What is an upslope？

Upslope is used when welding current is gradually raised during spot welding to improve the fit when there is a plate gap or to make it difficult to get scattered.
In projection welding, the weld strength tends to decrease when upslopes are inserted, so it is better not to insert upslopes.If the strength is sufficient but scattering is a problem, an upslope may be added.
It is important to set it to satisfy the required quality.