Influence Of MQL Application On Surface Roughness, Cutting Force And Tool Wear For Milling Of Monel 400
-Monel 400 a Nickel-Copper based alloy widely used in field of marine engineering, acidic and alkaline
environment because of its excellent properties such as high strength and corrosion resistance. This experimental
investigation has been performed to study the influence of Minimum Quantity Lubrication (MQL) and cutting parameters on
surface roughness, cutting force and tool wear in milling of Monel 400. Milling was performed on 3-axis CNC machine.
Taguchi’s L9 orthogonal array was applied to design experiments containing cutting parameters and lubrication. Cutting
Speed of 75m/min, 100m/min, 125m/min, feed of 0.010 mm/tooth, 0.015 mm/tooth, 0.020mm/tooth, depth of cut of
0.20mm, 0.35mm, 0.50mm were selected as cutting parameters and Dry, Flooded, MQL were selected as lubricating
conditions. Optimal conditions for best surface finish, lowest cutting force and reduced tool wear were determined by
Taguchi analysis using “smaller the better approach”. A comparative study of tool life for flooded lubrication and MQL was
performed for a total cutting length of 1200mm. The study revealed that the use of minimum quantity lubrication is as
effective as using conventional cutting fluid, with an added advantage of the former being very environment friendly.
Keywords: Cutting force, Milling, Minimum quantity lubrication, Monel 400, Size effect, Surface roughness, Tool wear.