Normalizing annealing process of 27QG090 high magnetic induction oriented silicon steel

doi:10.13251/j.issn.0254-6051.2023.01.032

Abstract

Abstract: Normalizing annealing of 27QG090 high magnetic induction oriented silicon steel was completed in laboratory by using pilot-scale test platform, and the microstructure and macro texture were analyzed by means of optical microscope, X-ray diffractometer, TEM and EDS. The results show that the microstructure of the 27QG090 steel after normalizing annealing is ferrite, the macro texture is mainly α, α^* and copper texture, and with weak Gauss texture. The precipitate after normalizing annealing is mainly AlN, whose average size is about 40 nm. Comprehensive analysis shows that the optimal normalizing annealing process is heating at 1120 ℃ for 3 min and at 920 ℃ for 3 min, then 100 ℃ water quenching.

Key words: oriented silicon steel, normalizing annealing, microstructure, texture

CLC Number:

TG142

Lu Xiaoyu, Dong Lei, Huang Li, Liu Baozhi. Normalizing annealing process of 27QG090 high magnetic induction oriented silicon steel[J]. Heat Treatment of Metals, 2023, 48(1): 186-189.

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