摘要
针对以往现场对于连退机组RCS段带钢与风箱间距、循环风机转速以及冷却气体中H2含量与带钢冷却速度之间的关系仅仅停留在定性分析阶段、无法实现定量调整的问题,结合连退机组RCS段的设备与工艺特点,考虑到气体导热系数和比热等气体物性参数随着所接触带钢温度的变化而变化的特性,建立了一套连退机组RCS段带钢冷却速度的预报模型,给出了相应的模型计算方法,定量分析了带钢与风箱间距、循环风机转速以及冷却气体中H2含量等可优化参数对带钢冷却速度的影响。并将模型应用到现场冷却速度的预报与可优化参数的定量调整,取得了良好的使用效果。
Aiming at the problems that the relationship between the distance from strip steel to bellows,rotational speed of circulating fan and H2 content in cooling gas and cooling speed of strip steel in RCS section of continuous annealing unit only remained in the qualitative analysis stage and could not be adjusted quantitatively in the past,combining with the equipment and process characteristics of the RCS section of the continuous annealing unit,the characteristics that the gas physical property parameters such as gas thermal conductivity and specific heat vary with the temperature of the strip steel were considered,a set of prediction model for the cooling rate of the strip steel in the RCS section of the continuous annealing unit was established,and the corresponding calculation method was given.The influence of the optimizable parameters such as the distance from strip steel to bellows,the rotational speed of circulating fan and the H2 content in cooling gas on the cooling rate of strip steel was analyzed quantitatively.The model was applied to the prediction of the cooling rate and the quantitative adjustment of the optimizable parameters in the scene.Good application results are achieved.
作者
雷彤
赵圳
翟乾俊
姚利辉
夏益伟
白振华
郭丽涛
LEI Tong;ZHAO Zhen;ZHAI Qian-jun;YAO Li-hui;XIA Yi-wei;BAI Zhen-hua;GUO Li-tao(National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao 066004,China;State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China;Shandong Guanzhou Co.,Ltd.,Liaocheng 252500,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2020年第3期171-177,共7页
Journal of Plasticity Engineering
基金
河北省自然科学基金资助项目(E2016203385)
重型机械协同创新计划课题(ZX01-20140400-05)。
关键词
连续退火
带钢冷却速度
H2含量
带钢与风箱间距
风机转速
continuous annealing
cooling speed of strip steel
H2 content
distance from strip steel to bellows
rotational speed of circulating fan