Evaluation of MQCL Technique Using MoS<sub>2</sub> Nanofluids During Hard Milling Process of SKD 11 Tool Steel

Abstract

The current study demonstrates the effect of minimum quantity cooling lubrication (MQCL) using MoS 2 emulsion-based nanofluid on hard milling of SKD tool steel (52-60 HRC) with coated cemented carbide inserts. The input machining parameters including nanoparticle concentration, cutting speed and hardness on cutting forces are investigated in term of cutting force components by using ANOVA analysis applied for the Box-Behnken experimental design. The results indicate that the hardness and nanoparticle concentration have a strongest influence on cutting forces. The interaction effects of investigated parameters are studied in detail and provide the important direction for using MoS 2 nanofluid efficiently with the proper concentration of 1.0-1.1 wt%. Moreover, the cutting performance of carbide tools is significant improved during hard milling process due to the better cooling and lubricating effects of MQCL technique.

Study on multi-objective optimization of X12M steel milling process by reference ideal method

“…This type of steel is popularly used to fabricate parts in various fields such as steel cutters, rolling pins, rollers, gears, dies, etc. Study on milling this steel has been done by a number of authors, such as: Investigation of the effect of nanoparticle concentration, cutting speed and hardness of the workpiece on cutting force when milling in MQL conditions [24]; Simultaneous optimization of two, which are surface roughness and milling vibration [25]; study on the effects of cooling lubricating parameters on surface roughness when milling under MQL condition and minimum quantity cooling lubrication (MQCL) condition [26]; investigation of cutting force, surface roughness and tool wear while milling with laser support [27]; study on improving the efficiency of milling process in MQLC conditions, cutting fluid of MoS2 Nanofluid [28]; study on effect of cutting parameters and cooling lubrication parameters on surface roughness [29], etc. However, no studies have been published to determine type of cutting tool, tool nose radius, cutting speed, cutting depth to simultaneously ensure the criteria of minimum surface roughness, minimum cutting force and maximum MRR when milling this steel up to now.…”