Hi Deepak,

The difference is that, as between welding and eroding.

Of course, I can use a tungsten electrode (welding) to erode, but normally the welding electrodes are inaccurate and not profiled, that means it can only be an EDM milling or hole sinks are performed.

In principle, however, EDM electrodes and welding electrodes have been different. When welding I want a melting of the electrode into the joint, while the contour (electrode negative or milling structure) I shall be ready in the workpiece during EDM.

Best Regards

Hans-Peter

Hi Deepak,

The basic difference between welding electrode and EDM electrode is the modes of metal transfer. In welding current is continuous while in EDM, curent is high frequency and discrete in nature. hence the thermal loading of both the electrodes are different which govern the modes of metal transfer.

Yes you can use tungsten electrode for EDM drilling, however the final performance of the electrode is required to be evaluated.

Regards,

Hello,

Could you please kindly let me know why you are asking this question so that I can write a right answer.

Thank you,

Salah

Okay, the differences are in shape, alloy and their functionality.

EDM: you can form any shape that you need

Welding: only rods with small dia. are available

They have different chemical composition

EDM: the electrodes are eroding the work pice

Welding: the electrodes are melting the the workpiece/electrode/filler

Current

EDM: using DC

Welding: using AC and DC