railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
Slag inclusions are frequently trapped in fusion welds due to:
1
bead contour and the difficulty of melting the slag in subsequent runs.
2
the stresses set up in the weld.
3
the weld metal cracking.
4
gas solubility in liquid and solid weld metals.