Parametric optimization of dry-turning of Nickel-Chromoly steel with various cutting tool using WASPAS method

Abstract

Many contemporary researchers have proposed the concept of dry machining, which has numerous benefits, ranging from the avoidance of adverse impacts on individuals as well as the ecosystem to the a number of cost cutting during machining, but it also has many disadvantages, such as an increase in the structural and thermal stresses of the tool. For the extent of cutting forces has a substantial effect on the creation of heat, toolwear, surface-finish, and the precision of the workpiece, determining cutting forces during machining operations can be one way to attain this and assess the machine-ability of a material. This study deals with cutting force investigation while dry turning AISI 4340 steel. Keeping the feed rate fixed and varying the spindle speed along with three different cutting inserts (PVD coated, uncoated, and CVD coated), the components of cutting force (thrust (Fx), feed (Fy), and cutting (Fz)) were investigated. The Weighted Aggregated Sum Product Assessment (WASPAS) technique combined with the Taguchi method was employed to minimise the cutting force and fetch the optimum result. ANOVA was performed to determine the most relevant variables influencing cutting force. Finally, convergence of the result with previous studies and a confirmation test were also done. It was found that CVD-coated cutting inserts induced minimum cutting force while turning AISI 4340 steel at low spindle speed.