Treatment of thermal treatment deformation in towers
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Dear sea friends, the diameter is 4400, with 22 layers of thickness; after heat treatment, the roundness deviation is 30-40 mm. The requirement for the installation of the internal components is 6-10 mm. How can this be corrected? Are there any simple methods?
Why is heat treatment required? Process requirements? Requirements for the material itself?
It’s a big problem; when it comes to correcting the roundness of thin-plate equipment, it might be useful to install the tray directly after correcting the tower ring
How to round it? ? The trick, then. .
Is heat treatment carried out in single sections? What is the length? What material?
345R, multi-section cylinder – all external connections to the internal welded components have been welded.
This is definitely deformation caused by insufficient support during the heat treatment process; it’s a tricky situation – the only options are to remove the internal components and then straighten it out, or replace the cylinder section.
Bro, this is really going to kill people. . . It is said that this is how heat treatment for tower structures is done. .
If it’s that troublesome in this case, then who would dare to carry out heat treatment? It’s definitely due to improper support, which results in higher stress in certain areas; moreover, the heat treatment temperature reduces the strength of the equipment, and that’s when deformation occurs.
Before heat treatment, measures should be taken to prevent deformation inside the cylinder, such as using reinforcement rings or cross-shaped supports, in order to reduce and control the roundness errors caused by heat treatment.
I guess it’s because the temperature is a bit high, and secondly, the stiffness is insufficient