A New Less-Loading Extrusion Technology of Mg Alloy Tube Workpiece

DOI

10.2991/ifeea-15.2016.69How to use a DOI?

Keywords

Magnesium alloy,Backward extrusion,Hollow billet,Pre-deformation,Tube workpiece

Abstract

According to the exist problem in process&manufacturing of large-diameter magnesium alloy tube workpieces, pre-deformation of as-cast alloy and extrusion from hollow billet were developed. The hot compression experiment results show that pre-deformation of as-cast alloy is of advantage to decrease flow stress and to refine grain. The analytic results by slab method and numerical simulation show that forming force is decreased during extrusion from hollow billet because of the decrease of contact area and average positive stress on interface. The forming technology developed was validated and applied. The AZ80 alloy tube workpieces with outside diameter of 550,750mm and wall thickness of 35mm were extruded on 12.5MN and 30MN vertical hydraulic press respectively. The forming forces are reduced and the product performance are improved. It offers a new approach for forming large-diameter tube workpiece of magnesium alloy.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qiang Wang
AU  - Zhimin Zhang
AU  - Yong Xue
AU  - Jianmin Yu
PY  - 2016/01
DA  - 2016/01
TI  - A New Less-Loading Extrusion Technology of Mg Alloy Tube Workpiece
BT  - Proceedings of the 2015 2nd International Forum on Electrical Engineering and Automation (IFEEA 2015)
PB  - Atlantis Press
SP  - 326
EP  - 330
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeea-15.2016.69
DO  - 10.2991/ifeea-15.2016.69
ID  - Wang2016/01
ER  -