Abstract:
Turning is a widely used machining operation when compared to other
manufacturing processes. The finished component is subjected to dimensional
accuracy, required surface finish and the tool is subjected to less cutting force,
minimum possible temperature and maximum tool life. In order to achieve these
desired performance measures in any machining operation, proper selection of
machining parameters is very essential. The present method of selection of
machining parameters of machining parameters by previous work experiences of the
process planner and machining handbooks are basically related with lower cutting
speed and also without the existence of Minimum Quantity Lubricant (MQL).
In any machining process, it is very important to control the cutting variables
used during the process because these will affect, for example, tool life and
workpiece dimensional control. Since the built-up edge (BUE) increases the wear of
the tool and affects the tool life, the study of this phenomenon is very important in
predicting and minimizing the wear of a cutting tool and also to get good
dimensional control.
iii
There is a need to find the optimal machining parameters for the desired
performance measures in minimum production time and minimum production cost.
In this work, effect of machining parameter on built-up edge, microstructure
alteration and tool life during turning Inconel 718 under MQL condition are being
investigated in order to select the optimal machining parameters such as cutting
speed, feed rate and depth of cut in minimum possible production time and
production cost on turning process.
