[AR] Re: Removing aluminum corrosion

  • From: Robert Watzlavick <rocket@xxxxxxxxxxxxxx>
  • To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
  • Date: Sun, 23 Jul 2017 15:33:25 -0500

I never anodized in the first place :( But even some of the commercial anodized fittings had corrosion on them from the water. I tried the Klean-Strip with manual agitation for about 10 minutes followed by some light sanding and it got most of the corrosion off. So I'd call it a success for now.

-Bob

On 07/22/2017 11:14 PM, johndom@xxxxxxxxx wrote:

Re-anodize ?
John

------ Origineel bericht------
*Van: *Robert Watzlavick
*Datum: *zo, 23 jul. 2017 04:44
*Naar: *arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>;
*CC: *
*Onderwerp:*[AR] Removing aluminum corrosion

I forgot to empty the water out of some my aluminum parts after a cold test and 
now there is white/gray corrosion on portions of the parts.  A stainless steel 
wire brush worked for the areas I could get to but I was thinking of using a 
chemical etch to get to the inaccessible areas. MIL-C-38834 is recommended but 
it's just 35-45% phosphoric acid and deionized water.  Klean-Strip Phosphoric 
Prep and Etch appears to be readily available.  Any suggestions?  Also, what 
does light corrosion do to the heat transfer properties of aluminum?  Do I even 
need to bother?Thanks,-Bob

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