Issues with pipe fitting heat treatment?
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I have a gentle question: as shown in the diagram, this fitting has four pipe seats, with a ring seam between them. Both the pipe seats and the ring seam need to undergo heat treatment. According to standard calculations, the holding time required for heat treatment varies. So, how should this fitting be heat-treated – should the pipe seats and the ring seam be treated together or separately? If they are to be treated together, what should be the holding time? Thank you
Overall heat treatment: the heat treatment time is determined based on the thickness of the joint, 4
Isn’t this a flow meter? I can’t see any seam in the middle; what’s visible is that the nozzle in the middle is fixed there with pins
Yes, the picture isn’t very clear, that’s why I said it that way
Overall heat treatment: the heat treatment time is determined based on the thickness of the joint
For overall heat treatment, generally, the holding time is determined based on the duration. However, attention should be paid to the weld evaluation reports for welds with a short holding time; the standard requires that the holding time for the weld evaluation specimens be no less than 80% of the holding time for the workpiece.
For overall heat treatment, the duration is determined based on the length of the holding time; pay attention to the heat treatment time specified in the weld evaluation
Take a look at the heat treatment of pressure vessels – there are many components with different weld thicknesses; determine the required insulation time based on the longest needed time