电工钢 ›› 2026, Vol. 8 ›› Issue (2): 42-46.

• • 上一篇    下一篇

二次冷轧工艺对极薄无取向硅钢磁性能的影响

石祥聚,刘笑笑,汪祥,闫成亮,杜星宏,陈明毅    

  1. (无锡普天铁心股份有限公司,江苏无锡 214104)
  • 出版日期:2026-04-28 发布日期:2026-04-29

Influence of two‑stage cold rolling process on magnetic properties of ultra‑thin non‑oriented silicon steel

SHI Xiangju, LIU Xiaoxiao, WANG Xiang, YAN Chengliang, DU Xinghong, CHEN Mingyi   

  1. (Wuxi Putian Iron Core Co., Ltd., Wuxi 214104, China) 
  • Online:2026-04-28 Published:2026-04-29

摘要:

新能源汽车和高效电机的发展,对无取向硅钢的性能提出了更高的要求。本文以硅质量分数 3.2%~3.4% 的无取向硅钢热轧板为对象,经 950℃高温常化后采用二次冷轧工艺制备 0.15mm 冷轧板,再经 1000℃最终退火,研究不同冷轧压下率分配对晶粒尺寸、织构演变及磁性能的影响规律。结果表明:当一次冷轧压下率为 87.5%、二次冷轧压下率为 40% 时,成品退火板的有利 λ 织构与 Goss 织构显著增强,有害 γ 织构占比降低,晶粒尺寸调控至合理区间,磁性能达到最优。 

关键词:

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无取向硅钢;二次冷轧;压下率;织构;磁性能

Abstract:

The development of new energy vehicles and high‑efficiency motors has raised higher requirements for the performance of non‑oriented silicon steel. In this paper, hot‑rolled sheets of non‑oriented silicon steel with silicon mass fraction of 3.2%~3.4% were subjected to high‑temperature normalizing at 950℃, followed by two‑stage cold rolling to obtain 0.15mm cold‑rolled sheets, and then final annealing at 1000℃. The effects of different cold rolling reduction rate distributions on grain size, texture evolution and magnetic properties were investigated. The results show that when the first cold rolling reduction rate is 87.5% and the second cold rolling reduction rate is 40%, the favorable λ texture and Goss texture of the finished annealed sheets are significantly enhanced, the proportion of detrimental γ texture is reduced, the grain size is controlled in a reasonable range, and the magnetic properties are optimal. 

Key words:

non-oriented silicon steel, two-stage cold rolling, reduction rate, texture, magnetic properties