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1. 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。

2. 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

3. 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。

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

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。

6. 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.

7. 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

8. 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.

9. 发明授权

US4938807A 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：US4938807A
公开(公告)日：1990-07-03
申请号：US301637
申请日：1989-01-25
申请人： Nobuyuki Takahashi , Yozo Suga , Katsuro Kuroki
发明人： Nobuyuki Takahashi , Yozo Suga , Katsuro Kuroki
IPC分类号： C21D8/12 , C22C38/02
CPC分类号： C21D8/1255 , C22C38/02
摘要： Disclosed is a process for the preparation of a grain oriented silicon steel about sheet having a high flux density, which comprises hot-rolling a slab comprising 1.5 to 4.8% by weight of Si, 0.012 to 0.050% by weight of Al, 0.0010 to 0.0120% by weight of N, 0.0020 to 0.0150% by weight of Ti, up to 0.45% by weight of Mn and up to 0.012% by weight of at least one member selected S and Se, which satisfies the requirement 0.06 to 0.6 of Ti/N (at % ratio) and Mn/(S+Se).gtoreq.4.0 (weight ratio) with the balance comprising Fe and unavoidable impurities, to cold-rolling, performing decarburization annealing, coating an annealing separator on the steel sheet surface, then performing finish annealing, and performing a nitriding treatment of the steel sheet 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.

10. 发明授权

US4363677A Method for treating an electromagnetic steel sheet and an electromagnetic steel sheet having marks of laser-beam irradiation on its surface 失效
标题翻译：用于处理电磁钢板的方法和在其表面上具有激光束照射标记的电磁钢板
公开(公告)号：US4363677A
公开(公告)日：1982-12-14
申请号：US227379
申请日：1981-01-22
申请人： Tadashi Ichiyama , Shigehiro Yamaguchi , Tohru Iuchi , Motoharu Nakamura , Yozo Suga
发明人： Tadashi Ichiyama , Shigehiro Yamaguchi , Tohru Iuchi , Motoharu Nakamura , Yozo Suga
IPC分类号： C21D1/09 , C21D8/12 , H01F1/147 , H01F1/04
CPC分类号： C21D8/1294 , C21D1/09 , H01F1/14783 , Y10T428/12924
摘要： A process of providing electromagnetic steel strips or sheet with excellent magnetic properties. The process comprises the steps of:irradiating with a laser-beam the surface of an electromagnetic steel sheet which has been finally annealed, thereby locally forming marks of the laser-beam irradiation on the surface of the steel, and;subsequently, subjecting the steel sheet to the formation of an insulating film on the sheet surface at a temperature of the sheet not exceeding 600.degree. C.
摘要翻译：提供具有优异磁性的电磁钢带或片材的方法。该方法包括以下步骤：用激光束照射最终退火的电磁钢板的表面，从而在钢表面上局部地形成激光束照射标记; 随后在不超过600℃的片材的温度下对钢板在片材表面上形成绝缘膜。

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