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Old 03-09-2006, 09:52 AM
seanc seanc is offline
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Join Date: Jun 2003
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Default Re: de-smuting zinc die-cast

Hi Dave:

I'd be interested in your electroclean process. What chemical(s) are you using in the bath?

I tried my first carb body a couple of days ago. After degreasing, I soda blasted it, which worked well, but takes more time and media than bead blast. Nice part is the baking soda doesn't etch the surface or embed at all, and just dissolves in a water rinse.

However, after blasting and acid activating, it would not chromate at all, so I'm working on the assumption that this particular carb body is not zinc die-cast at all, or contains too little zinc to be receptive to chromate.

Sean
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