Annealing method of non-oriented silicon steel with excellent comprehensive performance

CN120738431APending Publication Date: 2025-10-03BAOTOU IRON & STEEL (GROUP) CO LTD
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Patent Information

Application Number
CN202510793576.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-13
Publication Date
2025-10-03

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Abstract

The invention discloses an annealing method of non-oriented silicon steel with excellent comprehensive performance, and belongs to the field of sports equipment. A four-section annealing furnace is adopted to anneal a cold-rolled sheet, and comprises a heating section, a soaking section, a pipe cooling section and a rapid cooling section; wherein the temperature of a heating section is 680-900 DEG C, the temperature of a soaking section is 600-800 DEG C, the annealing time is 2 min, the outlet temperature of a pipe cooling section is controlled to be 400 + / -20 DEG C, and the outlet temperature of a rapid cooling section is controlled to be 150 + / -10 DEG C; the annealing atmosphere is N2-H2 mixed gas, and the dew point is controlled to be less than or equal to-40 DEG C; according to the method, the recrystallization grain proportion of the finished product is controlled by accurately controlling annealing process parameters, the optimal solutions of the magnetic performance and the mechanical performance are obtained, and a foundation is laid for research and development of non-oriented silicon steel products with excellent comprehensive performance.
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Citation Information

Patent Citations

  • Non-oriented silicon steel for high-speed motor rotors with yield strength ≥500MPa and its manufacturing method

    CN107964631B

  • Non-oriented silicon steel for high-speed motor rotor with yield strength of greater than or equal to 600 Mpa and production method thereof

    CN107974620A

  • High-strength non-oriented silicon steel based on structure inheritance and preparation method of high-strength non-oriented silicon steel

    CN115747444A

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