Influence of machining parameters on cutting tool life while machining aluminum alloy fly ash composite

International Conference on Advances in Materials and Manufacturing Applications 2016

Rao, C R Prakash^1,2 ; Chandra, Poorna^2 ; Kiran, R.^2 ; Asha, P.B.^2

Dept. of Mechanical Engineering, Global Academy of Technology, Bengaluru, Karnataka

560098, India^1

Visvesvaraya Technological University, Belagavi, India^2

关键词: Aluminum alloy composites;    Burr formation;    Catastrophic failures;    Experimental investigations;    Hard ceramic particles;    Notch wear;    Strength to weight ratio;    Tool life;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012157/pdf
DOI  :  10.1088/1757-899X/149/1/012157

来源: IOP

【 摘 要 】

Metal matrix composites containing fly ash as reinforcement are primarily preferred because these materials possess lower density and higher strength to weight ratio. The metal matrix composites possess hetrogeneous microstructure which is due to the presence of hard ceramic particles. While turning composites, the catastrophic failure of cutting tools is attributed to the presence of hard particles. Selection of optimal cutting conditions for a given machining process and grade of cutting tools are of utmost importance to enhance the tool life during turning operation. Thus the research work was aimed at the experimental investigation of the cutting tool life while machining aluminum alloy composite containing 0-15% fly-ash. The experiments carried out following ISO3685 standards. The carbide inserts of grade K10 and style CGGN120304 were the turning tools. The cutting speed selected was between 200m/min to 500m/min in step of 100m/min, feed of 0.08 & 0.16 mm/revolution and constant depth of cut of 1.0 mm. The experimental results revealed that the performance of K10 grade carbide insert found better while machining composite containing 5% filler, at all cutting speeds and 0.08mm/revolution feed. The failures of carbide tools are mainly due to notch wear followed by built up edge and edge chipping.