Class / Patent application number | Description | Number of patent applications / Date published |
219130320 | Responsive to arc current only | 8 |
20090242533 | WELDING CONTROL APPARATUS AND METHOD - The present invention provides a welding control apparatus including: a droplet separation detecting unit that detects separation of a droplet from a tip end of welding wire; and a waveform generator that alternately generates a first pulse for separating the droplet and a second pulse for shaping the droplet and outputs the generated pulse to a welding power source, the waveform generator generating a third pulse having a pulse shape different in a pulse peak current and/or a pulse width from the second pulse to output the generated third pulse to the welding pulse source after a base time of the first pulse if separation of the droplet is not detected within a peak period, a falling slope period, or a base period of the first pulse to thereby restore a droplet supply regularity. | 10-01-2009 |
20100193488 | Method for regulating a welding current source and welding current source for carrying out the method - The invention relates to a method for regulating a welding current source with a current transformer, which has a series resonant circuit on the primary side and a parallel resonant circuit on the secondary side, the series resonant circuit being supplied with a variable alternating voltage by a bridge circuit and the parallel resonant circuit providing energy to a welding process by way of a rectifier, and a control unit controlling the bridge circuit in dependence on at least one state variable of the welding current source. In order to develop the method in such a way as to make regulation possible at low cost and with as little power loss as possible, it is proposed according to the invention that only the primary current or a state variable on the primary side corresponding to the primary current is recorded as the electrical-current state variable of the welding current source and a control signal dependent on the primary current or on the state variable corresponding thereto is fed to the control unit. A welding current source for carrying out the method is also proposed. | 08-05-2010 |
20110056923 | Welding Power Supply - A welding power supply ( | 03-10-2011 |
20110198331 | TIP-BASE METAL DISTANCE CONTROL METHOD FOR ARC WELDING SYSTEM, AND ARC WELDING SYSTEM - A tip-base metal distance control method includes an actual-welding-current acquisition step of measuring actual welding currents by current measuring means under a predetermined actual welding condition and calculating an average actual welding current under the actual welding condition by average-value calculation means, a reference-current acquisition step of extracting, from a reference-current storage table, an average actual welding current corresponding to the actual welding condition and setting the average actual welding current as a reference current by reference-current acquisition means, a current comparison step of comparing the average actual welding current under the actual welding condition with the reference current by current comparison means, and a welding-torch-position correction step of correcting the position of a welding torch in an upward or downward direction by welding-torch-position correction means on the basis of a comparison result in the current comparison step. | 08-18-2011 |
20110278273 | AC PULSE ARC WELDING METHOD - An AC pulse arc welding method of the present invention sets an appropriate AC frequency based on a wire feed rate and a polarity ratio when the polarity ratio is changed without changing the wire feed rate to control a heat input to a base material, and sets an appropriate straight polarity current value necessary for one drop per pulse from the polarity ratio and the AC frequency in AC pulse welding. The method makes it possible to achieve appropriate AC pulse welding by setting the polarity ratio, and to easily set the welding conditions. | 11-17-2011 |
20150028009 | METHOD FOR CONTROLLING NECK DETECTION FOR WELDING POWER SUPPLY - A method is provided for controlling a neck detection for a welding power supply. The neck detection can be suitably performed even if the welding power supply is combined with another power supply for performing a simultaneous arc welding operation at a plurality of locations of a workpiece. | 01-29-2015 |
20160167152 | SYSTEMS AND METHODS FOR DETECTING NON-OPERATING THYRISTORS IN WELDING SYSTEMS | 06-16-2016 |
20160175963 | SYSTEMS AND METHODS FOR SOLID STATE SENSOR MEASUREMENTS OF WELDING CABLES | 06-23-2016 |