公开(公告)号：EP2746410B1

公开(公告)日：2016-08-10

申请号：EP12824585.9

申请日：2012-08-15

申请人： JFE Steel Corporation

发明人： WATANABE, Makoto ,  SHINGAKI, Yukihiro ,  TAKAMIYA, Toshito ,  OKUBO, Tomoyuki ,  SENDA, Kunihiro

IPC分类号： C21D8/12 ,  C22C38/00 ,  C22C38/60 ,  C23C22/00 ,  H01F1/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C23C22/33 ,  C23C22/74

CPC分类号： C21D8/1272 ,  C21D8/12 ,  C21D8/1244 ,  C21D8/1283 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/60 ,  C23C22/33 ,  C23C22/74 ,  H01F1/14775 ,  H01F1/16 ,  H01F41/00

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：EP2933348A1

公开(公告)日：2015-10-21

申请号：EP13862090.1

申请日：2013-12-11

申请人： JFE Steel Corporation

发明人： IMAMURA, Takeshi ,  SHINGAKI, Yukihiro ,  SUEHIRO, Ryuichi ,  TAKAMIYA, Toshito

IPC分类号： C22C38/00 ,  C22C38/02 ,  C22C38/60 ,  H01F1/16 ,  C21D8/12

CPC分类号： H01F1/14775 ,  C21D8/12 ,  C21D8/1255 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/16 ,  C22C38/20 ,  C22C38/34 ,  C22C38/40 ,  C22C38/60 ,  H01F1/16 ,  Y02P10/212

摘要： When a steel sheet containing Si: 2-5 mass% after cold rolling is subjected to a primary recrystallization annealing and a finishing annealing for secondary recrystallization to form a grain-oriented electrical steel sheet, the primary recrystallization annealing is performed by rapid heating in the heating process and temperature keeping treatment at a certain temperature in the course of the heating to thereby obtain a grain-oriented electrical steel sheet having plural peaks in a distribution of misorientation angle between crystal orientation of secondary recrystallized grains and Goss orientation, wherein misorientation angle of the second smallest peak among the plural peaks is preferably not less than 5° and a grain size of secondary recrystallized grains is not more than 15 mm.

摘要翻译： 对冷轧后的含有2质量％以上的质量的钢板进行一次再结晶退火和二次再结晶的精加工退火以形成取向电工钢板时，通过快速加热进行一次再结晶退火 在加热过程中在一定温度下进行加热处理和温度保持处理，从而获得具有多个峰的晶粒取向电工钢板，其在二次再结晶晶粒的晶体取向和高斯取向之间的取向角分布中具有多个峰，其中，取向角 多个峰中的第二最小峰优选为5°以上，二次再结晶晶粒的粒径为15mm以下。

公开(公告)号：EP2757165A1

公开(公告)日：2014-07-23

申请号：EP12832398.7

申请日：2012-09-14

申请人： JFE Steel Corporation

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

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

CPC分类号： C21D8/1261 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1266 ,  C21D8/1272 ,  C21D2201/05 ,  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

摘要： In the production of a grain-oriented electrical steel sheet by hot rolling a steel slab comprising C: 0.001∼0.10 mass%, Si:1.0∼5.0 mass%, Mn:0.01∼0.5 mass%, sol. Al: 0.003∼0.050 mass%, N: 0.0010∼0.020 mass%, one or two selected from S and Se: 0.005∼0.040 mass% in total, cold rolling, primary recrystallization annealing, and final annealing, a heating rate S1 between a temperature T1 (°C): 500+2 x (NB - NA) and a temperature T2 (°C): 600 +2 x (NB - NA) in a heating process of the primary recrystallization annealing is set to not less than 80°C/sec, and an average heating rate S2 from the temperature T2 to 750°C is set to 0.1∼0.7 times of S1, whereby a grain-oriented electrical steel sheet having a low iron loss over a full length of a product coil is obtained. In the equations, NA represents N amount (massppm) precipitated after the final cold rolling and NB represents N amount (massppm) precipitated after the primary recrystallization annealing.

摘要翻译： 在通过热轧的钢坯含有C生产的晶粒取向电磁钢板的：0.001¼0.10质量％，Si：1.0¼5.0质量％，Mn：0.01¼0.5质量％以下，sol.Al：0.003 ¼0.050质量％，N：一个之间在总，冷轧，一次再结晶退火0.005¼0.040质量％，最终退火，加热速率S1：0.0010¼0.020质量％，选自S和Se中选择一种或两种 温度T1（℃）：500 + 2×（NB - NA）和温度T2（℃）：（ - NA NB）在一次再结晶退火的加热过程中被设定为不小于80 600 2 X ℃/秒，并且在平均升温速度从S2温度T2到750℃被设定为S1的0.1¼0.7倍，由此具有在产品的全长低铁损的晶粒取向电磁钢板 线圈获得。 在等式中，NA darstellt最终冷轧和一次再结晶退火后析出Nb darstellt氮量（质量ppm）后沉淀的N-量（质量ppm）。

公开(公告)号：EP2746410A1

公开(公告)日：2014-06-25

申请号：EP12824585.9

申请日：2012-08-15

申请人： JFE Steel Corporation

发明人： WATANABE, Makoto ,  SHINGAKI, Yukihiro ,  TAKAMIYA, Toshito ,  OKUBO, Tomoyuki ,  SENDA, Kunihiro

IPC分类号： C21D8/12 ,  C22C38/00 ,  C22C38/60 ,  C23C22/00 ,  H01F1/16

CPC分类号： C21D8/1272 ,  C21D8/12 ,  C21D8/1244 ,  C21D8/1283 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/60 ,  C23C22/33 ,  C23C22/74 ,  H01F1/14775 ,  H01F1/16 ,  H01F41/00

摘要： In a method of producing a grain-oriented electrical steel sheet by hot-rolling a steel slab of a chemical composition containing C: 0.001∼0.10%, Si: 1.0∼5.0%, Mn: 0.01∼1.0%, at least one of S and Se: 0.01∼0.05% in total, sol. Al: 0.003∼0.050%, N: 0.001∼0.020% by mass, subjecting to cold rolling, a primary recrystallization annealing, application of an annealing separator mainly composed of MgO and a finish annealing, a temperature rising rate S 1 between 500∼600°C in the primary recrystallization annealing is made to not less than 100°C/s and a temperature rising rate S2 between 600∼700°C is made to 30°C/s ∼0.6xS1°C/s, while a total content W (mol%) of an element having an ionic radius of 0.6∼1.3 Å and an attracting force between the ion and oxygen of not more than 0.7Å -2 included in the annealing separator to MgO is adjusted to satisfy 0.01S2 - 5.5 ≤ Ln (W) ≤ 0.01 S2 - 4.3 to produce a grain-oriented electrical steel sheet having excellent iron loss properties and coating properties.

摘要翻译： 在通过将含有C：0.001〜0.10％，Si：1.0〜5.0％，Mn：0.01〜1.0％的化学组成的钢板热轧至少制造方向 S和Se之一：0.01〜0.05％，溶胶。 Al：0.003〜0.050％，N：0.001〜0.020质量％，进行冷轧，一次再结晶退火，主要由MgO构成的退火分离装置和最终退火，温度上升率S 1在500〜600 将一次再结晶退火后的℃设定为100℃/秒以上，将600〜700℃之间的升温速度S2设定为30℃/秒×0.6×1S1℃/秒，将总含量W（ 离子半径为0.6-1.3的元素和退火分离器中包含的离子和氧之间的吸附力不大于0.7 -2（以摩尔％计）调整为满足0.01S2 - 5.5‰¤ Ln（W）‰¤0.01 S2 - 4.3生产出具有优异的铁损性能和涂层性能的晶粒取向电工钢板。

公开(公告)号：EP2460902A1

公开(公告)日：2012-06-06

申请号：EP10804595.6

申请日：2010-07-30

申请人： JFE Steel Corporation

发明人： IMAMURA, Takeshi ,  SHINGAKI, Yukihiro ,  MURAKI, Mineo

IPC分类号： C22C38/00 ,  B21B3/02 ,  C22C38/14 ,  C22C38/60 ,  H01F1/16 ,  C21D8/12 ,  C21D9/46

CPC分类号： C22C38/02 ,  C21D8/12 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/20 ,  C22C38/34 ,  H01F1/16

摘要： An electrical steel sheet is provided that contains, as components, by mass%, 0.005% or less of C, 1.0% to 8.0% of Si, and 0.005% to 1.0% of Mn; one or more selected from Nb, Ta, V, and Zr such that a total content thereof is 10 to 50 ppm; and the balance being Fe and unavoidable impurities, wherein at least 10% of the content of Nb, Ta, V, and Zr is in the form of precipitates; the precipitates have an average diameter (equivalent circle diameter) of 0.02 to 3 µm; and secondary recrystallized grains of the steel sheet have an average grain size of 5 mm or more. Thus, an electrical steel sheet is provided in which degradation of magnetic characteristics can be reduced in the case of the sheet being sheared, even when the sheet is used for a large transformer having a size of several meters.

摘要翻译： 提供了以质量％计含有C：0.005％以下，Si：1.0〜8.0％，Mn：0.005〜1.0％的电工钢板。 选自Nb，Ta，V和Zr中的一种或多种，​​使得其总含量为10〜50ppm; 其余为Fe和不可避免的杂质，其中Nb，Ta，V和Zr的含量的至少10％为沉淀物; 沉淀物的平均直径（当量圆直径）为0.02〜3μm; 钢板的二次再结晶晶粒的平均粒径为5mm以上。 因此，即使将片材用于尺寸为几米的大型变压器，也可以在片材被剪切的情况下，提供降低磁特性的电磁钢板。