Carburizing / Carbonitriding
Carburizing is a case-hardening process that enriches the surface of low-carbon steel with carbon at elevated temperatures, followed by quenching to produce a hard, wear-resistant outer case while retaining a tough, ductile core. The result is excellent contact fatigue resistance, high surface hardness, and deep case depths suited to heavy-duty applications in gears, shafts, and bearing components.
Our capability advantage
We offer both Sealed Quench Furnace (SQF) carburizing for batch production and vertical carburizing for long or oversized components up to 2.5 meters in height in pit type furnaces — enabling treatment of shafts, spindles, and structural components that most facilities simply cannot accommodate.
Why choose Carburizing / Carbonitriding?
Deep case hardness
High surface hardness with a tough core for impact-loaded parts
Fatigue resistance
Compressive residual stresses boost bending and contact fatigue life
Long component capacity
Vertical capability up to 2.5 m for oversized shafts and bars
SQF batch processing
Sealed quench furnace for consistent, atmosphere-controlled batch runs
Process specifications
| Process variants | SQF (Sealed Quench Furnace), Pit Type Furnace |
| Max vertical component | 2.5 metres |
| Quench medium | Hot Oil (SQF), Cold Oil (Pit Type Furnace), Polymer, Brine, Molten Salts |
- Low-carbon Steels
- Case-hardening Grades
- Compatible Alloys
Industries served
- Automobile
- Defence
- Oil & Gas
- General Engineering