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Wire EDM has the following categories:

1. Brisk wire EDM wire cutting

The wire speed is 6-12 mm/s, and the electrode wire moves back and forth at high speed, resulting in poor cutting accuracy.edm machining service。

 

2. Middle wire EDM wire cutting

It realizes the function of frequency conversion multiple cutting on the basis of fast-moving wire cutting. It is a new technology developed in recent years.

 

3. Slow wire EDM wire cutting

The wire speed is 0.2mm/s, and the electrode wire moves in one direction at a low speed, and the cutting precision is very high.

 

Physical Principles of Wire EDM

Free positive ions and electrons accumulate in the field and quickly form an ionized conductive channel. At this stage, a current is formed between the two plates. Resulting in countless collisions between the particles, forming a plasma zone, which quickly rises to a high temperature of 8000 to 12000 degrees, instantaneously melting some materials on the surfaces of the two conductors, and at the same time, due to the vaporization of the electrode and the dielectric fluid, a bubble is formed. And its pressure rises regularly until it is very high.

 

Then the current is interrupted and the temperature drops suddenly, causing the bubbles to explode inwardly. The generated power throws the melted material into the crater, and then the corroded material recondenses into small spheres in the dielectric fluid and is discharged by the dielectric fluid. Then through the monitoring and control of NC control, the servo mechanism executes to make this discharge phenomenon uniform.

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