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964 T #304 964 T #304 is offline
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Join Date: Apr 2007
Posts: 394
Originally Posted by 911nut View Post
Boxxer, all metals are composed of crystalline arrays.
During fusion welding all metals require some sort of shielding from the atmosphere to eliminate the possibility of hydrogen or oxygen embrittlement (depending on the alloy it will be more susceptible to one or the other).
Even if the weld is not a full penetration weld, without shielding there is still the risk of embrittlement.
Not if you are welding carbon steel, you do not need a purge
Old 12-18-2007, 06:27 PM
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