Transactions of Materials and Heat Treatment

Title：Research status on extrusion with changing friction mode

Authors： Yang Cheng Zhang Minna Tang Danni Zhang Zhe Zhao Shengdun

Unit： Xi'an University of Architecture and Technology Xi'an Jiaotong University

KeyWords： hydrostatic extrusion effective friction vibration assisted extrusion cyclic torsional assisted extrusion rolling friction

ClassificationCode：TG301

year,vol(issue):pagenumber：2015,40(5):1-6

Abstract：

The friction between die and billet in extrusion will increase the forming load significantly, which results in poor precision and low die life. Therefore, it is critical to reduce friction and negative influences on metal forming. The approaches to realize extrusion by changing friction types were analyzed including hydrostatic extrusion, active friction of extrusion cylinder, vibration assisted extrusion, cyclic torsional assisted extrusion and changing slide friction to roll friction. The results show that fluid lubrication, reducing interface friction factor, changing friction vector direction and rolling friction can effectively reduce the negative influences on extrusion.

Funds：

国家04重大科技专项（2011ZX04016-081-03）；陕西省自然科学基金资助项目（2012JM7019）；大学生创新创业项目 (201310703038)

杨程（1976-），男，博士，副教授

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