摘要
本钢在1780 mm热连轧机组利用先进的第三代“双工位无芯卷取式”热卷箱生产中低牌号无取向硅钢产品。对比常规配置保温罩的1700 mm热轧机组,终轧温度控制能力得到大幅度提升,使低温出炉工艺得以稳定实现,大幅度减少了第二相的固溶和析出,避免其在晶界处形成细小弥散分布,形成有利的热轧板组织基础,为后续成品退火工序获得理想晶粒尺寸奠定基础,从而获得优秀的磁性能。热卷箱投用后,终轧温度平均值从850℃提高到880℃,对比常规机组,铁损下降了8.3%,磁感提高了0.01 T。
In the 1780 mm hot rolling mill,Bengang uses advanced third-generation"dual station coreless coiling"hot coil boxes to produce low to medium grade non-oriented silicon steel products.Compared with the conventional 1700 mm hot rolling mill equipped with insulation covers,the finishing temperature control capability has been greatly improved,enabling the stable implementation of the low-temperature tapping process.This significantly reduces the solid solution and precipitation of the second phase,avoids its fine dispersed distribution at grain boundaries,forms a favorable hot-rolled plate structure foundation,lays the groundwork for obtaining an ideal grain size in the subsequent finished product annealing process,and thus achieves excellent magnetic properties.After the commissioning of the hot coil box,the average finishing temperature increased from 850℃to 880℃.Compared with conventional units,the iron loss decreased by 8.3%and the magnetic induction increased by 0.01 T.
作者
张冰
李德君
王飞
郭立合
ZHANG Bing;LI Dejun;WANG Fei;GUO Lihe(Technical Center of Bengang Group Corporation,National and Local Joint Engineering Laboratory of Advanced Automotive Steel Development and Application Technology,Benxi 117000,China;Beiying Hot Rolling Mill of Bengang Group Corporation,Benxi 117000,China)
出处
《电工钢》
2025年第6期49-53,共5页
ELECTRICAL STEEL
关键词
无取向硅钢
热卷箱
终轧温度
第二相
磁性能
non-oriented silicon steel
hot coil box
finishing temperature
the second phase
magnetic properties
