| 立式连退炉快冷段氢气含量对带钢温度的影响 |
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| 引用本文： | 朱嘉芳,万飞. 立式连退炉快冷段氢气含量对带钢温度的影响[J]. 中国冶金, 2015, 25(2): 6-9. DOI: 10.13228/j.boyuan.issn1006-9356.20140089 |
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| 作者姓名： | 朱嘉芳 万飞 |
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| 作者单位： | 宝钢工程技术集团有限公司冷轧事业部， 上海 201919 |
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| 基金项目： | 新一代节能高效连续热处理机组设计技术研究 |
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| 摘 要： | 立式连续热处理炉快冷段混合气的氢气含量，对换热系数和带钢温度有很大的影响，体现了冷却气体物理性质与换热系数和带钢温度之间的关系。在其他条件相同而氢气含量不同的条件下，对带钢传热状态进行分析，利用冷却设备几何结构、努塞尔数与换热系数的关系，得到带钢瞬时冷却温度计算公式，为生产及工程设计提供了一定的依据。
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| 关 键 词： | 快速冷却 冲击射流 换热系数 高氢 |
Effects of the content of H2 on the temperature of strip in rapid cooling section of vertical continuous annealing furnace |
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| ZHU Jia-fang,WAN Fei. Effects of the content of H2 on the temperature of strip in rapid cooling section of vertical continuous annealing furnace[J]. China Metallurgy, 2015, 25(2): 6-9. DOI: 10.13228/j.boyuan.issn1006-9356.20140089 |
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| Authors: | ZHU Jia-fang WAN Fei |
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| Affiliation: | Cold Rolling Department, Baosteel Engineering and Technologies Group Co., Ltd., Shanghai 201919, China |
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| Abstract: | The content of H2 in gas gives a big influence for convection transfer coefficient and temperature of strip in rapid cooling section of vertical continuous annealing furnace. The situation explains the relation between physical character of gas, transfer coefficient and temperature of strip. The heat transfer character of gas and strip was studied, the change of convection transfer coefficient and temperature of strip was analyzed. It calculates convection transfer coefficient and cooling temperature of strip with different content of H2 in gas, applied relations of equipment configuration parameters, Nusselt number and convection transfer coefficient of gas. The calculating method can offer certain basis for production and designing engineering projects. |
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| Keywords: | rapid cooling jet impact convection convection heat transfer coefficient high-H2 |
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