KP3162-4B1 - Lincoln Electric Extended Life Subarc Contact Tip, 5/32 in (10-Pack)

High-Performance Consumables for Submerged Arc Welding

The Lincoln Electric KP3162-4B1 Contact Tip is a premium consumable engineered specifically for the rigorous demands of Submerged Arc Welding (SAW). In heavy industrial fabrication, the contact tip serves as the critical transfer point for welding current, often enduring extreme thermal and mechanical stress. This specific model is designed to accommodate 5/32-inch (4.0 mm) wire, a common diameter for high-deposition applications in shipbuilding, pipe mills, and pressure vessel manufacturing. The tips are manufactured to precise tolerances to ensure optimal electrical conductivity and stable arc characteristics, which are paramount for maintaining the integrity of the weld bead in automated processes.

Advanced Material Composition

Unlike standard copper contact tips which may soften and deform under the intense heat of continuous high-amperage welding, the KP3162-4B1 is constructed from a Copper Chrome Zirconium (CuCrZr) alloy. This precipitation-hardened material offers a superior combination of electrical conductivity and hardness. The addition of chromium and zirconium significantly raises the recrystallization temperature of the copper matrix, allowing the tip to maintain its structural rigidity even when subjected to the prolonged heating cycles typical of submerged arc operations. This resistance to thermal softening directly translates to reduced bore wear and ovaling, ensuring consistent wire feeding and arc targeting over the lifespan of the consumable.

Compatibility and Specifications

These contact tips are explicitly designed for compatibility with Lincoln Electric's K231-1 and K231-2 Submerged Arc Torches. The mechanical interface ensures a secure seat within the torch body, maximizing heat dissipation and current transfer efficiency. Each pack contains 10 contact tips, providing a cost-effective solution for maintaining inventory levels in high-volume production environments. By utilizing the KP3162-4B1, operators and welding engineers can expect improved process stability and a reduction in the frequency of consumable changeovers, thereby optimizing the overall efficiency of the welding cell.