Plasdia & Plasmet
This type of surface treatment comprises extremely hard-wearing spray layers based on ceramic or carbide materials. Plasdia and Plasmet can be applied to metal, fibre-reinforced materials, and glass. They protect parts from abrasive and erosive wear, cavitation, and corrosion. The ceramic-spray layers also have excellent thermal and electrical insulating properties.
Plasdia and Plasmet treatments are performed by our German partner company LWK-PlasmaCeramic by means of powder or wire flame spraying, high-speed flame spraying, or atmospheric plasma spraying.
Characteristics of Plasdia & Plasmet
- Thicknesses from 0.1 to 2.0 mm
- Surface hardness of layers 600 - 1500 HV with particle hardness of approx. 2500 HV
- Electrically insulating
- Thermally insulating
- Good anti-stick properties
- Impact, jolt, and shock resistant
- Can be applied at temperatures of -150°C to 900°C
- Maximum dimensions L = 6000 mm, ø 1000 mm, and weight 2.5 T
- Other dimensions and weights on request
For sealing and running surfaces
For the spray layers, we use aluminium oxide, titanium dioxide, chromium oxide, or zircon oxide in its pure oxide form or a two to three-component mixture. Carbide on tungsten and chromium carbide base and further aluminium, copper, bronze, molybdenum, and various alloys are also possible. Thin layers (0.1-0.5 mm) are most common, but thick layers (0.5-2.0 mm) are an option too. There is no distortion or structural change thanks to the relatively low surface temperature during the spraying process (<200°C).
On smooth and/or polished surfaces, components are highly suitable for sealing and running surfaces on rotating or oscillating machine parts after Plasdia or Plasmet treatment. These could be axles, rollers, wear rings, bushings, injection plungers, valves and plug stems, and all seals with gaskets, cuffs, or O-rings. The typical counter-running material is bronze, carbon, silicon carbide, stainless steel, and hard and sintered metal. Rougher spray layers are very suited to the friction wear that occurs in processes such as rolling, mixing, and agitating, as well as on screw conveyors, thanks to their thicker layers.
Our work starts with research. From a straightforward material analysis to a more complex damage investigation. At our lab, almost anything is possible.