coatings

DURIT Coatings make parts and components even more resilient. Our experts design high-tech solutions with specific properties that really stand out.

» more effective against wear

Performance and longevityperfectly balanced.

The types of products we can improve by applying thermal coatings, laser cladding, PVD or CVD coatings are virtually infinite. Our coatings to improve wear -resistance exemplify the highest degree of technological innovation and result in drastically increased lifespan of parts, tools and components.

REDUCED
» Abrasion
» Erosion     
» Friction

INCREASED
» Resilience (Wear and Corrosion)

IMPROVED
» Conductivity (electrical, thermal)
» Insulation (thermal)

CREATED
» Bio Compatibility

thermal spray coatings:

More effectiveagainst wear

DURIT Thermal coatings are often the only option to drastically improve operational performance. For best results we carefully analyze wear tracks and patterns and possible causes of failure, including all available parameters, such as temperature, pressure, adjacent parts and the processed medium. Our latest flame spray method delivers unique and significantly improved application-specific properties – especially when it comes to durability and longevity.

THERMAL SPRAY PROCESSES

COATING MATERIALS

(Additional coating materials by request)

HVOF

High Velocity Oxi-Fuel

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CARBIDES

WC/CoWC/Co-CrWC/NiWC/NiCrWC/NiCrBSiFeCr2C3/NiCr

APS

Atmospheric Plasma Spraying

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CERAMICS

Al2O3TiO2Al2O3/TiO2Cr2O3Cr2O3/TiO2Cr2O3/SiOZrO2/CaOZrO2/MgOZrO/YO/CeOZrO2/Y2O3

EAWS

Electric Arc Wire Spraying

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METALS

CuCoAlZnMoNiAlNiCrNiCrMoNiCrAIY

HVOF

High Velocity Oxi-Fuel

HVOF-Flame Spraying is a high-velocity process, usually applying a carbide or metal layer, beschichtungen which allows our experts to create densely sealed surfaces.

 

Properties
Ø adhesive tensile strength: > 80 MPa
Ø porosity: 0,5 % bis 1 %
Ø layer thickness: 100 bis 500 µm

Advantages
» low thermal stress of the base material
» high resistance to linear stress
» possible to coat any material as well as partial coating
» high density of sprayed layer
» thin layers with high dimensional accuracy

APS

Atmospheric Plasma Spraying

The most flexible of all thermal spray processes produces enough energy to melt any material and allows superior handling to achieve – usually with ceramics – optimal layer thickness and surface characteristics.

 

Properties
Ø adhesive tensile strength: 20 bis 50 MPa
Ø porosity: 4 % bis 8 %
Ø layer thickness: 200 bis 1.000 µm

Advantages
» broad range of materials
» minimal heat transfer into the part
» superior control over layer thickness and surface characteristics
» possible to coat small inner bores
» improvement of thermal or electrical insulation

EAWS

Electric Arc Wire Spraying

This process allows massively increased protection against wear, improved corrosion resistance, thermal insulation, electrical insulation as well as enhancement of visual perception by using mainly metalic coating materials.

 

Properties
Ø adhesive tensile strength: 15 bis 40 MPa
Ø porosity: 3 %
Ø layer thickness: 200 bis 5.000 µm

Advantages
» possible to spray thickness in excess of 5mm
» increase of service life and decrease of maintenance cost
» ideal for repair of machine parts
» molybdenum wear protection possible
» extremely high economic efficiency

laser cladding:

Surface optimizationby laserdeposition welding.

To extend the life of machines and mechanical equipment, DURIT offers laser deposition welding services - adding preventative, optimized characteristics to tools, parts or components. These surface improvements contribute substantially to minimize wear and reduce cost.

LASER-BASED
COATING PROCESSES

COATING MATERIALS

(Additional coating materials by request)

LASER CLADDING

Laser deposition welding
Laser beam powder coating
»
weldable powders (carbide mixtures, alloys, metals) - compare to Stellit, Tribaloy, Colmoloy, Hasteloy, Inconel or similar

Laser Cladding

Laser deposition welding

Laser-based coating processes play a key role in today’s manufacturing and maintenance processes. Due to its high accuracy, mostly nickel-cobalt based alloys can be applied very precisely.

 

Properties
Ø adhesive tensile strength: > 300 MPa
Ø porosity: 0 %
Ø layer thickness: 0.2 to 5 mm and more

Advantages
» very good layer adhesion due to melt-metallurgic bonding
» partial coating as well as complex geometries possible
» high contour definition – even with complex parts and shapes
» creation of very fine microstructures
» limited heat transfer

PVD- and CVD-Coatings:

Value addedwear optimization

Our process and wear optimized PVD and CVD coatings increase the thermal and chemical resistance of tools and precision parts.

Considerable reduction of friction and adhesive tendencies.

PVD- and CVD-coatings.

With PVD and CVD processes you can achieve good wear resistance and high hardness, specifically tailored to each application. Both processes offer a variety of possibilities for targeted improvement of unique material properties with regard to i.a.:

» OXIDATION RESISTANCE
» CORROSION RESISTANCE
» BIOCOMPATIBILITY

EXAMPLES OF APPLICATIONS

» Forming, cutting, and punching tools:
Punches, dies, cut-off tools and moveable elements in general

» Injection molds for plastics and light metal alloys:
Mold surfaces, inserts for hot runner systems, ejector pins and other moveable components

» Machining tools:
Milling, drilling and turning tools or insert tips

» Special applications:
engineering components and wear parts i.a. seal faces, valve components, or bearings

COATINGS FOR ALL INDUSTRIES AND APPLICATIONS

PVD
COATING + COLORHardness ­HV 0,05Operating temperature max. in °CCoefficient of frictionWear resistanceFeatures
HardTiN®
26006500,7+good corrosion resistance
MegaTiN®2800 – 3100
10000,3++high hardness and toughness
HardTiL®33008500,5 - 0,7
++good corrosion resistance, good toughness
HardTiL ULTRA®®3100 – 3300
10000,5
+++high wear resistance
HardCrom®27009000,3 - 0,4
+very good corrosion resistance
HardTiC®27004500,2 - 0,3
+low friction coefficient
DiExtra®2700/12004000,3+low adhesion
DiExtraUltra®1470/30006500,3-0,4++very good corrosion resistance
DiaPlus®3300/14005500,3++very good thermal properties
MoldLub®20009000,2+low adhesion
DuraLub®2800 – 3000
6000,3 - 0,4++very good thermal properties
D-Mold®2000 – 25008500,3
++low adhesion
HardSilk®260011000,6+very high temperature resistance
Galaxy®360011000,5 - 0,7++very high temperature resistance
Hardinite®3500 – 370011000,5++++good toughness
HardTribo®3000 – 40009000,4+++good gliding properties
UltraImpact®2500 –30001000 -11000,5++very good stability
UltraImpact EXCELL®2800 - 30009000,3 - 0,4+++very high wear resistance, very high gliding properties
HardCut®40009000,2++++good stability



CVD
TiC/TiN
27005000,6++high toughness