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STRIPPING HARD ANODISED PARTS WITH MINIMUM COMPONENT METAL LOSS

2007

HARD ANODISED COMPONENTS 80mm DIAX 150mm 6061T6
50 MICRONS INEED TO STRIP THESE PARTS WITH AS LITTLE PARENT METAL LOSS
REGARDS,

BRIAN W.FOSTER
- WESTERN AUSTRALIA

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First of two simultaneous responses --

You will lose about 1/2 the anodize thickness per side when you strip. If you have a 0.001 thickness per side , you will lose half of that on each side or a minimum of 0.001 on an OD. It requires a lot of tender loving care to not lose more than that if the anodize has absorbed some oil or grease or paint or?

James Watts
- Navarre, Florida
2007

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Second of two simultaneous responses -- 2007

85% phosphoric acid 35 ml + chromic Acid 20 grams , water to make 1 LIter, 100 C, scale up arithmetic to fit.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

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A Chromic Acid/Nitric Acid/DI water mixture heated to approx. 175F does this quite well, with minimum attack on the substrate. It's nasty stuff though, and obviously a carcinogen. If interested in pursuing, reply and I'll look up the ratios for you. You also may able to buy a proprietary premade mixture.

Marc Green
anodizer - Boise, Idaho
2007

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I was mistaken in my response. Robert is correct when he says phosphoric acid, not nitric acid, as I said.

Marc Green
anodizer - Boise, Idaho
2007