论文部分内容阅读
采用ABAQUS有限元软件对鞍钢ASP1700热轧带钢在层流冷却过程中的热应力变化进行了数值模拟,分析了带钢在层流冷却中板形变化的趋势。分析结果表明,带钢边部存在的温降导致带钢中间受拉应力,边部受压应力,带钢平坦度有向着边浪发展的趋势,与生产中观测到的结果一致。以所得结论为依据,提出了微中浪轧制的板形控制策略,以补偿热轧带钢层流冷却过程对带钢平坦度带来的影响,并在鞍钢ASP1700热轧生产线上应用,通过对带钢冷却前后板形状况的跟踪观测,发现微中浪轧制板形补偿控制策略效果非常明显。
The thermal stress of ASP1700 hot rolled strip in Ansteel during laminar cooling was numerically simulated by ABAQUS finite element software. The trend of strip shape in laminar cooling was analyzed. The analysis results show that the temperature drop at the edge of strip causes the tensile stress in the middle of the strip, the compressive stress on the edge and the strip flatness to develop towards the side waves, which is consistent with the observed results in the production. On the basis of the conclusions obtained, a plate-shaped control strategy for micro-medium wave rolling is proposed to compensate for the influence of the laminar cooling of the hot strip on the flatness of the strip and is applied to the ASP1700 hot rolling production line in Ansteel. After tracking and observing the shape of the strip before and after cooling, we found that the effect of the strip shape compensation control strategy is very obvious.