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1. 发明授权

US5393355A Low-iron loss grain oriented electromagnetic steel sheet and method of producing the same 失效
标题翻译：低铁损晶粒取向电磁钢板及其制造方法
公开(公告)号：US5393355A
公开(公告)日：1995-02-28
申请号：US964367
申请日：1992-10-21
申请人： Koh Nakano , Keiji Sato , Bunjiro Fukuda
发明人： Koh Nakano , Keiji Sato , Bunjiro Fukuda
IPC分类号： C21D8/12 , C25F3/14 , H01F1/16 , H01F1/18 , H01F41/02 , H01F1/04
CPC分类号： C21D8/1294 , H01F1/18 , C21D8/1277
摘要： A low-iron loss grain oriented electromagnetic steel sheet subjected to final finishing annealing has a plurality of linear grooves formed on surface of the steel sheet in a direction across the rolling direction, so as to improve the magnetic characteristics of the steel sheet. The linear grooves have a substantially rectangular cross-sectional shape in which the angle of a groove side wall to the direction of the thickness of the sheet is about 60.degree. or less. Projections are present at a bottom portion of the groove, and the depth at the top of the projection at the groove bottom is at least about 1/2 of the maximum groove depth. The steel sheet maintains a low iron loss even after stress relief annealing. The present invention provides a method of stably producing the steel sheet.
摘要翻译：进行最终精加工退火的低铁损晶粒取向电磁钢板在轧制方向上沿钢板表面形成多个直线槽，以提高钢板的磁特性。线性槽具有基本上矩形的横截面形状，其中槽侧壁与板的厚度方向的角度为约60度以下。突起存在于凹槽的底部，并且在凹槽底部的突起的顶部处的深度至少为最大凹槽深度的大约1/2。钢板即使在消除应力退火后也保持低的铁损。本发明提供一种稳定地制造钢板的方法。

2. 发明授权

US06228182B1 Method and low iron loss grain-oriented electromagnetic steel sheet 失效
标题翻译：方法和低铁损晶粒取向电磁钢板
公开(公告)号：US06228182B1
公开(公告)日：2001-05-08
申请号：US08365313
申请日：1994-12-28
申请人： Koh Nakano , Atsuhito Honda , Keiji Sato
发明人： Koh Nakano , Atsuhito Honda , Keiji Sato
IPC分类号： C21D946
CPC分类号： H01F1/14783 , C21D8/1294 , C23C26/00
摘要： A method and a low iron loss grain-oriented electromagnetic steel sheet are disclosed. The method comprises the steps of: hot-rolling a grain-oriented electromagnetic steel sheet; cold-rolling the hot-rolled steel sheet once or twice intervened by intermediate annealing, so as to achieve the sheet thickness of a final product; annealing the cold-rolled steel sheet for decarburization; finish-annealing the decarburized steel sheet; forming linear grooves on the steel sheet substantially perpendicularly to the rolling direction, after the final cold-rolling step and before the finish-annealing step, by, for example, electrolytic etching or acid dipping; and filling the linear grooves with an element selected from the group consisting of Sn, B and Sb, or an oxide or a sulfate of an element selected therefrom. Preferably, each of the linear grooves has a width of 30-300 &mgr;m and a depth of 5-100 &mgr;m, and extends at 60-90° to the rolling direction, and is apart from the adjacent groove by 1 mm measured parallel to the rolling direction.
摘要翻译：公开了一种方法和低铁损晶粒取向电磁钢板。该方法包括以下步骤：对晶粒取向的电磁钢板进行热轧; 通过中间退火将热轧钢板冷轧一次或两次，以达到最终产品的板厚; 退火冷轧钢板脱碳; 脱碳钢板完成退火; 在最终冷轧步骤之后和最终退火步骤之间，通过例如电解蚀刻或酸浸法，在钢板上大致垂直于轧制方向形成线性槽; 并用选自Sn，B和Sb的元素或选自其中的元素的氧化物或硫酸盐填充线性槽。优选地，每个线性槽的宽度为30-300μm，深度为5-100μm，并且沿着轧制方向以60-90°延伸，并且与相邻的槽分开1mm，平行于滚动方向。

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