微减宽轧制技术在中厚板宽度控制中的应用

Application of Width Micro-reducing Rolling Technique in Plate Width Control

在中厚板宽度控制中,为了提高不同展宽比条件下的产品矩形度,提出微减宽轧制技术.通过分析不同展宽比条件下的展宽变化规律及横向流动因子与展宽系数的关系,建立宽度形状函数,然后根据宽度形状函数计算出沿着长度方向上各个点的狗骨回展量,根据该回展量得出立辊变辊缝减宽轧制曲线.实际应用结果表明,应用该方法产品成材率有了明显提高,具有良好的应用价值.

In plate width control process, a micro-reducing rolling technique was put forward to improve the square degree on different broadening ratio of products. The width alteration rules on different broadening ratio as well as the relationship between lateral flow factors and broadening coefficient were analyzed. The width form functions were built, each point clog-bone recovery broadening along length direction was calculated, and the reducing width rolling curve with edger roll gradual gap based on this recovery broadening was obtained. Practical applications showed that the method proposed is available to improve greatly the product rolling yields and worthy to apply to plate rolling.