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Topic: Aluminum Alloy Oxidation issue.  (Read 3732 times)

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Offline chang9881

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Aluminum Alloy Oxidation issue.
« on: May 03, 2010, 09:08:52 AM »
Well I am very much new to this forum and not even student of chemical engineering. I am in to automobile field. So i don't understand chemical theory a lot...infact may be this posting is in wrong section too..

Well as we know chemicals are heavily involved in automobile abut also metal.
Some gets rusty and some affect by oxidation.

Now my question is regarding aluminum alloy oxidation.
Since in automobile the usage of aluminum alloy is heavy due to that some spares get stuck badly and removal becomes very hard. For example carburetor, carb is made up of aluminum and air screw made up of brass. the hole for air screw is very small and so the head of air screw..This screw generally gets stuck in the hole very hard way due to oxidation of aluminum. Right now all we can do is to drill the screw and remove it but risk is 99% while doing this job coz rotation of drill is very fast which sometimes damage the threads and then we have no choice other than trash..So i want to know which chemical can remove the oxidation which stuck ups the screw inside the thread?
Remember I want to save the screw as well as carburetor too..
Waiting for reply very eagerly...


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