 |
AEROSPACE
INDUSTRY
FORMULA
ONE
SATELLITE
INDUSTRY
OTHER
INDUSTRIES
|
 |
ABOUT
Wire & Spark, Spark Erosion, EDM and Wire EDM.... |
 |
| Electro Discharge
Machining (EDM) |
|
There are many industry terms used
to explain the technology; Wire & Spark, EDM, Electro
Discharge, Spark Erosion and wire EDM to name a few,
this is a summary of what these terms are referring
to....
EDM Machining Process
A machining method typically used for hard metals. Electro
Discharge Machining ( commonly known as EDM ) makes
it possible to work with metals for which conventional
machining techniques are ineffective, such as; titanium,
hastelloy, kovar, inconel and carbide. EDM will only
work with conductive materials. It is possible to cut
small odd-shaped angles, detailed contours and produce
angular holes & apertures.
Remember:The
more complicated the shape,the more economical the EDM
process becomes.
The EDM process
is used in the tool & die industry, mould making, and
is an integral part for making prototypes, and production
parts for the Aerospace , Nuclear and Electronic industries.
Wire Erosion ( or Wire
EDM ) is an electro-thermal production
process in which a single strand metal wire ( usually
brass .25mm diameter ) in conjunction with de-ionised
water Di-Electric allows the wire to cut through the
metal by the use of heat from the electrical sparks.
Wire EDM can easily machine complex parts and precision
components out of hard exotic materials.
Sinker EDM
Two conductive parts submerged in an insulated liquid
( Di - Electric ) are connected to a source of current
which is switched on and off automatically through a
controller. When the current is switched on an electric
tension is created between the two metal parts, if the
two parts are brought together to within a fraction
of a millimetre the electrical tension is discharged
and a spark jumps across, where it strikes the metal
is heated up so much that it melts.
The EDM Process
was discovered in 1770 by an English Scientist Joseph
Priestly, but not fully taken advantage of until 1943
by Russian Scientists. It was commercially developed
in the mid 1970's and in the 1980's became widely available.
CNC EDM fast hole drilling
is an ideal and cost effective solution when producing
holes from 0.3 to 6.0mm diameter,mainly in hard and
work hardening type materials.
For example: A 3mm diameter hole to a depth of 50mm
in Inconel(nickel alloy) can be achieved in under 3
minutes. Any conductive material can be processed by
EDM fast hole drilling.
Applications/solutions include:anything from a wire
locking hole in a socket head cap screw to a turbine
engine part with hundreds of holes.
Return
|
|
 |
 |
|
