標題：復雜截面空心鋁型材擠壓過程數值模擬
作者：徐晨1，陳文琳1，潘琪琛1，周曉遠1，阮祥明2 (1.合肥工業大學材料科學與工程學院，安徽合肥230009；2.安徽生信新材料股份有限公司，安徽宣城242000)
摘要：以某建筑用復雜截面空心鋁型材為研究對象，進行連續擠壓成形模設計。利用仿真模擬技術獲得擠壓過程中金屬的流動變形情況，根據分析結果，提出了改進工作帶及分流孔形狀尺寸的方案。模具結構經過改進后，型材出口處金屬流速均勻，數值模擬與試模結果吻合，為模具設計提供了理論指導，減少了試模成本。
關鍵詞：空心鋁型材；擠壓；數值模擬；模具結構
中圖分類號：TG376.1 文獻標識碼：B 文章編號：1001-2168（2020）06-0053-05
DOI：10.16787/j.cnki.1001-2168.dmi.2020.06.012
Numerical simulation of extrusion process for complex section hollow aluminum profile
XU Chen1, CHEN Wen-lin1, PAN Qi-chen1, ZHOU Xiao-yuan1, RUAN Xiang-ming2 (1.School of Material Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; 2.Anhui Shengxin New Materials Co., Ltd., Xuancheng, Anhui 242000, China)
Abstract: Taking a complex section hollow aluminum profile for buildings as the research object, the continuous extrusion die design was carried out. The instantaneous state of flow deformation of metal during extrusion was obtained by numerical simulation. According to the simulation results, the shape and size of the working belt and the split hole were improved. After the die structure improved, the metal flow rate at the exit of the profile was uniform. The numerical simulation was consistent with the test results, which provided theoretical guidance for die design and reduced the cost of debugging.
Key words: hollow aluminum profile; extrusion; numerical simulation; die structure