Plasma
Copper
420001
105-125A
CNC
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Product Overview
Hypertherm Part Number: 420001
Description: Nozzle, Gouging - 60A
Compatible Systems: Powermax65, Powermax85, Powermax105, Powermax125. (Note: Not for use on Powermax45).
Compatible Torches: All hand and machine torches for the above systems.
Process: Plasma Gouging
Amperage Rating: 60 Amps (Optimal for gouging; the system amperage can be set lower, e.g., 40A for lighter work).
Primary Function & Purpose
This is a specialized nozzle designed specifically for the process of plasma gouging (also called arc gouging). It is fundamentally different from cutting nozzles (like the FineCut 420151 or standard 420300).
Directed Airflow: It features a larger, specially shaped orifice designed to project a wide, fast-flowing plasma stream at a shallow angle to the workpiece.
Metal Removal: Instead of piercing through metal, this airflow melts a shallow groove or channel and blows the molten metal away. This is used for:
Removing old welds.
Scarfing (preparing bevelled edges).
Weld defect repair.
Removing rust, cracks, or defects from metal surfaces.
Alternative to Carbon Arc Gouging: Plasma gouging is a cleaner, quieter, and arc-flash-free alternative to traditional carbon arc gouging (air-carbon-arc).
Key Features & Design
Large, Bell-Shaped Orifice: The most noticeable feature is the significantly larger and often tapered exit hole. This allows for a broad, diffuse plasma stream perfect for washing away metal rather than making a precise cut.
Durable Construction: Made from high-conductivity copper alloy to withstand the intense heat and splatter-back of the gouging process.
Works with Standard Parts: Unlike the FineCut set, the gouging nozzle is used with a standard swirl ring and a standard electrode.
Associated Consumable Set
The 420001 Gouging Nozzle is used with standard-duty consumables, but requires a specific shield.
Electrode: Part# 220892 (for older systems) or 420911 (60A) / 420921 (80A) - A standard electrode is used.
Nozzle: Part# 420001 (This part - the Gouging Nozzle).
Swirl Ring: Part# 220890 (older) or 420110 (Standard 60A Swirl Ring).
Shield: Part# 420410 (Machine Gouging Shield) or 420411 (Hand Gouging Shield). This is critical. A standard cutting shield (420000 or 420400) cannot be used.
Applications and Usage
Primary Use: Metal removal and surface grooving.
Technique: The torch is held at a 40-60 degree angle to the workpiece and is pushed or pulled along the path to be gouged. The angle and travel speed control the depth and width of the groove.
Advantages:
Cleaner process than carbon arc gouging (no carbon deposits).
Significantly quieter.
No risk of carbon contamination in the metal.
Easier to learn than carbon arc gouging.
Symptoms of a Worn or Failing Gouging Nozzle
Reduced Gouging Efficiency: Less metal is removed, requiring more passes.
Uneven Groove: The gouged channel becomes irregular.
Excessive Splatter: The molten metal is not cleanly blown away, leading to more splatter around the work area.
Unstable Arc: The arc may sputter or fluctuate.
Visible Damage: A melted, eroded, or out-of-round orifice.
Critical Compatibility Notes & Warnings
CORRECTION OF QUERY: The part numbers in your query (220971 and 420112) are incorrect for this nozzle.
220971 is the FineCut Nozzle (45A). It is NOT compatible and is for a completely different process.
420112 is not a standard Hypertherm part number. The correct swirl ring is 420110.
Shield is Mandatory: You MUST use the gouging nozzle with the correct Gouging Shield (420410 or 420411). The gouging nozzle extends further out, and a standard shield would contact it, causing a short circuit and destroying the parts.
System Settings: The plasma system should be set to "Gouge" mode if available. This optimizes the gas flow and amperage for the gouging process.
Products are Plasma cutting torch OEM parts
Ref. FM.420001 Nozzle for Plasma Cutting Consumables
We have own factory and can supply plasma cutting parts (Shield, Retaining cap, Nozzle, Swirl ring, Electrode)
