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Purge Gas For SMAW

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nabeel3

Mechanical
Joined
Dec 14, 2006
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146
Location
SA
Dear All

I am trying to develop a WPS for Super duplex UNS32750 Tube material, Sch 40, One and a Half inch size. Using Electrode E2594-16 is it required to use purge gas? . Process SMAW. Data sheet attached
 
 https://files.engineering.com/getfile.aspx?folder=1a441a29-f91c-4df5-a261-c997ed2a27a8&file=Boehler_2507-P100_rutile-E2594-16-Covered_electrode_07072020074706.pdf
Pure Ar for pure and backing gases.
You could use Ar+2%N2 for weld gas if you wanted to.

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P.E. Metallurgy, consulting work welcomed
 
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