微合金热连轧带钢轧制过程温度变化的数学模型

Mathematical Modelling on Temperature Change of Microalloyed Steel Strip during Hot Continuous Rolling

根据现场实测数据的研究 ,建立了铌微合金化高强度低合金 2 10～ 2 5 0mm厚板坯轧成 3.0～ 8.0mm成品带钢在 3 4连续式轧机组粗轧和精轧时轧件温度计算模型 ,包括辊道、粗轧段、精轧段、层流冷却段轧件温降的计算公式。结果表明 ,模型预报和实测轧件温度在粗轧出口平均误差小于± 14℃ ,在精轧出口小于± 5℃ ,卷取入口小于± 10℃。

Based on study of real measured data at situ, the calculated modelling of rolling stock temperature of Nb microalloyed HSLA steel during rough and finish rolling from thickness 210～250 mm slab to 3.0～8.0 mm finishing strip by 3/4 hot continuous rolling mill train including calculation to stock temperature reduction at roll table, rough rolling, finishing rolling and laminar flow cooling section has been established. The results showed that the average error of stock temperature between modelling predicted and real measured value was less than ±14 ℃ at tough rolling outlet, less than ±5 ℃ at finish rolling outlet and less than ±10 ℃ at coiling inlet.