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Why do weld spots become unstable – even though all parameters are correct?

In many cases, the cause lies not in the equipment, but in the electrode.

"Precise tip dressing and regular tip changes are crucial for stable welds," says Mathaeus Swientek, Technical Manager at KYOKUTOH Europe.

He answers important questions from practical experience:

Why is tip dressing necessary?
During spot welding, the electrode shape changes. Poor current flow, uneven electrode wear, and significantly reduced weld quality are the consequences. Tip dressing restores the original electrode geometry.

What are the effects of an undressed electrode?
It leads to unstable weld spots, increased heat generation, and a shortened service life of the welding tips.

What advantages do automatic tip changers offer compared to manual changes?
Automatic tip changers reduce downtime, ensure consistent change quality, and relieve the operator. Tip changes are reproducible.

When should tip dressing or changing be performed?
When the tip shape deviates from the target dimensions, the weld quality deteriorates, or a specified number of welds has been reached.


  Regular tip dressing and automated tip changing are crucial for stable processes, high weld quality, and maximum system availability – and thus make a significant contribution to efficiency in automated manufacturing.