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Ted Mooney, P.E. RET
Pine Beach, NJ

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Zinc coating on aluminum for non-conductivity

2004

Hi,

I am looking for a material to make a machine table for EDM machining. this requires the machine table to be non conductive. At the same time, mounting the work piece on the plastic part is not accurate. I would like to know more abt zinc plating on aluminum? does it make aluminum non conductive. Sandwiching a plastic sheet between two metal plates is one solution. But can anybody give me more info on how to make aluminum/stainless steel non conducting

Thanx in advance

Gurpreet Bedi
Mech. Engg - Singapore

Zinc is conductive. Anodizing your aluminum will provide a non-conductive surface. Hard anodize will have better dielectric properties and have added benefits abrasion resistantance.

Bill Grayson
- San Jose, California
2004

You can anodize the aluminum, that will make it non-conductive, harder, more corrosion resistant, and let you dye the part for cosmetic reasons.

Jim Gorsich
Compton, California, USA
2004

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