Follow Kingred Electrical Discharge Machining for Updates

What is WEDM?

Wire electrical discharge machining, WEDM, is a specialized subset of electrical discharge machining (EDM). It employs a continuously fed, thin metallic wire (e.g., brass or molybdenum wire) as an electrode to thermally erode electrically conductive materials through controlled spark discharges. 

This non-contact process enables high-precision cutting of intricate geometries and hardened materials without mechanical force.

WEDM Working Principle

1. Spark Generation: A pulsed voltage is applied between the wire electrode and the workpiece, creating repeated electrical discharges across a narrow gap filled with dielectric fluid (typically deionized water).  

2. Thermal Erosion: Each discharge generates localized temperatures exceeding 8,000°C, vaporizing or melting microscopic portions of the workpiece material.  

3. Continuous Process:  

• The wire moves axially at a controlled speed to maintain a fresh electrode surface.  

• Dielectric fluid flushes away eroded particles, stabilizes the spark gap, and cools the workpiece.  

• CNC-controlled axis movement progressively cuts the desired profile.