硬质薄规格镀锡板平整轧制变形行为与辊形技术

Rolling deformation of high-intensity and thin tinplates and roll profile of a skin pass mill

以某厂镀锡板连退机组双机架HCM平整机为研究对象,理论分析结合有限元仿真和现场实验,对硬质薄规格镀锡板的平整轧制变形行为进行了研究,揭示了硬质薄规格镀锡板平整时轧制力偏大、实际延伸率达不到设定目标延伸率以及实物板形质量较差的原因,确定了相应的解决问题的技术思路.在此基础上,运用基于有限元仿真的辊形设计方法和软件,研制了新的中间辊端部辊形.生产应用结果表明,该中间辊端部辊形能够有效地减轻压靠、稳定实现设定的目标延伸率且实际平整轧制力降低10%～20%,而且还可以根据需要在正常平整轧制力下使实际延伸率增加0.1%～0.2%.

The rolling deformation of high-intensity and thin tinplates was investigated for an HCM skin pass mill by FEM method and field experiment.Some reasons for higher actual roll force and poor flatness were revealed,and the solutions to these problems were determined.Based on the FEM analysis and roll profile design software,a new polynomial curve of the intermediate roll profile was proposed.Practical applications showed that the forced-contract was mitigatory,i.e.,the actual roll force decreases by 10% to 20% and the actual elongation increases by 0.1% to 0.2%.