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Optimization of a Porthole Die for an Aluminum Profile Extrusion Based on Orthogonal Test Method

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Abstract:

In the present work, an attempt was made to solve the problem of distortions during the trial extrusion of an automobile shock absorption by means of orthogonal test method and HyperXtrude software based on ALE (Arbitrary Lagrangian Eulerian) method. According to orthogonal test arrangement, nine times simulations were carried out to study the effects of four significant parameters on distortions. Analysis shows that the influence of bearing length on the outlet velocity uniformity is the largest among the four selected factors. The material flow will be held up obviously with bearing length increasing because of the friction enlargement. But once the bearing length is beyond a critical value, its influence on flow resistance will decrease suddenly. The analysis also confirms that the baffle-block height and ram speed also have considerable influence on outlet velocity uniformity. And the impact of welding-chamber height on outlet velocity uniformity is slight and could be ignored. Finally, the die structure was optimized on the basis of the optimal combination of parameters obtained though the results and analysis of the simulation test. Extrudate with high quality were obtained.

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International Journal of Engineering Research in Africa Vol. 14 View Preview

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Periodical:

International Journal of Engineering Research in Africa (Volume 14)

Pages:

49-57

DOI:

https://doi.org/10.4028/www.scientific.net/JERA.14.49

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Online since:

March 2015

Authors:

Shu Mei Lou*, Yong Xiao Wang, Shuai Lu, Chun Jian Su

Keywords:

Aluminum Profile, Die Optimization, Extrusion, Orthogonal Test

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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