Nitrocarburising
The nitrocarburising process is critically controlled low temperature surface treatment process where nitrogen (and to a limited extent - carbon) is introduced into the surface of ferrous alloys by holding the metal at a suitable temperature in a fluidised bed furnace in contact with a nitrogen bearing gas (usually ammonia). After treatment several options are available for cooling depending on the type of surface finish required.
Nitrocarburising temperature for steels is between 550 oC and 700 oC.
General advantages
- Significantly increases wear resistance
- Improves fatigue life
- Freedom from galling and seizing
- A surface that is resistant to softening at temperature up to the nitriding temperature
- No significant dimensional change
Special advantages
- Shorter process cycle time e.g. 10-180 minutes compared to 12-90 hours in gas nitriding.
- Effective on all ferrous materials including carbon steels
- A tougher nitrided case in comparison with gas nitriding.
Gas nitrocarburising is carried out in our fluidised bed furnace (2 units)
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