This
study
explores
the
grindability
and
sustainability,
focusing
on
tribological
lubrication
capabilities
of
water-soluble
hybrid
nanofluid
under
minimum
quantity
(MQL)
conditions
during
grinding
Nimonic-90.
Nanofluids
were
prepared
by
adding
0.25%,
0.75%,
1.25%
volumetric
concentrations
Al2O3,
GnP
nanoparticles
into
deionized
(DI)
water.
The
thermal
conductivity,
contact
angle,
dynamic
viscosity
nanofluids
characterized.
Specific
tangential
forces,
specific
normal
coefficient
friction,
surface
roughness
reduced
approximately
37%,
25%,
17%,
11%,
respectively,
compared
to
pure
Al2O3
based
29%,
14%,
12%,
relative
nanofluid.
Consequently,
a
0.75%
concentration
water-based
emerged
as
most
promising
cutting
fluid.
Journal of Tribology,
Год журнала:
2024,
Номер
146(8)
Опубликована: Апрель 2, 2024
Abstract
Rapid
tool
wear
in
machining
difficult-to-cut
material
is
a
significant
challenge
since
it
related
to
cost,
surface
integrity
of
machined
components,
and
power
consumption.
The
reduction
may
be
accomplished
by
cutting
fluids,
especially
modern
biodegradable
fatty
acids.
Because
its
high
lubricity,
coconut
oil
the
best
choice
for
lubricating
However,
this
has
poor
heat
transfer
properties.
Hence,
further
improve
properties,
copper
(Cu)
nanoparticles
(NPs),
which
have
thermal
conductivity
cost
ratio
compared
other
addition
anti-frictional
anti-wear
properties
(due
self-repairing
caused
their
low
shear
strength
easy
deposition
on
contacting
surfaces),
been
dispersed
oil,
thus
creating
nano-lubricant
(nanofluid).
It
found
that
synthesized
nano-lubricants
perform
better
thermo-physics
tribology
than
pure
oil.
Further,
research
carried
out
combined
effects
0.3
vol%
Cu-NPs
Incoloy
925's
end
milling
performance
mechanism
(viz.,
coating
delamination,
adhesion,
abrasion,
oxidation).
wear-rate
reduced,
turn
increases
life,
due
effective
cooling
lubrication
when
nanofluid-based
minimum
quantity
(NMQL)-assisted
performed
rather
dry
oil-based
(MQL)
conditions.
Consequently,
energy
consumption
quality
components
are
improved.
In
this
study,
during
the
turning
process
of
Ti6Al4V
alloy,
which
is
difficult
to
machine,
nanofluid,
whose
base
fluid
vegetable
oil
(sunflower
oil),
was
applied
cutting
zone
with
minimum
quantity
lubrication
(MQL)
technique.
Thermal
conductivity
coefficients
and
dynamic
viscosities
nanofluids
prepared
by
adding
hexagonal
boron
nitride
(hBN)
nanoparticles
(65-75
nm)
at
different
concentration
rates
(0.5%
1%)
surfactant
(Sodium
dodecyl
sulfate,
SDS)
were
measured.
Additionally,
stability
observed
for
15
months.
experiments,
4
speeds
(50,
75,
100
125
m/min),
feed
(0.05,
0.10,
0.15
0.20
mm/rev)
cooling
methods
(dry,
PureMQL,
0.5%
NanoMQL
1%
NanoMQL)
used
as
cut
off
parameters.
The
effect
change
in
these
parameters
on
surface
roughness
(Ra),
temperature
(T)
flank
wear
tools
(Vb)
investigated
experimentally
analytically.
As
a
result
research,
experimental
results
evaluated
using
variance
analysis,
signal/noise
(S/N)
analysis
artificial
neural
networks
(ANN)
methods.
measurements
observations,
it
determined
that
nanofluid
had
best
stability.
MQL
method
exhibited
machining
performance.
According
ANOVA
S/N
results,
seen
parameter
most
affects
rate
(95%),
conditions
(70%),
tool
(45%).
prediction
performances
ANN
Taguchi
approaches
examined
success
more
than
98.5%
80.8%,
respectively.
Especially
Vb
values
have
very
close
data,
accurate
predictions
made
approach
compared
Taguchi.
This
study
explores
the
grindability
and
sustainability,
focusing
on
tribological
lubrication
capabilities
of
water-soluble
hybrid
nanofluid
under
minimum
quantity
(MQL)
conditions
during
grinding
Nimonic-90.
Nanofluids
were
prepared
by
adding
0.25%,
0.75%,
1.25%
volumetric
concentrations
Al2O3,
GnP
nanoparticles
into
deionized
(DI)
water.
The
thermal
conductivity,
contact
angle,
dynamic
viscosity
nanofluids
characterized.
Specific
tangential
forces,
specific
normal
coefficient
friction,
surface
roughness
reduced
approximately
37%,
25%,
17%,
11%,
respectively,
compared
to
pure
Al2O3
based
29%,
14%,
12%,
relative
nanofluid.
Consequently,
a
0.75%
concentration
water-based
emerged
as
most
promising
cutting
fluid.
