DECORATIVE COATING
The decorative coatings, in addition of being characterized by remarkable mechanical and chemical-physical properties, possess remarkable aestethical features. They provides lustrous metallic appearance and shades of particularly attractive colours for the furniture market, design and objects in general.
Their hardness permits to obtain also scratch and abrasion resistant surfaces. The decorative coatings, while maintaining the same basic properties of the functional ones (high hardness and good resistance to chemicals attacks), are characterized by lower thicknesses and temperatures of deposition. They are suitable for application on larger kind of substrates. Most of the coatings performed by CRT S.r.l. are therefore adaptable to aesthetic applications, considering that the shades and finishinga are the same already present in the coating catalogue. For further information contact the CRT technical department.
VACUUM HEAT TREATMENT
CRT provides also a vacuum heat treatment department equipped with 3 furnaces.
CRT, being part of the T.T.N. Group, employs highly qualified and specialized personnel, with forty years of experience in the sector gained within the group itself.
The idea of starting a dedicated department was born from the necessity to improve and optimize the service offered to the customer, permitting to obtain the best performance of PVD coatings starting from heat treatment, thanks to the synergy between the two processes.
CRT offers an extensive range of heat treatment services such as:
1 Vacuum Hardening with nitrogen quenching up to 8 bar
2 Annealing
3 Brazing
4 Cryogenic treatments up to - 196°C
5 Bright annealing
6 Stress Relieving
Other heat treatment services performed by our parent company T.T.N. SpA
1 Traditional hardening with water, polymer and oil quenching
2 Vacuum hardening with gas and salt bath quenching
3 Traditional and low pressure carburizing
4 Gas and plasma nitriding
5 Induction and laser hardening
6 Solution Annealing
For more information visit www.ttnspa.it
NITROCOAT
A state-of-the-art process that involves plasma nitriding and coating in a single cycle, developed by CRT and conducted in the latest generation PVD systems.
The coatings, due to the high hardness, require a substrate with good mechanical characteristics capable of providing adequate support. The execution of a surface hardening treatment limited to a few hundredths of mm in many cases allows to obtain significantly higher performances by the overlying coating.
The particular plasma generation technology avoids the so-called edge effect causing the over-nitriding of corners and sharp components, therefore preserving cutting edges.
Advantages
- Process speed, absence of intermediate processing.
- Nitriding with reduced or absent white layer in order to guarantee excellent adhesion of the coating.
- Applicable to a wide range of fields in combination with the majorities of PVD coatings
Applications
- Die Casting
- Plastic moulds
- Deep drawing and forming
CVD
Properties
- Excellent adhesion of the coating (also due to diffusion in the substrate).
- High penetrating power, with the possibility of covering pieces even with complex shapes and geometries (eg cavities, grooves, holes etc).
- Very variable composition of the layers. Wide possibility in the architecture of the multilayer coating.
- Composition of high thickness and density layers.
Applications
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Inserts for turning and milling
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Moulds for extrusion, cold shearing, coining, deep drawing and cold deformation
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Coatings for protections of graphite parts
POLISHING
The performance of PVD coatings is influenced by the surface finishing of the parts to be coated. The high hardness of the coating, in case of substrates with very high roughness, can be dangerous for the counterpart. The coating layer following the substrate finishing may produce a negative effect.
Hence, some types of application require careful surface preparation to ensure the best performance in operation.
For this reason CRT has widened the services offered to the customer by introducing a new dedicated polishing department which has the following types of technologies:
1 Isotropic polishing
2 Automatic polishing with abrasive flow
3 Manual polishing
The experience gained over the years allows us to support the customer in choosing the most suitable technology to improve the characteristics of the tools to be coated.
PICK-UP AND DELIVERY
CRT offers its customers a pick-up and delivery service at their factory every day in the following regions:
Lombardia, Piemonte, Emilia Romagna, Veneto, Friuli Venezia Giulia, Marche, Abruzzo and Umbria
To request the pick-up and delivery service, please contact: