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Tech, 2004, 151(1/3): 289-293. [13] OGAWA N, SHIOMI M, OSAKADA K. Forming limit of magnesium alloy at elevated temperatures for precision forging [J]. International Journal of Machine Tools &... to reduce the maximum forming load. A scheme of isothermal forming and the use of combined female dies were adopted, which can improve the die filling capacity and ensure the manufacture of high quality......
J. Cent. South Univ. (2018) 25: 1475-1488 DOI: https://doi.org/10.1007/s11771-018-3841-5 Optimized algorithm in mine production planning, mined material destination, and ultimate pit limit Rahimi... and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: An integral connection exists among the mine production planning, the mined material destination, and the ultimate pit limit (UPL......
Theory and application research development of semi-solid forming in China LUO Shou-jing(罗守靖)1, W. C. KEUNG(姜永正)2, KANG Yong-lin(康永林)3 1. School of Materials Science and Engineering, Harbin... recognition, application fields exploiting, developing of billets (slurries) preparation technologies with low cost and special equipments. The prospect of semi-solid forming development path in China......
). The relationship between LDH and forming temperature are shown in Fig.3. For isothermal forming, the fracture occurs at dome center and is independent of forming temperature. But the limit dome height... Influence of viscous medium temperature distribution on sheet fracture in viscous pressure forming at warm temperature LIU Jian-guang(刘建光)1, WANG Zhong-jin(王忠金)1, ZHANG Xin(张鑫)2, LI Yi(李毅)1 1......
Trans. Nonferrous Met. Soc. China 22(2012) 564-570 Influence of forming process on three-dimensional morphology of TiB2 particles in Al-Ti-B alloys LI Peng-ting, LI Yun-guo, NIE Jin-feng, LIU Xiang... Abstract: A series of Al-Ti-B master alloys were prepared by different preparation routes, and the TiB2 particles in the master alloys were extracted and analyzed. It is found that the forming process......
Roof collapse of shallow tunnels with limit analysis methodYANG Xiao-li(杨小礼), LONG Ze-xiang(龙泽祥) (School of Civil Engineering, Central South University, Changsha 410075, China)Abstract:A new failure mechanism is proposed to analyze the roof collapse based on nonlinear failure criterion. Limit analysis approach and variational principle are used to obtain analytical findings concerning......
Processing limit maps for the stable deformation of dieless drawingYong He1), Xue-feng Liu1,2), Jian-xin Xie1,2), and Hong-gang Zhang1) 1) Key Laboratory for Advanced Materials Processing (MOE... of the deformation region profile decreased. The processing limit map of sta-ble deformation exhibited a closed curve and the unstable deformation consisted of wire breakage and diameter fluctuations.关键词:......
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, the limit deformation of tube part can be increased by several times. Meanwhile, the principle of viscous inner and outer pressure forming was provided, and key problems during the forming process...Viscous Inner and Outer Pressure Forming Method of Thin-walled Tube and Its Application高铁军1,LIU Yang1,WANG Zhongjin21. Faculty of Aerospace Engineering, Shenyang Aerospace University2. School......
