"Investigations on the machinability of Waspaloy under dry environment"

International Conference on Advances in Materials and Manufacturing Applications 2016

Deepu, J.^1 ; Kuppan, P.^1 ; Sbalan, A.S.^1 ; Oyyaravelu, R.^1

School of Mechanical Engineering, VIT University, Vellore

632014, India^1

关键词: Average surface roughness;    Dry machining;    Multiresponse optimization;    Nickel- based superalloys;    Optimal cutting parameters;    Response surface methodology;    Tool wear;    Waspaloy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012012/pdf
DOI  :  10.1088/1757-899X/149/1/012012

来源: IOP

【 摘 要 】

Nickel based superalloy, Waspaloy is extensively used in gas turbine, aerospace and automobile industries because of their unique combination of properties like high strength at elevated temperatures, resistance to chemical degradation and excellent wear resistance in many hostile environments. It is considered as one of the difficult to machine superalloy due to excessive tool wear and poor surface finish. The present paper is an attempt for removing cutting fluids from turning process of Waspaloy and to make the processes environmentally safe. For this purpose, the effect of machining parameters such as cutting speed and feed rate on the cutting force, cutting temperature, surface finish and tool wear were investigated barrier. Consequently, the strength and tool wear resistance and tool life increased significantly. Response Surface Methodology (RSM) has been used for developing and analyzing a mathematical model which describes the relationship between machining parameters and output variables. Subsequently ANOVA was used to check the adequacy of the regression model as well as each machining variables. The optimal cutting parameters were determined based on multi-response optimizations by composite desirability approach in order to minimize cutting force, average surface roughness and maximum flank wear. The results obtained from the experiments shown that machining of Waspaloy using coated carbide tool with special ranges of parameters, cutting fluid could be completely removed from machining process.