How Nanokarb Works

In conventional green sand moulding, coal dust or lustrous carbon additives (LCA) combust when molten metal enters the mould. This combustion creates a gas barrier that prevents metal-sand fusion. But it also triggers a chain reaction — temperatures spike in the backing sand, water evaporates prematurely, bentonite loses its bond strength, and the sand system degrades with every cycle.

Nanokarb takes a fundamentally different approach. Its ceramic nanoparticles, impregnated into a quasi-graphitic carbon matrix, form a superior non-wetting barrier between the molten metal and sand — without combustion. Nanokarb has 0% volatile matter at 400°C and less than 10% at 925°C, so the destructive chain reaction never starts. The backing sand stays cooler, water is preserved, and bentonite performs at its full potential.

This is also why 1 kg of Nanokarb replaces 2 kg of conventional coal dust. While both have similar LOI values, the difference is in how they perform. Coal dust relies on combustion to create a lustrous carbon layer — a process that wastes energy and degrades your sand. Nanokarb's ceramic nanoparticles create a more effective non-wetting barrier at the mould-metal interface through their engineered surface properties, not through burning. The result is better protection with less material, and none of the collateral damage.

Proven Results Across India and the EU

Nanokarb is commercially used in foundries across India and the European Union. Results are consistent regardless of foundry size, moulding line type, or metal grade: