Investigation Of Tribological Performance Of Waste Lubricating Oil

Ab Rahman, Fateihah (2017) Investigation Of Tribological Performance Of Waste Lubricating Oil. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this study is to compare the lubricating oil before hazardous waste treatment and after hazardous waste treatment. Waste lubricant oil is harmful and dangerous to environment, human and animal. This study is to investigate tribological performance in terms of friction and wear. Four ball experiments were carried out to obtain results for coefficient of friction. After that, wear scars on balls were observed under inverted microscope to determine the wear scar diameter. All specifications used in this method were according to American Society for Testing and Materials (ASTM) 04172. Title for ASTM 04172 is Standard Test Method for Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method). Lubricant oil selected in this study is engine oil, gear oil, and coolant. Lubricant before hazardous waste treatment is waste lubricating oil which means oil that had been used and not yet be recycled or filtered. Lubricant oil after hazardous waste treatment is lubricating oil that had been recycled or filtered to remove particle contamination. Waste lubricating oil and recycle lubricating was collected at waste lubricating facility .Results shows that recycle lubricating oils have low wear scar diameter and low steady state coefficient of friction. For conclusion, recycle lubricating oil is acceptable to be used again as lubricating oil.

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