Need corrosion resistant coating on AL explosion proof enclosures
Need corrosion resistant coating on AL explosion proof enclosures
(OP)
Gentlemen,
I'm new to the forum and hoping for a bit of guidance on a project for one of our customers.
We've been asked to supply AL explosion proof enclosures for electrical components, mounted on the decks of barges. In the past, one step epoxy coatings have been applied without success (3-6 months). I'd like to assume the manufacturer had prepped the units properly before coating.
My thoughts were to look at products similar to Alodine EC2. We also use 316 SS bolts to secure the door on the unit. I'd also like to use a application shop in the Seattle area, but a recommendation may be against the forum rules.
The objective is to apply a coating that may last 2-3 years, if possible.
Thanks in advance for your help.
Sincerely,
Mike K.
I'm new to the forum and hoping for a bit of guidance on a project for one of our customers.
We've been asked to supply AL explosion proof enclosures for electrical components, mounted on the decks of barges. In the past, one step epoxy coatings have been applied without success (3-6 months). I'd like to assume the manufacturer had prepped the units properly before coating.
My thoughts were to look at products similar to Alodine EC2. We also use 316 SS bolts to secure the door on the unit. I'd also like to use a application shop in the Seattle area, but a recommendation may be against the forum rules.
The objective is to apply a coating that may last 2-3 years, if possible.
Thanks in advance for your help.
Sincerely,
Mike K.





RE: Need corrosion resistant coating on AL explosion proof enclosures
What happened to the epoxy coating? Did it scale? Then I would guess the surface preparation (degreasing) wasn't done correctly.
RE: Need corrosion resistant coating on AL explosion proof enclosures
Yes, the "AL" is aluminum. As I've not been out to the site, I'll have to have photo's sent. By the customers description, scaling had occurred.
My thoughts are that if I have the coating done locally, I'd have better control over the process.
Any other comments you may have?
Mike K.
RE: Need corrosion resistant coating on AL explosion proof enclosures
RE: Need corrosion resistant coating on AL explosion proof enclosures
RE: Need corrosion resistant coating on AL explosion proof enclosures
Thanks for your responses.
The makeup of the enclosure is listed as "copper free cast aluminum". It is 100% exposed to salt water.
The manufacturer lists the finish as "Standard Aluminum lacquer paint".
After reading a bit more, my thoughts are to suggest a hard coat anodizing if they want a durable finish.
Any experience with this HCA finish?
I could also check with a local waste water treatment plant as they use the explosion proof units in some corrosive environments.
I appreciate your input.
Mike K.
RE: Need corrosion resistant coating on AL explosion proof enclosures
RE: Need corrosion resistant coating on AL explosion proof enclosures
I appreciate your input. You've provided the help I need. I have a request for the type aluminum, 5000 or 6000 series. With that info in hand, I'll then call one of our local shops, such as ASKO Processing.
I do have the option of ordering W/O coating (i.e., natural finish).
Again, thanks for your help. Have a great holiday season.
Cheers !
Mike K.