Aim: The objective of this work is to compare the surface roughness of machined component of super duplex steel (SDS) using a novel minimum quantity lubrication (NMQL) technique and compare the surface roughness of the machined component by dry machining process.
Materials and Methods: Two set of groups were selected for the study i.e. the control group and the study group. The number of samples is calculated using the sample calculator. Twenty pieces are taken for each group. In the control group, the machining operations were carried out on super duplex stainless steel (SDSS) without lubrication i.e. dry machining. In the study group, a NMQL technique is implemented where the compressed lubricant is applied to the machining zone. The surface roughness of each group is measured by a surface roughness tester. The effect of the NMQL technique on surface roughness is studied. The SPSS software is used for statistical analysis. The number of the samples was calculated by keeping the alpha value 0.05 and G – power as 80%.
Results: The Surface roughness of MQL is lesser than the samples obtained from the dry machining operation. The significant value obtained is p = 0.001, which is less than 0.05. Therefore, there is a statistically significant difference between the groups.
Conclusion: Within the limits of study, There is a 63% of improvement in the surface finish when the MQL technique is implemented over dry machining.

PDF (Download Full text)

Download Citation (XML)