公开(公告)号：US20090126832A1

公开(公告)日：2009-05-21

申请号：US12227459

申请日：2007-05-23

申请人： Yoshiyuki Ushigami ,  Norikazu Fujii ,  Tomoji Kumano

发明人： Yoshiyuki Ushigami ,  Norikazu Fujii ,  Tomoji Kumano

IPC分类号： C23C8/26 ,  C21D3/04

CPC分类号： C21D8/12 ,  C21D8/1255 ,  C21D8/1261 ,  C21D9/46 ,  C23C8/26 ,  H01F1/14775 ,  H01F1/14791 ,  H01F1/16

摘要： In a production of grain-oriented electrical steel sheet that is heated at a temperature of not higher than 1350° C., (a) the hot-rolled sheet is heated to a prescribed temperature of 1000° C. to 1150° C., and after recrystallization is annealed for a required time at a lower temperature of 850° C. to 1100° C., or (b) in the hot-rolled sheet annealing process decarburization is conducted to adjust the difference in the amount of carbon before and after decarburization to 0.002 to 0.02 mass %. In the temperature elevation process used in the decarburization annealing of the steel sheet, heating is conducted in the temperature range of 550° C. to 720° C. at a heating rate of at least 40° C./s, preferably 75 to 125° C./s, utilizing induction heating for the rapid heating used in the temperature elevation process in decarburization annealing.

摘要翻译： 在不高于1350℃的温度下加热的方向性电磁钢板的制造中，（a）将该热轧板加热到1000℃〜1150℃的规定温度， 再结晶后，在850℃〜1100℃的较低温度下退火所需时间，或（b）在热轧板退火工艺中进行脱碳，调整碳前后的碳量差 脱碳后为0.002〜0.02质量％。 在钢板的脱碳退火中使用的升温处理中，以550℃〜720℃的温度范围进行加热，加热速度为40℃/ s以上，优选为75〜125℃ °C / s，利用感应加热用于脱碳退火中的升温过程中的快速加热。

公开(公告)号：US07364629B2

公开(公告)日：2008-04-29

申请号：US10500994

申请日：2003-01-07

申请人： Yoshiyuki Ushigami ,  Shuichi Nakamura ,  Hiroyasu Fujii ,  Kenichi Murakami

发明人： Yoshiyuki Ushigami ,  Shuichi Nakamura ,  Hiroyasu Fujii ,  Kenichi Murakami

IPC分类号： H01F1/147 ,  H01F1/18

CPC分类号： C21D8/1272 ,  C21D1/76 ,  C21D8/1255 ,  C21D8/1283

摘要： In a method for manufacturing grain-oriented silicon steel with mirror-like surface by applying an aqueous slurry of an annealing separator, magnetic properties are stabilized by controlling the amount of moisture, carried in the annealing separator consisting mainly of alumina after application and drying thereof, to not more than 1.5%, controlling the partial water vapor pressure during finish-annealing and eliminating the variation (instability) in secondary recrystallization caused by the inhibitor reaction at the interface.

摘要翻译： 在通过应用退火分离剂的水性浆料制造具有镜面状的晶粒取向硅钢的方法中，通过控制施加和干燥之后主要由氧化铝组成的退火隔离物中所含的水分的量而使磁性能稳定 ，不超过1.5％，控制最终退火时的部分水蒸汽压力，消除由界面处的抑制剂反应引起的二次再结晶的变化（不稳定性）。

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：US5129965A

公开(公告)日：1992-07-14

申请号：US732076

申请日：1991-07-18

申请人： Hisashi Kobayashi ,  Yoshiyuki Ushigami ,  Hiroyasu Fujii

发明人： Hisashi Kobayashi ,  Yoshiyuki Ushigami ,  Hiroyasu Fujii

IPC分类号： C21D1/76 ,  C21D8/12

CPC分类号： C21D8/1277 ,  C21D1/76 ,  C21D8/1272 ,  C21D8/1288

摘要： A method of producing grain oriented silicon steel sheets each having a low watt loss, at an inexpensive cost and a high operational efficiency, wherein surfaces of each silicon steel sheet are given a mirror surface is disclosed. After completion of a finish annealing, forsterite films on the surface of each grain oriented silicon steel sheet are removed therefrom, and thereafter, the silicon steel sheet is annealed within the temperature range of 1000.degree. C. or higher in an atmosphere composed of a mixture gas comprising 20 to 80% by volume of hydrogen gas and 0 to 80% by volume of an inert gas, whereby surfaces of the silicon steel sheet are given a mirror surface. Subsequently, tensile stress additive films are formed on the surfaces of the silicon steel sheet, and consequently, the resultant silicon steel sheet exhibits a remarkably reduced watt loss.

公开(公告)号：US10208372B2

公开(公告)日：2019-02-19

申请号：US13978925

申请日：2012-01-12

申请人： Fumiaki Takahashi ,  Yoshiyuki Ushigami ,  Kazumi Mizukami ,  Shuichi Nakamura ,  Norikazu Fujii ,  Norihiro Yamamoto ,  Masahide Urago

发明人： Fumiaki Takahashi ,  Yoshiyuki Ushigami ,  Kazumi Mizukami ,  Shuichi Nakamura ,  Norikazu Fujii ,  Norihiro Yamamoto ,  Masahide Urago

IPC分类号： C23C8/02 ,  H01F1/01 ,  C21D8/12 ,  C22C38/00 ,  C22C38/02 ,  H01F1/18 ,  C22C38/04 ,  C22C38/06 ,  C23C28/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/34 ,  C22C38/60 ,  C21D6/00

摘要： A grain-oriented electrical steel sheet being a grain-oriented electrical steel sheet containing Si of 0.8 mass % to 7 mass %, Mn of 0.05 mass % to 1 mass %, B of 0.0005 mass % to 0.0080 mass %, each content of Al, C, N, S, and Se of 0.005 mass % or less, and a balance being composed of Fe and inevitable impurities and having a glass coating film made of composite oxide mainly composed of forsterite on the steel sheet surface, in which when glow discharge optical emission spectrometry (GDS) to the surface of a secondary coating film formed on the surface of the glass coating film under a predetermined condition is performed, a peak, of B, in emission intensity having a peak position in emission intensity different from a peak position, of Mg, in emission intensity is obtained and the peak position, of B, in emission intensity from the steel sheet surface is deeper than the peak position, of Mg, in emission intensity.

公开(公告)号：US20130309525A1

公开(公告)日：2013-11-21

申请号：US13982691

申请日：2012-08-17

申请人： Masahiro Fujikura ,  Yoshiyuki Ushigami ,  Tesshu Murakawa ,  Shinichi Kanao ,  Makoto Atake ,  Takeru Ichie ,  Kojiro Hori ,  Shinichi Matsui

发明人： Masahiro Fujikura ,  Yoshiyuki Ushigami ,  Tesshu Murakawa ,  Shinichi Kanao ,  Makoto Atake ,  Takeru Ichie ,  Kojiro Hori ,  Shinichi Matsui

IPC分类号： H01F1/01 ,  B32B15/01 ,  H01F41/02

CPC分类号： H01F1/04 ,  B32B15/011 ,  C21D8/1233 ,  C21D8/1272 ,  C21D2211/004 ,  C22C1/02 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  H01F1/01 ,  H01F1/16 ,  H01F41/0233 ,  Y10T428/12965

摘要： A value of a parameter Q represented by “Q=([Ti]/48+[V]/51+[Zr]/91+[Nb]/93)/([C]/12)” is not less than 0.9 nor more than 1.1, when contents of Ti, V, Zr, Nb, and C (mass %) are represented as [Ti], [V], [Zr], [Nb], and [C] respectively. A matrix of a metal structure is a ferrite phase, and the metal structure does not contain a non-recrystallized structure. An average grain size of ferrite grains constituting the ferrite phase is not less than 30 μm nor more than 200 μm. A precipitate containing at least one selected from the group consisting of Ti, V, Zr, and Nb exists with a density of 1 particle/μm3 or more in the ferrite grain. An average grain size of the precipitate is not less than 0.002 μm nor more than 0.2 μm.

摘要翻译： 由“Q =（[Ti] / 48 + [V] / 51 + [Zr] / 91 + [Nb] / 93）/（[C] / 12）”表示的参数Q的值不小于0.9 Ti，V，Zr，Nb和C（质量％）的含量分别表示为[Ti]，[V]，[Zr]，[Nb]和[C]时，不超过1.1。 金属结构的基体是铁素体相，金属结构不含非再结晶结构。 构成铁素体相的铁素体晶粒的平均粒径不小于30μm，不大于200μm。 含有选自Ti，V，Zr和Nb中的至少一种的析出物在铁素体晶粒中以1个/ m 3以上的密度存在。 沉淀物的平均粒径不小于0.002μm，不大于0.2μm。

公开(公告)号：US20130000786A1

公开(公告)日：2013-01-03

申请号：US13635172

申请日：2011-03-15

申请人： Kenichi Murakami ,  Chie Hama ,  Kazumi Mizukami ,  Yoshiyuki Ushigami ,  Shuichi Nakamura

发明人： Kenichi Murakami ,  Chie Hama ,  Kazumi Mizukami ,  Yoshiyuki Ushigami ,  Shuichi Nakamura

IPC分类号： C23C8/02 ,  C23C8/26

CPC分类号： C21D8/1222 ,  B21B3/00 ,  B21B3/02 ,  C21D3/04 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/18

摘要： A predetermined steel containing Te: 0.0005 mass % to 0.0050 mass % is heated to 1320° C. or lower to be subjected to hot rolling, and is subjected to annealing, cold rolling, decarburization annealing, and nitridation annealing, and thereby a decarburized nitrided steel sheet is obtained. Further, an annealing separating agent is applied on the surface of the decarburized nitrided steel sheet and finish annealing is performed, and thereby a glass coating film is formed. The N content of the decarburized nitrided steel sheet is set to 0.0150 mass % to 0.0250 mass % and the relationship of 2×[Te]+[N]≦0.0300 mass % is set to be established. Note that [Te] represents the Te content and [N] represents the N content.

摘要翻译： 将含有Te：0.0005质量％至0.0050质量％的预定钢加热至1320℃以下进行热轧，进行退火，冷轧，脱碳退火和氮化退火，由此进行脱碳氮化 得到钢板。 此外，在脱碳氮化钢板的表面上涂布退火分离剂，进行最终退火，形成玻璃涂膜。 将脱碳氮化钢板的N含量设定为0.0150质量％〜0.0250质量％，设定2×[Te] + [N] / nlE; 0.0300质量％的关系。 注意，[Te]表示Te含量，[N]表示N含量。

公开(公告)号：US20120111455A1

公开(公告)日：2012-05-10

申请号：US13261144

申请日：2010-07-15

申请人： Yoshiyuki Ushigami ,  Norikazu Fujii

发明人： Yoshiyuki Ushigami ,  Norikazu Fujii

IPC分类号： C21D8/02 ,  C23C8/80 ,  C23C8/02

CPC分类号： C23C8/26 ,  C21D8/12 ,  C21D8/1255 ,  C21D8/1283 ,  C21D2201/05 ,  C21D2211/004 ,  C22C38/00 ,  C22C38/06 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/16

摘要： A nitriding treatment (Step S6) in which an N content of a decarburization-annealed steel strip is increased is performed between start of a decarburization annealing (Step S4) and occurrence of secondary recrystallization in a finish annealing (Step S5). In hot rolling (Step S1), a silicon steel material is held in a temperature range between 1000° C. and 800° C. for 300 seconds or longer, and then finish rolling is performed.

摘要翻译： 在脱碳退火开始（步骤S4）和最终退火中发生二次再结晶之间进行脱碳退火钢带的N含量增加的氮化处理（步骤S6）（步骤S5）。 在热轧（步骤S1）中，将硅钢材料在1000℃〜800℃的温度范围内保持300秒以上，然后进行精轧。

公开(公告)号：US20120103474A1

公开(公告)日：2012-05-03

申请号：US13381294

申请日：2010-07-13

申请人： Yoshiyuki Ushigami ,  Norikazu Fujii

发明人： Yoshiyuki Ushigami ,  Norikazu Fujii

IPC分类号： C21D8/02 ,  C21D6/00 ,  C23C8/02

CPC分类号： C23C8/26 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1283 ,  C21D2201/05 ,  C21D2211/004 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60 ,  H01F1/16

摘要： A silicon steel material is heated in a predetermined temperature range according to contents of B, N, Mn, S, and Se (step S1), and is subjected to hot rolling (step S2). Further, a finish temperature Tf of finish rolling in the hot rolling is performed in a predetermined temperature range according to the content of B. Through these treatments, a certain amount of BN is made to precipitate compositely on MnS and/or MnSe.

摘要翻译： 根据B，N，Mn，S和Se的含量，在规定的温度范围内加热硅钢材料（步骤S1），进行热轧（步骤S2）。 此外，根据B的含量，在规定的温度范围内进行热轧精轧的精加工温度Tf。通过这些处理，使一定量的BN复合地析出在MnS和/或MnSe上。

公开(公告)号：US20090165895A1

公开(公告)日：2009-07-02

申请号：US12227319

申请日：2007-05-22

申请人： Yoshiyuki Ushigami ,  Norikazu Fujii ,  Takeshi Kimura ,  Maremizu Ishibashi ,  Shuichi Nakamura ,  Koji Yamasaki

发明人： Yoshiyuki Ushigami ,  Norikazu Fujii ,  Takeshi Kimura ,  Maremizu Ishibashi ,  Shuichi Nakamura ,  Koji Yamasaki

IPC分类号： C23C8/26

CPC分类号： B21B3/02 ,  C21D8/1244 ,  C21D8/1255 ,  C21D8/1266 ,  H01F1/14775 ,  H01F1/14791 ,  H01F1/16

摘要： The present invention provides a method of production of grain-oriented electrical steel sheet comprising making a slab heating temperature 1280° C. or less, annealing hot rolled sheet by (a) a process of heating it to a predetermined temperature of 1000 to 1150° C. to cause recrystallization, then annealing by a temperature lower than that of 850 to 1100° C. or by (b) decarburizing in annealing the hot rolled sheet so that a difference in amounts of carbon of the steel sheet before and after annealing the hot rolled sheet becomes 0.002 to 0.02 mass % and performing the heating in the temperature elevation process of the decarburization annealing under conditions of a heating rate of 40° C. or more, preferably 75 to 125° C./s while the temperature of the steel sheet is in a range from 550° C. to 720° C. and utilizing induction heating for rapid heating in the temperature elevation process of decarburization annealing.

摘要翻译： 本发明提供一种制造方向性电磁钢板的方法，其特征在于，包括使板坯加热温度为1280℃以下，（a）将其加热至规定温度为1000〜1150℃的加热方法 C进行再结晶，然后通过低于850℃至1100℃的温度进行退火，或者（b）在热轧板退火时进行脱碳，以使退火前后的钢板的碳量差异 热轧板为0.002〜0.02质量％，在加热率为40℃以上，优选为75〜125℃/℃的条件下，在脱碳退火的升温过程中进行加热，同时， 钢板在550℃至720℃的范围内，并且在脱碳退火的升温过程中利用感应加热进行快速加热。