公开(公告)号：US5858126A

公开(公告)日：1999-01-12

申请号：US792494

申请日：1997-01-31

申请人： Kunihide Takashima ,  Ryutarou Kawamata ,  Yoshio Nakamura ,  Isao Iwanaga ,  Norito Abe

发明人： Kunihide Takashima ,  Ryutarou Kawamata ,  Yoshio Nakamura ,  Isao Iwanaga ,  Norito Abe

IPC分类号： C21D8/12 ,  H01F1/147 ,  H01F1/04

CPC分类号： C21D8/12 ,  H01F1/14775

摘要： Very high magnetic flux density grain-oriented electrical steel slab containing 2.5 to 4.0 weight percent silicon as an essential component and having a very high magnetic flux density B.sub.8 of not less than 1.92 tesla, in which by area not less than 80 percent is accounted for by matrix secondary recrystallization grains having a diameter not larger than 100 mm and not smaller than 10 mm in a direction of cold rolling and not larger than 50 mm and not smaller than 5 mm in a direction perpendicular to the cold rolling direction, and in which, moreover, of the grains in said matrix, not fewer than 50 percent by ratio of number are fine secondary recrystallization grains having an average diameter not larger than 5 mm.

摘要翻译： 非常高的磁通密度晶粒取向电工钢板，含有2.5〜4.0重量％的硅作为必要成分，具有非常高的磁通密度B8，不小于1.92特斯拉，其中不少于80％ 通过在冷轧方向上具有不大于100mm且不小于10mm的直径的矩形二次再结晶晶粒，并且在与冷轧方向垂直的方向上不大于50mm且不小于5mm， 此外，在所述基体中的晶粒中，不少于50％的数量是具有不大于5mm的平均直径的精细二次再结晶晶粒。

公开(公告)号：US6159309A

公开(公告)日：2000-12-12

申请号：US180125

申请日：1998-11-02

申请人： Yousuke Kurosaki ,  Norito Abe ,  Nobuo Tachibana ,  Kentaro Chikuma ,  Kiyokazu Ichimura ,  Sadanobu Hirokami ,  Masayuki Yamashita

发明人： Yousuke Kurosaki ,  Norito Abe ,  Nobuo Tachibana ,  Kentaro Chikuma ,  Kiyokazu Ichimura ,  Sadanobu Hirokami ,  Masayuki Yamashita

IPC分类号： C21D8/12 ,  C22C38/02 ,  C22C38/06 ,  C22C38/60

CPC分类号： C22C38/60 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1261 ,  C22C38/02 ,  C22C38/06 ,  C21D8/1222

摘要： The present invention provides a grain-oriented electrical steel sheet having magnetic properties equal to, or higher than, those of conventional steel sheets can be produced economically with high productivity, and a method for producing such a steel sheet. The producing method comprises the steps of using, as a starting material, a coil obtained by heating a slab having a composition comprising, in terms of percent by weight, 0.02 to 0.15% of C, 2.5 to 4.0% of Si, 0.02 to 0.20% of Mn, 0.015 to 0.065% of Sol. Al, 0.0030 to 0.0150% of N, 0.005 to 0.040% as the sum of at least one of S and Se and the balance substantially consisting of Fe and hot rolling the slab to a coil, or a coil directly cast from a molten steel having the same components as the slab, conducting hot rolled sheet annealing at 900 to 1,100.degree. C., one stage cold rolling the sheet by a tandem mill having a plurality of stands, conducting decarburization annealing, further conducting final finish annealing, and then applying final coating so that a product having a thickness of 0.20 to 0.55 mm, an average grain diameter size of 1.5 to 5.5 mm, a W.sub.17/50 value expressed by the formula given below and a B.sub.8 value satisfying the relation 1.80.ltoreq.B.sub.8 (T).ltoreq.1.88:0.5884e.sup.1.9154t .ltoreq.W17/50 (W/kg).ltoreq.0.7558e.sup.1.7378t [t: sheet thickness.]

摘要翻译： PCT No.PCT / JP98 / 01718 Sec。 371日期：1998年11月2日 102（e）1998年11月2日日期PCT提交1998年4月15日PCT公布。 公开号WO99 /​​ 46416 PCT 日期1999年9月16日本发明提供一种具有等于或高于常规钢板的磁特性的方向性电磁钢板可以以高生产率经济地生产，以及这种钢板的制造方法。 该制造方法包括以下步骤：使用通过加热具有以重量％计含有C 0.02〜0.15％，Si 2.5〜4.0％，0.02〜0.20重量％ Mn％，0.015〜0.065％的Sol。 Al，0.0030〜0.0150％的N，0.005〜0.040％，作为S和Se中的至少一种的总和，余量基本上由Fe组成，并且将板坯热轧成线圈，或者是从具有 与板坯相同的部件，在900〜1100℃下进行热轧板退火，通过具有多个机架的串列式轧机进行一段冷轧，进行脱碳退火，进一步进行最终成品退火，然后施加最终 涂布，使得厚度为0.20〜0.55mm，平均粒径尺寸为1.5〜5.5mm的产品，由下式给出的W17 / 50值和满足关系1.80

公开(公告)号：US5415703A

公开(公告)日：1995-05-16

申请号：US022412

申请日：1993-02-16

申请人： Yoshiyuki Ushigami ,  Norito Abe ,  Sadami Kousaka ,  Tadao Nozawa ,  Osamu Honjo ,  Tadashi Nakayama

发明人： Yoshiyuki Ushigami ,  Norito Abe ,  Sadami Kousaka ,  Tadao Nozawa ,  Osamu Honjo ,  Tadashi Nakayama

IPC分类号： C21D8/12 ,  H01F1/147

CPC分类号： H01F1/14775 ,  C21D8/1233 ,  C21D8/1244

摘要： A very thin electrical steel strip having a thickness not exceeding 150 microns, an average grain diameter not exceeding 1.0 mm, a high degree of {110} grain orientation, a high normalized magnetic flux density as expressed by a B.sub.8 /B.sub.s value which is greater than 0.9, and a low core loss not exceeding 50% of the core loss of any conventional product.It is produced from a starting material consisting of a grain-oriented electrical steel strip containing not more than 8% silicon, the balance thereof substantially being iron, and having a high degree of {110} grain orientation, a normalized magnetic flux density as expressed by a B.sub.8 /B.sub.s value which is greater than 0.9, an average grain diameter of at least 20 mm in the rolling direction and an average grain diameter of at least 40 mm in the direction perpendicular to the rolling direction. The material is cold rolled with a reduction of 60 to 80% to a final thickness not exceeding 150 microns, and the cold rolled material is annealed for primary recrystallization. The use of a starting material further containing 0.005 to 0.30% of one or both of tin and antimony yields a product of still improved properties.

摘要翻译： 厚度不超过150微米，平均粒径不超过1.0毫米，{110} <001>晶粒取向高度的非常薄的电工钢带，由B8 / Bs值表示的高归一化磁通密度 其大于0.9，并且低铁损不超过任何常规产品的铁损的50％。 由含有不超过8％硅的晶粒取向电工钢板，其余基本上为铁，并具有高度{110} <001>晶粒取向的起始材料制成，归一化磁通量 由B8 / Bs值大于0.9表示，在轧制方向的平均粒径至少为20mm，平均粒径在与轧制方向垂直的方向上至少为40mm。 将材料冷轧至60-80％，最终厚度不超过150微米，冷轧材料进行一次再结晶退火。 使用进一步含有0.005〜0.30％的锡和锑中的一种或两种的起始材料得到仍具有改进性能的产品。

公开(公告)号：US5026439A

公开(公告)日：1991-06-25

申请号：US596857

申请日：1990-10-12

申请人： Masaki Tanaka ,  Norito Abe ,  Masao Yabumoto ,  Yoshiyuki Ushigami ,  Tadao Nozawa

发明人： Masaki Tanaka ,  Norito Abe ,  Masao Yabumoto ,  Yoshiyuki Ushigami ,  Tadao Nozawa

IPC分类号： C21D8/12 ,  C21D9/00 ,  C21D9/52

CPC分类号： C21D8/1294 ,  C21D9/52

摘要： The present invention provides a wound core having a low core loss and not susceptible to a disappearance of the core loss lowering effect due to a magnetic domain refining even when stress-relief annealing is conducted after fabrication of a steel strip into a wound core, through a process which comprises, fabricating a very thin silicon steel strip comprising by 6.5% weight or less of silicon with the balance consisting essentially of iron and having a sheet thickness of 100 .mu.m or less and a magnetic flux density (B.sub.8 value) of 1.80T or more into a wound core, subjecting the wound core to stress-relief annealing, unwinding the very thin silicon steel strip from the core, introducing into the very thin silicon steel strip a linear or dotted local strain in a direction at an angle of 45.degree. to 90.degree. to the rolling direction of the thin strip, and rewinding the thin strip onto the core.