Study on the Effect of Workpiece Hardness and Tool-Nose on Cutting Force and Chip-Tool Interface Temperature during Dry Hard Turning of AISI 4340 Steel

Volume 8 Issue 1 November - January 2018

Research Paper

Study on the Effect of Workpiece Hardness and Tool-Nose on Cutting Force and Chip-Tool Interface Temperature during Dry Hard Turning of AISI 4340 Steel

Sanjeev Kumar*, Dilbag Singh**, Nirmal Singh Kalsi***

*-*** Associate Professor, Department of Mechanical Engineering, Beant College of Engineering and Technology Gurdaspur, Punjab, India.

Kumar, S., Singh, D., and Kalsi, N. S. (2018). Statistical Investigations into the Erosion of Material from the Tool in Micro-Electrical Discharge. i-manager’s Journal on Mechanical Engineering, 8(1), 8-19. https://doi.org/10.26634/jme.8.1.13821

Abstract

The selection of process parameters during hard turning is critical deciding the performance of hard turning. In this research work, an attempt has been made to analyze the influence of tool nose radius and workpiece hardness on cutting force and chip-tool interface temperature during hard turning of AISI 4340 steel. The experiments were performed as per layout design with the central composite design. The mathematical models of cutting force and chiptool interface temperature were developed using second order regression analysis. The adequacies of the developed models are analyzed by performing confirmation runs. The significance of the models and influence of the process parameters have been carried out based on Analysis of Variance (ANOVA) technique. The optimal values of the process parameters which provide maximum machining performance are predicted. The results show that workpiece hardness is the significant parameter which affects the performance of hard turning