公开(公告)号：US5145533A

公开(公告)日：1992-09-08

申请号：US769586

申请日：1991-10-02

申请人： Yasunari Yoshitomi ,  Yozo Suga ,  Nobuyuki Takahashi ,  Yoshiyuki Ushigami ,  Tadashi Nakayama

发明人： Yasunari Yoshitomi ,  Yozo Suga ,  Nobuyuki Takahashi ,  Yoshiyuki Ushigami ,  Tadashi Nakayama

IPC分类号： C21D8/12 ,  C21D11/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  H01F1/16

CPC分类号： C21D8/1255 ,  C21D11/00 ,  C21D8/1283

摘要： A process for producing a grain-oriented electrical steel sheet having an excellent magnetic characteristic, comprising the steps of: heating to a temperature lower than 1280.degree. C. a steel slab comprising 0.025 to 0.075 wt % C, 2.5 to 4.5 wt % Si, 0.010 to 0.060 wt % acid-soluble Al, 0.0030 to 0.0130 wt % N, 0.014 wt % or less (S+0.405 Se), 0.05 to 0.8 wt % Mn, and the balance consisting of Fe and unavoidable impurities; hot-rolling the thus heated slab to form a hot-rolled strip; cold-rolling the hot-rolled strip to form a cold-rolled strip; decarburization-annealing the cold-rolled strip; applying an annealing separator on the strip; final-annealing the strip; measuring a primary-recrystallized grain size in the stage after completion of a primary recrystallization during the decarburization annealing and before completion of a secondary recrystallization during the final annealing; and controlling in that stage the subsequent grain growth of primary-recrystallized grains by an absorption of nitrogen into the steel strip in accordance with the measured grain size.

摘要翻译： 一种具有优异磁特性的晶粒取向电工钢板的制造方法，包括以下步骤：加热至低于1280℃的钢坯，其包含0.025〜0.075重量％的C，2.5〜4.5重量％的Si， 0.010〜0.060重量％的酸溶性Al，0.0030〜0.0130重量％的N，0.014重量％以下（S + 0.405 Se），0.05〜0.8重量％的Mn，余量由Fe和不可避免的杂质构成。 热轧如此加热的板坯以形成热轧带材; 冷轧热轧钢带以形成冷轧带材; 对冷轧带材进行脱碳退火; 在带上施加退火分离器; 对带进行最终退火; 在脱碳退火期间完成一次再结晶之后的阶段和在最终退火期间二次再结晶完成之前的阶段中测量一次再结晶的晶粒尺寸; 并且在该阶段通过根据测量的晶粒尺寸将氮吸收到钢带中来控制一次再结晶晶粒随后的晶粒生长。

公开(公告)号：US5759293A

公开(公告)日：1998-06-02

申请号：US554531

申请日：1995-11-06

申请人： Nobuyuki Takahashi ,  Yasunari Yoshitomi ,  Tadashi Nakayama ,  Yoshiyuki Ushigami

发明人： Nobuyuki Takahashi ,  Yasunari Yoshitomi ,  Tadashi Nakayama ,  Yoshiyuki Ushigami

IPC分类号： C21D3/04 ,  C21D8/12 ,  H01F1/04

CPC分类号： C21D8/1255 ,  C21D3/04 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1272

摘要： A decarburization-annealed steel strip as an intermediate material for grain-oriented electrical steel strip having good secondary recrystallization and excellent electrical properties is provided by causing a steel strip to possess a micro-structure in which the primary recrystallization grains have an average diameter d of not less than 15 .mu.m and a coefficient of diameter deviation .sigma.* of not more than 0.6.

摘要翻译： 通过使钢带具有其中一次再结晶晶粒具有平均直径+ E的微观结构，提供具有良好的二次再结晶和优异的电特性的用于取向电工钢带的中间材料的脱碳退火钢带 ，ovs d + EE不小于15μm，直径偏差系数σ*不大于0.6。

公开(公告)号：US5346559A

公开(公告)日：1994-09-13

申请号：US34615

申请日：1993-03-19

申请人： Yoshiyuki Ushigami ,  Satoshi Arai ,  Yozo Suga ,  Yasunari Yoshitomi ,  Nobuyuki Takahashi ,  Takehide Senuma

发明人： Yoshiyuki Ushigami ,  Satoshi Arai ,  Yozo Suga ,  Yasunari Yoshitomi ,  Nobuyuki Takahashi ,  Takehide Senuma

IPC分类号： C21D8/12

CPC分类号： C21D8/1233 ,  C21D8/1277

摘要： The present invention provides a process for manufacturing a double oriented electrical steel sheet having a high flux density by suppressing the growth of the secondary recrystallization of {110} oriented grains from the surface of the steel sheet in the hot-rolling stage or cold-rolling stage, which process comprises subjecting a hot rolled sheet comprised of 0.8-6.7% by weight of Si, 0.008-0.048% by weight of acid soluble Al, 0.010% by weight or less of N, and the balance being Fe and unavoidable impurities to a cold-rolling at a reduction rate of 40-80%, and then subjecting the resulting sheet to another cold-rolling in the direction vertical to the above cold-rolled direction at the reduction rate of 30-70% in the final thickness, followed by the steps of annealing for the primary recrystallization, applying an annealing separator, and applying finishing annealing for the secondary recrystallization and purification of steel, wherein the rolling in the finishing hot-rolling stage is carried out at the accumulated reduction rate of 20% or more under the condition that the friction coefficient between the rolls and the steel sheet is not more than 0.25; and wherein the accumulated reduction rate in the last three passes in the hot-rolling is not more than 80%; and further, wherein material of more than 1/10 of the total thickness is removed from both surfaces of the hot-rolled sheet; or wherein the cold-rolling is carried out using a work roll having a diameter of not less than 150 mm.

摘要翻译： 本发明提供了一种制造具有高磁通密度的双重取向电工钢板的方法，该方法通过抑制热轧阶段中钢板表面的{110} 取向晶粒的二次再结晶生长，或 冷轧阶段，该方法包括将由0.8-6.7重量％的Si，0.008-0.048重量％的酸溶性Al，0.010重量％或更少的N组成的热轧板，其余为Fe和 不可避免的杂质以40-80％的还原率进行冷轧，然后在30-70％的还原率下将所得片材沿垂直于上述冷轧方向的方向进行另一次冷轧 最终厚度，然后进行一次再结晶退火的步骤，施加退火分离剂，并对钢的二次再结晶和精炼进行精加工退火，其中精轧热轧中的轧制 在辊和钢板之间的摩擦系数不大于0.25的条件下，以20％以上的累积压下率进行阶段化; 并且其中热轧中最后三道次的累积压下率不大于80％; 并且进一步地，其中从所述热轧板的两个表面去除总厚度的1/10以上的材料; 或者使用直径不小于150mm的工作辊进行冷轧。

公开(公告)号：US5186762A

公开(公告)日：1993-02-16

申请号：US770775

申请日：1991-10-04

申请人： Yoshiyuki Ushigami ,  Tadashi Nakayama ,  Nobuyuki Takahashi

发明人： Yoshiyuki Ushigami ,  Tadashi Nakayama ,  Nobuyuki Takahashi

IPC分类号： C21D8/12

CPC分类号： C21D8/1255 ,  C21D8/1272

摘要： A process for producing a grain-oriented electrical steel sheet having a high magnetic flux density, comprising the steps of: heating a steel slab comprising 1.8 to 4.8 wt % Si, 0.012 to 0.050 wt % acid-soluble A1, 0.010 wt % or less N, and the balance consisting of Fe and unavoidable impurities, to a temperature for hot rolling; hot-rolling the heated slab to form a hot-rolled strip; cold-rolling the hot-rolled strip to a final product sheet thickness at a final cold rolling reduction of 80% or more by a single step of cold rolling or by two or more steps of cold rolling with an intermediate annealing step inserted therebetween; primary-recrystallization-annealing the cold-rolled strip; final-annealing the primary-recrystallization-annealed strip so that secondary-recrystallized grains substantially completely grow up in a temperature region of from 1000.degree. to 1100.degree. C. and then purification is effected above 1100.degree. C.; and subjecting the primary-recrystallization-annealed steel strip to a nitriding treatment before a secondary recrystallization occurs during the final annealing.

摘要翻译： 一种具有高磁通密度的方向性电磁钢板的制造方法，其特征在于，包括以下工序：将含有1.8〜4.8重量％的Si，0.012〜0.050重量％的酸溶性Al，0.010重量％以下的钢坯 N，余量由Fe和不可避免的杂质构成，成为热轧温度; 热轧板坯以形成热轧带材; 通过冷轧的一个步骤或冷轧两个或更多个步骤，在其间插入中间退火步骤，将热轧带材冷轧至最终产品板厚度，最终冷轧压下率为80％以上; 一次再结晶退火冷轧带材; 对一次再结晶退火的带材进行最终退火，使得二次再结晶晶粒在1000℃至1100℃的温度范围内基本上完全生长，然后在1100℃以上进行纯化。 并且在最终退火期间发生二次再结晶之前对一次再结晶退火的钢带进行氮化处理。

公开(公告)号：US4997493A

公开(公告)日：1991-03-05

申请号：US276856

申请日：1988-11-28

申请人： Yoshiyuki Ushigami ,  Yozo Suga ,  Tadashi Nakayama ,  Nobuyuki Takahashi

发明人： Yoshiyuki Ushigami ,  Yozo Suga ,  Tadashi Nakayama ,  Nobuyuki Takahashi

IPC分类号： C21D8/12

CPC分类号： C21D8/1233 ,  C21D8/1255 ,  C21D8/1272

摘要： In the conventional process for the production of a double-oriented electrical steel sheet, the preparation steps are complicated and the manufacturing cost is very high. Nevertheless, the magnetization characteristic B.sub.10 is lower than 1.85 Tesla and the final sheet thickness cannot be reduced below 0.30 mm. According to the present invention, by strictly controlling the secondary recrystallization temperature and performing a third cold rolling in the same direction as the rolling direction of the first cold rolling, the magnetization characteristic B.sub.10 can be increased above 1.88 Tesla and the final sheet thickness can be reduced to 0.20 mm. Moreover, a double-oriented electrical steel sheet having an excellent shape (flatness) and a much smaller thickness deviation in the longitudinal direction of the product can be produced on an industrial scale. Therefore, this product can be effectively used as a core material of a large-size rotary machine or in a small-size static magneto-electronic device.

公开(公告)号：US06858095B2

公开(公告)日：2005-02-22

申请号：US09783408

申请日：2001-02-14

申请人： Yasunari Yoshitomi ,  Hiroaki Masui ,  Nobuyuki Takahashi

发明人： Yasunari Yoshitomi ,  Hiroaki Masui ,  Nobuyuki Takahashi

IPC分类号： C21D8/12 ,  H01F1/147 ,  C11D8/00

CPC分类号： H01F1/14775 ,  C21D8/1244 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1272

摘要： A grain-oriented electrical steel sheet comprising 2.5-4.5% Si by weight and measuring 0.36-1.00 mm in thickness is imparted with a good core loss value for its thickness by controlling its C content, flux density, grain boundary configuration, and deviation degree of crystal orientation in the grains.

摘要翻译： 通过控制其C含量，通量密度，晶界构型和偏差度，将2.5-4.5重量％的Si和厚度为0.36-1.00毫米的晶粒取向电工钢片的厚度赋予其较好的铁损值 晶粒取向晶体。

公开(公告)号：US5261971A

公开(公告)日：1993-11-16

申请号：US869857

申请日：1992-04-16

申请人： Yasunari Yoshitomi ,  Takehide Senuma ,  Yozo Suga ,  Nobuyuki Takahashi

发明人： Yasunari Yoshitomi ,  Takehide Senuma ,  Yozo Suga ,  Nobuyuki Takahashi

IPC分类号： C21D8/12

CPC分类号： C21D8/1222 ,  C21D8/1233

摘要： A silicon steel slab comprising 0.05 to 0.8% by weight of Mn and up to 0.014% by weight of S+0.405Se is heated at a temperature lower than 1280.degree. C. and hot-rolled under such conditions that the hot rolling-finish temperature is 700.degree. to 1150.degree. C., the cumulative reduction ratio at the final three passes is at least 40%, and the reduction ratio at the final pass is at least 20%, or this silicon steel slab is hot-rolled at a hot rolling-finish temperature of 750.degree. to 1150.degree. C. while adopting the above-mentioned reduction ratio according to need, is maintained at a temperature not lower than 700.degree. C. for at least 1 second, and wound at a winding temperature lower than 700.degree. C. The hot-rolled sheet is subjected to the hot-rolled sheet annealing, finally cold-rolled at a reduction ratio of at least 80%, subjected to the decarburization annealing, and then subjected to the final finish annealing. According to this process, a grain-oriented electrical steel sheet having superior magnetic properties is obtained.

摘要翻译： 包含0.05〜0.8重量％的Mn和至多0.014重量％的S + 0.405Se的硅钢板在低于1280℃的温度下加热，并在热轧终轧温度 为700〜1150℃，最后三道次的累积减速比为40％以上，最后通过时的减速比为20％以上，或将该硅钢板热轧 轧制精加工温度为750〜1150℃，同时根据需要采用上述的还原率，在不低于700℃的温度下保持至少1秒钟，并以低于 700℃。对热轧板进行热轧板退火，最后以至少80％的压下率冷轧进行脱碳退火，然后进行最终成品退火。 根据该方法，得到磁特性优异的晶粒取向电工钢板。

公开(公告)号：US5308411A

公开(公告)日：1994-05-03

申请号：US835982

申请日：1992-02-20

申请人： Yozo Suga ,  Yoshiyuki Ushigami ,  Hodaka Honma ,  Nobuyuki Takahashi

发明人： Yozo Suga ,  Yoshiyuki Ushigami ,  Hodaka Honma ,  Nobuyuki Takahashi

IPC分类号： C22C38/02 ,  H01F1/04

CPC分类号： C22C38/02

摘要： An ultrahigh silicon, grain-oriented electrical steel sheet having a magnetic flux density, B.sub.8, of 1.57 or more and a degree of azimuth orientation, R (B.sub.8 /B.sub.s) of 0.87 or more is provided by cold-rolling an ultrahigh silicon steel sheet comprising by weight 0.005 to 0.023% of C, 5 to 7.1% of Si, 0.014% or less of S, 0.013 to 0.055% of acid soluble Al and 0.0095% or less of total N with the balance consisting of Fe and unavoidable impurities at a temperature in the range of from 120.degree. to 380.degree. C. optionally after annealing at a temperature in the range of from 800.degree. to 1100.degree. C., subjecting the cold-rolled sheet to decarburization annealing, coating the annealed sheet with an annealing separator, coiling the coated sheet to prepare a strip coil and subjecting the strip coil to high-temperature finish annealing for secondary recrystallization, the steel sheet being subjected to nitriding during a period from the decarburization annealing to the initiation of secondary recrystallization in the step of high-temperature finish annealing, to increase the nitrogen content.

摘要翻译： PCT No.PCT / JP91 / 00829 Sec。 371日期1992年2月20日 102（e）日期1992年2月20日PCT提交1991年6月20日PCT公布。 出版物WO91 / 19825 日期为1991年12月26日。具有磁通密度B8为1.57以上且方位取向度R（B8 / Bs）为0.87以上的超高硅晶粒取向电工钢板由冷 卷取超高硅钢板，其重量为0.005〜0.023％C，5〜7.1％Si，0.014％以下S，0.013〜0.055％酸溶性Al和0.0095％以下的总N，余量 在120〜380℃的温度范围内由Fe和不可避免的杂质构成，任选在800〜1100℃的温度退火后，对冷轧板进行脱碳退火， 用退火分离机对退火后的板进行涂布，卷取被覆板，制备带状卷材，对带状卷材进行二次再结晶的高温成品退火，在脱碳退火至起始期间，钢板进行氮化 的秒 在高温退火的步骤中进行重结晶，提高氮含量。

公开(公告)号：US5545263A

公开(公告)日：1996-08-13

申请号：US246918

申请日：1994-05-20

申请人： Yasunari Yoshitomi ,  Takehide Senuma ,  Yozo Suga ,  Nobuyuki Takahashi

发明人： Yasunari Yoshitomi ,  Takehide Senuma ,  Yozo Suga ,  Nobuyuki Takahashi

IPC分类号： C21D8/12

CPC分类号： C21D8/1222

摘要： In the present invention, a slab of a silicon steel comprising usual components is hot-rolled while adjusting the hot rolling-finish temperature at 750.degree. to 1150.degree. C. and the cumulative reduction ratio of final three passes to at least 40%, or the above-mentioned silicon steel slab is hot-rolled at the above-mentioned hot rolling-finish temperature, the hot-rolled steel sheet is held at a temperature not lower than 35.degree. C. lower than the finish temperature for at least 1 second, and the steel sheet is wound at a winding temperature lower than 700.degree. C. Successively, the hot-rolled steel sheet is subjected, without annealing of the hot-rolled steel sheet, to cold rolling at a reduction ratio of at least 80%, decarburization annealing, and final finish annealing. According to this process, a grain oriented electrical steel sheet having superior magnetic properties can be prepared.

摘要翻译： 在本发明中，将通常成分的硅钢板坯进行热轧，同时将热轧终轧温度调节至750〜1150℃，最终三次的累积压下率至少为40％，或 将上述硅钢板在上述热轧精加工温度下进行热轧，将该热轧钢板保持在不低于最终温度35℃以下的温度下保持至少1秒钟 ，并且在低于700℃的卷取温度下卷绕该钢板。接着，将热轧钢板在不进行热轧钢板的退火的情况下以至少80％的压下率进行冷轧， ，脱碳退火和最终成品退火。 根据该方法，可以制备具有优异磁性的晶粒取向电工钢板。

公开(公告)号：US09412198B2

公开(公告)日：2016-08-09

申请号：US13144702

申请日：2009-09-10

申请人： Akira Miyata ,  Nobuyuki Takahashi ,  Toshihiro Azuma

发明人： Akira Miyata ,  Nobuyuki Takahashi ,  Toshihiro Azuma

IPC分类号： G06F7/60 ,  G06F17/10 ,  G06T17/00 ,  B25J9/16 ,  G05B19/4061 ,  G06F17/50

摘要： A collision determination device includes a target cell designation unit that designates a target cell for a voxel model which represents the shape of a first object. A determination test point generation unit generates determination test points for the target cell. A spatial curve creation unit creates a spatial curve as the trajectory curve of a determination test point. A curve intersecting determination unit determines whether or not each boundary element of a boundary representation model representing the shape of a second object is intersecting the spatial curve. A distance computation unit computes the closest distance from the spatial curve to the boundary surface of the boundary representation model. A collision determination unit determines, based on the determination result and the computation result, whether there is a possibility of collision between both objects.