NB/T47014-2011 6.1.5.5 in the Welding Procedure Qualification for Pressure Equipment
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In NB/T47014-2011 for the qualification of welding processes for pressure equipment, on page P38 under \"6.1.5.5 When a welding process that has been deemed qualified for weld specimens is used for fillet welds, there is no limit on the effective range of welding thickness\"； When a welding process that has been found to be suitable for evaluating fillet weld specimens is used for fillet welds in non-compressed weldments, there is no limit on the effective range of weldment thickness. ” How should this sentence be understood? Is there no limit on the effective thickness of the workpiece when welding fillet joints? With a qualified process qualification, can fillet welds be covered arbitrarily as long as the material, welding method, and welding materials remain unchanged? Seeking advice from experts, thanks!
That’s roughly what it means, but in reality this description isn’t reliable enough; for welds with excessive thickness, heat treatment needs to be considered. If a process evaluation is conducted without heat treatment, then it’s not appropriate.