HVOF coating of screws, twin screws and rotors with self-developed CarbideX powders
Extreme Coatings GmbH
AustriaNew on Amplifa
About Extreme Coatings
Extreme Coatings GmbH coats complex industrial components using thermal HVOF spray technology and protects them against mechanical wear and corrosion. The focus is on injection moulding and extruder screws, twin screws, as well as rotors and Continuous Mixing Rotors for plastics processing, compounding and the gas and oil industry. Specially developed powder formulations such as CarbideX C1000 and CarbideX CPR are used, based on hard carbides (tungsten carbide), ceramics and other alloys. The coatings achieve a hardness of 62–72 HRC, a density of 98% and are crack-free; layer thicknesses of 0.08 to 1 mm are possible. After coating, high-gloss polishing achieves a surface quality of Ra 0.1 to 0.4 µm. In addition, the company offers stripping, repair and recoating of rotors, making multiple overhauls possible.
- Site
- Austria
- Processes
- HVOF thermal spray coating (coating of screws, twin screws, rotors), Coating of injection moulding and extruder screws, Coating of twin screws (high tungsten carbide content), Coating of rotors (Continuous Mixing Rotors), Stripping and repair of rotors incl. recoating and high-gloss polishing, HVOF thermal spray coating (Thermal Spray Coatings), Coating of twin screws, Coating of rotors and continuous-mixing rotors
- Materials
- Tungsten carbide, CarbideX C1000, CarbideX CPR, Hard carbide, Ceramics, HVOF thermal spray process, Ceramic
- Industries
- Plastics processing (injection moulding, extrusion), Compounding/mixing technology, Gas and oil industry
- 01
Enquiry and quotation
- 02
Stripping or preparation of components
- 03
HVOF thermal spray coating
- 04
High-gloss polishing
- 05
Quality inspection
- 06
Shipping
Materials & Processes
HVOF thermal spray process
Thermal spray process for applying dense, crack-free protective layers to complex industrial components.
CarbideX C1000
Powder formulation with a high tungsten carbide content as a chromium replacement, e.g. for injection moulding screws and Continuous Mixing Rotors.
CarbideX CPR
Powder formulation with improved protection against abrasion and corrosion, also in chloride-containing environments.
Tungsten carbide
Hard carbide component of the coating powders for high wear protection against abrasive fillers.
Hard carbide
Component of the self-developed powder formulations depending on the application.
Ceramic
Component of the powder formulations for protection against abrasive and corrosive wear.
Sites
Austria
ATProduction and coating
- Materials
- Tungsten carbide, hard carbides, ceramics, alloys (CarbideX)
- HVOF thermal spray system
- Polishing
Coated Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| HVOF thermal spray coating (coating of screws, twin screws, rotors)Surface | Ra 0.1 to 0.4 µm (after coating) | – | – | – | Tungsten carbide powder (CarbideX C1000, CarbideX CPR), Hard carbide, Ceramics, other alloys |
| Coating of injection moulding and extruder screwsSurface | Ra 0.1 to 0.4 µm | – | – | – | CarbideX powder formulations (hard carbides, ceramics) |
| Coating of twin screws (high tungsten carbide content)Surface | – | – | – | – | Tungsten carbide (CarbideX) |
| Coating of rotors (Continuous Mixing Rotors)Surface | – | – | – | – | CarbideX C1000, CarbideX CPR |
| Stripping and repair of rotors incl. recoating and high-gloss polishingSurface | – | – | – | – | CarbideX CPR |
Additional services