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基于钢坯氧化机理的综合分析,利用数值模拟方法研究空气消耗系数对CSP均热过程钢坯氧化烧损的影响。结果表明,在保证燃烧完全的条件下尽量降低空气消耗系数,有利于提高钢坯的温度,减少加热时间,降低钢坯氧化烧损量;增大空气消耗系数将使钢坯温度均匀性恶化,但空气消耗系数增大到一定程度时,钢坯温度均匀性则变化不大;炉气中的氧气对钢坯的氧化性大于二氧化碳和水蒸汽,应当严格控制炉内氧气的残留量,以减小氧化烧损。
Based on the comprehensive analysis of the mechanism of billet oxidation, the influence of air consumption coefficient on the oxidative burning loss of billet during CSP soaking was studied by numerical simulation. The results show that reducing the air consumption coefficient as much as possible under the condition of complete combustion can improve the temperature of billets, reduce the heating time and reduce the oxidation loss of billets. Increasing the air consumption coefficient will worsen the temperature uniformity of billets, but the air consumption When the coefficient increases to a certain extent, the temperature uniformity of the billet does not change much. Oxygen in the furnace gas oxidizes the billet more than carbon dioxide and water vapor. The residue of oxygen in the furnace should be strictly controlled so as to reduce the oxidative burning loss.