Hardening Furnace

Hardening Furnace & Applications

Hardening is the process of heat treatment in which steel is kept at a suitable temperature till it gets transformed into austenite and then quenching it rapidly.

Based on the carbon content present in the steel, the temperature for austenitizing is decided. By increasing the heating time, the core gets completely transformed into austenite. The final microstructure of the hardened steel would be ferrite or martensite.

Parts, where core hardening is specified, shall be tempered at a temperature not less than 280°C above the nitrocarburizing temperature. In the process of metal hardening, the mechanical properties of the components are imparted to make it fit for use.

Hardening Furnaces by Therelek

Pit Type High Temperature Furnace

Pit type sealed retort furnaces are of a cylindrical design vertically erected with a positive sealing mechanism on top in order to contain and preserve heat and atmosphere during a process cycle.

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Horizontal Vacuum Furnace

Our Horizontal Vacuum Furnace has cold wall construction with metallic/graphite hot zone. The door swivels sideward and the material is loaded from the front.

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Vertical Vacuum Furnace

Therelek’s Bell furnace is designed with optimal performance for high sensitivity and delicate components.

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Sealed Quench Furnace

Therelek’s Sealed Quench Furnace line consists of preheating and tempering furnaces, washing machines, stationary table, hydraulic lifts and charge transfer systems

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Continuous Mesh Belt Furnace

A multi-zone control environment is present in a continuous high-temperature furnace, often with a single pre-heating zone,

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Chamber Furnace

Therelek’s chamber furnace can operate up to 1800°C. These furnaces are usually rugged, refractory based construction

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Roller Hearth Furnace

Roller hearth furnaces are designed for continuous production and easy maintenance to handle large size and weights

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Bogie Hearth Furnace

Our standard bogie hearth furnace goes up to 1500°C, however, we make custom designed furnaces for any special requirements

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Low Temperature Pit Type Furnace

Pit type air circulation furnaces are installed with the opening at ground level or just above it. These are low-temperature furnaces with operating temperatures up to 650°C.

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Hardening Furnace