Post-oxidation treatment
Objective: Improve corrosion resistance
Post-oxidation is a thermochemical surface treatment used to improve corrosion resistance by forming a stable oxide layer on previously nitrided parts.
This process is an alternative to certain surface treatments covered by the Reach regulations.
To better meet the needs of mechanics, the Thermilyon Group has developed Thermi-Nitrox, a treatment combining nitrocarburizing and post-oxidation.
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Information to be communicated :
- Drawing of the part (possibly including: area to be protected).
- Number of parts per shipment per year.
- Nature of the steel: AFNOR (or commercial) designation - Specification of the layers to be produced (with machining allowance, if any).
- Previous treatments (pretreated, tempered, stabilized, annealed).
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Diffusion of nitrogen on the surface of the part to considerably improve mechanical strength and wear resistance on the surface, while maintaining good core strength. This treatment greatly improves wear resistance, but as the temperature is low (500°C), it causes very little deformation and can be applied to a finished part.
Diffuse carbon (carbon and nitrogen in the case of carbonitriding) on the surface of the part, to considerably improve the part's mechanical strength and wear resistance on the surface, while maintaining good core strength.
Type of steel, desired steel characteristics (hardness), quantity of parts per shipment and per year, part drawings and specifications. If possible, the operating mode of the part and its final use.
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