Utilizing a hydrogen compound source as an arc stabilizer is counter-intuitive to standard formulation design practices which often strive to limit or eliminate hydrogen from the welding arc and weld pool. The present disclosure is directed to a tubular metal-cored welding electrode that comprises a metallic sheath disposed around a granular metal core in which the granular metal core comprises an alginate arc stabilizer (as a hydrogen compound source) configured to release hydrogen near a surface of a workpiece during welding. The tubular metal-cored welding electrode may further comprise primary de-oxidizers such as manganese and silicon. In certain embodiments, the amount of manganese in the tubular metal-cored welding electrode may be minimized or eliminated. The tubular metal-cored welding electrode may also comprise nickel or titanium.

Utilizing a hydrogen compound source as an arc stabilizer is counter-intuitive to standard formulation design practices which often strive to limit or eliminate hydrogen from the welding arc and weld pool. The present disclosure is directed to a tubular metal-cored welding electrode that comprises a metallic sheath disposed around a granular metal core in which the granular metal core comprises an alginate arc stabilizer (as a hydrogen compound source) configured to release hydrogen near a surface of a workpiece during welding. The tubular metal-cored welding electrode may further comprise primary de-oxidizers such as manganese and silicon. In certain embodiments, the amount of manganese in the tubular metal-cored welding electrode may be minimized or eliminated. The tubular metal-cored welding electrode may also comprise nickel or titanium.

A method of welding using a weld filler additive and a weld filler additive are provided. The method includes the step of welding the component with a filler additive comprising a sufficient amount of each of Co, Cr, Al, Ti, Mo, Fe, B, C, Nb, and Ni, the component including a hard-to-weld base alloy. The method further includes the step of forming an easy-to-weld target alloy on a surface of the component from the welding.

A twin wire welding apparatus including a first contact tube for guiding a first consumable electrode toward a weld puddle and transferring welding current to the first consumable electrode, a second contact tube for guiding a second consumable electrode toward said weld puddle and transferring welding current to the second consumable electrode, and a single power source connected to said first and second contact tubes for providing the same potential to said two consumable electrodes, and a method for operating such an apparatus.

A twin wire welding apparatus including a first contact tube for guiding a first consumable electrode toward a weld puddle and transferring welding current to the first consumable electrode, a second contact tube for guiding a second consumable electrode toward said weld puddle and transferring welding current to the second consumable electrode, and a single power source connected to said first and second contact tubes for providing the same potential to said two consumable electrodes, and a method for operating such an apparatus.

Systems and methods for pairing welding devices in a welding system. In one method, the method includes sending a pairing request from a first welding device to a second welding device. The method also includes receiving, at the first welding device, a response to the pairing request from the second welding device. The second welding device is physically connected to the first welding device. The pairing request or the response includes a change in welding power, welding consumables, or any combination thereof. The method includes pairing the first welding device and the second welding device after the first welding device receives the response to the pairing request from the second welding device.

Systems and methods for pairing welding devices in a welding system. In one method, the method includes sending a pairing request from a first welding device to a second welding device. The method also includes receiving, at the first welding device, a response to the pairing request from the second welding device. The second welding device is physically connected to the first welding device. The pairing request or the response includes a change in welding power, welding consumables, or any combination thereof. The method includes pairing the first welding device and the second welding device after the first welding device receives the response to the pairing request from the second welding device.

In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

The invention relates generally to welding and, more specifically, to welding wires for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). In one embodiment, a tubular welding wire includes a sheath and a core. The tubular welding wire includes less than approximately 0.4% manganese metal or alloy by weight, and the tubular welding wire is configured to form a weld deposit having less than approximately 0.5% manganese by weight.