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Fundamentals of Machining Processes, 2nd Edition
book

Fundamentals of Machining Processes, 2nd Edition

by Hassan Abdel-Gawad El-Hofy
August 2013
Beginner to intermediate content levelBeginner to intermediate
562 pages
16h 1m
English
CRC Press
Content preview from Fundamentals of Machining Processes, 2nd Edition
390 Fundamentals of Machining Processes
The discharging current I
d
becomes
I
V
R
d
d
c
=
The volumetric removal rate VRR (mm
3
/min) is given by
VRRC
C
ap
sp
cap
dsp
=
K
V
R
VV
1
2
11
1
1
ln
(/ )
The average surface roughness (R
a
) is given by the following empirical
formula:
RK
V
a
=
2
05
da
p
0.5
C
.
where
V
sp
is the supply voltage in V
V
d
is the discharge voltage in V
R
c
is the resistance in
C
ap
is the capacitance in f
t
1
is time in s
K
1
and K
2
are constants
VRR is the volumetric removal rate in mm
3
/min
R
a
is the average surface roughness in μm
R
c
V
sp
V
d
I
d
I
c
C
DischargingCharging
FIGURE 12.7
Various parts of an RC.
391Machining by Thermal Erosion
The RC, however, has m ...
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Publisher Resources

ISBN: 9781466577022