Welding Purge Panel

An Orbital Tube Welding Purge Panel is a control and delivery system designed to manage the supply of inert purge gas (commonly argon) during orbital tube welding. Its main role is to ensure the weld zone’s interior atmosphere remains oxygen-free, preventing oxidation, discoloration, and contamination of the weld bead.
 

Definition
 

A purge panel is a compact, centralized unit that regulates purge gas flow, pressure, and timing to both the weld head and the tubing interior during orbital welding.

Key Functions
 

• Flow Control: Delivers consistent, controlled purge gas to prevent turbulence and maintain laminar flow inside the tube.
• Pressure Regulation: Ensures stable back pressure to avoid weld defects like concavity or blow-through.
• Timing & Sequencing: Automates purge cycles (pre-flow, during weld, post-flow).
• Monitoring: Some advanced panels include flow meters, oxygen analyzers, and alarms to verify purge quality.

Importance
 

• Guarantees clean, oxidation-free welds.
• Increases repeatability and consistency in critical welds.
• Reduces operator error by automating purge delivery.
• Saves time and gas consumption compared to manual setups.”