Patent ID: 8278583
Filing Date: 2012-10-02
Classification: B23K

Abstract:
1. A method for evaluating the applied welding current intensity during the electric resistance seam welding of overlap seams of consecutive container bodies of a production series, characterized in that a first series of consecutive container bodies are welded by controlling the resistance welding machine during the production with a preset, substantially constant welding current intensity a in that after this series of container bodies at least a single container body of the production series is welded by a falling or a rising welding current intensity during the seam welding and in that during this welding with a falling or rising welding current the electric energy is determined several times and/or the temperature of the weld seam is determined several times, and in that for this welding with falling or raising welding current the welding current intensity is determined at which the welding of the weld seam of the individual container body is too cold and the welding current intensity at which the welding of the weld seam is too hot, based on the determined electric energy values and/or on the determined temperature values, and in that, based on this determination, a preferred welding current range or a preferred welding current value within these limits is determined.