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本文根据生产统计和试验资料,总结了转炉连铸坯生产热轧硅钢片的经验,解决了多炉连铸的难题,连铸比达到95％。采用严格控制化学成份,钢包吹Ar精炼的冶炼工艺,较低终轧温度,较大压下率的热轧工艺和煤气保护退火,较长时间保温的热处理制度;使硅钢片获得较高的电磁性能,高牌号率达到57.38％。文章还分析了存在问题,提出了进一步提高质量的途径及必需采用新技术的建议。
Based on the production statistics and experimental data, this paper summarizes the experience of the production of hot-rolled silicon steel sheets in BOF casting and solves the problem of continuous casting of multiple furnaces. The continuous casting ratio reaches 95%. Strict control of chemical composition, ladle blowing Ar refining smelting process, a lower rolling temperature, a greater reduction in the rate of hot-rolling process and gas protection annealing, heat treatment for a longer time insulation system; silicon steel sheet to obtain higher electromagnetic Performance, high grade rate of 57.38%. The article also analyzes the existing problems, proposes ways to further improve the quality and the necessity of adopting new technologies.