Corrosion issues in composite plate columns
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There is a tower made of Q345R composite 316L (3+20) composite plates, and extensive corrosion has occurred on its internal lining (it is preliminarily believed that this is due to high chloride levels during the manufacturing process). I would like to ask the experts for any good solutions for repairing this equipment Also, are there any coating-type anti-corrosion substances that can be applied to address the corrosion issue?
If the area of corrosion is small, it can be welded; but if it’s large, replacement is the only option
Do you mean replacing the entire device when you talk about replacement? The equipment is very large, and Party A will hardly agree to replace it.
Strip-shaped or small-area surfacing welding, larger-area plug welding
When the chloride ion content is high, a duplex steel coating is required at the very least; austenitic stainless steel will not suffice. This is the owner’s responsibility
It’s impossible to keep using equipment with extensive corrosion without replacement; simple repairs definitely won’t suffice. I’ve never heard of any anti-corrosion measures for equipment that is still in use