Development of Technology for Producing High-Alloyed EIS with Low Specific Magnetic Losses and High Adhesion of Electrical Insulating Coating

• Published in: Steel in translation 2022, Vol.52 (6), p.602-608
• Main Authors: Morozov, A. V., Lavrov, V. A., Cheglov, A. E., Degtev, S. S., Barybin, V. A., Chernikov, O. V., Saitgaraev, A. A., Yusupov, V. S., Komolova, O. A., Semin, A. E., Kosyrev, K. L.
• Format: Article
• Language: English
• Subjects: Adhesion; Alloying; Aluminum; Annealing; Antimony; Chemistry and Materials Science; Cold rolling; Cold-rolled steel; Heat treatment; High alloy steels; Hot rolling; Hot-rolled steel; Low level; Materials Science; Texture; Thickness; Tin
• ISSN: 0967-0912; 1935-0988
• DOI: 10.3103/S0967091222060092

In the paper, we study the complex effect of the normalization annealing modes of hot-rolled steel on the texture of high-alloy electrical isotropic steel with a high aluminum content and metal microalloying with tin and antimony while developing a technology for the production of high-alloy (Si content is > 2.9%) cold-rolled electrical isotropic steel with a low level of specific magnetic losses ( P 1.5/50 ≤ 2.50 W/kg for strips with a nominal thickness of 0.50 mm and P 1.5/50 ≤ 2.35 W/kg for strips with a nominal thickness of 0.35 mm). Alloying of steel with aluminum (Al > 1.0%) and tin (Sn > 0.025%) improves the texture of the finished steel, significantly reducing the level of specific magnetic losses. The effect of heat treatment modes of cold-rolled steel on the formation of the microstructure of the annealed metal and the adhesion of the electrical insulating coating is considered.