Anodize after welding
Posted by admin on November 26th, 2009 at 08:32pm
I heard lately from a friend about cracks in weld seams of an aluminum welded box, that was anodized after welding. The box served as an enclosure in a room, with standard room temperature and humidity. After less than three years, the weld seams cracked and some even broke free. An enquiry broght forward the answer that the acid used in the anodizing process, penetrated into the welding seams and served as a time bomb. After a couple of years, the seams disintegrated.
Is anyone familiar with this phenomenon and is it wiser to anodize before the welding process, or simply to switch to powder coating?
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