by john
(ilm nc USA)
When welding A CJP aluminum test plate IAW AWS D1.2, does the plate need to have the root pass/single pass, purged ?
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I dont have access to the latest copy of D1.2 so this answer is based on other welding codes...
A purge is recommended but not always required on aluminum test plates.
like carbon steel, a purge will make a difference but it can be welded without.
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