Reproducible success

The superior properties of THERMCOAT® coatings ensure optimal results, increased productivity and add a great deal of value.

The excellent quality of our coating technology has been used across the entire spectrum of industrial production for over 20 years. Custom solutions maximise the benefits to customers in this and in other sectors:

  • Paper and printing industry
  • Manufacture of films and adhesive tapes
  • Production of hygiene articles
  • Construction of high-performance machines

 

Find out more about our coating processes and their working principles:

  • Plasma
    spraying
  • Arc
    spraying
  • High-speed
    flame spraying
  • Powder
    flame spraying
  • Wire
    flame spraying

Plasma spraying

A gas (e. g. argon, nitrogen, hydrogen or helium) is fed through an arc between a cathode and a water-cooled anode, which dissociates and ionises the gas. This creates an extremely hot (up to 20,000 K) and electrically conductive gas into which the coating material is introduced; it is then accelerated and is sprayed onto the workpiece to be coated.

Arc spraying

This is a high-performance wire-arc spraying process in which an arc is ignited between two electrically charged wires. At temperatures of approximately 4,000° C, the wires melt and are blown onto the surface of the workpiece by an atomising gas (e. g. compressed air, nitrogen or argon). With this process, layers with a thickness of 0.2 to 20 mm can be achieved. If hollow wire filled with ceramic or carbide material is used, then carbide layers can be produced.

High-speed flame spraying

A mixture of fuel and oxygen is constantly burnt in a combustion chamber. The fuel used could be paraffin, propane, ethylene or hydrogen, for example.

The high pressure of the burning mixture creates a very high-speed gas jet to which mostly powdered spray material is added and greatly accelerated. This is how very dense coatings with outstanding adhesion can be produced. Due to the relatively low temperatures, the material sprayed is subject to only slight metallurgical changes.

Powder flame spraying

Here, the powdered coating material is continuously melted in an acetylene-oxygen flame. As the combustion products expand, the powder is both melted and accelerated. With more than 100 different materials, a wide variety of types of coating can be produced. We discern here between self-levelling and self-adhesive powders. Self-levelling powders generally do not require a subsequent thermal process to melt and smooth them.

Wire flame spraying

Here the coating material, supplied as a wire, is continuously melted in an acetylene-oxygen flame. An atomiser gas (e. g. compressed air) is then used to further accelerate the mixture and spray it onto the workpiece.