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topic 6307

BLACK ANODIZE TURNS RED


(2000)

WHY WOULD SHELLS MADE OF 6262 ALUMINUM THAT ARE BLACK ANODIZED TURN RED?

BILL HUMES
CONNECTORS - LOMBARD, IL., U.S.


(2000)

Poor sealing! or Needs Inorganic dyeing as our process Ano-Med Anodizing for the Medical Industry ( Non-Fading )

Max T. Faeth
- Los Angeles, California, USA


(2000)

I'll agree with Max on the part about poor sealing part. There are also other things that can cause this problem. Check the pH on your dye tank(s) make sure its within range, and also check the tank for chlorides in the dye. They are most notorious for causing pitting problems in a dye tank but in my opinion nothing can be ruled out until you actually rule it out.

Matthew Stiltner
- Toledo, Ohio



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