I found your articles on Parts Cleaning on the Internet and decided to give it a shot.
Our company is researching the ways to chemically clean the graphite part from the deposited aluminum oxide. Any suggestions? I.M.
Without any more information it is quite difficult to answer your question. In general, if you are trying to remove graphite from aluminum, aqueous cleaning with quite a bit of mechanical force (agitation, sprays, etc.) would be helpful.