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Nugget Profiler

Background


The conventional quality control of spot welding,
  - Guarantee of quality => Breaking test
  - Quality identification => Driver check (DC)

The inspection method replaced with this Driver check (DC) is proposed.

Practical application of non-destructive inspection using magnetism.
A nugget can be quantified
.

Merit of Nugget Profiler

・ Performs inspection giving no external damage to the subjects.
・ It has the function of quality traceability.
・ It can inspect even high-tensile steel.


The problem of a driver check

・ usually steel (270MPa,440MPa); A bend arises around a nugget and metal fatigue occurs.
・ high-tensile steel(780MPa or more); It cracks on a nugget or the outskirts of it.
  For the reason, welding intensity falls.