摘要:
结合工业化生产的中低牌号无取向硅钢,探讨了生产工艺及成分体系对含磷无取向硅钢磁性能的影响。结果表明,磷元素具有晶粒细化作用,能够抑制热轧组织再结晶,以及减少成品晶粒尺寸,因而会对磁性能产生显著影响。无铝钢中,随着磷含量增加,消除应力退火前、后,磁感变化不大,而铁损逐渐上升;含铝钢中,无论硅含量高低,随着磷含量增加,磁感均单调、快速递减,但随着硅含量升高,磷含量对铁损的影响程度逐渐变弱。采用中间退火处理后,少量的磷含量便能有效改善磁感,而对铁损影响不大。
Abstract:
Based on industrialization of low and medium grade non-oriented silicon steel,the effects of production process and chemical compositions on magnetic properties of phosphorus-bearing non-oriented silicon steel are investigated.The results show that phosphorus could restrain the recrystallization of hot rolled strips and decrease the grain size of finished steel sheets.Thus,phosphorus can remarkably influence magnetic properties of non-oriented silicon steel.For aluminum free steel,the magnetic induction changes little but the iron loss increases gradually with the increase of phosphorus before and after SRA.For aluminum-bearing steel,no matter the silicon content is high or low,the magnetic induction decreases rapidly and continuously with the increase of phosphorus under the same conditions.However,the effects of phosphorus content on the iron loss are gradually weakened with the increase of silicon content.After the intermediate annealing process,a small amount of phosphorus could effectively improve the magnetic induction but result in little iron loss.
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