The occurrence of tool wear in machining is a natural phenomenon that cause failure. The deformation during cutting at the interface between the tool face and workpiece tends to generate high cutting temperature. The application of flood coolant to reduce the friction at the tool-work piece may create several environmental problems. The introduction of Minimum Quantity Lubrication (MQL) as an alternative technique which is the process of pulverizing a very small amount of oil (< 30ml/h) can be regarded as replacement of dry machining while it may also be considered as an alternative to flood cooling. The effect of vegetable oil lubricant and cutting speed on tool wear and surface integrity were the research scope. Three machine speed; 120, 141, and 174 m/min were used in the experimental setup on mild steel and carbon steel on work material using cemented carbide tools. The result of surface roughness and tool wear using canola oil mixing with 2 weight percent (wt%) of Zinc-dialkyl-dithio-phosphate (ZDDP) were compared against synthetic oil coolant. Comparison results show that canola oil mix can perform better compare to the synthetic oil coolant in term of surface finish. From tool wear perspective, canola oil mix show 26.5% smaller area compare to the synthetic oil coolant.
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