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1. 发明公开

EP3266896A4 GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME 有权
公开(公告)号：EP3266896A4
公开(公告)日：2018-01-10
申请号：EP16759063
申请日：2016-03-04
申请人： JFE STEEL CORP
发明人： IMAMURA TAKESHI , TAKENAKA MASANORI , WAKISAKA YUIKO
IPC分类号： C22C38/00 , C21D6/00 , C21D8/12 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/16 , C22C38/18 , C22C38/60 , H01F1/16
CPC分类号： C21D8/12 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1238 , C21D8/1244 , C21D8/125 , C21D8/1266 , C21D8/1272 , C21D8/1277 , C21D8/1283 , C21D9/46 , C22C38/00 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/16 , C22C38/18 , C22C38/60 , 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

2. 发明公开

EP3321388A4 GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME 有权
公开(公告)号：EP3321388A4
公开(公告)日：2018-05-16
申请号：EP16821424
申请日：2016-07-06
申请人： JFE STEEL CORP
发明人： IMAMURA TAKESHI , TAKENAKA MASANORI
IPC分类号： C22C38/00 , C21D8/12 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/14 , C22C38/60 , H01F1/147 , H01F1/16
CPC分类号： C21D8/12 , C21D8/1222 , C21D8/1233 , C21D8/1255 , C21D8/1261 , C21D8/1266 , C21D8/1272 , C21D8/1283 , C21D9/46 , C22C38/00 , C22C38/001 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/14 , C22C38/60 , H01F1/14775 , H01F1/16
摘要： In the production of a grain-oriented electrical steel sheet by hot rolling a slab containing Si: 2.0-8.0 mass% and no inhibitor-forming ingredients, cold rolling, subjecting to a decarburization annealing, applying an annealing separator composed mainly of MgO and containing a Ti compound(s) and subjecting to a finish annealing, an atmosphere in the heating process of the decarburization annealing is rendered into a dry atmosphere having a dew point of not higher than 0°C and a Ti amount (Ti(a)) and a N amount (N(a)) contained in an iron matrix after the removal of a forsterite coating and a Ti amount (Ti(b)) and a N amount (N(b)) contained in the steel sheet having a forsterite coating are made to satisfy relationships as N(b) ‰¤ 0.0050 mass%, N(b)/N(a) ‰¥ 4, and Ti(b) / Ti(a) ‰¥ 4 to thereby obtain a grain-oriented electrical steel sheet having an excellent coating property as well as excellent iron loss properties after a stress-relief annealing.

3. 发明公开

EP2584054A4 ORIENTED ELECTROMAGNETIC STEEL PLATE PRODUCTION METHOD 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINER ORIENTIERTEN ELEKTROMAGNETISCHEN STAHLPLATTE
公开(公告)号：EP2584054A4
公开(公告)日：2017-06-14
申请号：EP11795427
申请日：2011-06-17
申请人： JFE STEEL CORP
发明人： TAKENAKA MASANORI , TAKASHIMA MINORU , TAKAMIYA TOSHITO
IPC分类号： C21D8/12 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/60 , H01F1/16
CPC分类号： C21D8/0205 , C21D8/12 , C21D8/1216 , C21D8/1244 , C21D2201/05 , C22C38/004 , C22C38/02 , C22C38/06 , C22C38/60 , H01F1/16
摘要： The present invention provides a method for manufacturing a grain oriented electrical steel sheet, including preparing as a material a steel slab having a predetermined composition and carrying out at least two cold rolling operations, characterized in that a thermal treatment is carried out, prior to any one of cold rolling operations other than final cold rolling, at temperature in the range of 500°C to 750°C for a period in the range of 10 minutes to 480 hours. The grain oriented electrical steel sheet of the present invention exhibits through utilization of austenite-ferrite transformation superior magnetic properties after secondary recrystallization.
摘要翻译：本发明提供了一种制造方向性电磁钢板的方法，该方法包括制备具有预定组成并进行至少两次冷轧操作的钢坯作为材料，其特征在于进行热处理，在最终冷轧以外的其中一种冷轧操作中，在500℃至750℃的温度范围内进行10分钟至480小时。本发明的方向性电磁钢板通过利用二次再结晶后的奥氏体 - 铁素体相变优异的磁特性而发挥出来。

4. 发明公开

EP2832865A4 METHOD FOR MANUFACTURING GRAIN ORIENTED ELECTRICAL STEEL SHEET 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINES KORNORIENTIERTEN ELEKTRISCHEN STAHLBLECHS
公开(公告)号：EP2832865A4
公开(公告)日：2015-04-29
申请号：EP13768554
申请日：2013-03-29
申请人： JFE STEEL CORP
发明人： TAKENAKA MASANORI , TAKAMIYA TOSHITO , MATSUDA HIROSHI
IPC分类号： C21D8/12 , B23K15/00 , B23K26/00 , C22C38/00 , C22C38/60 , H01F1/16
CPC分类号： H01F1/14775 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1266 , C21D8/1272 , C21D8/1288 , C21D9/46 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/16 , C22C38/60 , H01F1/16 , H01F41/02
摘要： Provided by the present invention is a method for manufacturing a grain oriented electrical steel sheet using austenite (y) - ferrite (±) transformation which develops excellent magnetic properties, using T ± calculated from the following equation (1) and performing the first pass of rough hot rolling at a temperature of (T ± -100) °C or higher with a rolling reduction of 30 % or more , and further using T ³max calculated from the following equation (2) and performing any one pass of finish hot rolling in a temperature range of (T ³max ±50) °C with a rolling reduction of 40 % or more. T ± °C = 1383.98 - 73.29 % Si + 2426.33 % C + 271.68 % Ni T ³max °C = 1276.47 - 59.24 % Si + 919.22 % C + 149.03 % Ni where [%A] represents content of element "A" in steel (mass%).
摘要翻译：本发明提供一种使用奥氏体（y） - 铁素体（±）转变制造晶粒取向电工钢板的方法，该方法显示出优异的磁特性，使用由下式（1）计算的T± 在（T±-100）℃以上的温度下进行粗轧，轧制压下率为30％以上，进一步使用下式（2）计算出的T 3max，进行精轧热轧温度范围为（T³max±50）℃，压下率为40％以上。 T±C = 1383.98 - 73.29％Si + 2426.33％C + 271.68％Ni T 3最大°C = 1276.47 - 59.24％Si + 919.22％C + 149.03％Ni其中[％A]表示钢中元素“A”的含量（质量％）。

5. 发明公开

EP3309271A4 ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING SAME 有权
公开(公告)号：EP3309271A4
公开(公告)日：2018-07-04
申请号：EP16807130
申请日：2016-06-09
申请人： JFE STEEL CORP
发明人： SHINGAKI YUKIHIRO , HAYAKAWA YASUYUKI , TAKENAKA MASANORI
IPC分类号： C21D8/12 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/40 , C22C38/60 , H01F1/16
CPC分类号： C21D8/1255 , C21D6/008 , C21D8/12 , C21D8/1272 , C21D8/1283 , C21D9/46 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/40 , C22C38/60 , H01F1/14775 , H01F1/16
摘要： The disclosure contains, in mass% or mass ppm: C: 0.005 % or less, Si: 2.0 % to 5.0 %, Mn: 0.01 % to 0.5 %, sol.Al: 10 ppm or less, N: 15 ppm or less, S and Se: each 10 ppm or less, and three or more selected from Sn, Sb, Cr, P, Mo and B whose contents satisfy a relational expression of 0.16 ‰¤ [%Sn] + [%Sb] + [%Cr] + 2 × [%P] + [%Mo] + [%B] ‰¤ 0.50, the balance being Fe and inevitable impurities, where a number of times of repeated bending in a bend test is 10 or more.

6. 发明公开

EP3214188A4 PRODUCTION METHOD FOR ORIENTED GRAIN-ELECTROMAGNETIC STEEL SHEET 有权
标题翻译： HERSTELLUNGSVERFAHRENFÜRKORNORIENTIERTE ELEKTROMAGNETISCHE STAHLBLECHE
公开(公告)号：EP3214188A4
公开(公告)日：2017-09-06
申请号：EP15853850
申请日：2015-10-30
申请人： JFE STEEL CORP
发明人： IMAMURA TAKESHI , HAYAKAWA YASUYUKI , TAKENAKA MASANORI
IPC分类号： C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/60 , H01F1/16
CPC分类号： C21D9/46 , C21D8/12 , C21D8/1222 , C21D8/1233 , C21D8/1255 , C21D8/1272 , C21D8/1283 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/20 , C22C38/34 , C22C38/60 , H01F1/14775 , H01F1/16
摘要： A steel slab having a composition not containing an inhibitor component further contains, in mass%, at least one selected from: Sn: 0.010% to 0.200%; Sb: 0.010% to 0.200%; Mo: 0.010% to 0.150%; and P: 0.010% to 0.150%, and annealing that satisfies a relationship Td ‰¥ Tf is performed, where Td (°C) is a highest temperature at which the steel sheet is annealed in decarburization annealing and Tf (°C) is a highest temperature before secondary recrystallization of the steel sheet starts in final annealing. Thus, a grain-oriented electrical steel sheet with significantly reduced magnetic property scattering in a coil is obtained without using an inhibitor component.
摘要翻译：具有不含抑制剂成分的组成的钢板以质量％计还含有选自以下的至少一种：Sn：0.010〜0.200％; Sb：0.010％至0.200％; Mo：0.010％至0.150％; 和P：0.010％至0.150％，并且执行满足Td≥Tf的关系的退火，其中Td（℃）是在脱碳退火中钢板退火的最高温度，Tf（℃）是钢板二次再结晶前的最高温度开始于最终退火。因此，不使用抑制剂成分，可以得到线圈中的磁特性飞散显着降低的晶粒取向电工钢板。

7. 发明公开

EP2602343A4 DIRECTIONAL MAGNETIC STEEL PLATE 有权
标题翻译： ORIENTIERTE MAGNETISE STAHLPLATTE
公开(公告)号：EP2602343A4
公开(公告)日：2017-05-31
申请号：EP11814306
申请日：2011-08-04
申请人： JFE STEEL CORP
发明人： TAKENAKA MASANORI , TAKASHIMA MINORU , YAMAGUCHI HIROI , OMURA TAKESHI
IPC分类号： C22C38/00 , C21D1/38 , C21D8/12 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/60 , H01F1/16 , H01F1/18
CPC分类号： H01F1/18 , C21D1/38 , C21D8/12 , C21D8/1277 , C21D8/1283 , C21D2201/05 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/08 , Y10T428/24628
摘要： Disclosed is a grain oriented electrical steel sheet having sufficiently low iron loss and having less conventionally-concerned warpage of the steel sheet even after the steel sheet is subjected to artificial magnetic domain refining treatment, where strain-introducing treatment is conducted with high energy so that an iron loss-reducing effect can be maximized. This grain oriented electrical steel sheet is obtained by adjusting tension to be applied to a tension-applying insulating coating, or to both surfaces of the steel sheet by the tension-applying insulating coating, before strain-introducing treatment in the range of Formula (1) below: 1.0 ‰¤ tension applied to non - strain - introduced surface / tension applied to strain - introduced surface ‰¤ 2.0 and by controlling the amount of warpage of the steel sheet toward the strain-introduced surface side after strain-introducing treatment in the range of 1 mm or more and 10 mm or less.
摘要翻译：本发明公开了一种即使在对钢板进行人造磁畴精炼处理之后也具有足够低的铁损并且即使在钢板的常规关心的翘曲的情况下也能够以高能量进行应变引入处理的取向性电磁钢板，可以使铁损降低效果最大化。该取向性电磁钢板是在应变导入处理前的式（1）的范围内，通过调整施加于张力施加绝缘覆膜的张力或通过张力施加绝缘覆膜对钢板的两面施加的张力而得到的。）：1.0‰¤施加于非应变导入面的张力/对应变导入面施加的张力‰¤2.0并且通过控制应变导入处理后钢板向应变导入面侧的翘曲量 1mm以上且10mm以下的范围。

8. 发明公开

EP3050979A4 METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET 有权
标题翻译：生产CORNORIENTED电磁钢板的方法
公开(公告)号：EP3050979A4
公开(公告)日：2016-09-21
申请号：EP14848446
申请日：2014-09-25
申请人： JFE STEEL CORP
发明人： TAKENAKA MASANORI , IMAMURA TAKESHI , HAYAKAWA YASUYUKI , SHINGAKI YUKIHIRO
IPC分类号： C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/60 , H01F1/16
CPC分类号： H01F1/16 , C21D1/34 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C21D9/46 , C21D2201/05 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/60 , C23C8/26
摘要： Provides is a method of producing a grain oriented electrical steel sheet by heating a steel slab having a composition containing by mass% C: 0.0005 % to 0.005 %, Si: 2.0 % to 4.5 %, Mn: 0.005 % to 0.3 %, S and/or Se (in total): 0.05 % or less, sol.Al: 0.010 % to 0.04 %, N: 0.005 % or less, the balance being Fe and incidental impurities, then subjecting the slab to hot rolling to obtain a hot rolled sheet, then optionally subjecting the hot rolled sheet to hot band annealing and subsequent cold rolling once, or twice or more with intermediate annealing performed therebetween to obtain a cold rolled sheet with final sheet thickness, then subjecting the cold rolled sheet to primary recrystallization annealing and subsequent secondary recrystallization annealing, in which the aging index AI of the steel sheet before final cold rolling is set to 70 MPa or less to effectively grow Goss-oriented grains to thereby obtain a grain-oriented electrical steel sheet with good magnetic properties, without the restriction of containing a relatively large amount of C.

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