Normalizing is a heat treatment used to refine steel microstructures and restore their mechanical balance.
The process consists of heating the material above the AC3 critical temperature, followed by cooling in still air. This transformation converts austenite into a fine ferrito-pearlitic structure with improved mechanical properties.
Normalizing improves grain structure, enhances homogeneity and relieves internal stresses introduced during forming, machining or forging.
Typical normalizing temperatures are approximately 50 °C above AC3, followed by controlled air cooling to achieve a uniform microstructure.
Temperature profile of normalizing process
To achieve optimal results, normalizing requires precise temperature control and a stable cooling environment.
- Heating 30–50 °C above AC3 or Acm
- Controlled soaking ensuring a homogeneous crystalline structure
- Controlled cooling until room temperature
- Atmosphere: typically neutral gas such as nitrogen
This controlled cycle produces a fine and uniform ferrito-pearlitic microstructure.
Technical principles of normalizing
Normalizing is essential for steels that require structural refinement and improved mechanical consistency.
- Grain refinement
- Transformation into a ferrito-pearlitic structure
- Elimination of stresses generated during forming
- Improved machinability
The process increases dimensional stability and prepares materials for further heat treatment or machining operations.
Codere expertise in normalizing process
Codere provides advanced normalizing solutions ensuring tight temperature control, consistent repeatability and optimal metallurgical results.
Codere systems guarantee uniform cooling and reproducible grain refinement across all load sizes.
- Precise AC3-level heating control
- Dedicated air-cooling stations integrated into C10/C11 modules
- Neutral atmosphere protection (N₂) during heating
- HTView supervision software for complete process traceability
- Swiss quality ensuring long-term reliability and low maintenance
Applications and industries
Forged parts
Machined steels, Structural components
Pressure-resistant components
Key advantages / Why Choose Codere
Microstructural homogeneity
Repeatability
T° precision
Reliability
Low maintenance
Traceability with HTView
Available furnace configurations for normalizing
System 250
Modular Sealed Quench Heat Treatment Line
On request
Custom manufacturing
Interested?
Contact us today. Our experts will give you all the information you need.
