The primary focus of this work is to study the effects of a novel minimum quantity lubrication (NMQL) or near-dry machining technique on tool flank wear of the tool inset in machining super-duplex stainless steel and compare the surface finish with the machined surface performed by dry machining process. Two set of groups were taken for the study, i.e. control group (Dry machining) and the experimental group (Machining with Minimum Quantity Lubrication Technique). The number of samples is calculated using the sample calculator. Twenty samples were taken for each group. In the control group, the machining operation is carried out on Super-Duplex Stainless Steel without any kind of lubrication. In the study group using a NMQL technique, the compressed lubricant is sprayed to the machining area. The tool flank wear of the inserts of each group is measured by microscopic images. The effect of the NMQL technique on the tool wear of the inserts is studied. The tool wear of the samples from NMQL is better than the samples obtained from the dry machining operation. It was concluded that there was a 60% of reduction in tool wear when the minimum quantity lubrication (MQL) technique is implemented over dry machining.

PDF (Download Full text)

Download Citation (XML)