thermal spray coatings

Surface optimization. Highest wear resistance.

wear optimization as a goal productivity as a result

When it comes to minimizing wear, DURIT is one of the leading companies worldwide. We also play a key role in the ever-growing coating market. The processes we employ are synonymous with technological innovation and greatly increase the performance and service life of parts, tools, and components. The number and variety of applications that can be optimized by our coatings is nearly limitless.

DURIT COATING SOLUTIONS—
TARGETED OPTIMIZATION OF PERFORMANCE AND ENDURANCE

HVOF

HVOF flame spraying is a highly kinetic process used to apply carbide or metallic coatings. Our experts use it to create extremely impermeable surfaces.

PROPERTIES
Ø Adhesive Strength: > 80 MPa
Ø Porosity: 0.5% to 1%
Ø Coating thickness: 100 to 500 μm

ADVANTAGES
• Low thermal stress of the substrate material
• High resilience with linear loads
• Material-independent and partial coatings possible
• High density of sprayed layer
• Thin layers with high dimensional accuracy

Products ::

Valve rods • Valve balls • Valve seats • Gates • Shaft sleeves • Pistons / Rods • Pump Impellers • Guide rollers • Extruder screws • Machine shafts • Guides • Bearing seats • Crushing jaws • Fill table plates • etc.

Typical Applications ::

Parts or components strained by abrasive, erosive or corrosive environments in a broad variety of applications; for example in valves, pumps, extruders, agricultural machines, mining, drilling and extracting technologies, and general mechanical engineering and machine construction.

HVOF

High Velocity Oxygen Fuel

» Carbides

WC/Co
WC/Co-Cr
WC/Ni
WC/NiCr
WC/NiCrBSiFe
Cr2C3/NiCr

APS

The most flexible thermal spray coating produces enough energy to melt any material and allows superior control to create optimal layer thicknesses and surface properties (mostly from Ceramic).

PROPERTIES
Ø Adhesive strength: 20 to 50 MPa
Ø Porosity: 4% to 8%
Ø Coating thickness: 200 to 1,000 μm

ADVANTAGES
• Large selection of material grades on a variety of materials
• Low thermal conductivity into the coated part or component
• Good control of layer thickness and surface properties
• Coating of internal bores possible
• Improvement of thermal or electrical isolation

Products ::

Valve balls • Valve seats • Gates • Shaft sleeves • Pistons / Rods • Pump impellers • Guide rollers • Extruder screws • Machine shafts • Guides • Bearing seats • etc.

Typical Applications ::

Parts or components strained by abrasive, erosive or corrosive environments in a broad variety of applications; as well as electrically isolating elements – for example in valves, pumps, extruders, drilling and extracting technologies, textile industry, and general mechanical engineering and machine construction.

APS

Atmospheric Plasma Spraying

» Ceramics

Al2O3
TiO2
Al2O3/TiO2
Cr2O3
Cr2O3/TiO2
ZrO2/MgO
ZrO2/Y2O3

EAWS

With mostly metallic coating materials this process results in massive protection against wear, improved corrosion resistance, thermal isolation, electrical insulation, as well as the improvement of visual properties.

PROPERTIES
Ø Adhesive strength: 15 to 40 MPa
Ø Porosity: 3%
Ø Coating thickness: 200 to 5,000 μm

ADVANTAGES
• Thick layers of 5 mm or more possible
• Increase of service life and decrease of maintenance costs
• Ideal for repair of machine parts and components
• Also works with molybdenum wear protection
• Enormously economical

Products ::

Shaft sleeves • Pistons / Rods • Turbine blades • Compressor blades • Machine shafts • Guides • Bearing housings etc.

Typical Applications ::

Parts or components strained by abrasive, erosive or corrosive environments in a broad variety of applications; as well as electroconductive elements – for example in pumps, drilling and extracting applications, aerospace industry, compressor design and general mechanical engineering and machine construction.

EAWS

Electric Arc Wire Spraying

» Metals

Cu
Mo
NiCr
NiCrMo
NiCrAIY

Turbine blades

EAWS Coating 

Housing

HVOF Coating WC/Co 

Sonotrode

HVOF Coating WC/CO 

Ball segment

HVOF Coating WC/Co 

Valve ball

APS Coating TiO2 

Lid for Mills

APS Coating Al2O3 

Yarn deflector

APS Coating TiO2 

SURFACE OPTIMIZATION­

With our coating processes we can protect parts and components for a long time.

Plunger

HVOF Coating CRC-MAX 

Manifold sleeve

HVOF Coating WC/Co 

Shaft sleeve

HVOF Coating WC/Co 

Guide roller

HVOF Coating WC/Co 

Plunger

APS Coating Bimetalic 

Fill table plate

HVOF Coating WC/Co 

Valve ball with seat

HVOF Coating WC/Co 

DURIT Produkte ©