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conditions. The forming load is related to contact area and average positive stress on interface during forging process. Key words: Mg alloy; precision forging; as-cast billet prestraining; hollow... the forming technology and suitable process parameters that have to be applied. Hence, the precision forging process of magnesium alloys was investigated. As-cast billet prestraining and a new concept......
to study other effect of parameters on the forming quality of thin-walled tube NC precision bending. Key words: thin-walled tube; NC bending; precision forming; springback; simulation 1 Introduction...-walled tube NC precision bending, by which the value of springback can be controlled effectively and the precision forming process of tube bending can be realized. STELSON et al[5-9] have done a great......
so that precision bending without redundance can be realized. Key words: thin-walled tube; NC bending; precision forming; elongation; springback; simulation 1 Introduction Thin-walled aluminum alloy... (NC) rotary-draw tube bending technology (Fig.1) not only enables the forming process high technicalization, but also can satisfy the requirements of high precision, high efficiency, digitalization......
Finite element analysis and simulation for cold precision forging of a helical gearFENG Wei (冯玮)1, HUA Lin(华林) 1,2, HAN Xing-hui(韩星会)2(1. School of Materials Science and Engineering, Wuhan University...:To investigate the effects of billet geometry on the cold precision forging process of a helical gear, six different billet geometries were designed utilizing the relief-hole principle......
forming[13] and hydroforming[14, 15]. The solutions to the key technologies in the above study can not be employed to the blade precision forging. In this paper, the key technologies of backward tracing... tracing scheme of blade precision forging 2.2.1 Initial velocity field The blade precision forging is usually a hot forming process which depends on the strain-rate significantly, but the effect......
J. Cent. South Univ. Technol. (2009) 16: 0546-0551 DOI: 10.1007/s11771-009-0091-6 Die design for cold precision forging of bevel gear based on finite element method Jin Jun-song(金俊松)1, Xia... 430074, China; 2. Metal Forming Division, Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450052, China) ......
and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 28 July 2006; accepted 15 September 2006 Abstract: The isothermal precision forging was applied for the purpose of forming... process project and optimizing the process parameters for forging complex-shape aviation products. Key words: aluminum alloy; defect analysis; isothermal precision forging; FEM; metal forming 1......
J. Cent. South Univ. Technol. (2008) 15: 581-587 DOI: 10.1007/s11771-008-0109-5 Numerical simulation and experimental investigation of incremental sheet forming process HAN Fei(韩 飞), MO Jian... sheet forming (ISF) through both experimental and numerical approaches, a three-dimensional elasto-plastic finite element model (FEM) was developed to simulate the process and the simulated results were......
Optimization of press bend forming path of aircraft integral panel YAN Yu(阎 昱), WAN Min(万 敏), WANG Hai-bo(王海波), HUANG Lin(黄 霖) School of Mechanical Engineering and Automation, Beihang...; Abstract: In order to design the press bend forming path of aircraft integral panels, a novel optimization method was proposed, which......
Numerical simulation of splat formation dynamics in plasma spray forming FANG Jian-cheng(方建成)1, WANG Li(王莉)1, XU Wen-ji(徐文骥)2, ZHAO Zi-yu(赵紫玉)1 1. College of Mechanical Engineering and Automation, Huaqiao University, Quanzhou 362021, China; 2. Key Laboratory for Precision and Non-traditional Machining Technology, Ministry of Education, Dalian University of Technology, Dalian 116024, China......
