steveonmars
Plastic
- Joined
- Dec 26, 2019
I make small parts out of galvanized steel fence that is welded. Before I can paint them I clean the parts in an acid bath to clean the galvanized coating off and to remove the rust that is almost always present in the weld where the two pieces of wire connect. I make 1000's of these parts ahead of time and paint them all at once. After the parts are clean I rinse the parts off and dry them in a shop made tumbler that blows hot air on them while they tumble to dry them. The parts look great until the next day when I get ready to paint them and find that half of them are rusted already.
I need to find a way to prevent these from rusting over night so they can be painted, or even better, for a week or longer so I can make even more ahead of time. I can't oil them or use anything will will interfere with the adhesion of the paint or I'm right back to cleaning them again. I need to be able to paint them without spending a lot of time getting them ready since it already takes all day to paint them in the quantities I need to get done.
I've left them in buckets of water overnight and that works but then I need to spend hours I don't have drying them. I tried putting them in the shop's refrigerator thinking the lower humidity would help and that worked great until I took them out. The warmer air in my air conditioned shop caused condensation that need to be dried, again taking a lot of time.
I haven't been able to find any answers on this forum or on line but I thought somebody might have an answer for me. Everything I've found about preventing rust on line basically talks about different coatings that cover the metal.
Thanks,
Steve
I need to find a way to prevent these from rusting over night so they can be painted, or even better, for a week or longer so I can make even more ahead of time. I can't oil them or use anything will will interfere with the adhesion of the paint or I'm right back to cleaning them again. I need to be able to paint them without spending a lot of time getting them ready since it already takes all day to paint them in the quantities I need to get done.
I've left them in buckets of water overnight and that works but then I need to spend hours I don't have drying them. I tried putting them in the shop's refrigerator thinking the lower humidity would help and that worked great until I took them out. The warmer air in my air conditioned shop caused condensation that need to be dried, again taking a lot of time.
I haven't been able to find any answers on this forum or on line but I thought somebody might have an answer for me. Everything I've found about preventing rust on line basically talks about different coatings that cover the metal.
Thanks,
Steve