Optimization of the machining of Ti-6A1-4V under MQL and flood cooling conditions
Date
2014-02-17
Authors
Eckowitz, Jordan
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Abstract
This research investigation focused on the quantitative comparison of Ti-6Al-
4V with respect to two cutting fluid delivery systems: Flood Coolant and
Minimum Quantity Lubrication (MQL). The analysis was based around the
effect of three general machining process parameters (axial depth of cut, cutting
speed and feed) with regard to surface integrity factors/descriptors (such as
residual stress) and machining responses (such as workpiece temperature).
The investigations were undertaken both experimentally and computationally.
The results illustrate that in order to enhance the surface quality of milled
Ti-6Al-4V, when using Flood Coolant & MQL, one should minimize the feed
rate. The conclusions drawn from the other two analysed process parameters
are what differentiate Flood Coolant & MQL. In order to enhance the surface
quality of MQL machined components one needs to maximize the axial depth
of cut and minimize the cutting speed. This outcome results in a machining
setup that has a higher material removal rate than the optimum Flood Coolant
solution and with an enhanced surface quality and tool life. Therefore, the
results indicate that MQL, which is an economical and environmentally-friendly
cutting fluid solution, is a system that is better suited to milling Ti-6Al-4V
than Flood Coolant.