metalman8357
Materials
- Oct 5, 2012
- 155
Welding plain carbon steel with the FCAW process. The component is a 12' diameter x 2" wide ring fillet welded on both sides to the face of a large plate. We use dry powder to MT the welds before stress relief and then we use wet MT fluorescence after stress relief. We stress relief at 1130F for 8 hours. We are noticing that after stress relief about 80 MT linear indications are popping up at the toes of the weld all the way around the ring. Stress relief should help to relax residual stresses, not create indications.
Any ideas?
Any ideas?