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Jonny5
Associate

Join Date: Jul 2006
Posts: 53
Good Answers: 2

Wire EDM heat (heat affected zone)

01/17/2008 10:15 AM

Guys,

Can ye settle an agrument. What is the minimum size of the recast layer & heat affected zone achieved when wiring (EDM) a finishing cut on say: a punch 5mmx5mmx50mm. Pre-hardened D2 57-60HRC.

I do not have setting for the wire machines finishing cut - general answer will suffice

This argument arose when deciding to use the punches without finishing grinding.

Regards

Jon
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ralliv45
Member

Join Date: Nov 2007
Posts: 9
#1

Re: Wire EDM heat (heat affected zone)

01/18/2008 12:30 AM

you will have a problem on the sharpness of the cutting edge if you do a wirecut finish not only the surface finish but also on the hardness.
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JohnV
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Join Date: Oct 2007
Location: Cleveland, Ohio USA
Posts: 35
Good Answers: 2
#2

Re: Wire EDM heat (heat affected zone)

01/18/2008 10:15 AM

I think on newer machines it can be as low as .0001" and on older machines it is more like .001" to .002".

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