SUSTAINABLE TURNING PERFORMANCE OF AISI 6150 STEEL USING MICRO-TEXTURED ALTISIN TOOLS UNDER RADIATOR COOLANT BASED MQL

The present research explores the machinability of AISI 6150 chromium vanadium steel when it is being turned using micro-textured AlTiSiN-coated carbide inserts under Minimal Quantity Lubrication (MQL) conditions with automotive radiator coolant. Textures of micro-channels and micro-pits were created on the tool rake face to increase tribological behavior. A series of comparative experiments were carried out with non-textured tools at different cutting parameters. The findings show that textured tools large-scale minimize cutting temperature (down to about 25 C), tool wear, and friction and enhance surface finish and tool life. It is believed that these enhancements are due to decreased tool-chip contact area, increased lubricant retention and better heat dissipation. MQL with radiator coolant can also offer a low-cost and greener alternative to the conventional cooling methods and the cost of machining will be lowered by approximately 9%.