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When welding (1/8") E7018 welding rods, what's the maximum width for stringers and for weaving? I've heard different answers but can't find anything in the D1.1 Structural Code.
Thanks and have a good day!
Ivan A.
Ivan,
For the process you mentioned, SMAW (E7018), you will not find many restrictions on weave/oscillation width. Table 3.6 in Clause 3 - "Prequalification of WPS's" limits the maximum size of single pass fillet welds to somewhere between 5/16" and 1/2" depending on the position. That would be a limitation on weave width. Table 4.6 in Clause 4 - "Qualification" would also limit weave/oscillation width in Charpy V-Notch Testing (CVN) applications by limiting heat input and weld metal volume (see: Electrical Characteristics 9). Travel Speed plays a key role in both those calculations and weave width has a direct impact on travel speed (the wider the weave, the slower the weld progression, or travel).
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Over the years as the "Weld Engineer" on specific projects I've come up with weave width limitations that I have found to work in my applications. They were not limitations listed on a Weld Procedure Specification (WPS) because of a code requirement, they were listed on the WPS because of the "Engineers" requirement (mine).
I'm sure you came looking for a "hard" number you could use to determine weave or oscillation width. But that is a number that you would need to calculate given your specific requirements.
PWC