This disclosure relates generally to arc welding. In an embodiment, a welding system has a welding gas supply system configured to supply a gas flow including a shielding gas and a fluorine-containing gas to a weld pool. Furthermore, the shielding gas is configured to control an atmosphere surrounding the weld pool, the fluorine-containing gas is configured to reduce diffusible hydrogen in the weld pool, and the fluorine-containing gas is substantially free of sulfur.

System and method of reducing diffusible hydrogen in weld metal

A method to replace a contact tip in a welding system includes applying a first force toward a neck of a welding torch to remove the contact tip via a quick release mechanism. Additionally, the method includes inserting a new contact tip into the quick release mechanism and applying a second force on the new contact tip toward the neck of the welding torch until the new contact tip is locked in place within the quick release mechanism.

Contact tip and receiving assembly of a welding torch

This disclosure relates generally to welding, and more specifically, to submerged arc welding (SAW). In an embodiment, a welding system includes a gas supply system configured to provide a gas flow. The system also includes a wire supply system configured to provide welding wire, and a flux supply system configured to provide flux near a welding arc during submerged arc welding (SAW). The system further includes a welding torch assembly configured to receive the gas flow and the welding wire and to deliver the gas flow and the welding wire near the welding arc during SAW.

System and method for submerged arc welding

A welding torch system includes a diffuser assembly that includes a locking mechanism to receive a contact tip. Additionally, the welding torch system includes the contact tip, which includes locking elements configured to interact with the locking mechanism of the diffuser assembly to secure the contact tip within the diffuser assembly. Further, the contact tip is rotated within the diffuser assembly to securely align the locking elements with the locking mechanism.

Contact tip rotary lock of a welding torch

A welding torch system includes a nozzle, a contact tip retainer assembly, and a diffuser assembly. The diffuser assembly couples to the neck of a welding torch. Additionally, the welding torch system includes a contact tip axially secured between the contact tip retainer assembly and the diffuser assembly. Further, the nozzle axially secures the contact tip retainer assembly and the contact tip to the diffuser assembly.

Contact tip and coupling assembly of a welding torch

Embodiments of an insulated sleeve and a perforated screen may be used in a nozzle assembly for a welding torch. In one embodiment, a welding system includes an electrically insulated sleeve and a perforated screen disposed adjacent to the electrically insulated sleeve. The perforated screen is configured to be captured removably between a nozzle and a contact tip of a torch head, and the perforated screen is configured to be installed and removed independent of the nozzle.

Welding torch having nozzle assembly with independently removable components

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Welding torch having nozzle assembly with independently removable components