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the hot granule medium pressure forming (HGMF) technology [14]. It is a new technology which uses the heat resisting granule medium, instead of the liquid, gas or viscous medium in existing flexible...J. Cent. South Univ. (2016) 23: 765-777 DOI: 10.1007/s11771-016-3122-0 Research on technological parameters of pressure forming with hot granule medium on AA7075 sheet DONG Guo-jiang(董国疆)1, ZHAO......
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tests were performed to investigate the surface topography evolvement of hot-dip galvanized(GI) and galvannealed(GA) steels and the effects of die hardness on sheet metal forming(SMF). Experimental... Surface topography evolvement of galvanized steels in sheet metal forming HOU Ying-ke(侯英岢)1, YU Zhong-qi(于忠奇)1, ZHANG Wei-gang(张卫刚)1, JIANG Hao-min(蒋浩民)2, LIN Zhong-qin(林忠钦)1 1......
on sheet metal is a kind of advanced flexible forming technique to realize one-time forming of thin-walled and complex parts on light alloy sheet. The existing flexible-die hot forming techniques on sheet metal include warm hydro-mechanical deep drawing (WHDD), quick plastic forming (QPF) with gas as medium, warm viscous pressure forming (WVPF) and hot granule medium pressure forming (HGMF). WHDD......
evolution in metal forming has been paid more attention to in recent years[1-6]. In order to make an accurate computation for microstructure in hot forming, many researchers have developed diverse... dislocations cannot cross-slip and recombine, and k20 is a proportional constant. The multiplicative factor () is used as a fitting constant. In the hot forming of metal, the dislocation density ρ is so......
: semi-solid processing; theory; production; forming 1 Introduction As a kind of new near net shape metal processing technology, semi solid processing (SSP) has the brightest future in the 21st... Yong-lin, MAO Wei-ming, HU Zhuang-lin. Theory and technology of metal semi solid process [M]. Beijing: Science Press, 2004. (in Chinese) [2] ZHAO Zu-de, LUO Shou-jing. Semi solid forming technology......
Article ID: 1003-6326(2005)05-0985-08 Melt metal sheet breaking mechanism of close-coupled gas atomization OUYANG Hong-wu(欧阳鸿武), HUANG Bai-yun(黄伯云), CHEN Xin(陈 欣), YU Wen-tao(余文焘) (State... melt droplets by the impact of high velocity gas stream and solidified into metal particles. However, the liquid melt sheet breaking mechanism has not been fully understood. So the experimental research......
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workpiece of titanium alloy. Different from other metal forming technique[3-7], the elastic-plastic deformation of material is dominant, the ‘vacuum hot bulge forming’ deformation takes place at low... Effect of temperature on vacuum hot bulge forming of BT20 titanium alloy cylindrical workpiece WANG Ming-wei(王明伟)1, 2, ZHANG Li-wen(张立文)1, 2, PEI Ji-bin(裴继斌)1, 2, LI Chen-hui(李辰辉)3, ZHANG Fan......
and stress. Key words: plastic forming; hot forming; flange joint; integrated steel pipe; finite element analysis 1 Introduction Flange joints have a wide application in industry, such as chemical... from the ends of pipe. A method of two-step hot forming process to form the fitting body from the pipe is developed in this work. Firstly, one fitting body on the end is formed by preforming and finish......
