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    • 1. 发明专利
    • 方向性電磁鋼板およびその製造方法
    • 面向电磁钢板及其生产方法
    • JP2014196559A
    • 2014-10-16
    • JP2014044312
    • 2014-03-06
    • Jfeスチール株式会社Jfe Steel Corp
    • MATSUDA HIROSHIHAYAKAWA YASUYUKIWATANABE MAKOTOARAGAKI YUKIHIROYAMAGUCHI HIROSHIWAKISAKA YUIKO
    • C22C38/00C21D8/12C22C38/04C22C38/60H01F1/16
    • 【課題】増硫法を用いて製造する場合に懸念された下地被膜の不安定形成を有利に解消して、下地被膜の被膜密着性ひいては磁気特性に優れた方向性電磁鋼板を安定して得る。【解決手段】フォルステライト下地被膜付き方向性電磁鋼板の表面から板厚中心方向へのMgおよびMnの成分プロファイル分析において、Mgの濃度変化が鋼板表層部においてピークを呈し、一方、Mnの濃度変化は、鋼板表層部の濃度が板厚中心部の地鉄に比べて低いか、または鋼板表層部に板厚中心部の地鉄に比べて高い濃度ピークを有する場合には、鋼板表面からMnおよびMgの濃度ピーク位置までの距離をそれぞれt(Mn)、t(Mg)とするとき、t(Mn)>t(Mg)の関係を満足させる。【選択図】図2
    • 要解决的问题:为了稳定地获得通过使用硫增加方法有利地消除在生产中可能发生的基板膜的不稳定形成的基板膜的膜粘合性优异的磁特性的方向性电磁钢板 解决方案:在从镁橄榄石基材薄膜提供的晶粒取向电工钢板的表面到中心的Mg和Mn的成分分布的分析中,Mg的浓度变化在钢板表面 层部分。 对于Mn的浓度变化,当钢板表面层部分的浓度在板厚的中心部分显示出比碱铁低的峰值,或者显示出高于中心部分中的碱铁的峰值 在钢板表面层部分的板厚度中,晶粒取向电工钢板满足t(Mn)> t(Mg)的关系,其中t(Mn)是从钢板表面到浓度的距离 Mn的峰值位置,t(Mg)是从钢板表面到Mg的浓度峰值位置的距离。
    • 3. 发明专利
    • Method for manufacturing grain-oriented electromagnetic steel sheet
    • 制造面向导电电磁钢板的方法
    • JP2012207278A
    • 2012-10-25
    • JP2011074313
    • 2011-03-30
    • Jfe Steel CorpJfeスチール株式会社
    • SENDA KUNIHIROWATANABE MAKOTOARAGAKI YUKIHIROOMURA TAKESHI
    • C21D8/12C22C38/00C22C38/60H01F1/16
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a grain-oriented electromagnetic steel sheet in which secondary recrystallized grains are made into fine grains over the whole length of a product coil and iron loss is reduced.SOLUTION: In the method for manufacturing the grain-oriented electromagnetic steel sheet, a steel slab containing 0.001-0.20% C, 1.0-5.0% Si, 0.03-1.0% Mn, 0.005-0.040% one or two of S and Se, 0.003-0.050% sol.Al, and 0.0010-0.020% N, is hot-rolled, is cold-rolled to obtained a final sheet thickness, then is subjected to primary recrystallization annealing, and is subjected to final finish annealing after applied with an annealing separating agent consisting of mainly MgO. In the temperature rising step in the primary recrystallization annealing, a temperature rising rate Sduring 300-600°C is set at ≥100°C/s, a temperature rising rate Sduring 600-700°C is set in the range of 30 to (0.5×S)°C/s, and an oxidizing potential P/Pduring 300-700°C is preferably ≤0.05.
    • 要解决的问题:提供一种制造在产品线圈的整个长度上将二次再结晶晶粒制成细晶粒的方向性电磁钢板的方法,并且减少铁损。 解决方案:在晶粒取向电磁钢板的制造方法中,将含有0.001-0.20%C,1.0-5.0%Si,0.03-1.0%Mn,0.005-0.040%S中的一种或两种的钢坯和 Se,0.003-0.050%sol.Al和0.0010-0.020%N进行热轧,冷轧以获得最终的板厚,然后进行一次再结晶退火,并在施加后进行最终成品退火 具有由MgO组成的退火分离剂。 在一次再结晶退火的升温阶段,在300〜600℃的温度上升速度S 1 设定为≥100℃/ s,升温速度S 600-700°C的 2 设定在30〜(0.5×S 1 )°C / s的范围内, 并且在300-700℃期间的氧化电位P H2 优选≤0.05。 版权所有(C)2013,JPO&INPIT
    • 5. 发明专利
    • Method for manufacturing grain-oriented electrical steel sheet
    • 制造面向导电电工钢板的方法
    • JP2011068968A
    • 2011-04-07
    • JP2009222294
    • 2009-09-28
    • Jfe Steel CorpJfeスチール株式会社
    • WATANABE MAKOTOHAYAKAWA YASUYUKITAKASHIMA MINORU
    • C21D8/12C22C38/00C22C38/60H01F1/16
    • PROBLEM TO BE SOLVED: To provide an advantageous method for manufacturing a grain-oriented electrical steel sheet, which can stably manufacture the grain-oriented electrical steel sheet superior in properties of the coating film and magnetic properties as well. SOLUTION: In a process of manufacturing the grain-oriented electrical steel sheet which includes: preparing a steel slab which contains 0.01-0.10% C, 1.0-5.0% Si, 0.5% or less Mn without containing an inhibitor or further contains an appropriate amount of Al, N, Mn, S and/or Se as an inhibitor; hot-rolling the steel slab; annealing the hot-rolled plate; cold-rolling the plate twice while sandwiching intermediate annealing to reduce the sheet thickness to the final thickness; subsequently subjecting the sheet to primary recrystallization annealing; and subjecting the sheet to secondary recrystallization annealing, the method for manufacturing the grain-oriented electrical steel sheet further includes controlling the depth of a desiliconized layer to be obtained after the hot-rolled plate has been annealed to 1 μm or more by adjusting the annealing condition for the hot-rolled plate and/or the subsequent descaling condition, and also removing the scale produced after the intermediate annealing. COPYRIGHT: (C)2011,JPO&INPIT
    • 解决问题的方案:提供一种制造方向性电磁钢板的有利方法,其可以稳定地制造出优异的涂膜性能和磁性能的方向性电磁钢板。 解决方案:在制造方向性电磁钢板的方法中,其包括:制备含有0.01-0.10%C,1.0-5.0%Si,0.5%或更少的Mn而不含有抑制剂的钢坯,或进一步包含 适量的Al,N,Mn,S和/或Se作为抑制剂; 热轧钢板; 退火热轧板; 冷却板两次,夹着中间退火,将板厚减至最终厚度; 随后对片材进行一次再结晶退火; 并且对片材进行二次再结晶退火时,方向性电磁钢板的制造方法还包括通过调整退火来控制将热轧板退火至1μm以上后得到的脱硅层的深度 热轧板的条件和/或随后的除垢条件,以及除去中间退火后产生的氧化皮。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Grain oriented silicon steel sheet and method for producing the same
    • 颗粒导向硅钢板及其制造方法
    • JP2014095129A
    • 2014-05-22
    • JP2012247717
    • 2012-11-09
    • Jfe Steel CorpJfeスチール株式会社
    • WATANABE MAKOTOHAYAKAWA YASUYUKIYAMAGUCHI HIROSHI
    • C22C38/00C21D8/12C21D9/46C22C38/04C22C38/60H01F1/16
    • PROBLEM TO BE SOLVED: To obtain a grain oriented silicon steel sheet, even in the case where a film containing no chromium is applied as a tension film, having high hygroscopic properties on a level same as that in the case where a chromium-containing film is formed.SOLUTION: Regarding the grain oriented silicon steel sheet in which the surface of a steel sheet is provided with a forsterite-based base film and a phosphate-based tension application film containing no chromium, the tension application film is formed by applying a phosphate-based coating treatment liquid containing no chromium to the surface of the forsterite-based base film containing Mn by 0.02 to 0.20 g/mexpressed in terms of weight and S by 0.01 to 0.10 g/mexpressed in terms of weight after final finish annealing and performing baking.
    • 要解决的问题为了获得晶粒取向硅钢板,即使在不含铬的膜作为张力膜的情况下,具有高吸湿性的水平与含铬膜的情况相同 形成。解决方案:关于钢板的表面设置有镁橄榄石基底膜的晶粒取向硅钢片和不含铬的磷酸盐系张力施加膜,通过施加张力施加膜,形成张力施加膜 含有不含铬的磷酸盐系涂布处理液含有以重量计0.02〜0.20g /重量的Mn的镁橄榄石类基膜表面,S为最终成品退火后的重量0.01〜0.10g / 进行烘烤。
    • 10. 发明专利
    • Method of manufacturing grain-oriented magnetic steel sheet
    • 制造面向磁性的钢板的方法
    • JP2012057190A
    • 2012-03-22
    • JP2010198813
    • 2010-09-06
    • Jfe Steel CorpJfeスチール株式会社
    • OKUBO TOMOYUKIWATANABE MAKOTOTAKAMIYA TOSHITO
    • C21D9/46C22C38/00C22C38/60C23C22/00
    • PROBLEM TO BE SOLVED: To provide a method of advantageously manufacturing a grain-oriented magnetic steel sheet excelling in an iron loss characteristic.SOLUTION: When manufacturing a grain-oriented magnetic steel sheet using a steel slab containing, by mass%, 0.02-0.12% of C, 2.0-4.0% of Si, 0.02-0.20% of Mn, 0.01-0.05% of sol. Al, 0.004-0.012% of N, 0.01-0.20% of Sb, 0.005-0.20% of Cu and 0.010-0.040% of S and/or Se, an annealing separating agent containing 1-10 pts.mass of SnOin 100 pts.mass of MgO and 0.001-10 pts.mass of a B compound in terms of B is used, wherein SnOand the B compound satisfy a relationship of [B compound (pts.mass in terms of B)]>0.034×10, and final finish annealing is performed wherein the annealing separating agent is kept at 700-860°C of an elevated temperature process for 10-200 h, and a temperature region of 900-1,050°C is heated at 2-50°C/h in a H-containing atmosphere.
    • 要解决的问题:提供一种有利地制造优异的铁损特性的晶粒取向电磁钢板的方法。 &lt;解决方案&gt;使用以质量%计含有C:0.02〜0.12%,Si:2.0〜4.0%,Mn:0.02〜0.20%,Mn:0.01-0.05% 溶胶。 Al,0.004-0.012%的N,0.01-0.20%的Sb,0.005-0.20%的Cu和0.010-0.040%的S和/或Se,退火分离剂,含有1-10质量度的SnO 2 B化合物满足[B化合物(B))> 0.034×10 <= 0.119×[SnO 2(pts.mass)] 的关系, 进行最终成品退火,其中退火分离剂在高温工艺的700-860℃保持10-200小时,900-150℃的温度区域以2-50℃/ h加热 一个H 2 的气氛。 版权所有(C)2012,JPO&INPIT