A system and method of welding or additive manufacturing is provided where at least two welding electrodes are provided to and passed through a two separate orifices on a single contact tip and a welding waveform is provided to the electrodes through the contact tip to weld simultaneously with both electrodes, where a bridge droplet is formed between the electrodes and then transferred to the puddle.

For producing a welded ring, a band of a length corresponding to the circumference of the ring is bent into a ring and its two ends are welded together. The band ends to be welded together have an offset in the circumferential direction of the ring, the offset lying in the plane of the band. The welding is performed from both lateral edges of the ring, from the outside to the inside up to the offset. Welding having an overall improved welding quality and a higher tensile strength is thus obtained.

A hardfacing metal composition and method of restoring worn work string tubing by application of a hardfacing metal to the worn regions of the work string tubing.

Granular welding flux delivery devices and strip cladding systems with granular welding flux delivery devices are disclosed. A disclosed example granular welding flux delivery device includes a hopper having: an intake opening to receive granular welding flux; a chute; and an output opening to output the granular welding flux to an electroslag strip cladding process, a submerged arc welding process, or a submerged arc strip cladding process. The example granular welding flux delivery device further includes a chute divider positioned within the chute to reduce an intake rate of granular material through the intake opening by reducing a cross-section of the chute based on a dimension of the chute divider. The disclosed example granular welding flux delivery device includes an adjustable output cover attached to the chute proximate to the output opening to extend or retract a length of the chute by adjusting a location of the output opening along the chute.

Tip surfaces of aerofoils of a bladed disk are repaired by an additive layer manufacturing process in which a laser beam is directed at the tip surface to create an interaction zone while metallic powder is delivered from powder delivery nozzles onto a locus of delivery of larger area than the interaction zone. The bladed disk and the powder delivery nozzles are situated within a controlled environment enclosure, while a laser generating the laser beam is situated outside the enclosure. The laser interaction zone trajectory is controllable independently of the movement of the powder delivery nozzles and so can execute rapid accelerations and decelerations, and changes of direction, enabling complex space filling scanning patterns to be performed on the tip surface.

A system and method are provided for using a welding or cutting system that uses a physical key to lock or unlock welding parameters or operations. The key can be used to lock, unlock, store and track welding or cutting information and can be customized as needed.

A method for manufacturing a laminated core includes a laminating process of obtaining a laminate in which a plurality of core pieces are laminated, and a welding process of forming a weld bead which extends in a thickness direction of the laminate on a side surface of the laminate. In the welding process, a heat input when a center portion in a longitudinal direction of the weld bead is formed is greater than a heat input when an end portion of the weld bead is formed.

A welding system and method is provided for welding heavy plate, where the method and device include using a laser which directs a beam to a first weld puddle to weld at least a portion of a work piece and a welding torch to direct a first welding electrode to the first weld puddle while the beam is being directed to the weld puddle. The welding torch deposits the first welding electrode to create a first weld bead. A flux nozzle is employed to deposit a welding flux onto the weld bead, and a submerged arc welding torch is used to direct a submerged arc filler metal to the weld bead to create a second weld bead through a submerged arc welding process, where the submerged arc welding process melts a portion of the first weld bead to consume the melted portion into the second weld bead.

A method includes monitoring a submerged arc welding (SAW) operation in real-time; determining, based on the monitoring and in real-time, a discrepancy between a desired weld parameter and an actual weld parameter of a weld resulting from the SAW operation; and in response to determining the discrepancy, controlling a power supply, which provides power for the SAW operation, to modify at least one of balance or offset of an alternating current (AC) welding power signal supplied for the SAW operation to compensate for the discrepancy.

Methods of welding high manganese steel, the methods comprising: supplying at least one piece of high manganese steel; supplying the metal cored wire comprising a steel sheath with a core comprising powders of certain metal and carbon percentages and at least one of: i: sulfur in an amount less than 0.3 wt. %; or ii. phosphorous in an amount less than 0.03 wt. %; or a combination thereof; and the balance with iron; submerging the at least one piece of high manganese steel in a slag and arc stabilizer; and applying a current to the metal cored wire to produce a liquid alloy steel composition on the at least one piece of high manganese steel.