Primers for galvanized metal
Looking for cheap method for priming galvanized metal before painting a way to make paint stick to galvanized metal using preferably polyester resin
Thank for your help
Hi, Menier. The answer depends on whether you are a manufacturer wishing to do this in-house on thousands of parts, or an end user trying to paint one object, though. There are primers that are intended to provide good adhesion on galvanized surfaces. But if you are a manufacturer, a zinc phosphate pretreatment system will prove better than a can of primer. The topic is the subject of a FAQ here. Good luck.
If you already are set-up to paint galvanized, I have had excellent success in the past with using an acid etch primer. Acid etch primers are best used when a chromate is not applied over the galvanized coating. One must specify to the galvanize processor to omit the chromate. There are countless articles on painting galvanized material.Ward Barcafer, CEF
aerospace - Wichita, Kansas
i need your articles(your best method)MOON GU,OH
I have got some big galvanized gates to prime and paint. I think there is chromate present in the galv; (it's shiny!) What's the best way to prime this surface ?Peter O'Callaghan
building - Charente, France
Ideally they would be sent to a shop for a phosphatization process, Peter. This may not be practical for installed gates, leaving you to scrub them with trisodium phosphate, and apply a Galvanized Metal Primer. Good luck.
Ted Mooney, P.E. RET
Brick, New Jersey