Electrical Discharge Machining

Electric discharge machining is the device which can perform the function that an ordinary machine can’t do. The strong metals that are impossible to cut can be stamped by the use of electric discharge machine. What electric discharge machine holds? The machine holds an electric field within which the metal is treated with electron. The heavy particles of electron are discharged on the metal piece which can easily perform the function of metal discharging. The metal such as titanium, kovar and carbide is used in the machine. Series of electron are used. The machine holds electrode on two sides. One is positively charged known as anode, and other is negatively charged known as cathode. The electrons are discharge from the cathode. The metal is kept within the cathode and anode. The electron moves from cathode to anode passing from metal in the middle and causing the metal to stamp. Electrical discharge machining is the process used in very famous and huge metal companies. The steel mills usually hold such techniques. This is the technique developed by the chemist. The discharge machine is dangerous as it can destroy the whole building if an error is occurred in it.

Advantages of electric discharge machining are:

1. Uses hard metal to cut into different shapes
2. Precise metal working is possible due to these metals.
3. Provides accuracy
4. Produce the design without any damage.

Disadvantages of electric discharge machining are:

1. It can’t use the non-conductor metals, as the electricity will not pass from them
2. Consumes time and thus causes the time cost
3. It is a very expensive method
4. The rate of material removal is very slow.

Wire electrical discharge machining (WEDM) known as wire-cut EDM, uses a thin strand metal wire and it is usually made up of brass. This wire is fed through the workpiece that is submerged in a tank. The tank is filled with dielectric fluid. The wire that is needed to cut requires constantly fed from a spool. The wire is held within the top and down diamond guides. The guides usually move in the axis of x–y plane. The machine is CNC controlled means that this is controlled by computer numeric control. The upper guide moves independently in the axis of z–u–v axis. The wire is controlled by the upper and lower guides and thus moves in different axis. The discharge machine then uses the information from the program and uses the wire to cut into different shapes. The guides help in cutting and shapping the wire. The thickness of wire formation depends on the amchines and the guides used. The guiedes are usually 3m in width. The machine can produce the accurate result and give the most delicate piece of work.

Electrical discharge machining manufacturing companies are few in number and provide machining that is safe to use. These manufacturer usualy use the cnc technology in order to keep the working of machine in an accurate form. The manufacturer usually form the machines in the specific numbers and enahnces their machines with time. The electric discharge machining requires the expert in chemical engineering in order to produce such types of machines.

Sinker electrical discharge machining is the most famous company that produces the accurate machine that can make a hole without using the process of drilling. Their machines use the eroding method. These machines are quite cheap and are safe. These machines use the latest technologies in order to provide the accurate metal stamping. The accuracy rate is .0005 that is not possible by using any other machine. The company is situated in America and holds the most expert engineers in their company.