Welding process for the Welding of Aluminum
First Claim
1. A welding process for welding aluminum, comprising:
- operating welding electrodes for a set welding time to weld aluminium elements;
during the set welding time, measuring a force between the welding electrodes on the aluminum elements to be welded with at least one force sensor and transmitting the measured force to a welding control;
until the set welding time elapses, calculating and storing with the welding control at periodic time intervals at least one of (i) at least one absolute value of the measured force and (ii) at least one increase in the measured force;
calculating with the welding control a control deviation between the at least one of the at least one absolute value and the at least one increase in the measured force in each case and at least one of a reference value and a reference curve;
determining (i) a duration of a welding time extension is to follow the set welding time based on a magnitude of the control deviation, and (ii) a magnitude of a constant current to be applied during the welding time extension based on the magnitude of the control deviation; and
after the elapse of the set welding time, subjecting the welding electrodes to the determined constant current for the determined duration of the welding time extension.
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Accused Products
Abstract
A welding process for the welding of aluminum includes a force sensor measuring a force between two welding electrodes on aluminum elements to be welded and transmitting its measured values to a welding control. Until the elapse of a set welding time, the welding control calculates and stores at least one absolute value and/or at least one increase in the measured force. The welding control compares the measured absolute value and/or the increase in the measured force with a reference value and/or a reference curve and calculates a control deviation from the comparison. After the elapse of the set welding time, the welding control subjects the welding electrodes to a constant current during a welding time extension that follows the set welding time, dependent on a magnitude of the control deviation that is measured at the point in time of the elapse and/or during the set welding time.
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Citations
11 Claims
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1. A welding process for welding aluminum, comprising:
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operating welding electrodes for a set welding time to weld aluminium elements; during the set welding time, measuring a force between the welding electrodes on the aluminum elements to be welded with at least one force sensor and transmitting the measured force to a welding control; until the set welding time elapses, calculating and storing with the welding control at periodic time intervals at least one of (i) at least one absolute value of the measured force and (ii) at least one increase in the measured force; calculating with the welding control a control deviation between the at least one of the at least one absolute value and the at least one increase in the measured force in each case and at least one of a reference value and a reference curve; determining (i) a duration of a welding time extension is to follow the set welding time based on a magnitude of the control deviation, and (ii) a magnitude of a constant current to be applied during the welding time extension based on the magnitude of the control deviation; and after the elapse of the set welding time, subjecting the welding electrodes to the determined constant current for the determined duration of the welding time extension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification