Universiti Teknologi Malaysia Institutional Repository

A new method to maintain lubricant layer in extrusion process

A., Norhayati and Wira, J. Y. and Mohd. Zin, H. and Syahrullail, Syahrul (2012) A new method to maintain lubricant layer in extrusion process. AIP Conference Proceedings, 1440 . pp. 894-899. ISSN 0094-243X

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Official URL: http://dx.doi.org/10.1063/1.4704301

Abstract

The present research concerns on the study of the effects of micro-pits arrays formed on the taper die surface. The micro-pits are diamond in shape. The evaluation of micro-pits was carried out by cold forward plane strain extrusion experiments. The experimental results were compared with the results obtained from the plane strain extrusion experimental works with taper die without micro-pits. The lubricant used in this experimental works is additive free paraffinic mineral oil. The experimental results are focusing on the extrusion load, billet surface roughness and grid pattern observation. From the result, the existence of the micro-pits influenced the extrusion load. At the same time, the micro-pits array affected the work piece surface roughness after the extrusion process. The lubricant viscosity also manipulates the quality of work piece after the experiments. From this works, we could conclude that the micro-pits formed on the taper die would create different frictional constraint compared to those without the micro-pits.

Item Type:Article
Uncontrolled Keywords:AIP
Subjects:T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions:Mechanical Engineering
ID Code:46501
Deposited By: Haliza Zainal
Deposited On:22 Jun 2015 13:56
Last Modified:12 Sep 2017 12:24

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