sdavo
Contributor
Thanks for the burst disc explanation.
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Rustproof steel protection by hot-dip galvanizing Corbec
Since corrosion is an electrochemical process, it will attack the surrounding zinc rather than the exposed steel. Contrary to other types of processes claiming to provide corrosion protection, it is not required to touch-up noticeable cracks, flaws or gaps on galvanized coatings as they are self-healing.
I'd be nervous about aftermarket hot dip galvanizing. The 800-900F temperature is getting kind of close to the annealing temperature, and that temperature is timed. I don't know what it would do to the heat treating. Any engineers or metallurgists on the board who might care to comment?
I've had decent luck with cold galvanizing compounds so far. People speak well of ZRC and say it works better than the stuff I've used, but I have not tried it yet.
What's a unidirectional burst disc? How does it differ from a modern burst disc?