430-12076 - Hypertherm 120476 Gouging Nozzle for Powermax 1100

Precision Gouging with Hypertherm Engineering

The Hypertherm 120476 Gouging Nozzle is a critical consumable component designed specifically for the Powermax 1100 plasma cutting system. Unlike standard cutting nozzles which constrict the plasma arc to a high-density stream for severing metal, this gouging nozzle is engineered with a wider orifice geometry. This design intentionally diffuses the plasma arc, creating a broader, softer heat zone that melts the base material while the gas stream blows it away. This allows for controlled metal removal without severing the workpiece, making it an indispensable tool for weld removal, crack preparation, and casting defect repairs.

Manufactured to Hypertherm's exacting OEM standards, the 120476 nozzle utilizes high-quality copper alloys optimized for thermal conductivity. Plasma gouging generates significant reflected heat, particularly when working in deep grooves or corners. The material composition of this nozzle ensures rapid heat dissipation, preventing premature melting of the orifice and extending the consumable's service life. Furthermore, the concentricity of the nozzle bore is machined to microscopic tolerances, ensuring the arc remains centered. A centered arc is vital for protecting the electrode and the torch body (PAC110) from catastrophic failure due to arcing against the sidewalls.

Integrating this nozzle into your Powermax 1100 setup transforms the machine from a cutter into a powerful gouging station. It operates effectively at the system's maximum output, typically 80 amps, providing aggressive removal rates on mild steel, stainless steel, and aluminum. By utilizing plasma gas rather than carbon electrodes, the process eliminates carbon contamination of the base metal, reducing the need for secondary grinding and cleaning before re-welding. This nozzle is the correct specification for operators seeking to maintain the validity of their system's warranty and performance metrics.

Operators should note that while the Powermax 1100 is a legacy system, maintaining it with genuine parts like the 120476 ensures it continues to operate at peak efficiency. The fluid dynamics within the nozzle are calibrated to work in unison with the swirl ring and electrode, creating a vortex that stabilizes the arc for smooth, consistent gouges.