Monday, November 23, 2009

[MW:3712] Carpenter steel Alloy20 welding

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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