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The authoritative public forum
for Metal Finishing 1989-2025
Thread 279/38
Powder coating on galvanized sheet
Dear sir
Can I paint powder on galvanized, especially metallics ?
NADEEM ZAKI AL SHAWAREBsales man for powder - AMMAN, JORDAN
2004
publicly reply to NADEEM ZAKI AL SHAWAREB
2004
You can. Adhesion is tricky, so a proper pretreatment (perhaps 8-10 stages) is essential. This should be either Zn phosphate or Cr.
Geoff Crowley
Crithwood Ltd.
Westfield, Scotland, UK
publicly reply to Geoff Crowley
HI NADEEM ZAKI AL SHAWAREB
First you can paint electrostatic powder in alkaline galvanized steel but without brightener. but maybe with these method some defect will be case such as bad adhesion and bad finish surface (impurities) so you must first pretreatment and phosphating the galvanized steel before painting it or use normal steel.
Aly Gomaa- Cairo, Egypt
2004
publicly reply to Aly Gomaa
July 19, 2010
In the 8-10 stages, will the galvanized, zinc coating be totally removed? We have a requirement of having the galvanized sheet be powder coated. How can we be assured that the delivered product used galvanized sheet instead of the normal steel?
VICTOR GAA- Quezon City, Philippines
publicly reply to VICTOR GAA
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