Duplex Treatment

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 CROSAL CrN DUMATIC TIGRAL VARIANTIC

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.

Coating Selection Guide

Advantages

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 CrN / CrCN – For a high level of adhesion
DUPLEX DUMATIC – Highest levels of hardness and abrasion resistance for forming applications
DUPLEX TIGRAL – Abrasion resistance and high thermal resistivity
DUPLEX VARIANTIC – The layer with high oxidation resistance

For details on our full North American eifeler coatings network please visit:
https://www.eifeler.com/northamerica/en/

voestalpine eifeler Coatings
EDRO Engineering, INC.
20492 Carrey Road
Walnut,California 91789
Tel: 909-594-5751
coatings@edro.com

Downloads

Duplex Treatment Brochure

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.

Applications

CROSAL®-plus is especially suited for the following applications:

Cutting

High-performance cutting
Hobbing
Dry broaching

Stamping/Forming

Fine blanking
Hot pressing
Al die casting

In Numbers

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
Color: slate-grey

Downloads

Duplex Crosal Brochure

Duplex CrN / CrCN – chrome nitride / chrome carbon-nitride – For a high level of adhesion

CrN exhibits good sliding properties with minimal lubrication. The high hardness and very low brittleness allow thicker CrN coatings with very good adhesion to the substrate.

The chrome-nitride coating is characterized by the following properties:

High hardness and adhesion.
Very good chemical resistance.
High-temperature resistance in air
Thicker layers possible
Low coefficient of friction against steel

Applications

Machining: Milling, turning, grinding and cutting-tools for the processing of non-ferrous metals, particularly Ti and Cu alloys.
Shaping: Drawing, stamping, pressing and deformation tools for the processing of non-ferrous metals, especially Ti and Cu alloys.
Aluminum die casting: (Duplex► coating of cores and form-giving active segments for the reduction of wear.

Plastic molding: Tools which are subject to corrosive and abrasive wear, e.g. through aggressive and hard filling materials.
Special features: The relatively high hardness, in combination with a low level of brittleness, allows the coating of thicker layers with good adhesion. This means an additional wear reserve for many applications. In areas where corrosion resistance is also required, as well as abrasion resistance, the CrN coating represents the ideal solution.

In Numbers

Hardness: (CrN) 2,000 ± 200 (CrCN) HV 2,300 ± 200 HV
Max. application temperature: 600 °C / 1,110 °F
Coefficient of friction against steel: (CrN) 0.3 – 0.4 (CrCN) 0.2 – 0.3
Coating thicknesses: (CrN) 1 – 6 µm (CrCN) 2 – 6 µm
Color: (CrN) slate grey (CrCN) silver grey

Downloads

Duplex CrN/CrCN Brochure

Duplex DUMATIC (TiCN) – Highest levels of hardness and abrasion resistance for forming applications

The new DUMATIC coating is always produced as a duplex version, i.e. using a plasma diffusion process on the base material. The coating has a structured multilayer design with a high proportion of TiC (approx. 4,000 HV). The uppermost layer is designed as a low-friction and colored cover layer

Product Features:

The DUMATIC coating produced using the PVD process at approximately 450 °C is deposited without any tool distortion
Polished surfaces are thereby not roughened
The DUMATIC coating displays a very low tendency for cold welding with high alloy stainless steel qualities
Due to its relatively low oxidation resistance, DUMATIC is not suitable for higher contact temperatures which can occur with semi-hot forming processes, for example

Applications

Forming technology: Drawing, stamping, pressing and forming tools for the working of high-alloy chrome/nickel materials and similar requirements. Because of its high hardness, it is especially suitable for cold forming and the cutting of high-strength sheet metals and for cold forging processes with high contact pressures.

In Numbers

Hardness: 3,700 ± 500 HV
Max. application temperature: 400 °C / 750 °F
Coefficient of friction against steel: 0.25
Coating thicknesses: 3 – 5 µm
Color: reddish/grey

Downloads

DUPLEX DUMATIC Brochure

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.

Applications

Cutting: TIGRAL’s special properties have also proven themselves in dry cutting. In interrupted cutting operations, this coating can at high contact temperatures bridge the gap between chip and wedge. However, the TIGRAL coating can also be employed to great advantage for reaming, particularly of medium and high alloy steels.
Hot forming: In the case of hot forming of sheets or solid material, TIGRAL distinguishes itself particularly. Here, the excellent hot hardness and resistance to oxidation come to the fore, but also the increased resistance with respect to the propagation of microcracks in the coating, which often represents a significant failure criterion.

Cold forming: The TIGRAL coating also demonstrates its suitability in the cold forming of sheet metals: high resistance towards abrasion with a low tendency for cold welding with steel.
Aluminum-die casting: The good resistance towards oxidation, together with the very good chemical resistance, means TIGRAL is very well suited for aluminum die casting applications. Especially in combination with the voestalpine eifeler Duplex option, TIGRAL presents a good solution for wear protection in die casting molds.

In Numbers

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

Downloads

DUPLEX TIGRAL Brochure

Duplex VARIANTIC Nitrate (TiAlCN) – The layer with high oxidation resistance

Excellent cutting, forming, stamping and precision cutting results. The temperature resistant TiAlN underlayer, in conjunction with the hard and low-friction TiCN top layer, delivers a combination which presents clear advantages in numerous applications. In the area of cold forming in particular, excellent results are achieved when Duplex VARIANTIC is used.

Property features:

Can be deposited on HSS and hard metal
Substantial friction reduction
Multilayer structure
High wear resistance
Tough, hard, and temperature resistant
up to 800 °C

Applications

Cutting: Milling, turning, drilling and cutting for the processing of high-alloy and low-alloy steels with high feeds and cutting speeds; very well suited for HSS endmills in the area of steel machining.
Forming: Drawing, stamping, pressing and forming took for the machining of high-alloy and low-alloy steels and e.g. stainless steel sheets.

Deposition technology

The deposition of the VARIANTIC layers is performed by means of PVD technology. This allows the deposition of the coatings on tool steels, HSS, cemented carbides or many other materials with temperatures less than 450° C.

In Numbers

Hardness: 3,500 ± 500 HV
Max. application temperature: 800 °C / 1,470 °F
Coefficient of friction against steel: 0.2
Coating thicknesses: 2 – 4 µm
Color: antique pink

Downloads

DUPLEX VARIANTIC Brochure