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Development of Castor Oil - Graphite Lubricants for Cold Extrusion of Aluminium Alloy


M. E. Ibrahim, U. B. Shehu, A. Raji, M. A. Hassan
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The study was conducted to develop castor oil graphite lubricants for cold extrusion of aluminium alloy and to investigate the effect of the developed lubricant on the extrusion pressure of aluminium alloy. Cold extrusion process at a constant extrusion ratio of 1.25:1 was used on 14mm diameter by 30mm long aluminium alloy billets. Experimental results showed that onset pressure ranges from 19.857MPa to 13.652MPa and final pressure ranges from 17.168MPa to 12.411MPa for formulated lubricants. Onset pressure of 21.718MPa and final pressure of 18.616MPa for unlubricated extrusion and onset pressure of 15.720MPa and final pressure of 13.238MPa for standard lubricant were obtained. Compared with unlubricated extrusions, lubrication ensured a drop in onset and final pressures by 5.998MPa and 5.378MPa, respectively for standard lubricant and a drop in onset and final pressures by 8.066MPa and 6.205MPa, respectively for the optimum formulated lubricant with 15% graphite and 85 % castor oil. The tribological properties of the formulated optimum lubricant were found to be 7.31, 171.2oC, 0.93g/cm3, 1.0546cSt, 0.939 and 2.294J/kgK for pH value, flash point, density, viscosity, specific gravity and specific heat capacity, respectively. The optimum formulated lubricant significantly reduced extrusion load and is considered satisfactory for cold extrusion of aluminium alloy.

M. E. Ibrahim, U. B. Shehu, A. Raji, M. A. Hassan

Castor Oil, Final Extrusion Pressure, Graphite, Lubricant, Onset Extrusion Pressure, Triobological Properties.

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Publication Details

Published in : Volume 1 | Issue 3 | May-June - 2015
Date of Publication Print ISSN Online ISSN
2015-06-25 2395-1990 2394-4099
Page(s) Manuscript Number   Publisher
302-308 IJSRSET151362   Technoscience Academy

Cite This Article

M. E. Ibrahim, U. B. Shehu, A. Raji, M. A. Hassan, "Development of Castor Oil - Graphite Lubricants for Cold Extrusion of Aluminium Alloy ", International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 1, Issue 3, pp.302-308, May-June-2015.
URL : http://ijsrset.com/IJSRSET151362.php




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