摘要
取向硅钢常化工序主要采用现场实测带钢温度的方式测定冷却速率,并通过稳定冷却水温、调整冷却水量及喷梁运行数量等方式保证合理的冷却速率,给常化工艺设计和生产带来诸多不便。通过对常化工艺水冷过程带钢的传热分析求解,在建立带钢水冷温度模型的基础上,研究了不同冷却工艺参数对带钢温度及冷却速率的影响规律以及冷却工艺的交互作用结果。结果表明:模型计算结果能够较好地反映取向硅钢在常化水冷过程中的温度及冷却速率的变化,其计算误差为0.80%~4.11%;在特定取向硅钢厚度规格和常化工艺下,随着常化冷却水量及有效冷却长度的增加,带钢水冷温度及冷却速率与呈非线性变化;常化水冷工艺主要通过调控带钢与冷却水之间热交换量和交换时间实现对带钢温度的控制,实际生产中需综合考虑机组速度、冷却水量及有效冷却长度之间的交互作用,选定喷梁投入数量和冷却水量以获得稳定的冷却速率。
The cooling rate of normalization process mainly determined by measuring the grain oriented silicon steel strip temperature on site, and ensures the cooling rate by stabilizing the cooling water temperature, adjusting the cooling water volume and the operation quantity of spray beam, which brings inconvenience to the normalization process design and production. Based on the heat transfer of strip in the water cooling section of normalization process, the water cooling temperature model for the normalization process of grain oriented silicon steel strip was established. Based on the research of the influence of different cooling parameters on strip temperature and cooling rate, the interaction of water cooling parameters were studied. The results show that the temperature model can reflect the temperature and cooling rate very well, and the calculation error reach 0.80%-4.11%. Under the given gauge and normalization process of grain oriented silicon steel strip, with the increasing of cooling water flow and effective cooling length, the strip temperature and cooling rate appears nonlinearly variation. The normalized water cooling process mainly controls the strip temperature by the heat exchange amount and exchange time between the strip and the cooling water. In actual production, it is necessary to comprehensively consider the interaction between the unit speed, cooling water volume and effective cooling length, and select the input quantity of spray beam and cooling water volume to obtain a stable cooling rate.
作者
贾志伟
李元华
王晓达
张海利
王项龙
JIA Zhiwei;LI YuanHua;WANG Xiaoda;ZHANG Haili;WANG Xianglong(Iron and Steel Research Institutes,Ansteel Group Corporation,Anshan 114009,China;Cold Rolled Silicon Steel Plant,Ansteel Co.,Ltd.,Anshan 114009,China;Manufacturing Management Department,Ansteel Co.,Ltd.,Anshan 114009,China)
出处
《轧钢》
2022年第1期43-49,共7页
Steel Rolling
关键词
取向硅钢
常化工艺
温度模型
冷却速率
机组速度
冷却水量
有效冷却长度
grain oriented silicon steel
normalization process
temperature model
cooling speed
unit speed
cooling water volume
effective cooling length
