자기 특성이 극히 우수한 방향성 전자강판의 제조 방법
    7.
    发明公开
    자기 특성이 극히 우수한 방향성 전자강판의 제조 방법 有权
    具有极高磁性特性的晶圆磁性钢板及其相似工艺

    公开(公告)号:KR1020080012957A

    公开(公告)日:2008-02-12

    申请号:KR1020077028877

    申请日:2006-05-19

    Abstract: A grain-oriented magnetic steel slab comprising given components is re-heated at a temperature which is 1,280°C or higher and is not lower than the solid-solution-forming temperature of an inhibitor, hot-rolled, annealed, cold-rolled, annealed with decarburization, nitrided in the state of running as a strip, coated with an annealing separating agent, and subjected to finish annealing. In this process, the hot rolling is conducted so that the proportion of nitrogen precipitated as AlN is 20% or lower based on all nitrogen and the average diameter of primary particles formed by recrystallization is in the range of 7-20 mum, excluding 20 mum. Furthermore, the nitriding is conducted so as to result in a nitrogen increase N within the range shown by the relationship (1) and in nitrogen contents in parts located in 20% thickness positions on each side of the steel sheet, cN1 and cN2 (front and back; mass%), within the range shown by the relationship (2). 0.007-([N]-14/48 x [Ti])

    Abstract translation: 包含给定组分的晶粒​​取向电磁钢板在1280℃或更高的温度下再加热,并且不低于抑制剂的固溶体形成温度,热轧,退火,冷轧, 退火退火,以带状运行的状态氮化,涂覆有退火分离剂,并进行最终退火。 在该方法中,进行热轧,使得作为AlN析出的氮的比例基于全部氮为20%以下,通过重结晶形成的一次粒子的平均直径为7〜20μm,不含20μm 。 此外,进行氮化,以使得在由(1)的关系所示的范围内产生氮增加N,并且在钢板,cN1和cN2(前面)的每一侧的20%厚度位置的部分中的氮含量 和回;质量%),在关系(2)所示的范围内。 0.007 - ([N] -14/48 x [Ti])<= N <= [solAl] x 14/27 - ([N] -14/48 x [Ti])+ 0.0025关系(1)| cN1- cN2 | / N <= 0.35关系(2)

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