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Hard coating for Zinc die-cast part?

2004

I have a Zinc Alloy diecast part. It mates with a powder coated surface in use. The alloy is so soft it basically acts as a pencil and marks the surface of the white powder coat and looks unsighlty. Changing the Alloy is not an option right now.

Anyone know of a coating process which will "seal" the Zinc surface and give me something hard which will not mark the other surface. I will even consider a sputtering process.

The surface in question is inside a .125" x 0.250" slot. There is pretty much an interferance fit so powder coat would be too thick for my appplication.

Any ideas?

Jon CONNELL
Lighting Manufacturer - Highland, New York

Hi Mr JC,

Any metal you plate onto zinc diecast would be harder than the diecast; this might aggravate the condition. However if you just zinc plate over the zinc diecast, it might serve to smoothen out the r.a. on the surface and might help a bit. You might want to look at teflon coating the diecast if you have the tolerance.

good luck

Khozem Vahaanwala
Saify Ind

Bengaluru, Karnataka, India

2004