When is a trailing shield used?

Short Answer

Use a trailing shield when a standard cup or gas lens can’t provide enough shielding gas coverage.

Details

A trailing shield extends shielding gas coverage behind the weld puddle. This protects the weld as it cools and prevents oxidation.

Standard setups protect only the immediate arc zone. Trailing shields are used when full coverage is critical—especially on sensitive materials or demanding weld conditions.

• Extends shielding gas coverage beyond the arc
• Protects the weld during cooling
• Reduces oxidation and contamination
• Supports higher travel speeds

Common Uses

• Titanium welding (critical applications)
• Aluminum welding requiring maximum shielding
• High-speed or automated welding setups

Why It Matters

Without proper shielding, reactive metals like titanium will oxidize quickly, leading to weak welds and failed parts. A trailing shield ensures full protection where it matters most.

Shop Tip

If your welds show discoloration or contamination behind the arc, your shielding coverage isn’t enough—add a trailing shield.

Bottom Line

When standard shielding isn’t enough, a trailing shield gives you the extra protection needed for clean, high-quality welds.