Electric Discharge Machining

Electrical Discharge Machining (EDM) is the process of cutting metal to precise shapes using electricity.  EDM machining services makes it possible to work with metals for which traditional machining techniques are less effective. Compared to traditional machining methods, EDM machining equipment can work on any shape or configuration of parts, including those made of hard metals. With one of the largest EDM departments in Canada, Apollo brings together years of EDM expertise with advanced sinker and wire style EDM machines that utilize the latest computer systems. Our EDM Machine Shop allows us to manufacture parts that cannot be drilled, tapped, or milled in small, detailed and hard-to-reach areas.

Sinker EDM – Sparks of Genius

Sinker EDM uses an electrically charged electrode that is configured to a specific geometry to burn the geometry of the electrode into a metal component made from either Copper, Graphite or Tungsten. Within a dielectric bath such as oil or deionized water, a spark is created between the electrode and workpiece to burn the geometry of the electrode into metal workpieces. Also known as conventional EDM, plunge EDM or Die-Sink, this process is ideal for sharp corners, internal keyways, splines, hexes or cavities. At Apollo, we offer the most precise and accurate sinker EDM using 13 sinker-style machines with 30″ × 20″ extended tanks, with an attainable tolerance of 0.0001″.

Wire EDM – Doing What Others Cannot

Also known as Wire burning or cutting, Wire Electrical Discharge Machining uses a thin wire electrode (0.005″–0.010″ in diameter) made from brass or copper to cut conductive material along a pre-programmed path. There is no contact between the wire electrode and the workpiece. Instead, like the sinker EDM process, the spark discharge erodes the material. Wire EDM is ideal for machining complex parts and precision components out of hard, conductive materials such as titanium, inconel and carbide. Apollo is equipped with three wire-style machines with 47″ × 27″ tables and a 15.75″ maximum height. Four axes allow for tapered cuts. We take pride in our ability to take on any job regardless of the complexity. Through our state-of-the-art EDM department, we manufacture parts that would not be possible with conventional machining.