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1. 发明申请

WO1996028576A1 METHOD FOR MAKING A GRAIN-ORIENTED ELECTRIC STEEL SHEET, PARTICULARLY FOR TRANSFORMERS 审中-公开
标题翻译：制造面向电磁钢板的方法，特别适用于变压器
公开(公告)号：WO1996028576A1
公开(公告)日：1996-09-19
申请号：PCT/FR1996000364
申请日：1996-03-08
申请人： USINOR SACILOR , BAVAY, Jean-Claude , POISSONNET, Luc , CASTEL, Jacques , MESSEANT, Freddy , BLANCHOT, Nadine
发明人： USINOR SACILOR
IPC分类号： C21D08/12
CPC分类号： C21D8/1205 , C21D8/1222 , C21D8/1227 , C21D8/1266 , C21D8/1283 , C22C38/02
摘要： A method for making a grain-oriented electric steel sheet, particularly for producing magnetic transformer circuits, comprising continuously casting steel into a steel slab or strip containing less than 0.1 % of carbon, 2.5-4 % of silicon and at least the elements aluminium, nitrogen, manganese, sulphur and copper for forming normal growth inhibiting precipitates; heating the slab or strip; hot-rolling the slab or strip to give a sheet 1-5 mm thick; hot-coiling the hot-rolled sheet; annealing the hot-rolled sheet; cold-rolling to a final thickness of less than 0.5 mm; performing primary recrystallisation and decarburisation annealing in a moist atmosphere; applying magnesia (MgO) to at least one side of the decarburised sheet; performing final secondary recrystallisation and purification annealing; applying an insulating coating and performing final coating curing annealing. The method is characterised in that, after the slab or strip has been produced, the steel comprising 0.02-0.09 wt % of carbon, 2.5-4 wt % of silicon, 0.027-0.17 wt % of manganese, 0.007-0.020 wt % of sulphur, 0.010-0.030 wt % of aluminium, 0.004-0.012 wt % of nitrogen, and 0.06-0.50 wt % of copper, with the balance being iron and impurities, is heated to a temperature higher than 1200 DEG C but no higher than 1300 DEG C, and when the hot-rolled sheet has been produced, the hot-rolled sheet is coiled at 500-700 DEG C.
摘要翻译：一种制造特别用于制造磁性变压器电路的方向性电磁钢板的方法，包括将钢连续铸造到含有小于0.1％的碳，2.5-4％的硅和至少元素铝的钢板或条带中，氮，锰，硫和铜，用于形成正常生长抑制沉淀; 加热板或条; 热轧板坯或带材，得到厚度为1-5毫米的片材; 热轧卷板热轧板; 退火热轧板; 冷轧至最终厚度小于0.5mm; 在潮湿的气氛中进行一次再结晶和脱碳退火; 将氧化镁（MgO）施加到脱碳片材的至少一侧; 进行最终的二次再结晶和纯化退火; 施加绝缘涂层并进行最终的涂层固化退火。该方法的特征在于，在生产板坯或带材之后，钢包含0.02-0.09重量％的碳，2.5-4重量％的硅，0.027-0.17重量％的锰，0.007-0.020重量％的硫，0.010-0.030重量％的铝，0.004-0.012重量％的氮和0.06-0.50重量％的铜（余量为铁和杂质）加热到高于1200℃但不高于1300℃的温度在制造热轧板时，将热轧板卷绕在500〜700℃。

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