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How to degrease aluminum honeycomb core? [Korea] 

August 11, 2008

Dear,

I have been using vapor degrease with trichloroethylene for cleaning aluminum honeycomb core.
But, I have to stop using it because of latest environmental regulation.

Can I use aqueous cleaning for cleaning aluminum honeycomb core?
Or, solvent manual cleaning?

Thanks in advance !

DC.Park

Dong-cheol Park
Chemical process engineer - Korea

Hi, Dong-cheol. The easiest fix, but it may be temporary, is to switch to an acceptable vapordegreasing solvent replacement like n-propyl bromide.

Converting to aqueous cleaning, while more difficult, may be the better long-term solution though. Usually ultrasonics are an important part of cleaning aluminum in aqueous solutions because both electrocleaning and strong alkalis are incompatible with aluminum.

Regards,

Ted Mooney, P.E.  finishing.com Brick, New Jersey