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Cleaning oxide layer thermal deburred parts

We are deburring aluminum parts at an external company, the problem we have, is the oxide layer on the surface.
In the normal cleaning line of the company, al parts are cleaned well, only our parts are not clean. The only difference there is, our parts are extruded products. To clean the products for a longer time is not working.

Van de Meeberg
aluminium business - Gelderland, The Netherlands
2006

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How clean is clean? Without sealing the metal surface, you will never get a clean part. Oxidation is a constant. The only way to protect it either speed up the oxidation process to almost stop it or to seal coat it.

AF Kenton
retired business owner - Hatboro, Pennsylvania
2006

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I know that on a aluminium part in normal surrounding, you always get an oxide layer.
I think I was not clear in my last message.
With thermal deburring (is the deburring proces), the burned burrs will leave an oxide-layer on top of the normal aluminiumoxide layer.
The oxide-layer on top of the normal one, looks like a white haze.
This haze is not allowed for our costumer.

Meeberg
- Gelderland, The Netherlands
2006

Your cleaner might have to be changed, or tweaked or run at a higher temp, probably with some mechanical agitation.If not, you may have to go to a mass finishing step.

James Watts
- Navarre, Florida
2006

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Before you follow a good suggestion by James, I suggest you check with the mfr of your thermal deburring equip. They should be able to answer your question and make recommendations to improve its performance.

AF Kenton
retired business owner - Hatboro, Pennsylvania
2006