#14
|
|||
|
|||
Quote:
I cannot think of a time when using the same/nearly-same filler as material being welded would lead to a cracking/failure problem, so am thinking dilution is not the problem, in these cases ...? - no matter the welding method. For decades welders used parent metal strips to weld with (much before tig' arrival - Dec. 1942). Distinct fillers came about during the 1930's, along with the growth in numbers of alloys of aluminum, 4130, stainless, magnesium...etc. Incomplete fusion can be a problem, with any welding method, and tig is not above it all and seems also to have its share of cold-shut joints and insufficient filler deposition. (Note: NHRA requires drilled holes in welds to demonstrate depth of penetration on tig-welded roll bars/cages on those race cars.) Personally, I think careful scrutiny of failed welds is a priority in establishing any/all aspects contributing to failures, even adding third and fourth sets of eyes/minds .... (Caveat: Any number of competing opinions can and do arise as pertaining to welding questions/difficulties/methods/techniques/styles/preferences... etc etc, and so one clear choice/path/method/procedure may of its own volition, spontaneously diss i p a t e.)
__________________
Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
Thread Tools | Search this Thread |
Display Modes | |
|
|