Nature Behind Every Spark: Dynamics Of Wire Edm Services

Electric Discharge Machining is the unconventional cutting technique used for thick

and hard metals wherein the cutting tool is electrical currents or sparks. There are two types of Electric Discharge Machining: the Sinker EDM and Wire EDM. The Sinker EDM is the cutting process which uses an electrode to produce electrical sparks in cutting the work piece while both the electrode and work piece remained dipped in deionized liquid. As the electrode touches the work piece, the heat of sparks melts the point of contact which then creates carvings. Deionized liquid flushes away the debris from the cutting zone. It also acts as a coolant for the melting process in the cutting.

Wire EDM is the cutting or drilling process which also uses the heat of electrical sparks. But unlike the Sinker EDM, Wire EDM uses a metallic and ductile wire to cut through the work piece. The main idea of cutting is to electrify the wire and as the heat of electric current intensifies, it melts the parts ran through by the wire creating holes, cuts or shapes.

People seek the wire EDM services when the less residual stress is desired. The removal of the materials does not require high cutting forces. If the material hasnt been stress relieved, it may result into breakage of the material.

The wire is usually made of brass or copper since it has high conductivity than other metal wires. The electric current that runs through the wire measures from 8000 to 12000 degrees Celsius which is perfect for cutting thick and hard metals. It can be formed into different shapes to widen the variety of design of holes and cuts. The wire is normally held by diamond guides. Diamond guides are usually CNC-controlled. They are controlled by numbers and coordinates planted on an x-y axis. These axes represent the position and drilling or cutting point. CNC-controlled machines are known to be the best in prototyping because of its refined cutting capability.

Wire EDM services involve processes like mold-making and die industries, drilling holes, and metal stamping.

Molding

Molding is the process of manufacturing wherein it shapes the material through a rigid form of pattern. It utilizes the use of wire EDM through making the metal pattern for the mold. It requires one pattern for one kind of mold.

Die industries

Die is the tool used in manufacturing metal through the use of a press. Like molds, each press customized into one specific kind of pattern.

Drilling holes

Drilling is characterized by cutting through the insides of the material with the use of helical screw. Drilling holes produce lots of chips (material debris after cutting). Most drillers pursue wire EDM services since it lessens the chips produce by drilling and it also produce more refined circumference and smooth insides.

Metal stamping

Stamping is process of manufacturing sheet metals by a press. Wire EDM makes it possible for a wrinkle free, no split backs and no material thinning from occurring. Wrinkles and thinning are usually attained from manual hammering of the press.

by: Susan J Morris

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