LIQUID NITROGEN ... as used in WELDING?

Question:
Liquid Nitrogen is sometimes used in welding jobs .

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Answers:

If a car has 130,000 highway miles on it, is that bad?

Well its just Nitrogen..not liquid, It is used to purge certain things while welding...Like gas tanks because it is an inert gas. I have also heard of some using it as a backing gas for stainless but have alway used argon for this. Argon is the most common sheilding gas for welding

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i own a shop and its used on MiG welders to shield the weld, it makes it have a good clean weld with no impurities in the weld,and is stronger than other welds if done right,good luck hope this helps.

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Harry did you know?

It's nitrogen gas, though, not liquid nitrogen, right?

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