Heat exchanger material representation
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This post was last edited by wrightbob on 2017-8-27 13:02. The material of the modified high-pressure heat exchanger is 12Cr2Mo1R (H) IV + surfacing. What does H mean and what does IV mean. The thickness of the tube side is 168.5+6.5mm, and the cladding layer is 6.5mm. Is it cladding inside the tube side or outside the tube side? There is also a 6.5mm cladding layer on the shell side. The shell side is internal cladding.
The tube side is the reaction product, and the shell side is the hot mixed hydrogen feed oil.
Surfacing welding is generally not all inner wall surfacing welding
This post was last edited by wrightbob at 2017-8-26 14:19. The heat exchanger information should be clearly seen. What does H mean and what does IV mean. The pipe side cladding layer is 6.5mm. Is it inside the pipe side or outside the pipe side?
It’s very clear from this photo. Hydrogen-resistant steel, IV, is a level four forging.
Thank you. Is overlay welding to prevent corrosion? Why does it need to be overlayed when the raw oil is taken from the shell side? Or should the tube side be internally cladded or externally cladded, or both?
The tube side and shell side must be surfacing welded. Are you choosing a tube-wound heat exchanger or a threaded locking ring?