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#11
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Jiggery-Tackery
Morgans wrote:
"bildan" wrote There's probably a smidgen of truth in that - I heard it from an old timer OA welder 45 years ago. Then again, he might just have been grumbling about 1960's "new technology". Since then there's a lot of field experience with highly stressed TIG welded 4130 and if there's any loss in weld strength, it doesn't seem to be a problem people worry about. However, if it was a real "bet my ass" part, I might have it heat treated and magnafluxed. I thought that I remember that a small aircraft (Bearcat?) manufactured by "Budd" (I want to say Davidson, somehow formerly involved in this group?) in Mexico was using TIG as their primary welding method, and having no problems. Anyone remember anything like that, or know more of it? The Ag metal shop in the high school I teach at got a very nice TIG welder this past year, so now I need to learn how to use it, if for no other reason just to learn something new. Perhaps this summer will give me an opportunity to play with it. It has always fascinated me, after seeing it used so much on car and motorcycle "how to do it" TV shows. It certainly does produce very neat welds, and on many different metals and widely varied situations. Jim in NC When acurrizing a bolt action rifle I frequently had the magazine well welded to the receiver. I noticed when it was OA welded I had problems with things taking a bluing. With TIG I didn't have this problem. I don't weld, never got past the welding coupons stage and thus have had to have it done for me. As I understand it TIG doesn't heat the receiver as deeply as OA. I would think a similar situation would occur in aircraft welding where one welds a lighter part to a heavier part. Would a similar situation occur when welding tubing of different diameters? Dan, U.S. Air Force, retired |
#12
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Jiggery-Tackery
You know, there is a heck of a lot of difference between welding .028 or
..035 wall verses .065 or heavier... |
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