CheckStein
I'm New Here
Hi folks,
I came here seeking some input for priming 6061 AL. My parts are not aircraft parts but you aircraft folks have some good info.
I am doing a 1k rattle can project and am seeking the best way to get primer to latch onto the AL.
I'll get to Alodine(1200) in a sec.
I am testing out some etching primers (SEM, VHT, SW 988).
I degrease, rinse, then lye etch the 6061, rinse, and then wipe the smut off, then prime. I do no scotchbrite or anything.
1) is nitric acid bath required to get rid of the smut before priming?
2) Next is, does the "Alodine" (now Bonderite) create a conversion layer that is better for primer to latch onto? My understanding of the Alodine conversion is to create a new conversion layer that has migrating properties to protect the AL from corrosion (caused by nicks & scratches, etc). But if I do not need the corrosion properties then is Alodine even needed?
3) Correct me if I am wrong, with the Alodine conversion layer you would not use a etching primer, it would be urethane or epoxy primer?
4) If I were to use Alodine in my process, would it be better to skip the lye etching and just use something more mild, like Alumiprep (also now a Bonderite name)?
5) If I used Alodine in my process, what 1k primer rattle can would make a super bond to the conversion layer?
Thanks for any info.
Chuck
I came here seeking some input for priming 6061 AL. My parts are not aircraft parts but you aircraft folks have some good info.
I am doing a 1k rattle can project and am seeking the best way to get primer to latch onto the AL.
I'll get to Alodine(1200) in a sec.
I am testing out some etching primers (SEM, VHT, SW 988).
I degrease, rinse, then lye etch the 6061, rinse, and then wipe the smut off, then prime. I do no scotchbrite or anything.
1) is nitric acid bath required to get rid of the smut before priming?
2) Next is, does the "Alodine" (now Bonderite) create a conversion layer that is better for primer to latch onto? My understanding of the Alodine conversion is to create a new conversion layer that has migrating properties to protect the AL from corrosion (caused by nicks & scratches, etc). But if I do not need the corrosion properties then is Alodine even needed?
3) Correct me if I am wrong, with the Alodine conversion layer you would not use a etching primer, it would be urethane or epoxy primer?
4) If I were to use Alodine in my process, would it be better to skip the lye etching and just use something more mild, like Alumiprep (also now a Bonderite name)?
5) If I used Alodine in my process, what 1k primer rattle can would make a super bond to the conversion layer?
Thanks for any info.
Chuck
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