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Letter 4084
Stainless steel brown oxide
removal?
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I am restoring jet turbine engines for display purposes. This
involves cleaning of 316 and other high alloy stainless steels who
has been subjected to high temperatures ( 600 deg C to 900 deg C ).
Over time a very tenacious brown oxide has formed. To remove the
brown oxide by abrasive methods is considered impossible on these
complicated and thin walled and sometimes plated components (blasting
is not an option for this reason). Is there a simple brush-on or acid
bath or simple electro chemical method for removing this oxide
without going all the way to electro polishing?
Eirik Karlsen
- Norway
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