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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
395Machining by Thermal Erosion
on the workpiece material but also on the material of the tool electrode and
the machining variables such as pulse conditions, electrode polarity, and the
machining medium. In this regard, a material of low melting point has a
high metal-removal rate and, therefore, a rougher machined surface. Typical
removal rates range from 0.1 to 10
3
mm
3
/min. Figures 12.13 and 12.14 explain
the effect of pulse energy (current) and duration on the crater size and, there-
fore, the removal rate. The material removal rate, VRR in mm
3
/min, is given
by Kalpakjian (1997):
VRR
m
w
×
()
.
410
4
123
I
T
where
I
m
is the EDM current in A
T
w
is t ...
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Publisher Resources

ISBN: 9781466577022