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Spark Erosion Services

Erosion Machining

Spark Erosion is a successful form of machining difficult materials, shapes and sizes this is because there are no cutting forces. With over 30 years’ experience in spark erosion, we deliver high specification spark erosion machining for your company.

Spark erosion is a very useful process in the engineering industry; it allows you to remove material in an extremely controlled way.

How does spark erosion work?

Starting with a workpiece (usually metallic) it could be steel or aluminium. You now need an electrode which can be any shape from a simple cylinder or complex polygon, CNC milled brush head or diaphragm!

The electrode is precisely mounted in the machine head and aligned with the direction of travel. When everything is positioned correctly the process can then begin. The workpiece is then normally submerged in dielectric liquid. The clever motion hydraulics and electronics allow the electrode to move closer to the workpiece, the small sparks jump between the electrode and workpiece gently cutting your workpiece. A hot plasma known as the spark (electrical discharge) melts the workpiece creating a puddle. It then vaporises a small amount of dielectric creating air bubbles around the spark. This is repeated roughly over 10,000 times in one second.

Clearing the working area is important; the head is located to flush the area, which can speed up the metal removal time. The result is related to the spark size, for example, big and long sparks result in a bigger depth which gives a rougher surface. The wear rate is related to the removal rate and the slower the removal rate is, the higher the wear. If you are looking for a finer finish than smaller sparks, low removal rates, and higher wear rates are needed. Some copper alloys have been designed for spark eroding and give a greater machinability and better wear resistance.

Sodick Wire EDM

The Sodick is one of the leading machines in the industry. Using automatic tool changers allows the machine to work extremely accurate and fast. One of the projects this machine has been used on is assisting in the manufacture of a run of Inconel components for a U.S. oil and gas customer.

Our spark erosion services are used throughout a range of industries including:

  • Gas and Oil
  • Nuclear
  • Aerospace

Here at MNB we own two ACU-RITE 111 CDH-2AM (high-speed EDM drills), and one SODICK A65R MK 21. Spark eroders are one of the most effective machines for dealing with difficult shapes or materials. The machine allows us to add very precise detail to even the hardest of materials.

What can we offer?

We have the capability to work with our clients on both their initial designs and design for manufacturability. We create the optimum solution for our customer’s needs.

We have a large team of fully trained staff that are equipped to run these machines. Having these machines allows us to offer a full service to our clients by completing the entire project onsite.

We would be happy to discuss any requirements or questions you have on spark erosion, or any of MNB’s other services, so please don’t hesitate to contact us on +44 (0)2476 695959 or drop us an email through our contact page.

Sodick A65R
Sodick A65R
Qty 1
X Axis (mm) 1000
Y Axis (mm) 700
Z Axis (mm) 450
Max length 3000
EDM Drilling CDH-2AMS
EDM Drilling CDH-2AMS
Qty 2
Max length -