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1. 发明专利

JP2010013692A Insulating film treatment agent, grain-oriented electrical steel sheet coated with the film treatment agent and insulating film treatment method therefor 有权
标题翻译：绝缘膜处理剂，涂有电镀处理剂和绝缘膜处理方法的面向电镀钢板
公开(公告)号：JP2010013692A
公开(公告)日：2010-01-21
申请号：JP2008174103
申请日：2008-07-03
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKEDA KAZUTOSHI , TAKAHASHI FUMIAKI , YAMAZAKI SHUICHI , FUJII HIROYASU , ANDO FUMIKAZU , NATORI YOSHIAKI
IPC分类号： C23C22/00 , C21D9/46 , H01F1/18
摘要： PROBLEM TO BE SOLVED: To improve the magnetic properties of a grain-oriented electrical steel sheet free from chromic acid by increasing tensile strength of an electrical insulating film of the grain-oriented electrical steel sheet higher than before.
SOLUTION: An insulating film treatment agent contains a phosphate and colloidal silica as principal elements, wherein the ratio of the colloidal silica to 100 pts.wt. of the phosphate is 30 to 70 pts.wt. and in metal components in the phosphate, the content of bivalent metallic elements is 20 to 80 wt.%, the content of trivalent metals is 10 to 70 wt.% and the content of metallic elements having 4 or more valences is 3 to 20 wt.%. The grain-oriented electrical steel sheet has a high tensile strength insulating film with a composition obtained by applying the above treatment liquid onto the surface of the steel sheet and baking the liquid.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过提高比以前更高的方向性电磁钢板的电绝缘膜的抗拉强度，提高不含铬酸的方向性电磁钢板的磁性能。解决方案：绝缘膜处理剂含有磷酸盐和胶体二氧化硅作为主要元素，其中胶体二氧化硅与100重量份的比例的磷酸盐为30〜70重量份在磷酸盐中的金属成分中，二价金属元素的含量为20〜80重量％，3价金属的含量为10〜70重量％，4价以上的金属元素的含量为3〜20重量％％。晶粒取向电工钢板具有高拉伸强度的绝缘膜，其具有通过将上述处理液施加到钢板的表面上并烘烤该液体而得到的组成。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2003268452A METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET WITH ADEQUATE MAGNETIC PROPERTY AND MIRROR PLANE 审中-公开
公开(公告)号：JP2003268452A
公开(公告)日：2003-09-25
申请号：JP2002071427
申请日：2002-03-15
申请人： NIPPON STEEL CORP
发明人： USHIGAMI YOSHIYUKI , FUJII HIROYASU
IPC分类号： C23C22/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a method for stably manufacturing a grain-oriented electromagnetic steel sheet which imparts a low iron loss to the product, by doping elements effective for reducing the iron loss into a steel sheet, in a subsequent steps, particularly in the final annealing step, so as not to affect the orientation control in the secondary recrystallization. SOLUTION: In a process for manufacturing a grain-oriented electromagnetic steel sheet, the method for manufacturing the grain-oriented electromagnetic steel sheet with adequate magnetic properties and a mirror plane is characterized by carrying out decarburization annealing in an atmosphere having such a degree of oxidation as not forming Fe-based oxides, to form an oxide layer mainly consisting of silica on the surface of the steel sheet, and then applying a separation agent for annealing mainly consisting of alumina, and by adding one or several metal powders of Cr, Cu, Mn, and Ni to the separation agent for annealing. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003268451A METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET WITH HIGH MAGNETIC FLUX DENSITY AND MIRROR PLANE 审中-公开
公开(公告)号：JP2003268451A
公开(公告)日：2003-09-25
申请号：JP2002071426
申请日：2002-03-15
申请人： NIPPON STEEL CORP
发明人： USHIGAMI YOSHIYUKI , FUJII HIROYASU
IPC分类号： C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To improve iron loss by enhancing the integration of the crystal orientation in a grain-oriented electromagnetic steel sheet with a mirror plane. SOLUTION: In a process for manufacturing the grain-oriented electromagnetic steel sheet, which cold-rolls a steel strip containing, by mass, 0.8-4.8% Si, 0.003-0.1% C, 0.012-0.05% acid-soluble Al, and N≤0.01%, decarburization anneals it, applies a separation agent for annealing on it, and finishing anneals it, a method for manufacturing the grain-oriented electromagnetic steel sheet with high magnetic flux density and the mirror plane is characterized by carrying out the decarburization annealing in an atmosphere having such a degree of oxidation as not forming Fe-based oxides, to form an oxide layer mainly consisting of silica on a steel sheet surface, and then applying the separation agent for annealing mainly consisting of alumina, and by adding a boron compound to the agent. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2003247024A METHOD OF PRODUCING MIRROR-FINISHED, GRAIN ORIENTED SILICON STEEL SHEET HAVING SATISFACTORY MAGNETIC PROPERTY 审中-公开
公开(公告)号：JP2003247024A
公开(公告)日：2003-09-05
申请号：JP2002047606
申请日：2002-02-25
申请人： NIPPON STEEL CORP
发明人： USHIGAMI YOSHIYUKI , FUJII HIROYASU
IPC分类号： C23C22/00 , C21D9/46 , C22C38/00 , C22C38/06 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To increase the accumulation degrees in crystal orientation by secondary recrystallization, to improve the mirror-finished condition on the surface, and to improve the iron loss of a product, in the production of a mirror-finished grain oriented silicon steel sheet, by controlling additives to a separation agent for annealing. SOLUTION: Decarburizing annealing is performed in an atmospheric gas of an oxidation degree at which Fe based oxides are not formed, and an oxidized layer essentially consisting of silica is formed on the surface of a steel sheet, and, after that, a separation agent for annealing essentially consisting of alumina is applied thereto. One or more than one kind selected from the group consisting of the nitrides of Fe, Mn, Cr and Si are added to the separation agent for annealing. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2003247021A METHOD OF PRODUCING MIRROR-FINISHED, GRAIN ORIENTED SILICON STEEL SHEET HAVING HIGH MAGNETIC FLUX DENSITY 审中-公开
公开(公告)号：JP2003247021A
公开(公告)日：2003-09-05
申请号：JP2002047605
申请日：2002-02-25
申请人： NIPPON STEEL CORP
发明人： USHIGAMI YOSHIYUKI , FUJII HIROYASU
IPC分类号： C23C22/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To increase the accumulation degrees in crystal orientation by secondary recrystallization in the production of a mirror finished, grain oriented silicon steel sheet, and to improve the quality of a product. SOLUTION: A silicon steel strip containing, by mass, 0.8 to 4.8% Si, 0.003 to 0.1% C, 0.012 to 0.05% acid soluble Al and ≤0.01% N is subjected to cold rolling and decarburizing annealing, and, after that, the steel strip is coated with a separation agent for annealing, and is subjected to finish annealing, so that a mirror-finished, grain oriented silicon steel sheet having a high magnetic flux density is produced. In the production method, the decarburizing annealing is performed in an atmosphere having an oxidation degree at which Fe based oxides are not formed to form an oxidized layer essentially consisting of silica on the surface of the steel sheet, and, after that, a separation agent for annealing essentially consisting of alumina is applied thereto. Further, a sulfide is added to the separation agent for annealing. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003041320A Method for manufacturing grain-oriented electromagnetic steel sheet with mirror surface superior in core loss 有权
标题翻译：用于在核心损失中用镜面表面超级制造面向导向的电磁钢板的方法
公开(公告)号：JP2003041320A
公开(公告)日：2003-02-13
申请号：JP2001310357
申请日：2001-10-05
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MURAKAMI KENICHI , FUJII HIROYASU , FUJII NOBUNORI , USHIGAMI YOSHIYUKI , NAKAMURA SHUICHI , YAMAMOTO NORIHIRO
IPC分类号： C21D8/12 , C22C38/00 , C22C38/06 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a means for manufacturing a grain-oriented electromagnetic steel sheet with mirror surface, superior in magnetic properties and surface smoothness, while adequately decarburizing the steel material in a decarburization annealing step. SOLUTION: The method for manufacturing the grain-oriented electromagnetic steel sheet with the mirror surface superior in core loss, comprising cold rolling a hot-rolled silicon steel sheet, which includes, by mass%, 2.0-4.0% Si, 0.01-0.05% acid- soluble Al, 0.01% or less N, 0.3% or less Mn, 0.05% or less S, and the balance substantially Fe with unavoidable impurities, once or more times while sandwiching intermediate annealing, into a final sheet thickness, and employing alumina as a main component in an annealing separating agent between the sheets, when laminating the steel sheets after decarburization annealing, to make the surface to be a mirror plane after finish- annealing, is characterized by separating the decarburization annealing process into the former step and the latter step, and performing the annealing in such oxidation degree (PH2 O/PH2 ) ranges of the former step P1 and the latter step P2, as to satisfy expressions of: 0.05
摘要翻译：要解决的问题：提供一种用于制造具有镜面，磁特性和表面光滑度优异的晶粒取向电磁钢板的方法，同时在脱碳退火步骤中对钢材进行充分脱碳。解决方案：制造具有优异的铁芯损耗的镜面的晶粒取向电磁钢板的制造方法，其特征在于，将热轧硅钢板进行冷轧，所述热轧硅钢板以质量％计含有2.0〜4.0％的Si，0.01-0.05％酸溶性Al，0.01％以下的N，0.3％以下的Mn，0.05％以下的S，余量基本为Fe，不可避免的杂质，一次或多次夹持中间退火，成为最终的板厚，并使用氧化铝作为片材之间的退火分离剂的主要成分，在脱碳退火后层压钢板时，在退火后使表面成为镜面的特征在于，将脱碳退火处理分离成前一工序，后处理，并进行前一步骤P1和后一步骤P2的氧化度（PH2O / PH2）范围的退火，以满足表达式：0.05 <= P1 <= 0.2，P2 <= P1-0.03。

7. 发明专利

JP2002060843A METHOD FOR PRODUCING MIRROR FINISHED GRAIN ORIENTED SILICON STEEL SHEET HAVING HIGH MAGNETIC FLUX DENSITY 失效
公开(公告)号：JP2002060843A
公开(公告)日：2002-02-28
申请号：JP2000241573
申请日：2000-08-09
申请人： NIPPON STEEL CORP
发明人： USHIGAMI YOSHIYUKI , NAKAMURA SHUICHI , YAMAMOTO NORIHIRO , FUJII HIROYASU , MURAKAMI KENICHI
IPC分类号： C21D8/12 , C21D9/46 , C22C38/00 , C22C38/06 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a mirror finished grain oriented silicon steel sheet having higher magnetic flux density by controlling the primarily recrystallized grain structure of a grain oriented silicon steel sheet good in surface smoothness by low temperature slab heating. SOLUTION: In a decarburizing annealing stage, rapid heating is performed to control a primarily recrystallized texture, thereafter, annealing is performed in an atmosphere with a low oxidizing degree, and a separation agent for annealing essentially consisting of alumina is applied. Further, in nitriding treatment, the compositional ratio of an (Al, Si) N inhibitor is controlled.

8. 发明专利

JP2001192738A METHOD FOR PRODUCING GRAIN ORIENTED SILICON STEEL SHEET EXCELLENT IN GLASS FILM CHARACTERISTIC AND MAGNETIC PROPERTY 失效
公开(公告)号：JP2001192738A
公开(公告)日：2001-07-17
申请号：JP2000002864
申请日：2000-01-11
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： FUJII HIROYASU , OKADA SHINGO , TANAKA OSAMU
IPC分类号： H01F1/18 , C21D9/46
摘要： PROBLEM TO BE SOLVED: To produce a grain oriented silicon steel sheet excellent in glass film characteristics and magnetic properties by adding a TiO2 dispersant to the slurry of a separation agent for annealing containing fine particle TiO2. SOLUTION: In the method for producing a grain oriented silicon steel sheet in which the surface of a steel sheet after decarburizing annealing is coated with a separation agent for annealing, and after finish annealing, insulating film treatment is executed, water slurry obtained by adding TiO2 of 0.3 to 10 pts.wt. and one or more kinds among sodium hexameta-phosphate, colloidal silica and sodium silicate of 0.0025 to 1.0 pts.wt. to 100 pts.wt. of MgO is stirred and is thereafter applied on the surface of the steel sheet, and finish annealing is executed. One or more kinds among sodium hexametaphosphate, colloidal silica and sodium silicate are dispersed into water, next, while executing stirring, TiO2 is dispersed, and, after that, MgO is dispersed. TiO2 having a specific surface area of 15 m2/g or more or having the average particle size of 0.15 μm or less or MgO having a particle size of 1 μm or less, and in which the content of water of hydration is 1 to 3% is preferable.

9. 发明专利

JP2000037062A METHOD FOR MANUFACTURING ELECTROMAGNETIC STEEL SHEET FOR LAMINATION ADHESIVE CORE WITH IMPROVED ADHESION STRENGTH STABILITY 失效
公开(公告)号：JP2000037062A
公开(公告)日：2000-02-02
申请号：JP20037598
申请日：1998-07-15
申请人： NIPPON STEEL CORP
发明人： FUJII HIROYASU , TAKEDA KAZUTOSHI , SENOO SEIICHI
IPC分类号： H02K15/12
摘要： PROBLEM TO BE SOLVED: To improve the adhesion property between an insulation covering and a steel plate and to improve and stabilize adhesion strength by heating an electromagnetic steel sheet to a specific temperature before forming the insulation covering with an adhesion operation on the electromagnetic steel sheet and forming an oxide layer on the surface of the steel sheet. SOLUTION: An electromagnetic steel sheet with a plate thickness of 0.5 mm is heat-treated at 225 deg.C in air. Then, a water-emulsion-type coating liquid with a solid content ratio of 20 wt.% with a resin composition where the ratio of acrylic resin, epoxy resin, and phenolic resin is 15:3:3 (wt.%) is applied so that the amount of coating is 8 g/cm2 per side using a roll coater. Then, temperature is heated to 200 deg.C while being pressurized by 10 kgf/cm2, which is retained for 60 seconds, thus improving adhesion strength, reducing the scattering of adhesion strength, and hence obtaining an electromagnetic steel sheet for lamination adhesion core with stable adhesion strength.

10. 发明专利

JPH11335741A MANUFACTURE OF GRAIN ORIENTED SILICON STEEL SHEET HAVING UNIFORM MAGNETIC FLUX DENSITY IN SHEET-WIDTH DIRECTION AND FREE FROM PRIMARY FILM 失效
公开(公告)号：JPH11335741A
公开(公告)日：1999-12-07
申请号：JP13708698
申请日：1998-05-19
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： FUJII HIROYASU , KIMURA TAKESHI , TANAKA OSAMU , USHIGAMI YOSHIYUKI , YAMAZAKI SHUICHI
IPC分类号： C21D9/46
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a grain oriented silicon steel sheet having uniform magnetic flux density in a sheet-width direction and free from primary film. SOLUTION: A decarburized and primary-recrystallized silicon-containing steel sheet for grain oriented silicon steel sheet production, which is regulated to final sheet thickness, is used. A separation agent at annealing, causing no formation of primary film composed essentially of forsterite or capable of inhibiting its formation, is allowed to adhere to the above silicon-containing steel sheet and this steel sheet is then coiled. The resultant coil for finish annealing is heated by directly heating the steel sheet itself. By this method, the magnetic flux density of the finish annealed sheet in a sheet-width direction can be uniformized and reduction in product yield can be prevented.

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