锻压技术

面向误差补偿的热轧板带变形曲率积分重构分析

英文标题：Integral reconstruction analysis on deformation curvature for hot-rolled strip with error compensation

作者：罗彩玉1 刘明2

分类号：TG156

出版年,卷(期):页码：2023,48(3):139-143

摘要：

为深入分析热轧板带的变形重构过程，通过分布式方法对热轧板带的表面区域实施检测，确定采用曲率积分递推方式形成的误差补偿重构算法。然后对热轧板带开展模型仿真与变形分析，以促进重构性能的显著提升。根据热轧板带表面的曲率数据判断分布应变特征，计算得到热轧板带的变形数据，形成多条曲线并进行插值，从而对整体热轧板带完成变形重构的过程。结果表明: 逐渐提高载荷时，形成了更大的重构方差，使最大误差降低。与切角递推算法相比，曲率积分递推算法具有更小的误差和耗时，并可以获得较切角递推算法更优的重构性能。研究结果对控制热轧板带的变形程度具有很好的效果，对提高板带轧制过程中的成形精度以及控制稳定性具有很好的实践价值。

In order to analyze the deformation and reconstruction process of hot-rolled strip deeply, the surface area of hot-rolled strip was inspected by the distributed method, and the error compensation reconstruction algorithm formed by curvature integral recursive method was determined. Then, the model simulation and deformation analysis of hot rolled strip were carried out to promote the significant improvement of reconstruction performance. According to the curvature data of the surface of hot-rolled strip, the strain distribution characteristics were judged, and the deformation data of hot-rolled strip were calculated. Furthermore, the multiple curves were formed and interpolated, so as to complete the deformation reconstruction process of the whole hot-rolled strip. The results show that with the increasing of load, the larger reconstruction variance is formed, and the maximum error decreases. Compared with the tangent angle recursive algorithm, the curvature integral recurision algorithm has smaller error and time consumption and obtains better reconstruction performance comparied with the tangential recurision method. Thus, the research result has a good effect on controlling the deformation degree of hot-rolled strips and has good practical value on improving the precision and stability control of strips in rolling process.

基金项目：

河北省自然科学基金资助项目(B2016209059)

作者简介：罗彩玉(1980-)，女，硕士，副教授 E-mail：a15134457133@163.com

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