摘要
处理不同入炉温度的钢坯需采用合理的加热时间和工艺,针对此问题,采用数值模拟的方法研究入炉温度分别为200,400,600,700℃的钢坯最佳加热时间和加热质量。通过利用Fluent流体计算软件建立了钢坯非稳态导热模型和氧化烧损模型,模拟结果表明:在相同的加热工艺下,钢坯入炉温度为27℃,炉内停留时间为180min时,位于预热段的第5块钢坯表面受到的辐射热流最大,达到92kW/m2,出炉钢坯氧化率为1.419%;钢坯入炉温度为200℃时,合理的炉内停留时间为150min,出炉温度达到1183℃,出炉钢坯氧化率为1.307%。
It＇ s necessary to investigate the appropriation of the heating time and process for different charging temperature. For this problem, the method of numerical simulation was performed to investigate the optimal heating time and the quality of the slab charged at the temperature of 200, 400, 600, 700℃. Transient heat conduction model and oxidation model were established by the software of Fluent. Simulation results show that： the fifth slab receives largest radiation flux about 92 kW/m^2 that has initial temperature of 27℃ and the residence time of 180 rain; the residence time of 150 min satisfies the rolling for the charging temperature 200℃ of the slab, which reaches the temperature of 1 183℃ and the oxidation rate is 1.307% when it leaves the furnace.
出处
《工业加热》
CAS
2009年第5期34-36,共3页
Industrial Heating
关键词
加热炉
钢坯
热装
质量
数值模拟
reheating furnace
slab
oxidation
quality
numerical simulation
