any idea...how to eliminate the Aluminum oxide from the Aluminum surface..?
485667
aluminium oxide is just a thin white layer formed on the surface of Al due to corrosion.as it is only a protective layer it can be removed by SCRUBBING THE SURFACE WITH SAND PAPER OR THE LIKE.
817601
try the local chemist....
1101069
You can try Muratic Acid ( dilute 4 parts water with 1 part acid )\nMix in a 5 gal bucket , pour on tire marks then scrub with a stiff bristle broom and hose off . That should do it but do not breath the vapors , I recommend wearing a protective mask ( available at your local hardware store ) .
412358
You could skip the Nitrogen Oxide and use Nitrous Oxide.   :o)
191941
I use Goo Gone and then just take a scraper and scrape it off.  Add some rubbing alcohol if that fails.
600507
Chop it off!  Why did you put vinegar onto a brown spot anyways!!  Put baking powder onto it if you want to reverse the effect of the vinegar.
209656
Calcium/ rust buildup. First, you can try ordinary vinegar. Take off the head and soak the piece in vinegar overnight. That may dissolve the calcium. If not, try CLR or similar product, they work wonders!
373023
Ultrasonic cleaners might be the best solution.\n\nHere is an excerpt from the source listed below: \n\nAlthough a range of possible alternative products is available today, experience has shown that substitution of TRI is not easy and even not feasible for a number of specific cases, either for technical or economical reasons. For all cases, substitution of TRI needs a thorough evaluation of all process aspects. For this reason we intend to work with the authorities in order to prevent a blanket implementation of forced substitution, and allow sustainable and continued safe use of TRI. \n\nThe alternatives you will probably consider first are the chlorinated solvents perchloroethylene (PER) and methylene chloride (MC). They match closest the technical features of TRI, such as non-flammability, high solvency power, a wide range of material compatibility and excellent drying and recycling properties.\n\nBeside PER and MC, you have probably also heard about other alternatives such as aqueous (water-based) alkaline systems, flammable solvents (e.g. hydrocarbons or modified alcohol based formulations), supercritical CO2 or hydrofluorocarbons (HFCs), etc.\n\nIt is impossible to say definitively which technology is best. That depends on your specific application, on what you are cleaning, which materials you want to remove, the cleanliness required, the variability of the parts cleaned, the throughput to be achieved, the cycle times, etc. \n\nFor example, for the cleaning of parts between two water-based manufacturing steps (e.g. galvanising), aqueous systems may be better, since parts are put into water phase again later and no energy-intensive drying step to remove the water is required. \n\nIf you need to have very clean and dry surfaces (for coating or surface hardening, for example) and if you have a variety of different metals or blind holes, narrow distances and very fine orifices or a lot of residual oil to clean, hydrocarbons or aqueous systems may not clean and dry well enough. In these cases, chlorinated solvents will offer most often the best solution as they are compatible with most materials, have a high cleaning power, are easy to dry, don't leave residual films and are easy to recycle with high quality by distillation. In addition, chlorinated solvents are today best suited to be used in modern closed systems with minimal losses. Their ecological performance has very much increased and, when used in well-operated metal cleaning systems, they outperform aqueous cleaning as long as drying is required. This has been shown by a Life Cycle Analysis carried out by Ecobilan. \n\nPER comes closest to TRI in technical performance and is often the first choice candidate as an alternative to TRI. However, it shows clear inherent technical differences, which need to be taken into consideration. On one side, PER offers a lower volatility and therefore is advantageous to minimise emissions in closed equipment. On the other side, PER has a lower solvency power and is therefore normally used at a higher cleaning temperature to achieve similar performance. This may raise concerns regarding the compatibility with specific metal working fluids and temperature-sensitive parts. \n\nMethylene chloride (MC) shows excellent cleaning properties already at low temperatures, favouring the cleaning of temperature sensitive parts. However, its high volatility makes emission control more difficult and requires special equipment.\n\nHydrofluorocarbons (HFC) and hydrofluorocarbon ethers (HFCE) are very expensive and show very limited solvency power. A thorough evaluation of the global warming potential is also required to choose the adequate product.
913792
I found a very informative essay at the below address, which covers the removal of Alumina from Its Bauxite Ore.  The process is very complex because Alumina is not actually found in its raw state as part of the Bauxite compound.  Bauxite is heated and then through a process of chemical electrolysis alumina is extracted and forms aluminium.  More precise explanation can be found at below address.     \n\nhttp://www.patana.ac.th/parents/curriculum/Chemistry/units/LR803.html
368966
Normally I just wipe it off with hexane. But if I really want to destroy the silicone, I just dip it at least overnight in a KOH-Ethanol bath. That's just lots of potassium hydroxide dissolved in ethanol. Be careful as it is very corrosive and can cause blindness if it gets into your eyes. Wear goggles and use gloves.
71181
to prevent rust/oxidation
22203
AL2 O3 (Aluminum oxide)
841776
Skip the dry cleaning.  That's just unhealthy anyway.  Soak the pieces in baking soda, with hot water.  You can also soak them in vinegar, but not at the same time, since that could cause corrosion.  Make sure one is completely rinsed out before you do the next soak.\n\nIf that still doesn't work (though it should), just tell your friend that these pieces were damaged accidentally and exclude them.  Or  you can just tell her the truth.  She sounds like a good friend who would understand.
84239
Try heat. (Or wire strippers if it is infact a wire.)
1144170
Here is a great clean-up utility that deletes temp files and items that may not be needed.  Be careful with the setting as it is very good at what it does. \n\nWindows Clean-up
611943
take a large sheet of aluminum foil, spray oven cleaner all over it, fold it up and put it in a 2 liter soda bottle (plastic is safer), tighten the lid and throw it, or stand back. - do this outside.
677156
Stains on the screen?  I don't know about that.\n\nYou may be able to use (like) "Ajax with bleach" on plasic parts.  (Dab it onto a damp cloth or sponge and rub over stain.  Rinse well.)