Find EDM including electric discharge machining, micro EDM, sinker EDM and more. From small hole EDM to Wire EDM, you will find the EDM service you need. Use the time-saving Request for Quote tool to submit your inquiry to all the EDM services and companies you select.
Wire Cut Company specializes in wire EDM services, small hole EDM, conventional EDM and high-speed EDM. We provide high quality services for a wide range of industries, including medical, aerospace and semiconductor, as well as others. Wire Cut is also ISO 9002/AS 9000 compliant.
Milco Wire EDM is a leading complete job shop provider with capabilities of Wire EDM, Small Hole EDM Drilling, CNC Sinker EDM and Waterjet services. Catering to all aspects of the manufacturing industries, ISO compliant, fastest turnaround and competitive pricing.
Twin City EDM specializes in wire EDM services as well as conventional EDM and small hole EDM. We provide quality products and services for a variety of industries and applications. Twin City EDM is an ISO 9001:2000-certified company. Call us today for your electrical discharge machining needs!
At CEI, we are experts at meeting your wire electrical discharge machining needs from design assistance to completion. Utilizing Wire EDM since 1984, we have the ability to manufacture Production Wire EDM Parts, Wire EDM Tubular Components, Wire EDM Fixtures and Wire EDM Tooling Components.
Saturn Industries offers the finest precision machining services: wire, sinker, and small hole EDM; laser-inspected centerless grinding; CNC milling; turning; and flat and contoured grinding to ±0.0002" tolerances. Serving today's highly complex EDM applications, we specialize in EDM electrodes.
Our capabilities include electrical discharge machining. Simard Tool Company offers EDM machining (wire & sinker), micro machining, and cnc machining (milling & turning). Our EDM machining abilities included five axis wire EDM machining using small EDM wire sizes. We use anti-electrolysis technology.
Wire EDM machining, small hole EDM, submerged cutting, prototypes, high- or low-volume machining, CNC machining and more take place at New Jersey Precision Technologies when we acquire your work. NJPT can give items taper angles to 30°+ and work with pieces 16" or more in thickness.
Since 1991, Cox MHP has been a leading provider of electrical discharge machining, small hole EDM, high-speed EDM and wire EDM. We provide precision, high-quality wire EDM services and products supported by years of experience. Cox MHP specializes in quality and innovation in our products.
We are a full service EDM company specializing in dental & medical applications with a short and long run capacity. AAA Electrical Discharge Machining provides EDM & CNC sinker EDM for the medical, automotive & electronics industries. We are ISO 9002 compliant & exceed our customers requirements.
Electrical discharge machining, abbreviated as EDM,
is a tooling method that uses electrical energy to shape and form metal
parts. Electrical discharge machining EDM is one of the most accurate
manufacturing methods of working exceptionally hard metals and other
materials that are difficult to machine cleanly with more conventional
methods. EDM is a process of elimination that erodes or removes metal
and material in the path of electrical discharges that form an arc between
an electrode tool and the work piece until the desired part is attained.
Using this process is extremely accurate, reliable and affordable, so
it is becoming an increasingly popular choice for many companies. Diverse
materials such as the following can be cut with electrical discharge
machining: aluminum, copper, zinc, bronze, tin, silicon, titanium, stainless
steel, gold, lead, silver, iron, cobalt, nickel and tungsten. This list
is by no means extensive, since this EDM process can be used on many
different metals and compounds.
The actual machining is accomplished through sparks, which are electrical
discharges that can generate heat anywhere from eight to twenty thousand
degrees. A shaped tool, electrode or wire is used to generate the series
of sparks, depending on the process. There is no actual contact between
the electrode and the work piece, but rather a conductive path that is
established between the electrode and the material. This process takes
place in a bath of dielectric fluid, which prevents premature sparking
and flushes away debris, conducts electricity between the electrode and
the work piece and then flushes out the melted material. There are two
types of EDM: wire and probe. Wire EDM is used for cutting shapes through
a selected part or assembly. The cutout must have a hole drilled into
it, then the wire is fed through the hole to complete the machining.
Probe EDM is used for more complex geometries where machined graphite
or copper electrodes are used to erode the desired shape into the part
or assembly. CNC
machines are used to guide, monitor and control the electrical discharge
machining process.
Electrical discharge machining has advantages over other machining techniques
due to its ability to create complex and intricate parts with a high
degree of accuracy. This process is able to machine hard materials, where
other machining processes would have difficulties. Another advantage
of EDM is its ability to machine parts on an extremely small scale. While
using this process, the work piece is not deformed from impact because
there is no direct contact between the electrode and the material, and
likewise the work piece is burr-free after completion and saved from
heat damage because very little is actually generated during the procedure
that would harm the material. Many EDM machines electrodes can rotate
about two-three axis, which is another advantage because it allows for
the cutting of internal cavities.
As well as dimensional factors of size and shape, an important consideration
before undergoing this EDM procedure is the material of the work piece,
since the material of the electrode has to be specially matched. Some
of the common applications for electrical discharge machining include
producing plastic molds, die casting dies from hardened steel and forging
dies. Other purposes include the manufacturing of engine parts like compressor
blades of titanium alloys and nickel based super alloys. Industries that
benefit from the use of the electrical discharge machining process include
food and beverage, automobile, stamping, extruding, defense, electronics,
aerospace and medical.
Double rotating electrodes
is an EDM method that uses rotating electrodes to erode a revolving
workpiece, creating different workpiece shapes by blending the comparative
locations and angular velocities of the workpiece and the electrode.
EDM machining uses electrical energy to shape and form metal parts.
Electrical discharge
grinding (EDG) uses a revolving electrically conductive wheel
as the electrode tool for electrical discharge erosion. EDG
is an alternative method for sharpening diamond and carbide tipped
cutting tools, reducing the extreme cost of diamond grinding
wheels.
Micro electrical discharge
machining (MEDM) is a miniature ram type machine that usually
uses a diamond V-groove to spin the tool electrode up to 10,000 rpm.
Electrode diameters as low as five microns are possible for the production
of micro-holes and other shapes in thin, electrically conductive materials.
Micro Wire EDM (MWEDM)
processes use a tungsten wire electrode that has a diameter as
small as 10µm to machine parts from .1 to 1 mm in size; the size
of these parts makes it impossible to form them through normal semiconductor
processes. These machines use a specially designed wire movement system,
spark generator and monitoring system able to analyze and control extremely
low energy levels.
Sinker EDM removes metal with rapid electrical discharges.
Small hole EDM uses electrical discharges to create microscopic holes.
Wire electrical discharge machining (WEDM)
is a common EDM process that removes material with a wire electrode
moving longitudinally through the workpiece. A CNC machine with special
software maintains the movement of the wire electrode relative to the
workpiece.
Electrical Discharge Machining Terms
Altered Metal Zone
– A mechanically altered zone on a metal surface that is created
by the EDM process.
Billet – An uncut block of graphite
provided by a manufacturer.
Burning – Slang term for the EDM process.
Capacitor – An electrical unit
that stores electricity.
Center Flow – Dielectric fluid
that is pumped through the workpiece or electrode for flushing purposes.
Crater – Small holes on the
workpiece surface left over from the EDM sparks, also referred to as pits.
Dielectric Fluid – A nonconductive
liquid that fills the space between the electrode workpiece and insulates
it until the needed space and voltage are reached. At that point, the
fluid ionizes, becoming an electrical conductor, and causes the current
or spark to flow to the workpiece; it also cools the material and flushes
away the particles produced by the spark.
Diametrical Sparking Distance –
The difference in size between the electrode and the size of the crater
the electrode makes.
Discharge – The spark in the
electrical discharge machining process.
Edge Finder – An apparatus initiated
by electricity that helps accurately locate the workpiece in relation
to the electrode. When any part of a workpiece comes to within about 0.0001
inches of any position alongside the electrode, a buzzer or signal light
will alert the operator.
Electrode – The tool used in
the EDM procedure, which must be made from an electrically conductive
material. The shape and form of the electrode is a mirror of the completed
shape desired in the workpiece with dimensional compensation for the
overcut.
Eroding – The elimination of
material through electrical discharge machining.
Finish – The surface texture
in the EDM process, usually expressed as min Ra (U.S.).
Finish Cut – The last cut done
on a workpiece. The finer the finish preferred, the more time the finish
cut will take, so the rough cuts should be planned to leave just the material
the finish cut will remove in order to attain both the final size and
finish needed.
Flushing – The forcing of dielectric
fluid through the gap for the removal of detritus resulting from EDM.
Gap Voltage – A measurement
of the voltage at two different points in one complete cycle. The open
gap voltage is the voltage read across the electrode and workpiece space
prior to the spark; the working gap voltage is read across the space as
the spark current discharges.
Graphite – One of four types
of carbon, used for electrode material because of its high resistance
to heat. Graphite is the most common electrode material and the simplest
to machine.
Heat Affected Zone (HAZ) – The
layer below the recast layer. Its metal properties change due to the increased
heat exposure.
Off-Time – The time between
the sparks in the EDM process.
Overcut – The variation between
the size of the electrode and the size of the cavity since an EDM crater
is always bigger than the electrode machining it. There are two different
types of overcut to take into consideration: total overcut, also known
as diametrical overcut (the most common), or overcut per side.
Peak Current – The highest amount
of current that is available from every pulse of the power supply.
Recast Layer – A layer that
results from melted metal solidifying on the surface of the workpiece.
Roughing (Hogging) Cut – An
EDM method that eliminates the most material in the least amount of
time.
Spark – The electrical discharge between two conductors.
Spark Gap – The space between
the workpiece and the electrode at the point of discharge.
Spark Intensity – The energy
that is contained in each spark.
Surface Finish – Comparative
smoothness or coarseness of a machined workpiece surface, typically
measured in min Ra in the U.S.
Wear – Erosion the electrode
undergoes during the EDM process.
Workpiece – Any metal part to
which an electrical discharge machining process is applied.
