摘要
针对轧钢生产线步进梁式加热炉厚板坯加热工艺，开发了数值模拟计算程序，并通过黑匣子测温数据对等效辐射换热系数进行标定，提高了厚规格板坯的模拟计算精度。对250，400mm厚规格板坯加热工艺的模拟计算结果表明，在18块／h的轧制节奏下，400mm厚板坯在炉时间至少需要360min以上才能保证加热质量，且在与薄规格板坯混装入炉时需优化厚规格和薄规格板坯的混装规程，以免影响轧制节奏及加热效率。
A numerical simulation program was developed on the heavy slab reheating process in the walking beam furnace in rolling practice. The equivalent radiation coefficients in the reheat transfer model were rectified by the black-box experimental data, which improved the precision of heavy slab reheating calculation. According to the modeling results for thickness of 250 mm and 400 mm heavy slabs under the rolling rhythm of 18 pieces per hour, the reheating uniformity of 400 mm heavy slab could be ensured by increasing reheating time to longer than 360 minutes, and the mixed charging schedule of thin and thick slabs should be optimized in order not to influence the rolling rhythm and reheating efficiency.
出处
《首钢科技》
2014年第4期8-11,共4页
Shougang Science and Technology
关键词
步进梁式加热炉
等效辐射换热系数
数值模拟
厚板坯
walking-beam furnace, equivalent radiation coefficient, numerical simulation, heavy slab
