a direction intersecting a rolling direction of the steel sheet, with magnetic domain refinement interval D (mm) in the rolling direction, from a side of the steel sheet corresponding to the winding outer peripheral side of a coiled steel sheet at the stage of the final annealing, such that a deflection of the grain oriented electrical steel sheet is 3 mm or less per unit length: 500 mm in the rolling direction of the steel sheet,

公开(公告)号：EP3196320B1

公开(公告)日：2019-08-21

申请号：EP15838971.8

申请日：2015-09-04

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  INOUE, Hirotaka

IPC分类号： C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/28 ,  C22C38/34 ,  C22C38/00 ,  C21D8/12 ,  C21D9/46 ,  C23C8/02 ,  C23C8/26 ,  H01F1/16 ,  C22C38/60 ,  F27B9/04 ,  F27D7/02 ,  F27D7/06 ,  C23F17/00

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：EP2957653A1

公开(公告)日：2015-12-23

申请号：EP14752079.5

申请日：2014-02-18

申请人： JFE Steel Corporation

发明人： MATSUDA, Hiroshi ,  TAKAHASHI, Hideyuki ,  YAMAGUCHI, Hiroi ,  HAYAKAWA, Yasuyuki ,  SHINGAKI, Yukihiro ,  TERASHIMA, Takashi

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

CPC分类号： C21D8/1255 ,  C21D8/12 ,  C21D8/1272 ,  C21D9/0006 ,  C21D9/46 ,  C23C8/02 ,  C23C8/26 ,  C23C8/38 ,  C23C8/80 ,  H01F1/16 ,  H01F41/02 ,  H01J37/32018 ,  H01J37/3277

摘要： Provided is an apparatus for nitriding a grain-oriented electrical steel sheet which is very useful in obtaining excellent magnetic properties with no variation, that enables generating glow discharge between positive electrodes and negative electrodes disposed in a nitriding zone and irradiating the generated plasma to a strip to perform appropriate nitriding.

摘要翻译： 本发明提供了一种用于氮化方向性电磁钢板的装置，其在获得优异的磁性能方面非常有用，无变化，能够在正极和设置在氮化区域中的负极之间产生辉光放电，并将产生的等离子体照射到带材 进行适当的氮化处理。

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

公开(公告)号：EP2940158A1

公开(公告)日：2015-11-04

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 ,  C22C38/00 ,  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.

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，通过对钢坯热轧，而无需再加热或再加热后，得到热轧板，具有含组合物的钢坯，通过 质量％或质量ppm，C：0.08％或以下，Si：2.0％至4.5％和Mn：0.5％以下，与S，Se和o每个限制为小于50ppm，sol.Al限制为小于100 ppm时，和N满足sol.Al/(26.98/14.00的关系ppm的范围）内控制‰¤ñ‰¤80 ppm，且余量为Fe及不可避免的包括杂质; 然后使该热轧板退火和轧制，得到最终板厚的冷轧板; 然后对该冷轧板与50ppm以上和1000ppm或的氮增加氮化处理以下，期间或一次再结晶退火后; 然后向所述冷轧板在退火分离; 和在二次再结晶退火的加热阶段设定的温度范围内的300℃〜800℃的停留时间为5小时以上150小时或更小，以在晶界处，并允许沉淀氮化硅（Si 3 N 4） 氮化硅作为钉扎力为正常晶粒生长显着降低磁特性的变化。

公开(公告)号：EP2902508A1

公开(公告)日：2015-08-05

申请号：EP12885788.5

申请日：2012-09-27

申请人： JFE Steel Corporation

发明人： SENDA, Kunihiro ,  WATANABE, Makoto ,  SHINGAKI, Yukihiro ,  OMURA, Takeshi

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

CPC分类号： H01F1/14775 ,  C21D6/001 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0236 ,  C21D8/0247 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1244 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/60 ,  H01F1/16 ,  H01F1/18 ,  H01F41/02

摘要： In a method for producing a grain-oriented electrical steel sheet by hot rolling a steel slab containing, in terms of mass%, C: 0.001∼0.20%, Si: 1.0∼5.0%, Mn: 0.03∼1.0%, one or two of S and Se: 0.005∼0.040% in total, sol. Al: 0.003∼0.050% and N: 0.0010∼0.020%, subjecting to a cold rolling to a final thickness and to a primary recrystallization annealing, applying an annealing separator composed mainly of MgO and then subjecting to final annealing, a heating rate S 1 at a zone of 500∼600°C in a heating process of the primary recrystallization annealing is not less than 100°C/s and a heating rate S 2 at a zone of 600∼700°C is a range of 30∼(0.5 x S 1 )°C/s and an oxidation potential P H2O /P H2 of an atmosphere at a zone of 500∼700°C is preferably not more than 0.05, whereby secondary recrystallized grains are refined over a full length of a product coil to decrease an iron loss.

摘要翻译： 在通过对含有以质量％计含有C：0.001〜0.20％，Si：1.0〜5.0％，Mn：0.03〜1.0％的钢坯进行热轧而制造方向性电磁钢板的方法中， 的S和Se：合计0.005〜0.040％，溶胶。 Al：0.003〜0.050％，N：0.0010〜0.020％，进行冷轧至最终厚度，进行一次再结晶退火后，使用以MgO为主成分的退火分离剂，然后进行最终退火， 初次再结晶退火的加热过程中的500〜600℃的区域为100℃/秒以上，600〜700℃的区域的加热速度S2为30〜（0.5×S1 ）℃/ s，并且在500〜700℃的区域中的气氛的氧化电位PH 2 O / PH 2优选不大于0.05，由此二次再结晶晶粒在产品卷材的整个长度上被精炼以降低铁损 。

公开(公告)号：EP2602342A1

公开(公告)日：2013-06-12

申请号：EP11814305.6

申请日：2011-08-04

申请人： JFE Steel Corporation

发明人： SHINGAKI, Yukihiro ,  MAKIISHI, Noriko ,  IMAMURA, Takeshi

IPC分类号： C22C38/00 ,  B23K15/00 ,  B23K26/00 ,  C21D8/12 ,  C22C38/04 ,  C22C38/60 ,  H01F1/16

CPC分类号： H01F41/00 ,  C21D8/12 ,  C21D8/1216 ,  C21D8/1272 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C23C2/24 ,  C23C26/00 ,  H01F1/01 ,  H01F1/16

摘要： The present invention proposes measures to decrease noise generated by an iron core of a transformer when grain oriented electrical steel sheets each having realized low iron loss through magnetic domain refinement are stacked to constitute the iron core. Specifically, the present invention proposes a grain oriented electrical steel sheet having the total length of cracks in film on a steel sheet surface, of 20 µm or less per 10000 µm 2 of the film, the steel sheet comprising: a predetermined magnetic domain refinement interval in a rolling direction of the steel sheet, provided in magnetic domain refinement through linear like introduction of thermal strain in a direction intersecting the rolling direction; and deflection of 3 mm or less per unit length: 500 mm in the rolling direction of the steel sheet.

摘要翻译： 本发明提出了当通过磁畴细化实现低铁损的晶粒取向电工钢片堆叠以构成铁芯时降低由变压器的铁芯产生的噪声的措施。 具体地说，本发明提出了一种晶粒取向电工钢板，该钢板在钢板表面上膜的裂纹全长为每10000μm2膜20μm或更小，所述钢板包括：预定的磁畴细化区间 通过在与轧制方向交叉的方向上引入热应变的线状引入而进行磁畴细化的钢板的轧制方向; 每单位长度3mm以下的挠曲：在钢板的轧制方向上为500mm。