Table 3: Machining conditions.

MachineEngine lathe-LB-20
Work piece materialAA 6061
Process parameters
 Spindle speed (rpm)800, 1270, and 1600
 Feed (mm/rev)0.100, 0.175, and 0.250
 Depth of cut (mm)0.5, 1.0, and 1.5
Cutting tool
 MaterialCarbide cutting tool (uncoated)
 Tool holderHigh speed steel (HSS)
 Tool nose radius (mm)0.4
 Cutting tool edge length (mm)9
Cutting fluidsMJO, MPO, and MO
Cutting fluid supplyMQL method (3 to 4 bars)