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Steel Spot And Plug Weld Nugget Size: Mazda - UPDATE
I-CAR · October 6, 2020 · Mazda
Summary
This article outlines Mazda's specific guidelines for spot and plug welding, noting that while Mazda does not specify a exact nugget size, they require trial welds for spot welding and provide a panel thickness-to-hole diameter chart for plug welding. It also highlights that spot welding can be substituted for plug welding if the general guidelines in the Body Repair Manual are followed.
What to do on the job
Perform a trial weld on matching scrap material to check weld strength before spot welding, and refer to the Mazda Body Repair Manual chart to match panel thickness with the correct plug weld hole diameter.
How to use it
Use this document to justify the time required for trial/destructive weld testing and to support the correct hole-diameter preparation for plug welds based on panel thickness. It can also be used to defend substituting spot welding for plug welding where access allows, per Mazda's official guidelines.
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