KP1968-4 - Lincoln Electric KP1968-4 Sub-Arc Flux Cone Nozzle, 3/4 Inch Opening

Precision Engineered Sub-Arc Consumable

Optimize your submerged arc welding operations with the Lincoln Electric KP1968-4 Nozzle Flux Cone. This specialized component is engineered to provide superior control over flux coverage, a critical factor in the quality of submerged arc welds. The nozzle features a 3/4-inch (19 mm) concentric opening that directs the granular flux around the electrode wire, ensuring the arc is completely submerged. This prevents nitrogen and oxygen from the atmosphere from contaminating the weld pool, resulting in clean, porous-free welds with excellent mechanical properties.

The KP1968-4 is designed for compatibility with specific high-amperage welding guns. It is the designated flux cone for the Lincoln Electric K112 and K113 submerged arc guns, often found in automated and semi-automated welding setups. Furthermore, it serves as a key accessory for the Magnum® 600 MIG gun series when utilized in sub-arc modes. The precise fitment ensures that the nozzle stays improved during operation, even under the thermal expansion and contraction cycles inherent in high-amperage welding.

Technical Performance and Durability

Constructed from high-grade materials, the KP1968-4 resists the radiant heat of the open arc (beneath the flux) and the abrasive nature of the flux material itself. The wall thickness and geometry are calculated to prevent premature burnout, extending the service life of the consumable compared to generic alternatives. In continuous welding environments, such as shipbuilding or tank fabrication, the longevity of the flux cone directly correlates to machine uptime and overall productivity.

Proper maintenance of the flux delivery system is essential for consistent weld bead appearance and penetration. A worn or damaged flux cone can lead to uneven flux coverage, resulting in "flash through" where the arc becomes visible, or insufficient slag coverage. Replacing your nozzle with a genuine Lincoln KP1968-4 restores the gun's original performance characteristics. This part is an integral element of the total welding solution, ensuring that the wire, flux, and power source work in harmony to deposit metal efficiently.