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English Translations » 【静设备】 » Welding and post-weld heat treatment of 20MnMoⅳ

Welding and post-weld heat treatment of 20MnMoⅳ

2017-03-04View Original

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Welding procedure qualification for 20MnMoⅳ and heat treatment after welding – is heat treatment required for welding repairs on the flange sealing surfaces?
Reply #22017-03-09
No heat treatment is necessary; just preheat before welding and maintain the temperature after welding.
Reply #32017-03-10
Refer to NB/T47014 and NB/T47015. There are corresponding regulations in it. Whether heat treatment is required after welding on the flange sealing surface depends on the depth of the weld; it is recommended to consult GB150!

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Translated at 2026-07-21 03:08:30

Original: https://bbs.hcbbs.com/thread-1758846-1-1.html

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