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1. 发明授权

US5782998A Grain oriented electrical steel sheet having specular surface 失效
标题翻译：具有镜面的晶粒取向电工钢板
公开(公告)号：US5782998A
公开(公告)日：1998-07-21
申请号：US175430
申请日：1994-01-07
申请人： Yoshiyuki Ushigami , Takeo Nagashima , Shuichi Yamazaki , Hiroyasu Fujii , Yozo Suga , Tadashi Nakayama , Katsuro Kuroki , Yosuke Kurosaki
发明人： Yoshiyuki Ushigami , Takeo Nagashima , Shuichi Yamazaki , Hiroyasu Fujii , Yozo Suga , Tadashi Nakayama , Katsuro Kuroki , Yosuke Kurosaki
IPC分类号： C21D1/72 , C21D8/12
CPC分类号： C21D8/1255 , C21D8/1277 , C21D8/1283 , C21D1/72 , C21D8/1272 , C21D8/1288 , C21D8/1294
摘要： In order to provide a very low iron loss, it is necessary to render the surface of a steel sheet smooth (specular). In the present invention, this is effected in a finish annealing furnace to simultaneously attain a high magnetic flux density and a specular surface. Specifically, after the completion of decarburization annealing, a steel material is pickled to remove an oxide layer present on the surface of the steel sheet, coated with an annealing separator comprising a substance nonreactive or less reactive with SiO.sub.2 and then subjected to finish annealing to provide a grain oriented electrical steel sheet having a specular surface. Magnetic domain division and tension coating of the steel sheet can provide a low iron loss value. In the finish annealing, since no time is required for dehydration, the annealing time can be shortened.
摘要翻译： PCT No.PCT / JP93 / 00136 Sec。 371日期1994年1月7日 102（e）日期1994年1月7日PCT提交1993年2月4日PCT公布。公开号WO93 / 23577 日期1993年11月25日为了提供非常低的铁损，必须使钢板的表面光滑（镜面）。在本发明中，这是在最终退火炉中实现的，以同时获得高的磁通密度和镜面。具体地说，在脱碳退火结束后，将钢材酸洗以除去存在于钢板表面上的氧化物层，涂覆有退火分离体，该退火分离剂包含与SiO 2反应性较差或反应性低的物质，然后进行最终退火，以提供具有镜面的晶粒取向电工钢板。钢板的磁畴分割和张力涂层可以提供低铁损值。在最终退火中，由于脱水不需要时间，可以缩短退火时间。

2. 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。

3. 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.

4. 发明授权

US5415703A Very thin electrical steel strip having low core loss and high magnetic flux density and a process for producing the same 失效
标题翻译：具有低铁损和高磁通密度的非常薄的电工钢带及其制造方法
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。

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

US4623407A Method for producing a grain-oriented electrical steel sheet having a high magnetic flux density 失效
标题翻译：具有高磁通密度的方向性电磁钢板的制造方法
公开(公告)号：US4623407A
公开(公告)日：1986-11-18
申请号：US534293
申请日：1983-09-21
申请人： Yozo Suga , Toyohiko Konno , Tadashi Nakayama
发明人： Yozo Suga , Toyohiko Konno , Tadashi Nakayama
IPC分类号： C22C38/00 , C21D8/12 , C22C38/02 , C22C38/06 , H01F1/16 , H01F1/04
CPC分类号： C21D8/1205 , C22C38/02 , C21D8/1222 , C21D8/1233 , C21D8/1294
摘要： The present invention relates to a method for producing a grain-oriented electrical steel sheet.A feature of the present invention is to set S.ltoreq.0.007%, Mn=0.08.about.0.45%, P=0.015.about.0.45% in a slab. The present inventive idea does away with the conventional concept of using MnS as an inhibitor. The present invention present incomplete secondary recrystallization by the S content, which is decreased to a level as low as possible. In addition, a product having a high magnetic flux density can be successfully produced by adding appropriate amounts of Mn and P. Due to these advantages, a high Si content of a slab, which leads to a watt loss reduction, can also be employed in the present invention. In addition according to the present invention, the temperature of slab heating, which is carried out prior to hot rolling, can be drastically decreased as compared with the prior art. Thus, an outstanding cost reduction can be realized due to the decrease in heat energy and complete prevention of the slag formation.
摘要翻译：本发明涉及一种晶粒取向电工钢板的制造方法。本发明的一个特征是在板坯中设定S

7. 发明授权

US4623406A Method for producing a grain-oriented electrical steel sheet having a high magnetic flux density 失效
标题翻译：具有高磁通密度的方向性电磁钢板的制造方法
公开(公告)号：US4623406A
公开(公告)日：1986-11-18
申请号：US534290
申请日：1983-09-21
申请人： Yozo Suga , Fumio Matsumoto , Tadashi Nakayama
发明人： Yozo Suga , Fumio Matsumoto , Tadashi Nakayama
IPC分类号： H01F1/16 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/06 , H01F1/04
CPC分类号： C22C38/02 , C21D8/1205 , C21D8/1222 , C21D8/1233 , C21D8/1294
摘要： The present invention relates to a method for producing a grain-oriented electrical steel sheet.A feature of the present invention is to set S.ltoreq.0.007%, Mn=0.08.about.0.45%, P=0.015.about.0.45% in a slab. The present inventive idea does away with the conventional concept of using MnS as an inhibitor. The present invention present incomplete secondary recrystallization by the S content, which is decreased to a level as low as possible. In addition, a product having a high magnetic flux density can be successfully produced by adding appropriate amounts of Mn and P. Due to these advantages a high Si content of a slab, which leads to a watt loss reduction, can also be employed in the present invention. Furthermore, the watt loss of a product produced by a low-temperature slob-heating is considerably lower than a product produced by a high-temperature slab-heating.
摘要翻译：本发明涉及一种晶粒取向电工钢板的制造方法。本发明的一个特征是在板坯中设定S

8. 发明授权

US5186762A Process for producing grain-oriented electrical steel sheet having high magnetic flux density 失效
标题翻译：具有高磁通密度的晶粒取向电工钢板的制造方法
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。

9. 发明授权

US4437909A Process for producing a grain-oriented silicon steel sheet or strip having excellent magnetic properties 失效
标题翻译：具有优异的磁特性的晶粒取向硅钢板或带材的制造方法
公开(公告)号：US4437909A
公开(公告)日：1984-03-20
申请号：US381878
申请日：1982-05-25
申请人： Kensuke Mori , Hiromi Matsumoto , Yozo Suga , Tadashi Nakayama , Fumio Matsumoto
发明人： Kensuke Mori , Hiromi Matsumoto , Yozo Suga , Tadashi Nakayama , Fumio Matsumoto
IPC分类号： C22C38/00 , B21B3/02 , C21D8/12 , H01F1/16 , H01F1/04
CPC分类号： B21B3/02 , C21D8/1222
摘要： The present invention relates to a process for producing a grain-oriented silicon steel sheet or strip, wherein the crystals of the steel sheet or strip have an orientation of {110} and, further, the steel is easily magnetized in the rolling direction.Since the slab-heating temperature for a grain-oriented silicon steel is considerably higher than that for low carbon steel grades, coarsening of the crystal grains is likely to occur during heating, and the coarse crystal grains are elongated during hot-rolling in the rolling direction and remain in the hot-rolled steel sheet as portions of the grain-oriented silicon steel strip or sheet, where secondary recrystallization becomes incomplete, or as so-called streaks.It is an object of the present invention to provide a novel hot-rolling technique capable of preventing the generation of streaks and capable of enhancing the magnetic flux density of the final product in terms of the B.sub.8 value even in a case where the tendency of streaks to form is small.The present invention is characterized in that during hot-rolling a silicon steel slap is subjected to at least one pass in which the axial lines of the top working roll and the bottom working roll are non parallel, and as a result of these working rolls being non parallel, the grain-oriented electromagnetic steel sheet or strip has no streaks and has a high magnetic flux density.
摘要翻译：本发明涉及一种晶粒取向硅钢板或带材的制造方法，其中钢板或钢带的晶体取向为{110} <001>，此外，钢在轧制中易于磁化方向。由于晶粒取向硅钢的板坯加热温度显着高于低碳钢，所以在加热时可能会发生晶粒粗大化，轧制时的热轧时的粗晶粒细长并且作为部分晶粒取向硅钢带或片材残留在二次再结晶变得不完全的条件下，或作为所谓的条纹残留在热轧钢板中。本发明的目的是提供一种能够防止产生条纹并且能够根据B8值增强最终产品的磁通密度的新型热轧技术，即使在条纹趋势的情况下形成很小。本发明的特征在于，在热轧期间，对硅钢板进行至少一次通过，其中顶层工作辊和底部工作辊的轴线不平行，并且由于这些工作辊是不平行，晶粒取向的电磁钢板或带材没有条纹并具有高的磁通密度。

10. 发明授权

US4592789A Process for producing a grain-oriented electromagnetic steel sheet or strip 失效
标题翻译：晶粒取向电磁钢板或带材的制造方法
公开(公告)号：US4592789A
公开(公告)日：1986-06-03
申请号：US411001
申请日：1982-08-24
申请人： Yakichiro Kawamo , Yozo Suga , Tadao Nozawa , Tadashi Nakayama
发明人： Yakichiro Kawamo , Yozo Suga , Tadao Nozawa , Tadashi Nakayama
IPC分类号： H01F1/16 , C21D8/12 , H01F1/04
CPC分类号： C21D8/1272
摘要： In conventional processes for producing a grain-oriented electromagnetic steel strip or sheet, the carbon and silicon content of the starting material is such that .alpha.-.gamma. transformation takes place, said transformation formerly being belived to play an important role in, for example, the formation of AlN. Recently, attempts have been made to reduce the carbon content so as to simplify decarburization-annealing, but these attempts have not been successful.In the present invention, (1) an extremely low carbon content (C.ltoreq.0.02%) and an extremely low sulfur content (S.ltoreq.0.015%), as well as a low heating temperature of the starting material, and (2) a temperature gradient of at least 2.degree. C. per centimeter, which is generated parallel to the sheet surface and under which the growth of secondary recrystallized grains is completed, are combined. As a result of such combination, the following advantages are attained: (1) secondary recrystallization is attained without .alpha.-.gamma. transformation taking place; (2) a high magnetic flux density is attained; (3) a continuous-casting machine can be directly combined with a continuous hot-rolling mill; (4) decarburization-annealing can be simplified; and (5) no molten slag is formed during heating of a steel slab.
摘要翻译：在用于制造晶粒取向的电磁钢带或片材的常规方法中，起始材料的碳和硅含量使得发生α-γ转化，所述转变以前被认为在例如形成AlN。近来，已经尝试减少碳含量以简化脱碳退火，但是这些尝试并不成功。在本发明中，（1）极低的碳含量（C <= 0.02％）和极低的硫含量（S <= 0.015％）以及起始材料的低加热温度和（ 2）结合平行于片材表面并在其下完成二次再结晶晶粒的生长的每厘米至少2℃的温度梯度。作为这种组合的结果，可获得以下优点：（1）在没有发生α-γ转化的情况下实现二次再结晶; （2）获得高磁通密度; （3）连铸机可直接与连续式热轧机组合; （4）可以简化脱碳退火; （5）钢板加热时不会形成熔渣。

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