|
For the hollow aluminum profile with corner and long cantilever, the extrusion process was simulated by analysis software HyperXtrude, and the influences of technological parameters such as extrusion speed, billet preheating temperature, container preheating temperature, die preheating temperature, billet diameter, billet length etc. on the standard speed deviation(SDV) and the standard temperature deviation(SDT) at the exit section of the profile were researched by the orthogonal test. The results indicate that the optimal scheme are obtained with extrusion speed of 1 mm·s-1, billet preheating temperature of 440 ℃, container preheating temperature of 420 ℃, die preheating temperature of 400 ℃, billet diameter of Φ150 mm, billet length of 450 mm, and the corresponding SDV of 1.3680 and SDT of 1.9130 by analyzing range and simulating again to ensure to get the extrusive profile with high comprehensive quality. Then, the influences of extrusion speed on SDV and billet preheating temperature on SDT are as high as 67.50% and 76.41% respectively by analyzing variance, and it is shown quantitatively that extrusion speed and billet preheating temperature are the main process parameters effecting the appearance quality and the internal organization of profile respectively. At last, the qualified products are extruded at factory, and the reliability of the optimal scheme is verified.
|
|
［1］张继祥, 张克龙, 文辉,等. 6016铝合金挤压成形规律及工艺优化研究[J]. 上海金属, 2013, 35(4):35-39.Zhang J X, Zhang K L, Wen H, et al. Research on the extrusion forming rule and process plan optimization of 6016 aluminum alloy[J]. Shanghai Metals, 2013, 35(4):35-39.
［2］钟建华, 袁志燕, 刘艳霞,等. 挤压工艺参数对挤压过程影响规律的仿真模拟研究[J]. 有色金属科学与工程, 2015，(3):45-50.Zhong J H, Yuan Z Y, Liu Y X, et al. Numerical simulation of effects of extrusion process parameters on extrusion process [J]. Nonferrous Metals Science and Engineering, 2015，(3):45-50.
［3］赵斌斌, 汤宏群, 湛永钟,等. 半空心铝型材挤压过程数值模拟与工艺参数优化[J]. 锻压技术, 2014, 39(9):131-136.Zhao B B, Tang H Q, Zhan Y Z, et al. Numerical simulation of the extrusion process and optimization of the technological parameters for half-hollow aluminum profile[J]. Forging & Stamping Technology, 2014, 39(9):131-136.
［4］纵荣荣, 郝秋红, 李俊鹏,等. 轨道车辆用超宽幅薄壁铝型材的挤压速度仿真优化[J]. 锻压技术, 2015, 40(7):141-145.Zong R R, Hao Q H, Li J P, et al. Simulation optimization on extrusion speed for extra-wide aluminum profile with thin-walls used for railway vehicles [J]. Forging & Stamping Technology, 2015, 40(7):141-145.
［5］徐宁, 黄东男, 李有来, 等. 复杂断面空心型材的双级分流模挤压过程模拟分析[J]. 锻压技术, 2016, 41(12):62-66.Xu N, Huang D N, Li Y L, et al. Simulation analysis on two-stage porthole dies extrusion for complicated hollow section profile[J]. Forging & Stamping Technology, 2016, 41(12):62-66.
［6］雷步芳, 岳峰, 李永堂, 等. 铝及铝合金挤压工艺及设备[M].北京：国防工业出版社,2014.Lei B F, Yue F, Li Y T, et al. Extrusion Process and Equipment for Aluminum and Its Alloys [M]. Beijing：National Defense Industry Press, 2014.
［7］李云雁, 胡传荣. 试验设计与数据处理[M]. 2版.北京:化学工业出版社,2008.Li Y Y, Hu C R. Experiment Design and Data Processing [M]. Second Edition. Beijing：Chemical Industry Press, 2008.
［8］喻俊荃, 赵国群, 张存生,等. 阻流块对薄壁空心铝型材挤压过程材料流速的影响[J]. 机械工程学报, 2012, 48(16):52-58.Yu J Q, Zhao G Q, Zhang C S, et al. Effect of baffle-block on material flow velocity during thin-walled hollow aluminum profile extrusion [J]. Journal of Mechanical Engineering, 2012, 48(16):52-58.
［9］Altair Engineering. Altair HyperXtrude 13.0 User Guide [Z].2014.
［10］关业武. 6063合金型材力学性能的影响因素及改善对策[J]. 资源再生, 2004,(9):13-14.Guan Y W. Influence factors of mechanical properties for 6063 alloy profiles and its Improvement measures[J]. Resource Recycling, 2004(9):13-14.
|
Copyright Forging & Stamping Technology.All rights reserved