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1. 发明授权

US5346559A Process for manufacturing double oriented electrical steel sheet having high magnetic flux density 失效
标题翻译：具有高磁通密度的双重取向电工钢板的制造方法
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。

2. 发明授权

US5261971A Process for preparation of grain-oriented electrical steel sheet having superior magnetic properties 失效
标题翻译：具有优异磁性的方向性电磁钢板的制备方法
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。

3. 发明授权

US5545263A Process for production of grain oriented electrical steel sheet having superior magnetic properties 失效
标题翻译：具有优良磁特性的晶粒取向电工钢板的制造方法
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。

4. 发明授权

US5145533A Process for producing grain-oriented electrical steel sheet having excellent magnetic characteristic 失效
标题翻译：具有优异磁特性的晶粒取向电工钢板的制造方法
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。

5. 发明授权

US5759293A Decarburization-annealed steel strip as an intermediate material for grain-oriented electrical steel strip 失效
标题翻译：脱碳退火钢带作为晶粒取向电工钢带的中间材料
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。

6. 发明授权

US5308411A Ultrahigh silicon, grain-oriented electrical steel sheet and process for producing the same 失效
标题翻译：超高硅，晶粒取向电工钢板及其制造方法
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。

7. 发明授权

US4997493A Process for production of double-oriented electrical steel sheet having high flux density 失效
标题翻译：具有高通量密度的双向电工钢板的制造方法
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.

8. 发明授权

US4994120A Process for production of grain oriented electrical steel sheet having high flux density 失效
标题翻译：具有高通量密度的晶粒取向电工钢板的制造方法
公开(公告)号：US4994120A
公开(公告)日：1991-02-19
申请号：US274432
申请日：1988-11-18
申请人： Nobuyuki Takahashi , Yozo Suga , Katsuro Kuroki , Satoshi Arai
发明人： Nobuyuki Takahashi , Yozo Suga , Katsuro Kuroki , Satoshi Arai
IPC分类号： C21D8/12 , C22C38/02
CPC分类号： C22C38/02 , C21D8/1255
摘要： Disclosed is a process for the preparation of a grain oriented electrical steel sheet having a high flux desnity, which comprises hot-rolling a slab comprising 1.5 to 4.8% by weight of Si, 0.012 to 0.050 by weight of acid-soluble Al, up to 0.012% by weight of at least one member selected from S and Se, 0.0010 to 0.0120% by weight of N, Mn in an amount of up to 0.45% by weight which satisfies the requirement of Mn/(S+Se).gtoreq.4.0 and 0.005 to 0.0080% by weight of B, with the balance comprising Fe and unavoidable impurities, and optionally, further comprising 0.0020 to 0.0120% by weight of Ti, performing cold rolling once or at least twice with intermediate annealing to obtain a final thickness, performing decarburization annealing in a wet hydrogen atomsphere, coating an annealing separator on the steel sheet surface, performing finish annealing for a secondary recrystallization and purification of the steel, and performing a nitriding treatment during the period of from the point of termination of final cold rolling to the point of initiation of secondary recrystallization at the finish annealing step. Furthermore, the above-mentioned slab is heated at a temperature lower than 1200.degree. C. before the hot rolling step, and even in the production of a thin product having a thickness of 0.10 to 0.23 mm, a high flux density can be realized.

9. 发明授权

US06858095B2 Thick grain-oriented electrical steel sheet exhibiting excellent magnetic properties 失效
标题翻译：表现出优异的磁特性的厚晶粒取向电工钢板
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。

10. 发明授权

US5049205A Process for preparing unidirectional silicon steel sheet having high magnetic flux density 失效
标题翻译：制备磁通密度高的单向硅钢片的方法
公开(公告)号：US5049205A
公开(公告)日：1991-09-17
申请号：US589338
申请日：1990-09-27
申请人： Nobuyuki Takahashi , Katsuro Kuroki , Yozo Suga , Kiyoshi Ueno
发明人： Nobuyuki Takahashi , Katsuro Kuroki , Yozo Suga , Kiyoshi Ueno
IPC分类号： C21D3/04 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/06 , H01F1/16
CPC分类号： C21D8/1255 , C22C38/02 , C21D3/04 , C21D8/1233 , C21D8/1283
摘要： The present invention relates to a process for preparing a unidirectional silicon steel sheet having a high magnetic flux density which comprises heating a silicon steel slab comprising by weight 0.025 to 0.075% of carbon, 2.5 to 4.5% of silicon, 0.015% or less of sulfur, 0.010 to 0.050% of acid-soluble aluminum, 0.0010 to 0.012% of nitrogen, 0.050 to 0.45% of manganese and 0.01 to 0.10% of tin and optionally 0.0005 to 0.0080% of boron with the balance being iron and unavoidable impurities, at 1200.degree. C. or below; hot-rolling the slab; subjecting the slab to rolling once or two or more times wherein intermediate annealing is provided, thereby attaining a percentage final rolling of 80% or more; subjecting the resultant steel sheet to decarburizing annealing in a wet hydrogen atmosphere; coating the steel sheet with an annealing separator; conducting finishing annealing for secondary recrystallization and purification of the steel; and subjecting the steel sheet to a nitriding treatment between after the ignition for decarburizing annealing and before the initiation of the secondary recrystallization in the finishing annealing.

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