Can anybody advise on welding parameter or WPS for welding zero gap joint with SAW process for CS material.
Material Thickness - 40 mm min & 100mm Max
Application - long seam weld & circ seam welds (6500mm dia)
I tried with 60 deg included angle 2/3rd & 1/3rd configuration, 5mm root face with following parameters on 50.0mm thickness plate but it shows lack of fusion in root.
SAW 3.2mm EH12K wire & 10.62 flux (ESAB)
1st side 1st pass 600AMPS 30V & 45cm/min speed
1st side rest passes with 600AMPS 30V & 70CM/min speed
2nd Side 1st pass 750 AMPS 30V & 45 cm/min speed
2nd side rest passes with 600 AMPS 30V & 70CM/min
Edge preparations is done by gas cutting but root face is maintain perfectly with no misalignment.
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