针对某1 420 mm冷轧厂无取向硅钢投产后出现硅钢横向厚度差较大、难以达到下游客户要求的问题,对该厂热轧来料对冷轧生产无取向硅钢的适应性和UCM轧机板形调控性能进行分析.通过现场工业试验和辊系变形有限元仿真,研究了热轧、冷轧主要工艺参数对硅钢横向厚度差的影响,并优化相关工艺参数,最终提出满足客户需求的冷轧无取向硅钢横向厚度差控制技术方案.该技术方案应用于现场生产后,无取向硅钢横向厚度差控制在10 μm以内的命中率从应用前的不到60%上升到100%,而7 μm以内的命中率达到90%以上.
Currently,the difference of transverse thickness was large in a 1420 mm cold mill in the beginning of the pro-duction of cold rolled non-oriented silicon steel. Hence,the quality could hardly meet the requirement of downstream us-ers. To solve the problem,the adaptability of the hot rolled strip for the production of cold rolled non-oriented silicon steel and the strip shape control performance of the UCM were investigated. With the industrial field experiment conducted, combining the finite element analysis of the roll stack deflection,the influence of the different hot rolling and cold rolling processes on the non-oriented silicon steel transverse thickness difference was studied. Consequently,the main hot rolling and cold rolling processes parameters were optimized and a set of technology schedule for non-oriented silicon steel trans-verse thickness difference control was also proposed. With the technology schedule applied to the industrial production, the hit rate of non-oriented silicon steel transverse thickness difference has been improved a lot. The hit rate within 10 μm rose from less than 60%to 100%. The hit rate within 7 μm came up to 90%.
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