公开(公告)号：EP3333271A1

公开(公告)日：2018-06-13

申请号：EP16832639.5

申请日：2016-06-27

申请人： JFE Steel Corporation

发明人： NAKAJIMA Hiroaki ,  OKUBO Tomoyuki ,  NAKANISHI Tadashi ,  ODA Yoshihiko

IPC分类号： C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

CPC分类号： C21D8/1222 ,  C21D8/12 ,  C21D8/1216 ,  C21D8/1233 ,  C21D8/1244 ,  C21D8/1266 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16 ,  H01F1/18

摘要： In a method for producing a non-oriented electrical steel sheet comprising a series of steps of hot rolling a slab having a chemical composition comprising C: not more than 0.01 mass%, Si: not more than 6 mass%, Mn: 0.05-3 mass%, P: not more than 0.2 mass%, Al: not more than 2 mass%, N: not more than 0.005 mass%, S: not more than 0.01 mass%, Ga: not more than 0.0005 mass%, and the remainder being Fe and inevitable impurities, pickling without conducting a hot band annealing or after conducting a hot band annealing or a self-annealing, subjecting to a single cold rolling or two or more cold rollings including an intermediate annealing therebetween and a finish annealing, and forming an insulation coating, an average heating rate from 500 to 800 °C in the heating process of the finish annealing is made to not less than 50 °C/s, whereby a non-oriented electrical steel sheet having excellent magnetic properties is obtained even if the hot band annealing is omitted.

公开(公告)号：EP1178123B1

公开(公告)日：2015-08-19

申请号：EP01125301.0

申请日：1997-04-18

申请人： DENSO CORPORATION

发明人： Sugiyama, Satoshi ,  Takenouchi, Syoichi ,  Tanimura, Yoshihiro ,  Takeuchi, Keizo ,  Shimizu, Masaki ,  Ishikawa, Takashi ,  Katayama, Yoshitada ,  Kito, Hidehito ,  Sugisaka, Suehisa

IPC分类号： C21D8/12 ,  C21D7/02 ,  C21D8/00 ,  H01F1/03

CPC分类号： C21D8/1294 ,  C21D7/02 ,  C21D7/06 ,  C21D8/005 ,  C21D8/1216 ,  C21D8/1227 ,  C21D2211/001 ,  C21D2211/008 ,  C21D2221/00 ,  H01F1/0306

公开(公告)号：EP2602342A4

公开(公告)日：2013-12-25

申请号：EP11814305

申请日：2011-08-04

申请人： JFE STEEL CORP

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.

公开(公告)号：EP0803582A2

公开(公告)日：1997-10-29

申请号：EP97106468.8

申请日：1997-04-18

申请人： DENSO CORPORATION

发明人： Sugiyama, Satoshi ,  Takenouchi, Syoichi ,  Tanimura, Yoshihiro ,  Takeuchi, Keizo ,  Shimizu, Masaki ,  Ishikawa, Takashi ,  Katayama, Yoshitada ,  Kito, Hidehito ,  Sugisaka, Suehisa

IPC分类号： C21D8/12

CPC分类号： C21D8/1294 ,  C21D7/02 ,  C21D7/06 ,  C21D8/005 ,  C21D8/1216 ,  C21D8/1227 ,  C21D2211/001 ,  C21D2211/008 ,  C21D2221/00 ,  H01F1/0306

摘要： A method of stress inducing transformation from the austenite phase to the martensite phase by conducting cold working on material of austenite stainless steel in the temperature range from the point Ms to the point Md. The above cold working is a biaxial tensing. An intermediately formed hollow body is made, which includes a ferromagnetic portion and a non-magnetic portion contracting inward. Then, the intermediately formed body is subjected to a stress removing process in which residual tensile stress is removed from an intermediately formed body. In the stress removing process, it is preferable that a punch is press-fitted into the intermediately formed body so as to expand a non-magnetic portion and then the intermediately formed body is drawn with ironing while the punch is inserted so that the residual tensile stress can be changed into the residual compressive stress in the non-magnetic portion.

摘要翻译： 通过在温度范围从点MS到点奥氏体不锈钢的材料进行冷加工从奥氏体相到马氏体相应力诱导转化的方法马里兰州上述冷加工是双轴拉紧。 的中间形成hollowbody制成，其包括铁磁部分和向内收缩的非磁性部。 然后，将中间成形体进行在哪个残余拉伸应力从在中间形成的主体移除的应力 - 除去处理。 在应力去除工序中，优选没有一个冲头压入的中间形成的主体，以便扩大的非磁性部分，然后将中间成形体进行绘制而冲头插入熨烫所以没有残余拉伸 应力可以在非磁性部被改变成的残余压缩应力。

公开(公告)号：EP2826871B1

公开(公告)日：2018-10-17

申请号：EP12871183.5

申请日：2012-03-29

申请人： Baoshan Iron & Steel Co., Ltd.

发明人： ZHANG, Huawei ,  WU, Yaping ,  GONG, Yu ,  SUN, Yezhong ,  HEI, Hongxu

IPC分类号： C21D8/02 ,  B21B37/74 ,  C21D6/00 ,  C21D8/04 ,  C21D9/00 ,  C21D9/70

CPC分类号： H01F1/14766 ,  C21D1/26 ,  C21D6/00 ,  C21D6/008 ,  C21D8/021 ,  C21D8/041 ,  C21D8/1205 ,  C21D8/1216 ,  C21D8/1244 ,  C21D9/0081 ,  C21D9/70 ,  C21D2201/05 ,  C22C38/02 ,  H01F41/00

摘要： A hot rolled silicon steel producing method comprises: silicon steel slab heating process, rough rolling process and finish rolling process. The heating process comprises a pre-heating stage, a heating stage and a soaking stage. The pre-heating stage satisfies the following formula (1). In the formula, VTp is a temperature increasing rate, in the pre-heating stage, whose unit is °C/min; t is a total heating time of the slab in the heating furnace, and t=180-240min; and Tc is an initial temperature when the slab is put into the furnace, whose unit is °C. By using the foregoing formula, the heating process and the rough rolling process are changed, an occurrence rate of edge defects during the production of the hot rolled silicon steel can be reduced, and the hot rolled silicon steel with good surface quality can be produced. V Tp > 220 �¢ min t × 100 �¢ ° �¢ C T C + 200 �¢ ° �¢ C × 25 �¢ ° �¢ C / min

公开(公告)号：EP3118866A4

公开(公告)日：2017-11-22

申请号：EP15762111

申请日：2015-03-13

申请人： HITACHI METALS LTD

发明人： NISHIMURA KAZUNORI ,  MIHARA TOSHIO ,  NOGUCHI SHIN

IPC分类号： H01F1/24 ,  B22F1/00 ,  B22F1/02 ,  B22F3/00 ,  B22F3/24 ,  B22F9/08 ,  C22C38/00 ,  H01F27/255 ,  H01F41/02

CPC分类号： H01F27/255 ,  B22F1/0014 ,  B22F1/02 ,  B22F3/02 ,  B22F3/24 ,  B22F9/082 ,  B22F2003/248 ,  B22F2998/10 ,  B22F2999/00 ,  C21D1/26 ,  C21D6/002 ,  C21D8/1216 ,  C21D9/40 ,  C22C33/0257 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  H01F1/14791 ,  H01F1/20 ,  H01F1/24 ,  H01F1/26 ,  H01F1/33 ,  H01F3/08 ,  H01F41/0246 ,  B22F1/0059 ,  B22F2207/07 ,  B22F5/10 ,  C22C2202/02 ,  B22F1/0096 ,  B22F9/04 ,  B22F2003/023 ,  B22F2009/0824

摘要： A magnetic core includes alloy phases 20 each made of Fe-based soft magnetic alloy grains including M1 (wherein M1 represents both elements of Al and Cr), Si, and R (wherein R represents at least one element selected from the group consisting of Y, Zr, Nb, La, Hf and Ta), and has a structure in which the alloy phases 20 are connected to each other through a grain boundary phase 30. In the grain boundary phase 30, an oxide region is produced. The oxide region includes Fe, M1, Si and R and further includes Al in a larger proportion by mass than the alloy phases 20.

公开(公告)号：EP2812456A1

公开(公告)日：2014-12-17

申请号：EP13709308.4

申请日：2013-01-30

申请人： Salzgitter Flachstahl GmbH

发明人： GEORGEOU, Zacharias ,  REDENIUS, Alexander

IPC分类号： C21D9/46 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C21D8/12

CPC分类号： C21D8/1272 ,  B21B1/46 ,  B21B1/466 ,  B21B15/00 ,  B21B2015/0057 ,  B21B2015/0064 ,  B22D11/0631 ,  C21D8/12 ,  C21D8/1211 ,  C21D8/1216 ,  C21D8/1222 ,  C21D8/1233 ,  C21D2201/05 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  H01F1/14791

摘要： The invention relates to a hot-rolled strip for manufacturing an electric sheet, consisting of the following alloy composition in wt%: C 0.001 to 0.08; Al 4.8 to 20; Si 0.05 to 10; B up to 0.1; Zr up to 0.1; Cr 01. to 4; the iron rest and contaminants caused by smelting.

摘要翻译： 用于制造电工钢板的热轧带材具有以下重量％的合金组成：C：0.001〜0.08Al：4.8〜20Si：0.05〜10B：高达0.1Zr：0.1Cr：0.1〜4，余量 铁和熔融相关杂质。

公开(公告)号：EP2602345A1

公开(公告)日：2013-06-12

申请号：EP11814321.3

申请日：2011-08-05

申请人： JFE Steel Corporation

发明人： INOUE, Hirotaka ,  OMURA, Takeshi ,  YAMAGUCHI, Hiroi ,  OKABE, Seiji

IPC分类号： C22C38/00 ,  C21D8/12 ,  H01F1/16 ,  H01F1/18 ,  C22C38/04 ,  C22C38/60

CPC分类号： H01F41/00 ,  C21D8/1216 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/60 ,  C23C26/00 ,  C23C30/00 ,  H01F1/18 ,  Y10T428/2457 ,  Y10T428/24612

摘要： Disclosed is a grain oriented electrical steel sheet that may reduce iron loss of material with linear grooves formed thereon for magnetic domain refinement and offer excellent low iron loss properties when assembled as an actual transformer, where the steel sheet has sheet thickness of 0.30 mm or less, linear grooves are formed at intervals of 2-10 mm in rolling direction, depth of each of the linear grooves is 10 µm or more, thickness of the forsterite film at bottom portions of the linear grooves is 0.3 µm or more, total tension applied to the steel sheet by the forsterite film and tension coating is 10.0 MPa or higher in rolling direction, and proportion of eddy current loss in iron loss W 17/50 of the steel sheet is 65% or less when alternating magnetic field of 1.7 T and 50 Hz is applied to the steel sheet in the rolling direction.

摘要翻译： 本发明公开了一种晶粒取向电工钢板，其可以减少其上形成有用于磁畴细化的线性凹槽的材料的铁损，并且当组装为实际变压器时提供优异的低铁损特性，其中钢板具有0.30mm或更小的板厚度 在轧制方向上以2〜10mm的间隔形成线状槽，线状槽的深度为10μm以上，线状槽底部的镁橄榄石被膜的厚度为0.3μm以上，施加的总张力 在镁橄榄石被膜和拉伸被膜中，在轧制方向上为10.0MPa以上，在1.7T和50的交变磁场下钢板的铁损W2 / 50中的涡流损失的比例为65％以下 Hz在轧制方向上施加于钢板。

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。

公开(公告)号：EP0803582B1

公开(公告)日：2002-06-19

申请号：EP97106468.8

申请日：1997-04-18

申请人： DENSO CORPORATION

发明人： Sugiyama, Satoshi ,  Takenouchi, Syoichi ,  Tanimura, Yoshihiro ,  Takeuchi, Keizo ,  Shimizu, Masaki ,  Ishikawa, Takashi ,  Katayama, Yoshitada ,  Kito, Hidehito ,  Sugisaka, Suehisa

IPC分类号： C21D8/12

CPC分类号： C21D8/1294 ,  C21D7/02 ,  C21D7/06 ,  C21D8/005 ,  C21D8/1216 ,  C21D8/1227 ,  C21D2211/001 ,  C21D2211/008 ,  C21D2221/00 ,  H01F1/0306