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发明公开
CN104372238A 一种取向高硅钢的制备方法 有权

一种取向高硅钢的制备方法
摘要：
一种取向高硅钢的制备方法，属于冶金技术领域，按以下步骤进行：（1）按设定成分冶炼钢水，其成分按重量百分比含C0.001~0.003%，Si5.0~6.6%，Mn0.2~0.3%，Al0.05~0.12%，V0.01~0.04%，Nb0.03~0.06%，S0.02~0.03%，N0.009~0.020%，O≤0.0020%，余量为Fe及不可避免杂质；（2）薄带连铸过程后形成铸带；（3）在惰性气氛条件下进行热轧；（4）冷却至550~600℃卷取，在氮气气氛条件下进行低温热轧/温轧；（5）酸洗去除氧化皮，然后进行多道次冷轧；（6）再结晶退火，涂覆MgO涂层，最后卷取；（7）在氢气流通的条件下，进行净化退火；（8）去除氧化铁皮，涂覆绝缘层，平整拉伸退火，空冷卷取。本发明的方法省去高温退火前的脱碳流程，简化初次再结晶工艺难度，提高了高硅钢铸带的低温成型性能成品的磁性能。
摘要（英）：

The invention discloses a preparation method of oriented high-silicon steel, and belongs to the technical filed of metallurgy. The method comprises the following steps: smelting molten according to preset components comprising 0.001-0.003wt% of C, 5.0-6.6wt% of Si, 0.2-0.3wt% of Mn, 0.05-0.12wt% of Al, 0.01-0.04wt% of V, 0.03-0.06wt% of Nb, 0.02-0.03wt% of S, 0.009-0.020wt% of N, 0.0020wt% or less of O, and the balance of Fe and inevitable impurities; 2, continuously casting a thin ribbon to form a cast ribbon; 3, carrying out hot rolling in inert atmosphere; 4, cooling to 550-600DEG C, reeling, and carrying out low temperature hot rolling/warm rolling in nitrogen atmosphere; 5, pickling to remove scales, and carrying out multi-pass cold rolling; 6, carrying out recrystallization annealing, coating a MgO coating, and reeling; 7, carrying out purifying annealing under hydrogen circulation conditions; and 8, removing oxide scales, coating an insulation layer, carrying out flattening stretching annealing, carrying out air cooling, and reeling. The method omits decarbonization before high temperature annealing, simplifies a primary recrystalization process, and improves the magnetic performances of the low temperature formed performance finished product of the high-silicon steel cast ribbon.

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