Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / praveen
Electric discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking or wire erosion,[1] is a manufacturing process whereby a desired shape is obtained using electrical discharges (sparks).[2] Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject to an electric voltage. One of the electrodes is called the tool-electrode, or simply the ‘tool’ or ‘electrode’, while the other is called the workpiece-electrode, or ‘workpiece’.
When the distance between the two electrodes is reduced, the intensity of the electric field in the volume between the electrodes becomes greater than the strength of the dielectric (at least in some point(s)), which breaks, allowing current to flow between the two electrodes. This phenomenon is the same as the breakdown of a capacitor (condenser) (see also breakdown voltage). As a result, material is removed from both the electrodes. Once the current flow stops (or it is stopped – depending on the type of generator), new liquid dielectric is usually conveyed into the inter-electrode volume enabling the solid particles (debris) to be carried away and the insulating proprieties of the dielectric to be restored. Adding new liquid dielectric in the inter-electrode volume is commonly referred to as flushing. Also, after a current flow, a difference of potential between the two electrodes is restored to what it was before the breakdown, so that a new liquid dielectric breakdown can occur.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
What are the causes of dirty lubricating oil?
What are the procedures on how to anneal?
where the compressor is placed in the automobile?
Please send rrb je mechanical question and answers model
HOW CAN WE MEASURE THE L SHAPE SURFACE OF THE MOMENT OF INERTIA AND SECTION MODULUS
why boiler is closed system ?
Explain the types of sensors and their explanation?
In General please do read newspapers.And be thorough with 10th history and Geography.Biology also
Which reactor uses heavy water as moderator ?
What is a diaphragm?
Define thermal conductivity.
What is the flow of steam in an impulse turbine?
What is knurling?
At 50 Centigrade (Diesel oil) what is its cast?
what is varible
