weld 8mm thickness 8mm fillet
A weld developed by the author for a client. Good by a big margin.
This
fillet weld
on 8mm thickness plain steel ("carbon-steel") is
- single-run
- MIG / GMAW weld
- 8mm leg-length (size of fillet where fillet meets plate)
- in the horizontal-vertical ("PB" position)
- straight run (no weave)
The welding condition is "robust". On a bad day you get a good weld.
On a normal day, you get an ideal weld, but it's the worst weld you
can realistically get which matters...
The tests on the weld demonstrate this - see pictures. The abundant
fusion of about 2mm weld penetration at the fillet-corner and good
fusion along the fillet-legs would not be easily disrupted.
It's also very productive, at 250mm/minute for this 8mm leg-length
fillet.
The weld - good size, profile and weld-pool fluidity during welding
(see "wetted" edges of weld)
"Macro" - the weld cross-section fine-ground and etched - showing excellent fillet-corner ("root") fusion
Nick-break test - plenty of fillet-corner ("root") fusion and sound
weld. The continuous "step" between the broken edge and the adjacent
top of the plate shows the weld penetration, agreeing with the "macro"
and demonstrating that deep fillet-corner fusion is consistent along a
length of weld
(R. Smith, 04Dec2014, 15May2017)