MATEC Web Conf.
Volume 80, 2016NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming Processes
|Number of page(s)||6|
|Section||IMS1: Engineering simulation of Bulk forming processes|
|Published online||24 October 2016|
The process parameters effect of ovality in cross wedge rolling for hollow valve without mandril
1 School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK
a Corresponding author: Jinping Liu E-mail:firstname.lastname@example.org
This paper presents the experimental and numerical results of the effect process parameters on ovality in cross wedge rolling (CWR) for hollow engine valve without mandrel. Numerical simulation model for ovality was established by means of the rigid-plastic finite element modeling (FEM) method for hollow engine valve. The experiments and numerical analyses suggest that the following parameters represent the best conditions for CWR of hollow engine valve: 30°-34° for the forming angle(α), 5°-7° for the stretching angle(β), 0.2-0.3mm for the mold void width(L), and 65%-70% for the area reduction(Ψ).
Key words: Hollow engine valve / Ovality / Cross wedge rolling / Experiment / Finite element modeling
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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