Characteristics of the process
The ionic nitriding of steels and cast irons is a surface hardening thermochemical treatment that occurs through the diffusion of nitrogen and/or carbon in the substrate.
The depth of diffusion of nitrogen that can be achieved depends on the base material and the duration of the cycle.
The Dolzago department has 2 plants for ionic nitriding with maximum dimensions of Ø 1500 mm x 2100 mm and with a capacity of 6000 Kg, while the Cremella department has a plant measuring Ø 500 x 900 mm dedicated to processes such as nitriding titanium parts for the aerospace industry.
The advantages of ionic nitriding are:
- High reproducibility of the hard and ductile nitrided layer;
- Processing temperature between 400 °C and 800 °C;
- Lower cycle times at the same depth;
- Ability to control the formation of the 'white layer';
- No deformations;
- Reduction of the friction coefficient;
- Higher mechanical resistance to wear;