Forge 258

Envirofluid Forge 258 is a high-performance foaming agent formulated specifically for rock tunnel boring machines and abrasive ground conditions. It generates a consistent, stable foam that helps condition cut rock at the face, improves material flow, and prevents the build-up of dust and fines on the cutterhead. By keeping cutting tools cleaner and reducing friction, Forge 258 helps lower wear, stabilise performance, and support smoother, more continuous excavation in hard rock environments.

Key Benefits

• Produces a consistent, stable foam to enhance rock face conditioning and control cuttings.
• Helps reduce dust and fine build-up on the cutterhead.
• Reduces friction and supports lower cutter wear and longer tool life.
• Improves material flow and excavation stability for smoother tunnelling in abrasive formations.
• Works with standard foam pumps and injectors with no special modifications noted.

Applications

• Rock operations
• Hard-rock tunnelling projects
• Abrasive or highly fractured rock conditions
• Tunnelling environments where dust control and cutterhead protection are critical

Standard Dilution Rates

• Typically mixed at approximately 1–5% by volume in water through a foam generator.
• The solution is injected as foam into the excavation chamber with compressed air.
• Foam expansion and injection ratio can be adjusted to suit face conditions and excavation requirements.
• Can be dosed through existing foam lines or directly at the cutterhead input.