Issues regarding the simulated heat treatment and dehydrogenation treatment of containers
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I have a question recently; my company is about to undergo a design renewal process. But when it comes to simulated heat treatment and dehydrogenation heat treatment, my mind is completely blank. Upon checking GB150, no relevant provisions were found to serve as a basis for design. I’m asking the experts here: in what situations are simulated heat treatment and degassing treatment necessary? What are the specific parameters and cycle times involved? Which standards address these? ? ?
Simulation of post-weld heat treatment per HG/T20584-2011, clause 8.0.5 for P535
The above two heat treatment methods are generally applied to chromium-molybdenum steel; for degassing treatment, refer to the \"Training Manual for Pressure Vessel Design Engineers\"
The so-called simulated heat treatment is generally applied to test pieces, while post-weld dehydrogenation treatment is applied to the actual welds
It seems that simulated heat treatment is further divided into maximum simulated heat treatment and minimum simulated heat treatment; this was mentioned in the technical agreement when working on equipment for the Petrochemical Institute in the past.
For hydrogen removal, consider the properties of the material; check NB47015. For simulated heat treatment, refer to the manufacturing sections in HG20580–20585