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die structure. Finite volume numerical simulation was used to analyze the extrusion process of a hollow profile with porthole die and the problem of non-uniform material flow was found. Optimization... in data transfer and larger computation time. These problems limit the usage of FEM in simulation of extrusion processes to solid profile or hollow profile with simple geometry and thicker wall. Some......
分类号:TG379 文献标志码:A Numerical simulation of temperature field during whole extrusion process of aluminum hollow... of the temperature field of hollow profile during the whole extrusion process, including the dividing and welding stages, was solved by mesh reconstruction technology of welding zone. Taking the porthole die......
Trans. Nonferrous Met. Soc. China 28(2018) 2094-2101 FE analysis of extrusion defect and optimization of metal flow in porthole die for complex hollow aluminium profile Jie YI1,2, Zhen-hu WANG1, Zhi... the defects of bottom concave appearing in the extrusion experiments of complex hollow aluminium profiles, a 3D finite element model for simulating steady-state porthole die extrusion process......
magnesium alloy wheel were introduced. A new extrusion method was investigated especially. Extrusion from hollow billet was proposed in order to enhance the strength of spoke portion and reduce the maximum... manufacturing 3.1 Extrusion from hollow billet The maximum load was chosen as the extrusion load during extrusion process. A new concept of hollow billet was proposed and a method of extrusion from......
simulation 1 Introduction Aluminum extrusion is one of the conventional metal forming processes, mostly used to produce long, straight semi-finished products in the forms of solid and hollow sections...J. Cent. South Univ. Technol. (2010) 17: 881-887 DOI: 10.1007/s11771-010-0571-8 Deformation simulation of low-temperature high-speed extrusion for 6063 Al alloy WANG Meng-jun(王孟君)1, 2, HE Zhao......
, 2004, 153/154: 366-373. [7] VALBERG H. Extrusion welding in aluminium extrusion [J]. Materials and Product Technology, 2002, 17(7): 497-556. [8] VALBERG H, LOEKEN T, HVAL M. The extrusion of hollow..., ZHOU J, LI G Y, ZHONG Z H. Numerical and experimental study on the extrusion through a porthole die to produce a hollow magnesium profile with longitudinal weld seams [J]. Materials and Design, 2008......
Extrusion process of lead-clad glass fiber compositesSUN Hong-fei(孙宏飞), FANG Wen-bin(房文斌),HAN Fei(韩 飞),HE Wen-xiong(贺文雄),WANG Er-de(王尔德)(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:The extrusion process of lead-clad glass fiber composites was studied. Lead-clad glass fiber composites with diameter ranging in 0.5-1.0mm were......
.ysxb.1004.0609.2021-39670 LIU Zhi-wen, LI Luo-xing, FU Chun-ming, et al. Defects formation mechanism and precision control of exit flow velocity in porthole die extrusion of hollow thin-walled aluminum profile[J... Fig. 1 Cross-section shape of hollow profile(a) and initial design scheme of extrusion porthole die(b) (Unit: mm) 图2 型材挤压试模典型缺陷 Fig. 2 Typical defects of profile in extrusion tests......
on the extrusion through a porthole die to produce a hollow magnesium profile with longitudinal weld seams [J]. Materials and Design, 2008, 29: 1190-1198. [14] LIU G, ZHOU J, DUSZCZYK J. FE analysis of metal... Process optimization diagram based on FEM simulation for extrusion of AZ31 profile LIU Gang(刘 钢)1, ZHOU Jie(周 捷)2, J DUSZCZYK2 1. School of Materials Science and Engineering, Harbin Institute......
homogeneously deformed materials. HWANG et al [13] investigated extrusion processes of magnesium alloy hollow helical tubes by a single-cylinder extrusion machine. However, the material is magnesium.... [13] HWANG Y M, CHANG C N. Hot extrusion of hollow helical tubes of magnesium alloys [J]. Procedia Engineering, 2014, 81: 2249-2254. DOI: 10.1016/j.proeng. 2014.10.316. [14] PARK Y B, YOON J H, YANG D......
