Carburizing and carbonitriding

Main thermochemical treatments

Carburizing

A surface hardening process with an effective case depth of up to 3 mm.

Applications
Products made of case-hardening steel (low-alloy steels), where wear resistance, compression strength, and/or dynamic load resistance are required, such as machine components for mechanical transmissions in the automotive, railway, and energy industries, and other machine parts.

Purpose
Improving wear resistance and mechanical properties of low-alloy steels, providing high surface hardness (over 60 HRC) while maintaining high core toughness.

Technical Specifications
Martensitic surface layer with high surface hardness, hardened to a depth of up to 3 mm. After carburizing and oil quenching, tempering is performed to achieve the most appropriate mechanical properties.
Pieces up to 1500 kg and dimensions up to 1400 x 1100 x 850 mm; maximum treatment temperature of 1050°C.

Carbonitriding

A surface hardening process with an effective case depth of up to 1.0 mm.

Applications
Highly stressed products, mass production of automotive parts, gears, and other finished products made of low-alloy or carbon steel.

Purpose
Improving wear resistance and dynamic strength of products. Offers higher surface hardness compared to carburizing while maintaining high core toughness. The dissolution of nitrogen in the austenitic zone results in a hardened layer with increased hardenability and high creep resistance.

Technical Specifications
The treatment occurs in the temperature range of 850°C to 890°C in a carbon and nitrogen-enriched atmosphere to achieve a martensitic layer up to 1.0 mm. Subsequently, tempering is performed to achieve the most appropriate mechanical properties.
Pieces up to 1500 kg and dimensions up to 1400 x 1100 x 850 mm; maximum treatment temperature of 1050°C.