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: The possibility of the electric-hydraulic chattering technology and its application in the cold extrusion were presented. The conventional and electric-hydraulic chattering assisted backward extrusion processes... with that produced by the conventional extrusion method. Key words: 6061aluminum alloy; conventional backward extrusion; electric-hydraulic chattering assisted backward extrusion; finite element analysis......
Trans. Nonferrous Met. Soc. China 20(2010) s906-s910 Rheological behavior, microstructure and hardness of A356 aluminum alloy in semisolid state using backward extrusion process S... alloy in the semi-solid state was investigated using backward extrusion process. Experiments were performed at 5 temperatures and 4 different wall thicknesses. Viscosities were determined using the force......
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state were investigated. Numerical simulation and backward extrusion were adopted to study the preparation of cup shells. The results show that the relative density of the wall is the lowest in samples...; inhomogeneity; semi-solid state; backward extrusion; numerical simulation 1 Introduction In recent years, aluminum alloys are widely used in automotive and aerospace industries because......
that the extrusion forces of Cu-0.75Cr alloy under different backward extrusion process conditions can be predicted by this model. The results show that not only the prediction accuracy and treatment speed...%. Key words: Cu-0.75Cr alloy; backward extrusion process; extrusion force; prediction; least square support vector machine ......
Trans. Nonferrous Met. Soc. China 26(2016) 2170-2178 Determination of processing power and optimum billet radius of modified backward extrusion by upper bound approach S. H. HOSSEINI, K. ABRINIA School of Mechanical Engineering, College of Engineering, University of Tehran, 16846-13114, Tehran, Iran Received 8 August 2015; accepted 31 January 2016 Abstract: A recently developed backward extrusion......
extrusion, backward extrusion, and lateral extrusion by a methodof finite element simulation. Then on the base of synthesizing and correcting tradi-tional friction models, a new general friction...RESEARCH ON THE SELECTION OF FRICTION MODELS IN THE FINITE ELEMENT SIMULATION OF WARM EXTRUSION Z.L.Zhang1,H.S.Xiao1,X.B.Lin1 (1.National Die and Mold CAD Engineering Research Center, Shanghai Jiao......
Structural and magnetic properties of backward extruded Nd–Fe–B ring magnets made by different punch chamfer radiusRen-Quan Wang,Biao Chen,Jun Li,Ying Liu,Qing ZhengSchool of Materials Science and Engineering,Sichuan University摘 要:Radially oriented Nd–Fe–B ring magnets were prepared by backward extrusion of MQ-C powder. The punch chamfer radius has......
Backward tracing simulation of precision forging process for blade based on 3D FEM GAO Tao(高 涛)1, YANG He(杨 合)1, LIU Yu-li(刘郁丽)1, 2 1. College of Materials Science and Engineering... be obtained from a given final shape by using backward tracing scheme based on FEM. The key technologies of backward tracing scheme based on 3D rigid-viscoplastic FEM were explored, and some valid algorithms......
