Is heat treatment required for open-fire work in high-pressure hydrogen-containing areas?
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This post was last edited by Final Fantasy on 2010-5-20 09:13. Our Gao Huan model now has a water injection port, made of 0Cr18Ni10Ti material.
Yes, I requested heat treatment every time I went there
It is necessary; without stress relief, it is very prone to breaking
Before performing welding on old hydrogen-handling pipelines, it is necessary to remove the hydrogen from them by heating, in order to drive out the dissolved hydrogen. However, this is not called heat treatment; it is a different concept from heat treatment!
Hydrogen removal treatment must be carried out before welding, and heat treatment must be performed after welding
In areas exposed to high-pressure hydrogen, the pressure is high and hydrogen is present; the materials used are also special. Heat treatment must be carried out after welding to eliminate stresses, otherwise cracks may occur during operation, which would cause problems.
It is made of stainless steel; note that it needs to be alkali-washed first to prevent corrosion by polyoxymethylene sulfate
What does 8# cbq210048 – protection against corrosion by polyoxysulfone – mean?