Optimization of hot extrusion process parameters for 7075 aluminum alloy rims based on HyperXtrude

• Published in: Journal of materials research and technology Vol. 25; pp. 4913 - 4928
• Main Authors: Ji, Hongchao, Qiao, Jiahao, Kang, Naizheng, Wang, Xiuli, Huang, Jianghua
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2023; Elsevier
• Subjects: 7075 aluminum alloy; Gray relational method; Hot extrusion; HyperXtrude; Process parameters; Profiles; Hot extrusion; Gray relational method; HyperXtrude; 7075 aluminum alloy; Profiles; Process parameters
• ISSN: 2238-7854
• DOI: 10.1016/j.jmrt.2023.06.239

Aluminum alloy has the characteristics of light weight, high strength, corrosion resistance, easy forming, etc., and is widely used in manufacturing industry. The extrusion speed of aluminum alloy rim is not uniform, which affects the mechanical properties of the product. In order to solve these 1problems, the finite element analysis model of hot extrusion of aluminum alloy profiles was established in HyperXtrude software. The influences of different bar diameters, hot extrusion velocity, bar preheating temperature, die temperature and extrusion cylinder temperature on velocity difference and maximum extrusion pressure at the exit were analyzed. The results show that the designed hot extrusion rim die meets the requirements of strength and deformation, and the best extrusion process parameters of 7075 aluminum alloy rim profiles in improving profile quality and reducing energy consumption are obtained by Taguchi test gray correlation method.