Transactions of Materials and Heat Treatment

Title：Numerical simulation and experimental study on correction process for large complex multi-cavity extruded parts

Authors： Wang Qingfeng Sun Lei Chu Guannan

Unit： School of Materials Science and Engineering Harbin Institute of Technology(Weihai)

KeyWords： hot extruded parts multi-cavity profiles extrusion correction extrusion amount shape accuracy

ClassificationCode：TG394

year,vol(issue):pagenumber：2023,48(5):282-286

Abstract：

A new axial hydroforming extrusion correction process was proposed to reduce the deformation of large complex multi-cavity profiles during hot extrusion production process, and the core of the process was to improve the shape accuracy of part section through axial compression deformation supported by internal pressure. Then, the feasibility of the process on 6005-T6 aluminum alloy complex multi-cavity extruded parts was verified by finite element simulations and experimental studies. The results show that the width of the profile increases after compression deformation under the support of internal pressure. The key dimensions of the profiles obtained by the axial hydroforming extrusion correction process are basically consistent with the target values, and the sectional shape basically fits the designed contour, which meets the requirements of subsequent tooling after machining. Thus, the axial hydroforming extrusion correction process is feasible in reducing the deformation of complex multi-cavity hot extruded profiles and improving the shape accuracy.

Funds：

山东省重大科技创新工程(2020CXGC010303); 国家自然科学基金重点项目(U1937205); 山东省重大科技创新工程(2019TSLH0103)

作者简介：王清峰（1995-），男，博士研究生,E-mail：wqf1826@163.com;通信作者：初冠南 (1979-)，男，博士，教授,E-mail：chuguannan@hit.edu.cn

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