2006-12-01 11:50:04 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
hydrogen embrittlement
undercut
cracks in root pass
inclusions of slag
residual heat stress
impurities in weld from atmosphere , grease, rust, water
2006-12-01 11:55:07 · answer #1 · answered by MrWiz 4 · 0⤊ 0⤋
Poor welding technique. If a weld (rather than a braze) is conducted without sufficient heat depth into both surfaces, then it will not have much strength. Was this a gas weld? An arc weld? What?
2006-12-01 19:53:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Mr. Wiz covered a good number of problems, but let's not forget the original main problem, which led to the use of flux and submersive welding: atmospheric contaimination.
2006-12-01 20:08:47 · answer #3 · answered by Scythian1950 7 · 0⤊ 0⤋
incompatible base metal and filler metal,incorrect gas mixture,slag iclusions inside the weld,to much heat causing base metal to crystalize,not enough heat,some types of contaminants on the surface before welding (ex:rust,grease,oil etc...).bad base metal composition,bad filler metal in general,and other reason pertaining to Metallurgy.
2006-12-01 22:06:02 · answer #4 · answered by Tracker 2 · 0⤊ 0⤋