Effects of Multi-Step Welding Chamber on Extrusion Product Quality and Die Strength

Abstract:

The shape of welding chamber is a key parameter in flat porthole die extrusion process, which influences product quality and die life-span directly. In this paper, by means of numerical simulation of the extrusion process for an aluminum hollow profile, the effects of multi-step welding chamber on metal flow and die strength have been investigate. The numerical results revealed that the multi-step welding chamber was effective to balance metal flow in the die cavity. In addition, with an increasing step of welding chamber, the maximum stress and deflection of the lower die decreased, while the deflection of the mandrel kept almost unchanged and the maximum stress of upper die increased.

• Periodical: Applied Mechanics and Materials (Volumes 44-47)
• Pages: 311-315
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.44-47.311
• Online since: December 2010
• Authors: Hao Chen, Guo Qun Zhao, Cun Sheng Zhang, Dao Sheng Wen
• Keywords: Aluminum Profile Extrusion, HyperXtrude, Multi-Step Welding Chamber

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