A pressure welding method and a pressure welding device (1) are provided. The pressure welding device (1) includes a plastification device (7), an upsetting device (8) and component mountings (34,35,36,37) for the components (2,3,3,4) to be welded together and a machine frame (12). The pressure welding device (1) further includes a plurality of machine heads (13,14), each having a component mount (34,35), which machine heads are movably arranged on the machine frame and are connected to respective upsetting drives (22). The machine heads (13,14) and respective upsetting drives (22) can be independently driven. An upsetting head or support head (27), which is preferably secured on the frame, is arranged between the machine heads (13,14).

A system and method to make a welder aware of contact tip-to-work distance (CTWD) during a welding process. One or both of welding output current and wire feed speed is sampled in real time during the welding process. The actual CTWD is determined in real time based on at least one or both of the sampled welding output current and wire feed speed. The actual CTWD may be compared to a target CTWD in real time, where the target CTWD represents an estimated or desired CTWD for the welding process. A deviation parameter may be generated based on the comparing. An indication of the deviation parameter or the actual CTWD may be provided to a welder performing the welding process as feedback, allowing the welder to adjust the actual CTWD to better match the target CTWD in real time during the welding process.

A method of preventing arc flaring events for a welding system is provided. The method includes determining, by a controller, a real-time welding output characteristic of the welding system. The method additionally includes comparing, by the controller, the real-time welding output characteristic to a threshold welding output characteristic. The method further includes controlling an operating characteristic of the welding system in response to a determination that the real-time welding output characteristic exceeds the threshold welding output characteristic.

An arc welding method of a consumable electrode type generating arc between a tip end of welding wire and a to-be-welded portion by feeding welding wire to the to-be-welded portion of a base material while supplying welding current having average current of 300 A or larger to the welding wire, to weld the base material, includes: feeding the welding wire at a speed of the tip end being inserted into a space surrounded by a concave melted portion formed in the base material by the arc generated between the tip end and the to-be-welded portion; periodically alternating between a small current period where the welding current has a small average value and droplet is transferred from the tip end to a bottom part of the melted portion and a large current period where the welding current has a large average value and droplet is transferred from the tip end to a side part of the melted portion; and controlling the welding current in the large current period so that droplet transfer from the tip end to the side part is performed a plurality of times in each large current period.

The invention described herein generally pertains to a system and method related to influencing a direction of an arc within a welding operation. Within a hot wire welding operation, an arc is generated between an electrode and a workpiece and a welding wire is energized while being supplied to a puddle formed by the electrode in order to deposit the liquefied welding wire onto the workpiece. A welder system and/or method is provided that controls a direction of the arc based on at least one of a polarity of the welding wire (via a power supply that energizes the welding wire), a location of the welding wire in proximity to the arc, a synchronization and/or de-synchronization of a polarity of the welding wire with the electrode, an activation and/or a de-activation of energizing of the welding wire, or a combination thereof.

A short circuit welding method with successive welding cycles with a respective arc phase and short circuit phase includes controlling at least the welding parameters welding current and feed speed of a melting electrode and feeding the electrode toward of a workpiece at a predetermined forward final speed at least during part of the arc phase and away from the workpiece at a predetermined rearward final speed at least during part of the short circuit phase. A device carries out this method. A change in the feed speed and a rearward final speed are predetermined and a welding current is controlled to complete the short circuit phase after reaching the rearward final speed and after 3 ms at the latest and repeat every 8 ms at the latest. The welding parameters are controlled such that the welding cycle duration8 ms, resulting in a welding frequency125 Hz.

A system and method to correct for height error during a robotic additive manufacturing process. One or both of an output current, output voltage, output power, output circuit impedance and a wire feed speed are sampled during an additive manufacturing process when creating a current layer. A plurality of instantaneous contact tip-to-work distances (CTWD's) are determined based on at least one or both of the output current, output voltage, output power, output circuit impedance and the wire feed speed. An average CTWD is determined based on the plurality of instantaneous CTWD's. A correction factor is generated, based on at least the average CTWD, which is used to compensate for any error in height of the current layer.

A system and method of welding is provided where a pulse welding power supply is coupled with a magnetic field power supply such that a magnetic field can be generated proximate to a welding arc during pulse welding. During pulse welding a magnetic field is used to direct the welding arc and a droplet being transferred in the arc.

An arc sensor adjustment device and adjustment method for carrying out highly-accurate copying control. A welding system includes a welding torch, a welding power source that supplies power to the welding torch, a robot and a robot controller that cause the welding torch to oscillate, and an arc sensor that obtains a welding current or a welding voltage generated during welding while oscillating the welding torch. The arc sensor obtains a welding current or a welding voltage generated during calibration, in which welding is carried out while oscillating the welding torch in an up-down direction, calculates, on the basis of the obtained welding current or welding voltage, a correction amount for the position of the welding torch during welding carried out while oscillating the welding torch in a left-right direction, and applies the calculated correction amount to copying control.

Apparatuses, systems, and/or methods relate to a welding system that provides a field former for use in welding applications. The welding system includes a welding torch that includes one or more coil windings through which flows current that forms a magnetic field. The magnetic field is concentric to the tool center point. An arc is formed between the electrode and a workpiece. The magnetic field forces the arc in a center of the welding torch or the one or more coiled windings.