A method for determining an evaluation time interval (ii) as well as a process for the quality of a spot weld on the basis of a variation in temperature in the evaluation time interval

摘要

the invention concerns a method of determining a bewertungszeitintervalls (10) for a quality assessment of a punktschweiu00dfverbindung on the basis of a temperature in the punktschweiu00dfverbindung,although a majority of referenzpunktschweiu00dfverbindungen, each with different quality of the current course of temperature clearly allocated size is determined and the gradients are compared.from the comparison of the gradients is a bewertungszeitintervall (10) determines a time interval, in which the signals are clearly different from each other and a sequence, the sequence of the qualities of the referenzpunktschweiu00dfverbindungen corresponds.a classification of a quality of any punktschweiu00dfverbindung is about values of the temperature assigned size within the bewertungszeitintervalls (10) simple and feasible.