The eifeler Duplex Treatment is the combination of a plasma nitriding process with the deposition of an eifeler PVD coating in one uninterrupted process.
Duplex Treatment – HPDC
Duplex treatment = Plasma nitriding + PVD coating in one process
The combination of a thermochemical plasma nitriding process with the following deposition of a voestalpine eifeler PVD coating in a uninterrupted vacuum system process we call duplex treatment.
The surface hardness of the tool material is definitively increased, which contributes considerably to the increase in performance of the PVD coating. Therefore we developed a nitriding process, suitable for this procedure, where it is performed before the coating process. Basically all coating and nitriding capable steel materials are suited for this process.
Tools are an application emphasis for which this procedure currently is selected regularly and successfully for the forming of high strength sheet materials. VARIANTIC or TiCN is often utilized in this manner.
- Ideal structure of a hardness gradient from the tough-hard tool core, through a higher supporting hardness in the interface, extending to the extremely hard and wear resistant tool surface.
- A considerably increased support effect therefore results for the extremely hard and brittle ceramic wear protection layer.
- The absorbing ability for pressure loads increases significantly!
Our well-proven and excellent Duplex treatment coatings:
- DUPLEX CROSAL® (ALCRN) – is eifeler’s next generation AlCrN based hard coating.
- DUPLEX TIGRAL – Abrasion resistance and high thermal resistivity
Duplex CROSAL® (AlCrN) – That your tools withstand even highest temperatures
CROSAL®-plus is eifeler’s next generation AlCrN based hard coating.
The new coating system is an advanced development of our well-established CROSAL® coating. As a result of optimized process parameters and a tailor-made coating microstructure this versatile high-performance coating covers all key requirements:
- High oxidation resistance
- Outstanding hot hardness
- Excellent coating adhesion
Your plus in metal cutting
CROSAL®-plus is perfectly suited for challenging applications within the fields of dry cutting, punching and forming.
CROSAL®-plus is especially suited for the following applications:
Hardness: 3.200 ± 300 HV
Max. temperature of operation: 1100 °C / 2012 °F
Coefficient of friction against steel: 0.45
Coating thickness: 2-5 μm
Duplex TIGRAL (TiAlCrN) – Abrasion resistance and high thermal resistivity
This coating, based on AlCrTiN, is characterized by its high hot hardness and its resistance towards oxidation and abrasion. These properties are the result of its nanostructure, which minimizes crack propagation within the coating, especially when subjected to shear loads.
Hardness: 3,300 ± 300 HV
Max. application temperature: 900 °C / 1,652 °F
Coefficient of friction against steel: 0.6
Coating thicknesses: 3 – 5 µm
Color: dark grey