A welding system and method is provided which moves a welding consumable during a welding operation, where the consumable is moved downstream of the welding contact tip during welding. A wire manipulation device is provided which causes the consumable to move after it has left the contact tip and before the consumable reaches the weld puddle of the welding operation. The consumable can be moved in different patterns during welding and the welding process parameters, such as wire feed speed, etc. can be changed based on the movement of the wire.

A contact tip assembly having an electric contact unit containing a contact tip with an electric energy source, where the electric contact unit is positioned at a distance away from the outlet opening of a guide.

A welding system and a method of control. The welding system may include a weld gun that may have an induction coil and a guide sleeve. The induction coil may heat a welding electrode in the weld gun. The guide sleeve may inhibit the welding electrode from engaging the induction coil.

The invention described herein generally pertains to systems and methods related to repeatable and accurate setting of welding torch lead and lag positions, particularly with orbital welding systems. Specifically, a torch is coupled with a lead-lag coupler having a stop lug. A stop set with a stop pin is rotated to a desired position of lead or lag and secured. The lead-lag coupler, and torch which rotates therewith, are then unsecured and rotated until the stop lug contacts the stop pin. In this position, the torch is maintained at the desired angle. The stop pin remains in place throughout operation(s) to permit quick, accurate return to the desired angle if the torch is temporarily moved out of position.

A contact tip assembly having an electric contact unit containing a contact tip with an electric energy source, where the electric contact unit is positioned at a distance away from the outlet opening of a guide.

An example wire liner retention apparatus includes: a body comprising a bore extending longitudinally through the body, the bore configured to permit passage of a welding wire liner through the bore; a clamp configured to apply a compressive force to the welding wire liner in a radial direction within the bore to limit movement of the welding wire liner with respect to the body; and a compression adjustment mechanism configured to adjust the compressive force applied by the clamp.

An electric arc torch includes a torch body and a gas diffuser extending from a distal side of the torch body. A contact tip is attached to the gas diffuser. The contact tip has a bore extending along a first axis. A wire guide is located within the torch body and has a wire guide channel that extends from a wire receiving end of the wire guide channel to a wire discharge end of the wire guide channel. The wire discharge end is aligned with the bore of the contact tip. A wire electrode conduit extends from a lateral side of the torch body and is configured to discharge a wire electrode into the wire receiving end of the wire guide channel and along a second axis. An angle between the first axis and the second axis is not greater than 90 degrees.

A welding torch includes an inner tube of a helically wound wire to define a passage for a welding wire, a conduit in which the inner tube is inserted, the conduit having a curved portion, a torch body including a tip portion and a nozzle, a torch holder having a gas supplying member that supplies a shield gas into a space between the inner tube and the conduit, a feed unit provided upstream of the torch holder to feed the welding wire forward to or backward from the inner tube, and a sealing mechanism for preventing a reverse flow of the shield gas to the feed unit. A gap is defined between the adjacent wires of the inner tube allowing the shield gas to flow therethrough, and permitting wear debris generated by abrasion of the welding wire sliding in the inner tube to be ejected out from the nozzle.

The disclosed technology generally relates to welding technologies and more particularly to electrode assemblies for arc welding, e.g., submerged arc welding. In one aspect, an electrode assembly for submerged arc welding comprises a contact tip portion and an extension portion arranged serially and configured to feed a consumable electrode therethrough. During welding, the contact tip portion is disposed to be distal to an arcing tip of the consumable electrode and the extension portion is disposed to be proximal to the arcing tip of the consumable electrode. The extension portion is configured to electrically insulate the consumable electrode from a work piece during welding with a solid insulating material surrounding the consumable electrode.

The disclosed technology relates generally to welding technologies and more particularly to electrode assemblies for arc welding, e.g., submerged arc welding. In one aspect, an electrode assembly for submerged arc welding (SAW), the electrode assembly comprising a head portion comprising a contact nozzle and an extension portion removably and serially attached to the contact nozzle and disposed to be proximal to an arcing tip of a consumable electrode relative to the contact nozzle. The extension portion comprises a ceramic sleeve configured to slidingly feed the consumable electrode therethrough, and a pair of metallic sheaths covering opposing ends of the ceramic sleeve.