Can liquid nitrogen tanks be welded using 304 stainless steel or aluminum alloy?
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At atmospheric pressure, the temperature of liquid nitrogen is –196°C; so does this mean that welds are prone to cracking at such low temperatures? This leads to a leak of liquid nitrogen. Can the low-temperature vacuum jacket device in chemical engineering machinery be welded?
Welding materials, welding processes, and low-temperature Charpy impact tests for low-temperature equipment and pipelines are now fairly mature, so there is generally no need to worry about low-temperature brittleness issues~~
No. Special welding materials with low capacity must be used
When selecting welding materials, they are generally made of the same material as the object to be welded or a material that is superior to it; therefore, the quality of the welds is guaranteed to be excellent. The temperature that the cylinder can withstand is the same temperature that the welds can also withstand.
The inner tank material of the liquid nitrogen cryogenic storage tank is 304, while the outer tank material is Q235~~
Okay, thank you, moderator! I’ll ask you again if I have any questions later