Thermal Spraying
Protection and performance for surfaces

Thermal spraying is a proven surface refinement process. By melting and applying coating materials, durable layers are created, providing wear protection, corrosion resistance, or specific thermal and electrical conductivity—ideal for a wide range of industrial applications.

Processes

Arc Spraying

Arc spraying is based on an electric arc that melts two wire materials and sprays them onto the surface using compressed air:  

  • Cost-efficient solution for large-area applications.  
  • Suitable for corrosion protection on bridges, tanks and steel structures.  
  • Materials: Mainly zinc, aluminium and their alloys.  
  • Coating thicknesses: Typically between 100 and 300 µm, perfect for protective applications.  
  • Excellent for applications that require fast processing.

Plasma Spraying

Plasma spraying uses a plasma jet that reaches temperatures of up to 20,000 °C to process materials such as ceramics and metal:  

  • Wide range of materials, from metals to high-performance ceramics such as aluminium oxide or zirconium oxide.  
  • Ideal for applications that require high temperatures or chemical resistance.  
  • Layer thicknesses: Usually in the range of 50 to 300 µm, depending on the requirements.  
  • Frequently used in energy technology (e.g. gas turbines) and in aviation.  

High velocity oxygen fuel spraying (HVOF)

High velocity oxy-fuel spraying (HVOF) is characterised by the following:  

  • High particle velocity, which ensures excellent adhesion.  
  • Dense, abrasion-resistant coatings, ideal for applications in energy technology and mechanical engineering.  
  • Materials: Typically metals, alloys and hard materials such as tungsten carbide.  
  • Coating thicknesses: from 50 to 500 µm, depending on the application.  
  • The possibility of combining wear and corrosion protection in one step.  

High-velocity flame suspension spraying (HVFSS)

High-velocity flame suspension spraying (HVFSS) is a state-of-the-art process in which extremely fine particles are melted in a suspension and applied to the surface at high speed. This enables:  

  • Ultra-fine layers with high density and low porosity.  
  • Flexibility to process different materials such as ceramics, metal oxides or mixtures.  
  • Layer thicknesses: Typically in the range of 10 to 100 µm, ideal for precise applications.  
  • Application in areas that require high precision.