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Galvanneal or Galvanized?
for Shops, Specifiers & Engineers
"Hot Dip Galvanizing of Steel Structures" by Kuklik & Kudlacek (2016)
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"Handbook of Hot Dip Galvanization" by Maass & Peissker (2011)
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"Galvanized Steel Reinforcement in Concrete" by Stephen Yeomans (2004)
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"Hot Dip Galvanizing -- A Guide to Process Selection & Galvanizing Practice" by M. J. Hornsby (1995)
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"Faults in Hot-Dip Galvanizing" by Dietrich Horstmann (in English, French & German)
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"User's Guide to Hot Dip Galvanizing for Corrosion Protection in Atmospheric Service" by NACE (1997 only rarely avail.)
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Our company uses an automotive paint finish over galvannealed sheetmetal. With the costs of steel rising quickly I'm trying to find ways to bring down our costs. When the product is in our paint department it is prepped by grinding the surface of the steel with 36 grit sanding discs which essentially eliminates the A60 galvannealed coating. I'm trying to convince the people who make these decisions that we should be using galvanized steel instead. Are there any reasons why galvanneal would still be a better choice? I'm in no way an expert on metals and finishing so I'm looking to you guys for some guidance and I thank you in advance for your help.
Jacob Johnsonmanufacturing - Roanoke, VA, US
Galvanneal is just galvanized in which iron has been added to the molten zinc bath. This improves paintability. Your best bet is to determine why so much sanding has to be done and try to reduce this.
Ronald ZeemanCoil coating - Brampton, ON, Canada
2004
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