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I'm interested in phosphating parts directly after sandblasting for short-term storage capabilities before painting. I posted on an old thread regarding painting but got no response. I'll try a new thread here. Charles mentioned spraying phosphate liberally onto freshly blasted parts to provide rust protection and metal etching prior to painting. The research I have done since revealed mostly dip tank methodology or hot spray with specialized spray rigs. My question is this - is there a cold phosphate spray in a can or can i buy in bulk and use in my HVLP sprayer? I assume it would be iron phosphate as opposed to zinc or other but any additional information would be appreciated.
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ospho
skybrite corp.
brush on, 24 hr, rinse off -
Phosphating
I found the brand name Ospho under Skybrite Company (Skyco). Looks like a brush or spray application, then dry overnite. Easy enough. Thanks.Originally posted by 74w300uteline View Post
http://www.ospho.com/Comment
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I have used Picklex for this purpose. I wonder what product is best- Picklex or Ospho?
I think that the Picklex produces a coating of iron phosphate, and I have found that it does a pretty good job of stopping/slowing rust in vehicles under roof in a humid environment like here in the southeast. However, if there, is rain blown in the metal will still rust some.
If I am not going to paint within an hour or two of sandblasting, I always apply a product like picklex, as we get a flash rust pretty soon just from the moisture in the air.Comment
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Eastwood makes a product called "after blast" that I think is some sort of phosphoric acid. It works well, spray on, let it set, then wipe it dry. Just watch the fumes.
http://www.eastwood.com/eastwood-afterblast.htmlComment
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phosphate
I used POR15 metal ready on parts of my truck, left a white dust behind, according to the label it was supposed to be good for paint adhesion zinc phosphate if I remember. I didn't trust it so it was scotchbrited off before I shot the primerComment
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