Comparison of HiB and CGO orientation silicon steels and its normalizing annealing process

doi:10.13251/j.issn.0254-6051.2024.01.037

Abstract

Abstract: Main differences between common oriented silicon steel (CGO) and high magnetic induction oriented silicon steel (HiB) were analyzed in detail from the perspective of chemical composition system and production process, and the laboratory research of normalizing annealing process and industrial trial production of the HiB steel were carried out. The results show that the main difficulty in transforming the production of the CGO steel to the HiB steel is the formulation of normalizing annealing process. The optimal laboratory normalizing annealing process of the HiB steel is the annealing temperature of 1120 ℃, annealing time of 4 min, and air cooling temperature from 900 ℃. The microstructure of the HiB steel after hot rolling and normalizing annealing is ferrite, and the microstructure after normalized annealing is mainly recrystallized grains distributed along the rolling direction. The main texture types of the industrial trial-produced HiB steel after normalizing annealing are Goss texture {110}<001> and copper texture {112}<111>.

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

CLC Number:

TG142

Yang Yuanyuan, Wang Dong, Huang Li, Liu Baozhi. Comparison of HiB and CGO orientation silicon steels and its normalizing annealing process[J]. Heat Treatment of Metals, 2024, 49(1): 228-234.

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