Electrical Discharge Machining (EDM) – An Introduction

Electrical Discharge Machining (EDM) – An Introduction

Electrical discharge machining (EDM) has long been the answer for high accuracy, demanding machining applications where conventional metal removal is difficult or impossible.  Known by many other names, including spark machining, arc machining and (inaccurately) burning, the EDM process is conceptually very simple: an electrical current passes between an electrode and a workpiece which are separated by a dielectric liquid. The dielectric fluid acts as an electrical insulator unless enough voltage is applied to bring it to its ionization point, when it becomes an electrical conductor. The resulting spark discharge erodes the workpiece to form a desired final shape.

This course is a mix of both theory and practical applications ideal for those with little or no previous knowledge of Electrical Discharge Machining.

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The aim of this one day course is to introduce and instruct the delegate in the functions, setups and operational principles of the EDM machine.


Participants will:

  • Understand the foundation of features and specific controls
  • Understand key features, limitations and use within engineering environment
  • Understand part set up procedures
  • Wire EDM – How it works
  • Features of the machine tool and controller
  • Machine Technology MV Series
  • NC Programming
  • Job set-up

This programme uses a mixture of group discussions, pro-forma examples, information input sessions along with practical application to fully involve participants.