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Steel Spot And Plug Weld Nugget Size: Audi - UPDATE
I-CAR · April 20, 2021 · Audi
Summary
This article outlines Audi's requirements for steel spot and plug welding, emphasizing that repair welds must recreate the original factory connections. It highlights the need to calculate spot weld nugget diameters based on panel thickness, use inverter-technology spot welders on ultra-high-strength hot-formed steel, and perform a 100% chisel test on test panels.
What to do on the job
Perform a 100% chisel test on test panels before repairing the vehicle, and use the specified formula to calculate and verify the correct spot weld nugget diameter based on panel thickness.
How to use it
Use this document to justify the time and necessity of performing destructive weld testing (chisel tests) and setting up test panels prior to welding on Audi vehicles. It can also be used to support the requirement for specialized inverter-technology spot welders when working with ultra-high-strength hot-formed steel.
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