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Spot/Projection Weld Pitch

Spot/Projection Weld Pitch

Spot/Projection Weld Pitch

(OP)
Hi,

A bracket is projection welded (R3mm) to a part with a weld pitch of 18mm.  I would like to put a 3-sheet 12mm spot weld directly between the two projection welds (slightly offset from the centerline) to bond this assembly to another panel.  I realize that due to the small pitch between the spot weld and the projection welds, there will almost definitely be some current diversion.  Is there a way to predict the weld strength of the spot weld though?  We just need to hold the parts together.  It is not a critical weld, but I would like to put a spec on it.

Please see the attached diagrams for details.

Thanks in advance!

RE: Spot/Projection Weld Pitch

Hi tchak

I am not aware of any calculations to verify strengths of a spot welds, I think the way forward is to have the part made up with just the spot weld and test it to failure, in fact test a few and you will have some field data.

desertfox

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