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- Jul 2, 2014
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I think part of it is the chrome-moly 4130 tubing and other shapes that are usually seen on aircraft weldments. In older days, and even now, much aircraft welding is done with oxy/acetylene gas welding to a high standard. The joint is preheated, then welded, and then post heated for stress relief and maintaining the proper grain structure. It is probably a good idea to do it with TIG welds as well. The structure is highly stressed, there is lots of vibration, and processes that can leave heat affected areas that can crack from poor grain structure need to be avoided.
https://www.millerwelds.com/resourc...eneral-motorsports-and-aerospace-applications
https://www.millerwelds.com/resourc...eneral-motorsports-and-aerospace-applications