电工钢 ›› 2021, Vol. 3 ›› Issue (6): 19-.

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常化温度对无取向电工钢组织和性能的影响

姚海东,刘恭涛,胡志远,安冬洋,张保磊,程林   

  1. 首钢智新迁安电磁材料有限公司,河北 迁安 064404
  • 出版日期:2021-12-28 发布日期:2021-12-22

Influence of normalizing temperature on microstructure and properties of non-oriented electrical steel sheets#br#

YAO Haidong,LIU Gongtao,HU Zhiyuan,AN Dongyang,ZHANG Baolei,CHENG Lin   

  1. Shougang Zhixin Qian'an Electromagnetic Materials Co., Ltd.,Qian'an 064404,China
  • Online:2021-12-28 Published:2021-12-22

摘要: 研究了常化温度对无取向电工钢组织及性能的影响。结果表明:常化板织构特征呈现织构梯度分布,中心层分布的主要是{100}〈021〉、{114}〈481〉、{112}〈421〉等α*取向晶粒,Goss和黄铜等取向晶粒则主要分布于表层及次表层区域。经5 min常化处理,常化温度由840 ℃提升到920 ℃,常化板晶粒尺寸增加,成品板晶粒尺寸增加,铁损值P1.5/50降低约0.106 W/kg,成品板中心层{100}取向晶粒体积分数增加,{111}和{112}取向晶粒体积分数降低,织构得以改善,磁感B5000升高约0.016 7 T。

关键词: 无取向电工钢, 常化温度, 组织, 织构

Abstract: The effects of normalizing temperature on the microstructure and properties of nonoriented electrical steel were studied in this paper. The results showed that the texture characteristics of the normalized plate showed gradient distribution. The center layer textures were mainly α* oriented grain of {100}〈021〉,{114}〈481〉,{112}〈421〉 , and the surface and subsurface textures were mainly Goss and brass oriented grain. When the normalization temperature raised from 840 ℃ to  920 ℃ after 5min normalization treatment, the grain sizes of normalized plate and finished plate were increased and the texture were improved, the volume fraction of {100} oriented grains increased and the {111} and {112} oriented grains decreased in the center layer of finished plate, the iron loss P1.5/50 decreased by about 0.106 W/kg, the magnetic induction B5000 increased by about 0.016 7 T.

Key words: non-oriented electrical steel, normalizing temperature, microstructure, texture