Effect of temperature on nano metal oxide coating in boring hardened steel

In the boring process, the tool is subjected to excessive wear due to an increase in cutting temperature which affects the quality of the finished product. To avoid the rise in cutting temperature multilayer-coated tools were used to improve machining performance. In this present investigation, Aluminum oxide+zirconium oxide, titanium oxide+zirconium oxide and zirconium oxide were used as coating material with various coating techniques such as dip, spin and spray for dry, semisolid and wet condition. A 27 run experimental results were optimized using the Taguchi technique and analysis of variance and found that two-layered TiO2 +ZrO2 deposited in series gives a better performance against the Al2O3 +ZrO2 and ZrO2 with spray technique and wet condition.