Page 219 - Welding of Aluminium and its Alloys

butt or fillet weld incorrect torch manipulation Poor welder technique, travel speed too Insufficient weld metal fill giving fast, current too low, incorrect torch groove on weld face resulting in positioning insufficient throat Current too high, root gap too wide, root Root pass ‘sucked back’ to give a face

Excess weld metal (excess cap height) Incomplete fill (face concavity or missed edge). Insufficient throat in fillet welds Root concavity Burn-through Overlap (roll-over) Porosity Worm-hole (piping) Crater pipe Solidification cracking

503 (fillet) (Fig. 11.5) 511 (Fig. 11.6) 515 (Fig. 11.7) 510 506 (Fig. 11.8) 201 2016 2024 100