One technique, many advantages

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This is a cold, non-contact machining method involving no added heat. As a result this technology offers many advantages over conventional metal machining techniques.

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The advantages:
  • No process-related electrode wear
  • Roughness down to Ra 0.05 µm is achievable
  • Rough machining, chamfering and polishing in one step
  • No white layers
  • No heat stress on the material structure
No process-related electrode wear

A single electrode can be used to produce a virtually unlimited number of identical parts. This means the technique is equally suitable for either small-scale or mass production, or indeed for prototype manufacture. And doing forming jobs at short notice is also no problem since the electrode is ready for immediate use: there is no need to produce one specifically for the job.

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Roughness down to Ra 0.05 µm is achievable

… which means there is no longer any need for finishing work on the workpiece.

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Rough machining, chamfering and polishing in one step

Different electrodes are not needed during the process so there is no need to change electrodes. (sic)

No white layers

The workpiece will have a longer service life due to the fact that with this technique no white layers are formed. 

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Clearly visible: the white layers and microfissures on a
conventionally machined workpiece.

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By contrast, a surface machined using the PECM technique
is free of white layers and microfissures.

No heat stress on the material structure

The absence of any thermal or mechanical stresses means that the workpiece does not undergo any material changes or develop microfissures, nor is there any heat-induced distortion of the workpiece’s shape.

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Clearly visible: the white layers and microfissures on a
conventionally machined workpiece.

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By contrast, a surface machined using the PECM technique
is free of white layers and microfissures.

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