Single vs Double V-Weld
Single vs Double V-Weld
(OP)
We have a fabricator welding a short girder. While the designer had indicated a single V-weld, the fabricator wants to do double V. Pros and Cons?? Help would be appreciated.
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RE: Single vs Double V-Weld
RE: Single vs Double V-Weld
Perhaps the fabricator thinks they can achieve the weld with say two passes (one on either side of the V), as opposed to maybe 3-5 if its one large mass from one side?
prep work should be close to the same for either method.
I try use single V myself unless the pl thickness goes past say about +10mm, then I try to stick with double V if possible.
anyone else with comments?
DRW
RE: Single vs Double V-Weld
Both joints can be 100% penetration connections and are interchangeable.
RE: Single vs Double V-Weld
RE: Single vs Double V-Weld
My dime is to remind you of the changes of the metal structure in the Heat Affected Zone. What thickness of plate are you trying to weld? You say that it is thicker than 10mm, anything beyond one inch (sorry I'm an imperial system user), may require preheating (something else to add to your costs) in order to minimise residual stresses due to welding.
I agree with the statement that the shop is trying to give you their most economical, yet efficient design.
RE: Single vs Double V-Weld
Since that serendipity, I have never allowed a single-V without backing strips wheresoever.
Ciao.
RE: Single vs Double V-Weld
RE: Single vs Double V-Weld
Ciao.
RE: Single vs Double V-Weld