Forming defect in dish ends
Forming defect in dish ends
(OP)
Dear All!
We got dish end formed of A-516 Gr 70 thickness 12mm and ID = 1735mm. On performing DPT at the outer side of knuckle radius some linear defects on one portion were visible seemed like cracks. What it could be? Some plastic deformation? Any forming Defects? Will it be repaired by weld over lay?
Looking forward for your help and guidance.
We got dish end formed of A-516 Gr 70 thickness 12mm and ID = 1735mm. On performing DPT at the outer side of knuckle radius some linear defects on one portion were visible seemed like cracks. What it could be? Some plastic deformation? Any forming Defects? Will it be repaired by weld over lay?
Looking forward for your help and guidance.





RE: Forming defect in dish ends
RE: Forming defect in dish ends
RE: Forming defect in dish ends
RE: Forming defect in dish ends
RE: Forming defect in dish ends
Your numbers suggest that you're working to a high-stress code (ASME VIII Div 2, or similar). Thus, I would be very cautious about weld repair on the knuckle (high stress area). Was the dished end cold or hot-formed?
RE: Forming defect in dish ends
RE: Forming defect in dish ends
RE: Forming defect in dish ends
RE: Forming defect in dish ends