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Aluminum Weld Contamination Due to Punching Fluid

Aluminum Weld Contamination Due to Punching Fluid

Aluminum Weld Contamination Due to Punching Fluid

(OP)
Hello,
  I am a young mechanical at a aluminum fab shop.  We weld most of our connections and I have been having a serious problem with weld contamination from of punch fliud.  I realize the importance of cleanliness for aluminum welding but it is essential that I use some type of cutting fluid mixture for our turret punch.  Currently we use a mixture of cutting fluid, transmission fluid and water on our punch and then attempt to wipe them down before welding.  Needless to say the surface remains somewhat oily.  I am looking for suggestions on a different fluid that will not effect the welds or any quick technique we could use to clean the weld areas.  Thank you in advance for your time.

DiBlazing

RE: Aluminum Weld Contamination Due to Punching Fluid

For your situation, I would probably purchase a cleaning solvent like that used for nondestructive testing (NDT).  We purchase Liquid Penetrant cleaner from the following web site - there are other web sites to purchase Liquid  Penetrant cleaner, as well. The cleaner is sprayed on the surface and easily wiped off with a rag, in preparation for Liquid penetrant inspection, but it could also be used for other applications. Removes most surface residue - great for preparing surfaces for inspection and pre-weld cleaning, and is safe to use as well.

www.magnacorporation.net/liquidpent.html

RE: Aluminum Weld Contamination Due to Punching Fluid

(OP)
metengr,
   Thank you very much for your time.  I do perform destructive testing here, however I do not do any nondestructive testing and was not familiar with the NDT solvents.  I looked up that website and it turns out that Magna Corp. is right in my backyard.  They are going to send me a sample to give it a try.  I truley appreciate it.

Best Regards,
  DiBlazing

RE: Aluminum Weld Contamination Due to Punching Fluid

Clean with alcohol and clean rags.  The wire brush with stainless steel wire brush.

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