The term “thermal spray” stands for several different types of surface coatings. Thermal spray may be used for metallic and non-metallic components. Depending on the desired properties, we can coat your components with pure metals, metal alloys, oxide ceramic or carbide materials. An important advantage: The surface of the components to be coated is subjected to hardly any thermal stress (unlike in the case of deposition welding). Typical properties of a thermal spray coating are the homogeneous structure, crack free and good adhesion to the component.
Thermal spray coatings are particularly suitable for the following purposes:
Wear protection (abrasion/adhesion)
Protection against corrosion and oxidation
Thermal and electrical insulation
Targeted influencing of friction and sliding properties
How does thermal spraying work?
The materials (powder, wire) are melted or fused by means of a torch and are sprayed as spray particles onto the substrate surface to be coated. A relative movement between the torch and the workpiece produces the coating. Two types of energy influence their properties: thermal energy (fuel gas-oxygen, plasma, and arc) and kinetic energy (velocity of the particles).
Twice as good: Combine the advantages of 2 properties
With conventional polymer coatings, you can achieve good non-stick and sliding properties. If you also require a particularly high wear resistance, we often recommend a combination of thermal spray coating and plastic/polymer coating. The thermal spray coating serves as a metallic protective matrix (EXCALIBUR® internal link), the subsequent plastic/polymer coating as a top coat. The result unites the advantages of both systems: Wear protection/wear resistance plus non-stick and sliding properties.