Latest
Machining
Processes
The
recent
increase
in
the
use
of
hard,
high
strength
and
temperature
resistant
materials
in
engineering
has
necessitated
the
development
of
newer
machining
techniques.
With
the
exception
of
grinding,
conventional
methods
of
removing
material
from
a
work
piece
are
not
readily
applicable
to
these
new
materials.
New
materials
such
as
hastalloy,
nitralloy,
waspalloy,
nimonics,
carbides
etc.,
are
difficult
to
machine
and
find
applications
in
aircrafts,
nuclear
reactors,
turbines,
special
cutting
tools
etc.
Conventional
machining
processes
when
applied
to
these
newer
materials:
(i)
Are
uneconomical,
(ii)
Produce
poor
degree
of
accuracy
and
surface
finish
(iii)
Produce
some
stress
in
the
metal
being
cut
whereas
newer
machining
techniques
are
essentially
stress
free.
(ill)
Are
slow
and
highly
insufficient
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