A study on Effect of Surface Finishing Processes on Surface Roughness of AISI D2 Tool Steel
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Abstract
According to recent studies, dry hard turning is
more beneficial practical process compared to a grinding
operation, it increases quality, reduces cost and lead-time for
machined parts. In this study, effects of workpiece hardness,
feed rate, depth of cut and cutting speed on surface roughness
were studied using chamfered and honed CBN inserts. Four
factors (hardness, depth of cut, feed rate and cutting speed)
were considered and - two level fractional experiments were
conducted and analysis of the variance was performed.
Furthermore this study shows that the effects of grinding of
heat treated AISI D2 specimens on surface roughness were
conducted and a comparison took place with hard turning.
To investigate the effect temperature increase on both
techniques, the machined surface of workpieces is examined
using optical and scanning electron microscopy SEM.
Practical results shows the lower workpiece hardness and
lower cutting conditions resulted in a better surface roughness.
Finally results showed that in hard machining not only the
machining parameters have an influence on the surface
roughness but also the material hardness found effective factor
in finishing process.
Article Details
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