Welding Lobe Diagram. A welding lobe is a graph indicating the evaluation of the resistance spot weldability that shows an appropriate welding range by changing two factors while fixing one factor of resistance spot welding process parameters such as electrode force weld time and weld current. Usually two parameters out of total four parameters are varied in an attempt as to establish proper.
Usually two parameters out of total four parameters are varied in an attempt as to establish proper. But what are spot weld lobes. The components required to be welded to the hsla steel sill varied in metal thickness from 0.
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A b table 2 welding conditions items conditions welding machine air pressure control type mfdc 130 kva cooling temperature 20c cooling rate 6 lmin electrode fore kn 20 30 50 hold time ms 300 welding time ms 150 200 250 300 350 yu 201294 march 2014layout 1 21314 843. The thesis can be divided into two parts pre weld studies and an understanding of. The weld lobe in spot welding provides an indication of good quality joining and the tolerance of the weld schedule in production stage. Welding lobe diagram is illustrated in figure 3.