公开(公告)号：EP2455498A1

公开(公告)日：2012-05-23

申请号：EP10799875.9

申请日：2010-07-15

申请人： Nippon Steel Corporation

发明人： USHIGAMI, Yoshiyuki ,  FUJII, Norikazu

IPC分类号： C21D8/12 ,  B21B3/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/60 ,  C23C8/26 ,  H01F1/16

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，进行精轧。

公开(公告)号：EP2025766A1

公开(公告)日：2009-02-18

申请号：EP07744186.3

申请日：2007-05-22

申请人： Nippon Steel Corporation

发明人： USHIGAMI, Yoshiyuki ,  FUJII, Norikazu ,  KIMURA, Takeshi ,  ISHIBASHI, Maremizu ,  NAKAMURA, Shuichi ,  YAMASAKI, Koji

IPC分类号： C21D9/46 ,  C21D8/12 ,  C22C38/00 ,  C22C38/06 ,  C22C38/60 ,  B21B3/02 ,  H01F1/16

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 1280oC 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： 本发明提供一种生产方向性电磁钢板的方法，其包括使板坯加热温度为1280℃以下，通过（a）将其加热至规定温度为1000〜1150℃的过程来退火热轧板，使 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，使得热轧板退火前后的钢板的碳量差为0.002 至0.02质量％，并且在加热速率为40℃以上，优选为75〜125℃/秒的条件下，在脱碳退火的升温过程中进行加热，同时钢板的温度为 550℃至720℃，并在脱碳退火升温过程中利用感应加热进行快速加热。

公开(公告)号：EP2025767B1

公开(公告)日：2012-05-16

申请号：EP07744360.4

申请日：2007-05-23

申请人： Nippon Steel Corporation

发明人： USHIGAMI, Yoshiyuki ,  FUJII, Norikazu ,  KUMANO, Tomoji

IPC分类号： C21D9/46 ,  C21D8/12 ,  C22C38/00 ,  C22C38/60 ,  C23C8/26 ,  C23C8/62 ,  H01F1/16 ,  H01F41/02

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

摘要： A process for producing a grain-oriented magnetic steel sheet in which slab heating is conducted at a temperature of 1,350°C or lower and the annealing of a hot-rolled sheet is conducted: (a) in a step in which the hot-rolled sheet is heated to a given temperature of 1,000-1,150°C to cause recrystallization and then annealed at a temperature of 850-1,100°C lower than that temperature or (b) by decarburizing the hot-rolled sheet during annealing so that the difference in carbon content between the steel sheet before the annealing and that after the annealing is 0.002-0.02 mass% and the heating in the decarburization/annealing is conducted under such conditions that the heating rate during the period when the temperature of the steel sheet is in the range of 550-720°C is 40 °C/sec or higher, preferably 75-125 °C/sec. Induction heating is used for the rapid heating in the heating step in the decarburization/annealing.

公开(公告)号：EP2039792A1

公开(公告)日：2009-03-25

申请号：EP07743247.4

申请日：2007-05-07

申请人： Nippon Steel Corporation

发明人： USHIGAMI, Yoshiyuki ,  FUJII, Norikazu ,  MURAKAMI, Kenichi ,  MORISHIGE, Nobusato

IPC分类号： C22C38/00 ,  C22C38/02 ,  C22C38/60 ,  H01F1/16

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/60 ,  H01F1/14775 ,  H01F1/16

摘要： Grain-oriented electrical steel sheet superior in core loss characteristic containing Si: 0.8 to 7 mass% and having a secondary recrystallized texture with a {110} orientation as the main orientation, characterized in that average deviation angles α, β, and γ from the {110} ideal orientation of the secondary recrystallized texture satisfy (α 2 +β 2 ) 1/2 ≤γ, where α: average deviation angle from {110} ideal orientation around rolling surface normal direction (ND) of secondary recrystallized texture, β: average deviation angle from {110} ideal orientation around traverse direction (TD) of secondary recrystallized texture, and γ: average deviation angle from {110} ideal orientation around rolling direction (RD) of secondary recrystallized texture.

摘要翻译： 含有Si的磁芯损耗特性优异的晶粒取向电工钢板：0.8〜7质量％，具有{110} <001>取向的二次再结晶织构作为主要取向，其特征在于，平均偏差角度±， 来自{110} <001>的二次再结晶织构的理想取向的³满足（±2 +²2）1/2‰³，其中±：平均偏离角{110} <001>围绕滚动面正常的理想方向 二次再结晶组织的方向（ND）：²：二次再结晶组织的横向方向（TD）周围的{110} <001>理想取向的平均偏离角，以及³：平均偏离角与{110} <001>理想方位 二次再结晶织构的轧制方向（RD）。

公开(公告)号：EP2455497A1

公开(公告)日：2012-05-23

申请号：EP10799829.6

申请日：2010-07-13

申请人： Nippon Steel Corporation

发明人： USHIGAMI, Yoshiyuki ,  FUJII, Norikazu

IPC分类号： C21D8/12 ,  B21B3/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/60 ,  C23C8/26 ,  H01F1/16

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：EP2025767A1

公开(公告)日：2009-02-18

申请号：EP07744360.4

申请日：2007-05-23

申请人： Nippon Steel Corporation

发明人： USHIGAMI, Yoshiyuki ,  FUJII, Norikazu ,  KUMANO, Tomoji

IPC分类号： C21D9/46 ,  C21D8/12 ,  C22C38/00 ,  C22C38/60 ,  C23C8/26 ,  C23C8/62 ,  H01F1/16 ,  H01F41/02

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： 在生产晶粒取向电磁钢板的根本是在不高于1350℃更高的温度下加热，（a）所述热轧板加热至1000℃〜1150℃的预定温度，并再结晶后 在850℃的较低温度下退火的所需时间至1100℃，或（b）在热轧板退火过程脱碳传导脱碳之前和之后以调整碳的量的差至0.002〜 12:02质量％。 在钢板的脱碳退火中使用的升温过程中，加热的温度范围内的550℃在至少40℃/秒的加热速率，优选为75〜传导至720℃125℃/ š利用感应加热对在脱碳退火的升温过程中使用的快速加热。