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    • 2. 发明专利
    • Insulating film treatment liquid for grain-oriented electrical steel sheet and method for manufacturing grain-oriented electrical steel sheet
    • 用于面向电工钢板的绝缘膜处理液和用于制造面向导电电工钢板的方法
    • JP2008240080A
    • 2008-10-09
    • JP2007083325
    • 2007-03-28
    • Jfe Steel KkJfeスチール株式会社
    • TAKASHIMA MINORUWATANABE MAKOTOSHIGEKUNI TOMOFUMIMURAKI MINEO
    • C23C22/00C21D8/12C21D9/46
    • C23C22/08C23C22/74
    • PROBLEM TO BE SOLVED: To provide an insulating film treating liquid for a grain-oriented electrical steel sheet which does not contain chromium, and is excellent in film tension, moisture absorption resistance, rust preventiveness, and space factor and method for manufacturing the grain-oriented electrical steel sheet using the treating liquid.
      SOLUTION: The insulating film is formed on the surface of the grain-oriented electrical steel sheet by using the insulating film treating liquid containing colloidal silica at 0.5 to 1.0 mol in terms of SiO
      2 of 1 mol phosphoric acid (PO
      4 ) of the phosphate in one or more selected from phosphates of Mg, Ca, Ba, Sr, Zn, Al, and Mn and containing one or more selected from hypochlorite, chlorite, chlorate, and perchlorate of Ca, Mn, Fe, Mg, Zn, Co, Ni, Cu and Al at 0.005 to 3.0 mol in total with respect to the molar number of the metallic elements.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种不含铬的方向性电磁钢板的绝缘膜处理液,膜张力,耐吸湿性,防锈性和空间因素以及制造方法优异 使用处理液的方向性电磁钢板。 解决方案:通过使用含有胶体二氧化硅的绝缘膜处理液,以SiO 2 SB 1为0.5〜1.0摩尔,形成绝缘膜,该绝缘膜为1 一种或多种选自Mg,Ca,Ba,Sr,Zn,Al和Mn的磷酸盐中的磷酸(PO 4 ),并且含有一种或多种选自次氯酸盐,亚氯酸盐, 相对于金属元素的摩尔数,总计0.005〜3.0摩尔的Ca,Mn,Fe,Mg,Zn,Co,Ni,Cu和Al的氯酸盐和高氯酸盐。 版权所有(C)2009,JPO&INPIT
    • 3. 发明专利
    • Method for coating annealing-separation agent for grain-oriented magnetic steel sheets, and method for manufacturing grain-oriented magnetic steel sheet
    • 用于涂覆用于面向导电磁性钢板的退火分离剂的方法以及制造面向导向的磁性钢板的方法
    • JP2008127635A
    • 2008-06-05
    • JP2006314455
    • 2006-11-21
    • Jfe Steel KkJfeスチール株式会社
    • TODA HIROAKITERAJIMA TAKASHIMURAKI MINEO
    • C21D8/12C21D1/70C22C38/00C22C38/60C23C22/00
    • PROBLEM TO BE SOLVED: To provide a method for newly evaluating magnesia for annealing-separation agent when a grain-oriented magnetic steel sheet is manufactured, and to stably obtain the grain-oriented magnetic steel shhet excellent in not only a film characteristic, but magnetic characteristic, by using the magnesia satisfying the characteristic value evaluated with the above evaluating method.
      SOLUTION: As the magnesia in the annealing-separation agent, a powdery material having impurities with the concentrations 0.01-0.04 mass% Cl, 0.25-0.70 mass% CaO, 0.05-0.15 mass% B, 0.05-0.50 mass% SO
      3 and satisfying 50-90 sec in 40% of CAA(citiric acid activity), and further, 1.5-2.5 mass% of a hydrate quantity at 20°C for 30 min of a hydrate-test, and 3.0-5.0 mass% of the hydrate quantity at 20°C for 180 min of the hydrate-test, is used. The annealing-separation agent which is hydrated so that the hydrate quantity of the magnesia becomes 1.0-3.5 mass% after coating and drying by making the slurry-state to this powdery material with the adjustment of the hydrate temperature and the average hydrate time of the slurry, is coated and dried on the surface of this steel sheet.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种当制造晶粒取向的电磁钢板时,重新评估退火分离剂的氧化镁的方法,并且稳定地获得不仅膜特性优异的晶粒取向磁钢 ,但是磁特性,通过使用满足用上述评价方法评价的特性值的氧化镁。 解决方案:作为退火分离剂中的氧化镁,具有浓度为0.01〜0.04质量%的Cl,0.25〜0.70质量%的CaO,0.05〜0.15质量%的B,0.05〜0.50质量%的SO的杂质的粉末状物质 在30%的水合物试验中,在40%的CAA(柑橘酸活性)中满足50-90秒,并且在20℃下的水合物量为1.5-2.5质量%,30分钟, 使用水合物试验在20℃下水合物量的3.0-5.0质量%180分钟。 水合后的退火分离剂,通过调节水合物的温度和水合物的平均时间,在涂布干燥后使氧化镁的水合物量成为1.0〜3.5质量% 浆料在该钢板的表面上进行涂布和干燥。 版权所有(C)2008,JPO&INPIT
    • 5. 发明专利
    • Method for preparing annealing separating agent slurry and method for producing grain oriented silicon steel sheet
    • 制备退火分离剂浆料的方法和生产面向硅的硅钢板的方法
    • JP2005290445A
    • 2005-10-20
    • JP2004105236
    • 2004-03-31
    • Jfe Steel KkJfeスチール株式会社
    • OKABE SEIJITOGE TETSUOMURAKI MINEO
    • C23C22/00C21D9/46C22C38/00C22C38/60H01F1/16
    • PROBLEM TO BE SOLVED: To provide a method for preparing annealing separating agent slurry capable of stably reducing core loss which is used in a method for producing a grain oriented silicon steel sheet in which a forsterite film is not formed, and to provide a method for producing a grain oriented silicon steel sheet using the annealing separating agent slurry. SOLUTION: Regarding the method for preparing annealing separating agent slurry comprising chloride of 0.1 to 10 pts.mass expressed in terms of chlorine to 100 pts.mass magnesia, in the case, as the chloride, water-soluble chloride is added, a solution obtained by dissolving the water-soluble chloride into water is used; in the case water-insoluble chloride is added, chloride grains in which the cumulative 90% size is ≤20 μm are used; and in the case Sn chloride and/or Sb chloride is added, a chloride solution obtained by charging Sn chloride and/or Sb chloride into water or slurry stirred at a flow velocity of ≥0.2 m/s, and a chloride-dispersed mixed solution are used, so as to prepare the annealing separating agent slurry for a grain oriented silicon steel sheet. COPYRIGHT: (C)2006,JPO&NCIPI
    • 待解决的问题:提供一种制备能够稳定地降低铁损的退火分离剂浆料的方法,该方法用于制备不形成镁橄榄石膜的晶粒取向硅钢板的方法,并提供 使用退火分离剂浆料的晶粒取向硅钢板的制造方法。 解决方案:关于制备包含0.1至10质量ppm的氯化物的退火分离剂浆料的方法,以氯表示至100质量度的氧化镁,在这种情况下,作为氯化物,加入水溶性氯化物, 使用通过将水溶性氯化物溶解在水中得到的溶液; 在加入水不溶性氯化物的情况下,使用累积90%尺寸≤20μm的氯化物粒子; 在添加氯化锡和/或氯化Sb的情况下,将氯化锡和/或氯化Sb中的氯化物和/或氯化钡加入水中或以≥0.2m/ s的流速搅拌的浆料和氯化物分散混合溶液 ,以制备晶粒取向硅钢板的退火分离剂浆料。 版权所有(C)2006,JPO&NCIPI