基于拉矫过程参数组合优化的带钢酸洗效率

doi:10.3901/JME.2019.02.051

机械工程学报 ›› 2019, Vol. 55 ›› Issue (2): 51-63.doi: 10.3901/JME.2019.02.051

基于拉矫过程参数组合优化的带钢酸洗效率

张赵宁, 张杰, 孔宁, 李洪波

北京科技大学机械工程学院北京 100083

收稿日期:2018-03-19 修回日期:2018-07-18 出版日期:2019-01-20 发布日期:2019-01-20
通讯作者: 孔宁(通信作者),男,1984年出生,博士,讲师。主要研究方向为轧制界面润滑、高温氧化腐蚀、机械力学行为与表面工程等。E-mail:kongning@ustb.edu.cn
作者简介:张赵宁,男,1988年出生,博士研究生。主要研究方向为热轧带钢氧化铁皮的控制。E-mail:zznsunny@163.com;张杰,男,1960年出生,博士,教授,博士研究生导师。主要研究方向为冶金机械工作行为与控制、塑性加工工艺与设备等。E-mail:zhangjie@ustb.edu.cn;李洪波,男,1982年出生,博士,副教授,硕士研究生导师。主要研究方向为冶金机械力学行为与控制等。E-mail:lihongbo@ustb.edu.cn
基金资助:
国家自然科学基金（51605026）和中央高校基本科研业务费专项资金（FRF-TP-15-082A1）资助项目

Strip Pickling Efficiency on the Basis of Combined Parameters Optimization during Tension Leveling Process

ZHANG Zhaoning, ZHANG Jie, KONG Ning, LI Hongbo

School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083

Received:2018-03-19 Revised:2018-07-18 Online:2019-01-20 Published:2019-01-20

摘要/Abstract

摘要： 为研究拉矫过程中张力与弯矩组合条件对热轧带钢酸洗效率的影响，以热轧电工钢板为例，采用弹塑性力学分析方法讨论张力、弯矩对曲率和伸长率的影响，建立带钢在拉弯矫直过程中，曲率、伸长率随张力/弯矩变化的数学模型。以曲率、伸长率为目标值，通过不同塑性弯曲状态下的静力平衡方程组，构建不同目标值下张力和弯矩的关系。采用电化学酸洗试验，分别研究不同曲率和伸长率对酸洗时间的影响，建立酸洗时间缩短率的预测模型。以酸洗时间缩短率为评价标准，分别研究不同曲率和伸长率对酸洗效率的影响，并计算出带钢在达到酸洗饱和点时的相对曲率和伸长率分别为2.33和1.51%。以不同目标曲率、伸长率时的张力-弯矩曲线作为左右边界，通过小张力-大弯矩条件下的相对张力临界值确定上下边界，计算出张力-弯矩调节域，研究结果可为酸洗前拉弯矫直过程参数组合优化提供理论依据。

关键词: 拉弯矫直, 曲率, 伸长率, 酸洗, 张力-弯矩调节域

Abstract: In order to study the combined effect of tension and bending moments conditions on the acid pickling process of hot rolled strips, an elastic-plastic mechanics analysis method is conducted to analyze the influence of tension and bending moment on the curvature and elongation. Taking hot-rolled electrical steel sheet as an example, a mathematical model is established on the consideration of the relationship between curvature/elongation and tension/bending moment. Regarding the target values of curvatures and elongations, the relationship between tension and bending moment is established through the static equilibrium equations under various plastic bending stages. Electrochemical pickling experiments is also applied to investigate the effects of different curvatures and elongations on the acid pickling time, and to build a prediction model about the pickling time shortening rate with curvature/elongation. On the basis of pickling time shortening rate, the pickling efficiency is assessed with different curvatures and elongations. The saturation points of curvature and elongation during the process of pickling are 2.33 and 1.51%, respectively. The tension-bending moment regulatory domain is obtained, which treats the tension-bending moment relation curves as the left and right boundaries with different curvature and elongation values. The upper and lower boundaries are determined by the critical tension values under small tension and large bending moment conditions. The proposed regulatory domain provides a theoretical guidance for the configuration optimization of a tension leveling before the acid pickling process of hot rolled strips.

Key words: acid pickling, curvature, elongation, tension leveling, tension-bending moment regulatory domain

中图分类号:

TG142

张赵宁, 张杰, 孔宁, 李洪波. 基于拉矫过程参数组合优化的带钢酸洗效率[J]. 机械工程学报, 2019, 55(2): 51-63.

ZHANG Zhaoning, ZHANG Jie, KONG Ning, LI Hongbo. Strip Pickling Efficiency on the Basis of Combined Parameters Optimization during Tension Leveling Process[J]. Journal of Mechanical Engineering, 2019, 55(2): 51-63.

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基于拉矫过程参数组合优化的带钢酸洗效率

Strip Pickling Efficiency on the Basis of Combined Parameters Optimization during Tension Leveling Process

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