Transactions of Materials and Heat Treatment

Title：Optimization on roll pass based on roll forming bending angle distribution function

Authors： Wen Bo1 Yuan Hao1 Wang Zhi1 Cao Wenwu2 Wang Leigang1

Unit： 1. School of Mechanical Engineering Jiangsu University 2. Jiangsu Hengxin Silo Equipment Co. Ltd.

KeyWords： sheet forming roll forming bending angle explicit dynamics distribution function

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):46-53

Abstract：

For the problem of uneven forming load at each station for 50-type spiral steel silo forming equipment, the numerical simulation research on sheet forming was conducted based on explicit dynamics, and the relationship between equivalent stress at corner and forming load of each station was established. Then, the influence of pass spacing on the equivalent stress at the corner of sheet was explored. Based on the roll forming bending angle distribution function, the forming angle of each station for side Ⅲ was redistributed, and the schemes with different pass parameters were simulated and compared. The results show that the pass spacing has little effect on the equivalent stress at the corner, and the equivalent stress at the corner of side Ⅲ is the largest. When the variation index к=-0.4, the distribution of bending angle for side Ⅲ is more reasonable, and the equivalent stress at the corner in the numerical simulation is consistent with the change of forming load at each station in the prototype. Thus, the problem of uneven forming load for each station is effectively improved.

Funds：

国家自然科学基金资助项目（51775249）

文波（1997-），男，硕士研究生 E-mail：1500700472@qq.com 通信作者：袁浩（1975-），男，博士，副教授 E-mail：285817681@qq.com

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