模具技术Issue(2)：43-52,10.
Q235平椭圆管与矩形管弯曲成型截面质量控制及工艺参数优化研究
Research on quality control and process parameters optimization of Q235 flat elliptical and rectangular tube bending forming section
摘要
Abstract
The cross-section quality control and process parameter optimization of Q235 flat elliptical tube in the bending process were studied in order to reduce the cross-section distortion and wall thickness thinning and improve the bending quality.In this paper,the finite element simulation method is used to build a three-dimensional finite element model of Q235 flat oval tube by DYNAFORM software to simulate the bending process under different process parameters(including core tube gap,number of cores,bending radius,etc.).The specific steps include setting the billet material parameters,building the simulation model,defining the simulation conditions,dividing the section along the bending path to measure the distance between the top plate and the bottom plate,and calculating the mid plane height reduction rate η and the local wall thickness reduction rate Δ.It is found that compared with the rectangular tube,the flat elliptical tube shows a smoother cross-section shape and a more uniform stress distribution in the bending process.By optimizing the process parameters,such as increasing the number of cores,selecting the appropriate bending radius and controlling the core tube gap,the flat elliptical tube can effectively reduce the cross-section distortion and wall thickness thinning.Compared with the rectangular tube,the section distortion of the flat elliptical tube is lower under the same process parameters,and the wall thickness thinning phenomenon is less obvious.This study shows that Q235 flat elliptical tube has better section quality characteristics in the bending process.By reasonably optimizing the process parameters,the bending quality of the pipe can be significantly improved,which provides a theoretical basis and practical guidance for the process improvement in the actual production.关键词
Q235平椭圆管/弯曲成型/截面畸变/工艺参数优化/有限元仿真Key words
Q235 flat oval tube/bending forming/section distortion/optimization of process parameters/finite element simulation分类
金属材料引用本文复制引用
王翠竹..Q235平椭圆管与矩形管弯曲成型截面质量控制及工艺参数优化研究[J].模具技术,2025,(2):43-52,10.基金项目
2024四川信息职业技术学院-Q235和Q345新型管弯曲成型截面畸变及轻量化的研究(编号:2024C14). （编号:2024C14）
