根据RH精炼过程钢水传热的物理模型,提出了预报RH精炼过程钢水温度的数学模型.根据此模型可以分别计算真空室内和钢包内钢水的温度变化.计算结果表明:在精炼初期2～3 min内,由于炉壁吸热,钢包内钢水温度迅速降低,随后真空室内钢水温度开始回升,4 min后,钢包和真空室内钢水温度趋于均匀.采用该模型预报实际真空脱碳终了温度,其中平均误差在±5 ℃以内的占72 %.
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