Tempering and quenching

Main heat treatments

Oil quenching

Applications
Mechanical components and other parts made of carbon steel, low-alloy steel, and case-hardened steel.

Technical Specifications
Pieces up to 1500 kg and dimensions up to 1400 x 1100 x 850 mm; maximum treatment temperature of 1050°C.

Salt bath quenching

Applications
Mechanical components and other parts made of tool steel, bearing steel, carbon steel, low-alloy steel, and case-hardened steel.

Technical Specifications
Pieces up to 900 kg and dimensions up to diameter 600 x height 1000 mm; maximum treatment temperature of 1050°C.

Vacuum quenching

Applications
Mechanical components and other parts made of tool steel, high-speed steel, super high-speed steel, and powder metallurgy steel.

Technical Specifications
Pieces up to 3000 kg and dimensions up to 1500 x 1500 x 1700 mm; maximum treatment temperature of 1300°C.

Tempering

Applications
Typically performed after quenching, carburizing, and carbonitriding, or in combination with cryogenic treatment.

Purpose
To tailor the material properties according to the desired application. Improves internal stress and ductility compared to fully hardened material.

Technical Specifications
To achieve a tempered microstructure post-quenching, components are heated to a specific temperature below Ac1. The tempering temperature and time depend on the type of steel and mass. Multiple tempering cycles are often required to achieve the desired properties.