高品质冷轧板材对生产工艺的要求非常高。因此快速稳定便于控制的冷却速度就成为提高产品品质的一个重要方法。本文采用标准k-ε紊流模型，对连续退火炉中快冷段局部带钢的二维非稳态温度场进行CFD模拟，模拟与实验结果吻合较好。研究发现，从温度均匀性和冷却速度来看，当氢气占30%时，冷却效果最佳；控制冷却速度可以通过控制带钢初始温度、带钢与风箱间距和冷却气体喷出速度等参数来实现。
The requirement to the high-quality cold-rolled sheet production process is very high. Therefore the easy controlled rapid stable cooling rate has become an important way to enhance the quality of steel robin. In present paper, the unsteady standard k-ε turbulence model was adopted to simulate the continuous annealing furnace steel cooling process, the simulation agrees the experimental results very well. The investigation found that the temperature uniformity and cooling rate are optimized when the hydrogen concentration is 30%; controlling cooling rate can be realized by controlling the initial temperature, bellows-strip spacing and jet rate of the cooling gas.
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