Investigate surface roughness of aluminium alloy 2024 under wet and dry conditions

Azhar, Anis Afuza (2015) Investigate surface roughness of aluminium alloy 2024 under wet and dry conditions. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This thesis, by experimental and investigation, examines the surface integrity of aluminium alloy 2024 under wet and dry conditions. This study tries to explore the feasibility of cutting condition to machine Aluminium 2024. The dry and wet condition will be compared based on the surface integrity. For each condition the Aluminium will be machined at different cutting speed with constant feed rate and depth of cut. The problem arises when the cutting parameter is not applied correctly while doing machining. Dry condition will produces quick tool wear due to high friction at the cutting interfacewet condition will produces longer tool life due to lows friction and cooler environment. However using coolant will provide hazard to environment.Which techniques are better to machine aluminium alloy 2024 whether at dry or wet condition.This study will investigate the optimum cutting speed for machining Aluminium 2024 in wet and dry condition to produce the best surface finish. For the machine and equipment used in this experiment are conventional lathe machine, surface roughness tester, power band saw, stereo microscopes and scanning electron microscopes (SEM). This study discussed about preparation for cutting tool and workpiece before running the experiment. The result shows the cutting fluid did not give a big impact on the surface roughness during machining and the surface roughness decrease with the increasing of cutting speed for both cutting condition. This is because during shearing action, the temperature will increase and it will provide more easily shearing action.This study help to understanding the effect of cutting speed on surface in dry and wet cutting condition ecspecially when compared between low and high cutting speeds.

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