The Lobe Curve is the only way to verify that the Machine, Transformer, Parts, and all the Settings (including Force and Electrode Size) are set and working correctly together. It is a complex process. If you are ISO 9000 you should have at least a partial Lobe Curve in the QC file for each weld joint. A Lobe curve is simply weld time on the x-axis and amperage (or %heat) on the y-axis.
Special InformationBelow are two images that are files for lobe curves and explain what problems can be determined and lets you get an idea of why they are important. There are over 100 lobe curves available. Explain01 is a .xls format and Explain02 is .mht. If you are not sure use Explain02!!
Explain01 -- -- If you "open" this answer "no" when asked.
Explain02Please call us! This page is not complete yet.