Abstract
Due to increase in temperature at the cutting zone, the tool wear and surface roughness along with the non-uniform chip formation and the dimensional deviation of the job by using the conventional cutting fluid, the machining operation experts have directed their concentrations in order to achieve a smooth machining operation by using minimum quantity lubrication (MQL). As a consequence, numerous efforts can be seen for not only having the optimum cutting parameters but also other parameters that enhance the product quality and the surface roughness. In this regard, relevant experimental and numerical data outcomes not only MQL but also conventional cutting fluid (CCF) in the turning operation of 50HRC steel has been investigated experimentally. It is revealed that the surface roughness becomes optimal and significantly reduced for the condition of MQL with that of dry and conventional flood lubrication.
Highlights
Minimum quantity lubrication or minimum quantity lubrication (MQL), known as "Micro lubrication", is the new method of delivering metal cutting fluid to the chip-tool interface
The minimum quantity lubrication system comes out as another method that can be studied in details so as to reach the desired objectives and that may be considered to be an economical and environmentally compatible lubrication system in the machining operation
The coolant cannot reach the critical areas and the tool work piece area or cutting zone area cannot be cooled. It is widely used in various machining operation minimum quantity lubrication (MQL) method due to its huge advantages. This is possible if machining is carried out at maximum cutting parameters and at the same time able to achieve enhanced tool life (TL).When the high pressure soluble oil is used on the chip tool interface, it can reduce the cutting temperature and improve the tool life and surface finish to a certain extent
Summary
Minimum quantity lubrication or MQL, known as "Micro lubrication", is the new method of delivering metal cutting fluid to the chip-tool interface. It is widely used in various machining operation minimum quantity lubrication (MQL) method due to its huge advantages This is possible if machining is carried out at maximum cutting parameters and at the same time able to achieve enhanced tool life (TL).When the high pressure soluble oil is used on the chip tool interface, it can reduce the cutting temperature and improve the tool life and surface finish to a certain extent. Metal cutting fluids have changed the performance of machining operations due to their lubrication, cooling and chip removal functions, but in terms of employee health and environmental pollution, the use of cutting fluids has become a problem [10, 11] They suggested MQL mainly by which reduction the cutting zone temperature and favorable change in the chip-tool and work-tool interaction. MQL very useful on hard machining process because of its high pressure jet flow, good mixture of coolant and applied at the chip-tool interfaces and could reduce cutting temperature
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