| ESAB AB Patent applications |
| Patent application number | Title | Published |
|---|
| 20120097643 | DEVICE FOR HANDLING POWDER FOR A WELDING APPARATUS - A welding device for powder welding is described, which comprises a welding head for transportation of at least one welding electrode to a welding area, and a powder transportation device for transportation of powder from a container to the welding area. The powder transportation device comprises at least a first pipe which at a first end has an opening which is arranged to be placed in the container in order to transport fluxing agent from the container. The powder transportation device comprises at least a first ejector which is connected to the second end of the first pipe and which is arranged to transport powder from the container via the first pipe using pressurized gas. | 04-26-2012 |
| 20120043307 | ARC WELDING METHOD AND APPARATUS FOR ARC WELDING - An electric arc welding method is provided, wherein an electrode assembly comprises at least two fusible continuous electrodes acting on a workpiece for generating a weld pool via electric arcs, wherein the at least two electrodes are arranged in sequential order relative to a welding direction and laterally separated relative to each other, wherein steps are performed of monitoring at least one stability parameter (Stab_par) for each electrode of the electrode assembly; determining if one electrode of the electrode assembly violates a stability criterion (Crit); separating at least temporarily the one electrode violating the stability criterion (Crit) from one or more adjacent electrodes when a violation of the stability criterion (Crit) of the one electrode is detected. | 02-23-2012 |
| 20110297656 | WELDING CONTROL - A welding device applies weld material between two work pieces such that the work pieces are connected mechanically with one another. The welding device includes a welding head and a central element. The welding head performs a welding action during transport thereof along an operating direction between the work pieces. Two primary sensor members are arranged on the central element upstream of the welding head relative to the operating direction. The sensor members register geometric properties of a spacing between the work pieces in which spacing the weld material is to be applied. Each sensor member is configured to maintain contact with a respective wall of the two work pieces adjoining the spacing while allowing variation of lateral distances between the central element and the adjoining wall. This is accomplished by the sensor members being pivotally attached to the central element via at least one pivoting axis oriented essentially perpendicular to the operating direction. | 12-08-2011 |
| 20110290763 | Device and Method for Powder Handling for Welding Apparatus - A welding device ( | 12-01-2011 |
| 20110163151 | DEVICE FOR WELDING - A welding crane ( | 07-07-2011 |
| 20110114614 | COOLING DEVICE FOR WELDING DEVICE - A cooling device for liquid cooling of at least one member of a welding device and a welding device with such a cooling device is described. The cooling device comprises a coolant tank, an outlet pipe for coolant from the coolant tank to the member, which outlet pipe comprises an outlet for connection to the welding device, a return pipe for returning heated liquid from the member back to the coolant tank, which return pipe comprises an inlet for connection to the welding device, and a pump which is connected to the outlet pipe for pumping coolant from coolant tank to the member. The cooling device comprises means for preventing flow through at least one of the outlet pipe and the return pipe when the pump is shut off. | 05-19-2011 |
| 20110089144 | DEVICE FOR HANDLING POWDER FOR A WELDING APPARATUS - A welding device for powder welding is described, which comprises a welding head for transportation of at least one welding electrode to a welding area, and a powder transportation device for transportation of powder from a container to the welding area. The powder transportation device comprises at least a first pipe which at a first end has an opening which is arranged to be placed in the container in order to transport fluxing agent from the container. The powder transportation device comprises at least a first ejector which is connected to the second end of the first pipe and which is arranged to transport powder from the container via the first pipe using pressurized gas. | 04-21-2011 |
| 20110056923 | Welding Power Supply - A welding power supply ( | 03-10-2011 |
| 20110036898 | WELDING CRANE WITH WELDING HEAD - A suggested welding crane ( | 02-17-2011 |
| 20090302014 | CONTROL METHOD FOR MIG/MAG-WELDING AND WELDING EQUIPMENT APPLYING THIS METHOD - The present invention refers to a control method and welding equipment for MIG/MAG-welding with presence of short-circuiting droplets between an electrode end and a workpiece. The method comprises establishment of a short-circuiting time, establishment of an arc time, and controlling the energy supplied to the electrode. The energy supply is controlled in such a way that the energy supply is increased if a measured short-circuiting time of a total period time, where the period time is the sum of the short-circuiting time and the arc time, exceeds a defined adjustable set value and decreases if said short-circuiting percentage goes below said set value. | 12-10-2009 |
