Marine corrosion protection for equipment
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Our company plans to deploy some equipment at sea. Given the highly corrosive nature of the marine environment, we have applied three layers of enhanced anti-corrosion coating to the surfaces of the structural components (primer, intermediate coat, topcoat – with increased thickness). However, the electrical equipment (motors, etc.) remains basically the same as that used on land, and I think this poses a significant risk. Do any of you on the forum have any suggestions or opinions?:)
If the paint is chosen properly, there’s no need to worry too much. Electrical equipment should be made of materials resistant to seawater corrosion, or coated for protection.
Hehe, regarding the insulation of electrical equipment, I’m not sure if there are any special protections required for electrical equipment used at sea (on the surfaces of the stator and rotor), or whether it’s sufficient to apply a layer of ordinary surface paint (183/193) after the varnishing process is complete
You haven’t specified the type of paint used or the surface treatment method, so no one can give you an exact answer. The corrosion environment at sea is many times more severe than on land, which imposes very high requirements.
Hehe, the insulating paint is of the polyester imide type, while the surface paint is ordinary red enamel (commonly used in motor factories)
Corrosion at sea is much more severe than on land; many marine devices are made of nickel-based stainless steel. It would be best for the person in question to contact professional manufacturers such as CNOOC Service Company and CNOOC Construction Company
Preventing corrosion at sea is a very troublesome issue; the 304 stainless steel used in our company rusts terribly, as the air at sea is salty and causes severe corrosion
Current anti-corrosion coatings include polyurethane coatings, chlorinated rubber coatings, chlorosulfonated polyethylene coatings, fluororesin coatings, and neoprene coatings. It seems that using chlorosulfonated polyethylene coating would yield better results.
For anti-corrosion coatings used at sea, fluororesin coatings and chlorosulfonated polyethylene coatings are the better options.
Corrosion at sea is more severe; polyether polyurethane could be tried
Please refer to ISO 20340 or M501, which are the most authoritative and widely used standards in the field of coating corrosion protection.