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硅钢片因其使用特点对热轧板形控制提出了较高的要求,近年来,采用边部加热器提高中间坯边部温度是热轧硅钢生产的新工艺,边部加热器的投入,能够降低板坯的断面温差,提高板坯温度的均匀性,对提高边部质量有显著作用。但是,提高边部温度会对部分板形指标(如边降等)产生一些负面影响,造成下游工序板形质量的恶化。针对使用边部加热器的上述特点,研究了边部加热器的工作原理及设备功能,重点分析了热轧硅钢生产中边部加热器控制逻辑及工艺参数,结合生产中硅钢的凸度指标、边降指标及裂边、翘皮等缺陷,通过设计典型工况试验,对边部加热器的控制逻辑及工艺参数进行了优化,确定了相对最优的工艺参数,并应用于生产实践,保证了硅钢产品的边部质量及板形指标,提高了产品的成材率。
In recent years, the use of edge heaters to increase the temperature of the edge of the billet is a new process for the production of hot-rolled silicon steel. The input of the edge heaters enables the silicon steel sheets to have higher requirements for the hot- Reduce the cross-section temperature difference of the slab, raise the uniformity of the slab temperature, and have a significant effect on improving the quality of the side. However, raising the temperature at the edges can have some negative effects on some of the flatness indicators (such as edge drop), resulting in deterioration of the quality of the downstream process. In view of the above characteristics of using edge heaters, the working principle and equipment functions of edge heaters are studied. The control logic and process parameters of edge heaters in the production of hot-rolled silicon steel are analyzed emphatically. Combining with the crown index of silicon steel in production, Edge index and crack, warp and other defects, through the design of typical test conditions, the edge of the heater control logic and process parameters were optimized to determine the relative optimal process parameters, and applied to the production practice to ensure that The edge of the quality of silicon steel products and shape indicators, improved product yield.