Echo North said:Usually copper plating. It actually functions better as well since the grounding has better continuity throughout the chassis.
Mike
12volts said:Very simple. It's Zinc Chromate. Very good on mild steel and it's cheap. I've spec'd it on loads of sheet metal work job over the years.
Frank B
You are describing a cheaper process, such as galvanized or galvaneal. Indeed, the edges do rust over time, which is why I stopped using this a few years ago. My metal fabricator laser cuts the cold rolled steel, then zinc plates it, and then applies a clear coating. They do so because I specify it as such and pay extra (which still isn't very much). The gold iridite and yellow dichromate conversion processes that the original poster is asking about are done in a similar manner, with the parts being dipped AFTER fabrication.abbey road d enfer said:Electro plated steel comes in pre plated protected sheets.
Your metalworker will punch, bend, drill, tap, and so on and take the adhesive protection at the last moment, so you don't have to take care of finding an electroplating company.
It leaves the edges unprotected and susceptible to rust though.
That's how 90% of chassis are made today.
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