Transactions of Materials and Heat Treatment

Title：Study on forming force of cylindrical part in backward extrusion

Authors： Ren Jie Wang Qiang Ji Cuibin Liu Tao

Unit： North University of China Taiyuan Military Representative Office of Armored Military Representative Bureau

KeyWords： slip line method hollow billet backward extrusion

ClassificationCode：TG376

year,vol(issue):pagenumber：2015,40(11):122-126

Abstract：

The metal flows under the new technology（backward extrusion of hollow billets）and the traditional process（backward extrusion of solid billets）of backward extrusion cylindrical part were analyzed respectively by slip line method, and the slip line field that was compatible with the metal flow was put forward. Based on the above, the formulas of forming forces under two different processes were deduced. Two different schemes were also simulated by Deform-3D software. Comparing the simulated results with the calculated results, the error is about 2%. By comparison, the results show that the deforming force under backward extrusion of hollow billet can be markedly reduced, and it relates to the diameter of inner hole. They are confirmed by forming aluminum alloy wheels using the above two different forming processes.

Funds：

山西省自然科学基金资助项目（2013011022-5）

任杰（1990-），男，硕士研究生

Reference：

［1］谢建新.金属挤压技术的发展现状与趋势[J].中国材料进展，2013，32（5）：257-263.Xie J X. Current situation and development trends of metals extrusion technology[J].Material China, 2013，32（5）:257-263.
［2］Avitzur B. Handbook of Metal-forming Processes[M].New York：John Wiley & Sons Incorporated，1983.
［3］王强，张治民.空心坯料反挤压省力成形方法及应用研究[J].塑性工程学报，2010，17（3）:22-26.Wang Q, Zhang Z M. Investigation on backward extrusion of hollow billet with force saving [J].Journal of Plasticity Engineering, 2010，17（3）:22-26.
［4］张新宇.空心件反挤压压力的计算[J].大连铁道学院学报，1987，（4）:55-60.Zhang X Y.Calculation of hollow billet backward extrusion pressure [J].Journal of Dalian Railway Institute, 1987，（4）:55-60.
［5］秦小琼，刘德学.杯形件反挤压变形力的滑移线场数值分析解[J].山东大学学报:工学版，2011，41（6）:66-69.Qin X Q,Liu D X.Numerical analysis of deforming force for the backward extrusion process based on slip-line field theory[J]. Journal of Shandong University：Engineering Science, 2011，41（6）:66-69.
［6］Shatermashhadi V，Manafi B. Development of a novel method for the backward extrusion[J].Materials and Design，2014，62：361-366.
［7］杨雄.用滑移线法解正挤压实心件的准确方法[J].长江大学学报：自然科学版，2006，3（2）：89-90.Yang X. Accurate method of extrusion solid billet by slip line method [J]. Journal of Yangtze University：Natural Science Edition, 2006,3（2）：89-90.
［8］吴诗惇.挤压理论[M].北京：国防工业出版社，1994.Wu S D. Squeeze Theory[M].Beijing：National Defense Industry Press, 1994.
［9］郭向杨，王鹏程，张士宏，等.热反挤压过程中金属不稳定流动状态的研究[J].锻压技术，2012，37（3）：62-66.Guo X Y，Wang P C，Zhang S H，et al. Research on unstable flow state of metal in hot backward extrusion[J].Forging & Stamping Technology，2012，37（3）：62-66.
［10］李新凯，张治民，张春雨，等.反挤压直筒的省力研究[J].热加工工艺，2012，41（1）:92-94.Li X K, Zhang Z M, Zhang C Y ,et al. Research on force saving of anti-extrusion of straight tube [J].Hot Working Technology, 2012，41（1）:92-94.
［11］康凤，杨鄂川，陈强，等.一种大型车用铝合金轮辋的等温成形工艺[J].特种铸造及有色合金，2014，34（9）：907-908.Kang F，Yang E C，Chen Q，et al. Isothermal-forging of the aluminum alloy wheel rim[J].Special Casting & Nonferrous Alloys, 2014，34（9）：907-908.
［12］张治民，王强，路光，等.重型车辆铝合金轮辋挤压成形技术及应用[J].机械工程学报，2012，48（18）：55-59.Zhang Z M, Wang Q, Lu G, et al. Research on extrusion technology and application for aluminum alloy wheel rim of heavy vehicles[J].Journal of Mechanical Engineering, 2012，48（18）：55-59.
［13］Sun W Z,Chen Y H,Wu L E,et al.Phase composition and luminescent properties of strontium aluminate long persistence phosphor synthesized by combustion synthesis method with different Sr/Al ratios[J].Rare Metals,2013,32(4):414-419.

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