步进式加热炉加热时间预测优化

来源期刊：冶金自动化2009年第3期

论文作者：陈永刚

文章页码：33 - 36

关键词：步进式加热炉； 时间预测； 抽出节奏； 待轧策略

Key words：walking beam furnace； time prediction； taking rhythm； waiting rolling strategy

摘    要：主要研究在热轧步进式加热炉过程控制计算机系统中,如何准确预测板坯在炉加热时间。通过分析时间预测计算的相关因素,给出了针对板坯抽出节奏、最小在炉时间和待轧策略等相关因素的时间预测优化手段。其中优化手段主要包括预测策略的改进,采用理论公式计算值替代经验常数,通过实际数据回归修正公式系数等。最后采用离线模拟试验,通过验证结果数据展现了优化效果。整个时间预测优化提高了炉内板坯在炉时间的预测精度,为加热炉自动燃烧控制模型提供了可靠的计算前提条件。同时准确的时间预测既保证了轧线对板坯产量的需求,又保证了板坯有较好的加热质量和较低的燃耗。

Abstract: Accurate prediction of slab heating time in-furnace in process control computer system of walking beam furnace for hot rolling is studied.Through analysis of relevant factors which relate to time prediction calculation,time prediction optimization means which relate to slab taking rhythm,smallest in-furnace time and waiting rolling strategy etc.relevant factors are given.Optimization means include improvement of prediction strategy,theoretical formula calculation instead of empiric constants,and correction of formula factors with actual data regression.Off-line simulation test was carried out to verify result data,and optimization effect is given.Through time prediction optimization,prediction accuracy of slab heating time in-furnace was improved,and prerequisite for reliable calculation was provided for automatic combustion control model of walking beam furnace.At the same time,accurate prediction of time meets the need of slab rolling production line,and slab has better heating quality and fuel consumption is lower.