How does spark erosion work?

How does spark erosion work?

Spark erosion is conducted through metal disintegration machines (EDM). These machines use electrodes to send low voltage/ high current electrical charges that melts the designated piece of metal at the same time cold water thermal shocks the molten steel and pulverizes it into micro size pieces and flushes it away.

What is eroding machine?

The eroding machine can also be used as a tool grinder for production and re-sharpening of carbide tools. The change of tools from PCD material to carbide tools is “hot,” because the change between PCD tools and carbide tools and vice versa can be made automatically.

Can you spark erode Aluminium?

If materials have a minimum electrical conductivity of 0.01 S/cm, then it’s likely they can be machined with spark erosion. For example, most metals and alloys can undergo this process, including copper and its alloys, tungsten, many stainless steels, carbide, aluminium, and magnesium alloys.

How Fast Is spark erosion?

The small amount of dielectric is vaporised which creates bubbles around the spark. On average, this process is repeated over 10,000 times per second.

How is spark produced in EDM?

In EDM, the flow of electricity between the electrode and workpiece introduce the heat in the form of a spark. The main characteristic of the dielectric fluid is that it works as an electrical insulator, until enough voltage is applied to cause it to change into an electrical conductor.

Why kerosene is used in EDM?

In EDM, tool is completely submerged into the Kerosene and that too there is no oxygen available hence the spark cannot sustain. Moreover kerosene is a bad conductor of heat so thats why it is used as a coolent in EDM process.

What is spark gap in EDM?

Electrode gap (spark gap) is the distance between the electrode and the part during the process of EDM. This energy is created between a workpiece and an electrode submerged in a dielectric fluid with the passage of electric current.

What is spark erosion in ship?

What is Spark Erosion? Technically, when two current carrying dissimilar metals are in contact, a sparks travels at the point of contact which erodes the small metal by making a cavity. In a Vessel, different metals are used to building propeller, hull, bedplate, crankshaft, bearing etc.

What materials can you EDM?

Any conductive material such as steel, titanium, aluminium, brass, alloys and superalloys can be cut using the EDM wire method. With its accuracy, the EDM wire cut technique has become a convention cutting method in all industries. Machine parts, logos and other metals can be cut and made with ease using EDM wire.

How accurate is spark erosion?

Solid sink spark erosion can deliver accuracy of approximately 6 microns, often faster, more economically, and with greater guarantees of accuracy than conventional machining techniques.