Dear Gentlemen,
Is preheat of work piece required for Alloy20 overlay on P1 (100 thk Girth flange)
using ER-320LR and for welding of Alloy 20 plates.
I am Experiencing Lot of defects in welding of Alloy 20 plates SB 463 / 16 thk .
Defects are linear but are not actually slag.
What could they be???
Consumable used is E-320 and ER-320LR.
Will appreciate immediate response.
Regards,
Shashi kumar
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