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painting galvanized

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发表于 2021-9-1 00:55:10 | 显示全部楼层 |阅读模式
I just built a hand rail out of galvanized. I bought the cold galv. primer but my dad was saying I should remove the galv with either white vinger or lemon juice before I prime and paint. I didn't do much with galv in school so I'm not sure what I should do.  Other option is to just spray the welds and let the metal in its natural.  What do you guys think?Laura MM 180Chop SawDewalt grinderhelpful husband
Reply:What do you want the finish of the hand rail to be?You can cold galvanize the welds and leave the railing just galvanized.  Or you can cold galvanize the welds, then prime and paint the railings.  Or you can strip the galvanizing off, then grind and wire-brush and sand everything, and then prime and paint the railings.Me?  I'd probably go option #2, cold galvanize the welds, then prime and paint.  Galvanize for corrosion resistance, and then prime and paint for a little more protection and for aesthetics.  Sort of a belt-n-suspenders corrosion prevention approach, with some lipstick to make it look pretty.
Reply:we used a lot of the galvanized when I worked at a papermill for platforms and stairs outside. The only thing we did was to use the galvanized primer on the welds. It was holding up good after 16 years when I left.
Reply:Mrs Pinklilly11,Where do you live in North Carolina if you don't mind me asking. I live a little south of the border in South Carolina about 20 miles from Rockingham. I have a daughter that does a lot of craft work and now wants to learn how to weld. She is 26 and is a social worker. I would teach her what little bit I know but I think then - I would never be able to find my tools again.
Reply:The vinegar will not remove the galvanized. It is an acid,kinda takes the shine off to make the paint stick better.Victor SuperRanger O/A                                         Solar migLincoln Powermig 140Southbend 9in lathe350# kohlswa anvilMiller Maxstar 150 stl etc....
Reply:Originally Posted by 6010Mrs Pinklilly11,Where do you live in North Carolina if you don't mind me asking. I live a little south of the border in South Carolina about 20 miles from Rockingham. I have a daughter that does a lot of craft work and now wants to learn how to weld. She is 26 and is a social worker. I would teach her what little bit I know but I think then - I would never be able to find my tools again.
Reply:Originally Posted by clark-kentskiThe vinegar will not remove the galvanized. It is an acid,kinda takes the shine off to make the paint stick better.
Reply:Hmm I learned something new today. Thanks.Love welding?  http://industrial-tools-equipment.com
Reply:i used to make dairy sheds/ cow sheads the were all made from galv pipewe just cold galv the welds.and there is a fair amount of water hosed overthem after each milking.just cant beat the ole cold galvthe day you stop learning in this tradeis the day your in your grave
Reply:I have done a lot of galv on cell towers.  The spray stuff does not work.  2 coats of brush on galv will hold up for ever.  I don't work on cell towers any more, but I have many quarts of the stuff.  I'll send you one if you want to go with the "Original" lookDavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Leave the galvanizing!  Some of the best primers are "zinc rich" because the zinc makes such a good preservative of the steel.Even if there were SOME benefit to taking it off, dealing with the hazmat afterwards would null that quickly.
Reply:a light sand blast prior to painting
Reply:also try vinyl wash
Reply:When we painted galvanized flashing we used a product called "Galva-Wash", just to allow the paint to stick. Save the lemon juice for the barbecue, use vinegar! City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
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