The paper discusses the necessity of applying double stepped backup rolls, and describes the methods for calculating the contact length and stepped depth and work roll crown.
论述了采用双阶梯支承辊的必要性。 提出了接触长度、阶梯深度及工作辊凸度的计算方法。
By the influence function method the influence of plate width, work roll radius, backup roll radius, work roll crown, backup roll radius and rolling force on gap setting were calculated.
根据影响函数法计算轧辊凸度对辊缝设定的影响，当保持工作辊和支承辊凸度不变，则轧制力与辊系弹性变形呈线性关系，工作辊和支承辊凸度的变化对直线的斜率几乎没有影响。
The application results show that work roll and backup roll designed with this method have good adaptability, and the plate crown and roll consumption have been reduced greatly.
经现场实践应用表明，采用该方法设计出的工作辊、支持辊辊型曲线适应性好，并大大地改善了板凸度和轧辊磨损情况。
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