Wire, Sinker EDM and Micro-Drilling:

Wire EDM, Sinker EDM, and micro-drilling machining for hardened steels, high-speed steels, and tungsten carbide (Widia).

Electrical discharge machining (EDM) allows us to process conductive materials of all types and to create complex geometries by interpolating 4 axes, with the 5th axis (Z-axis) used for positioning.

WIRE EDM

Wire electrical discharge machining (Wire EDM) is a technology that enables the erosion of a raw workpiece using electrical discharges.
The component to be machined is typically submerged in a tank filled with dielectric fluid and connected to a negative polarity. The machine’s electrode, which performs the erosion, is a wire—usually made of brass or copper—charged with opposite (positive) polarity, allowing the actual erosion process to take place.

Wire EDM is extremely precise and allows us to guarantee high versatility, fast execution, and reliability in the production of components with tapered geometries or complex interpolations between shapes of different morphologies.

SINKER EDM

Sinker EDM also operates through the erosion of metallic material to produce specific shapes or cavities. The erosion occurs in an insulating fluid through electrical discharges generated by a shaped electrode, which produces heat and sparks upon contact with the metal surface.
The dielectric fluid ensures better electrical conductivity, improving the machining process while also flushing away debris and machining residues.

This process is ideal for achieving clean, precise, burr-free surface finishes, and is particularly suitable for components requiring high precision on difficult-to-machine or heat-treated materials.

MICRO-DRILLING EDM

Micro-drilling is performed using a known-diameter electrode, typically made of copper or brass depending on the material to be machined, combined with a dielectric fluid flush.
This technique is highly versatile and can be applied to hardened steels or carbide, allowing the creation of small-diameter holes with considerable depth—ranging from 0.3 mm to 3 mm in diameter and up to 200 mm in depth.

These EDM processes are integrated within our production department and are carefully selected based on customer specifications and the requirements outlined in the technical drawings.

ADVANTAGES OF EDM MACHINING

  • Capability to process even small mechanical components
  • No material waste
  • Increased machine autonomy
  • Suitable for virtually any conductive material