Prufi
PRU-106Heuristic screen

Spot-welded lap joint

Scope and limits

Spot-weld thickness ratio <= 3:1 and contact width for the electrode on a detected lap joint.

Standards and references

No standards reference is assigned to this check. The scope described above applies.

STEP examples for this check

Geometry preview: Spot-weld lap flange too narrow

Sheet metal · CC0-1.0

Spot-weld lap flange too narrow

Model example

Two 2 mm plates overlap by only 6 mm. A spot-weld electrode tip needs a contact width of more than 8 mm.

Dimensions (approx.): 114 × 30 × 4 mm

Expected check result

PRU-106 should warn (worded: if spot welded) that the 6 mm overlap is below 8 mm and nothing else.

Finding expected

PRU-106

Compare: Spot-weld lap flange wide enough