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With plasma spraying all sprayable materials are used. The temperature in the arc zone approaches 20,000°C. The temperature in the plasma jet is still 10,000°C at a few centimetres from the nozzle exit.
In the HVOF (High Velocity Oxygen Fuel) process, powder is injected axially into a chamber, in which a gas flame is constantly burning under high pressure. There is no metallurgic change of both the sprayed material and the base material.
Electric Arc Spraying
Electric arc spraying is a simple, quick and economic spraying process. It uses two metallic wires as coating material. The wires are charged electrically with opposing polarity and guided into a pistol at an equal, controlled velocity.
For years this was the method to apply anti-corrosion topcoats and was also used for surface restorations. The spray wire is brought into an autogenous flame (2,900°C), where it melts through the heat.
Plasmajet is specialised in parts with a more difficult geometry.
Already a number of national and international companies chose Plasmajet as main contractor or subcontractor. In this, confidentiality and secrecy is always a matter of course.
Spray and fuse
This type of coatings is meant for extreme conditions, such as in the dredging and oil industry. Also chemical resistance can be acquired through this.
Plasma transferred arc
PTA produces top layers of an alloy, which is stronger and more corrosion resistant than the same alloy applied by TIG or autogenous processes.
Besides the specialised buttering, Plasmajet also carries out all traditional welding on machine parts with semi-automatic TIG or MMA welding, whether or not pulsed.
A dozen machines enable us to grind very diverse geometrical forms. For specific products it is also possible to work with profiled shaping blocks in order to achieve the correct precision.
Contrary to decorative chrome layers of 0,5µm, in the case of hard chrome the issue is the technical value of the chrome layer. Layer thicknesses of 30 to 2,000µm are here possible. Hardness: 62HRC.
Thermal spraying is an often applied technique for repairing damaged or worn machine components. The most important characteristic is, that no tensions or distortions can occur in the material.
Grit blasting or sand blasting is a technique where grit grains are blown against a component by compressed air. This way a certain roughness is obtained.
Nickel-plating can be done in 2 ways: electrolytically and auto-catalytically, also called chemical nickel plating. It is used as final layer or as under layer in case of hard chrome as protection against corrosion.
Through an electrochemical process it is possible to provide aluminium parts with an oxide layer.
For some wear sensitive components it is sensible to work with sintered ceramic. Under high pressure, ceramic powder is pressed and sintered up to 1,750°C to a solid ceramic component. In case of very precise parts.
As coating of pull rolls, rubber is often applied. Depending on the application, we determine the desired profile. For the pharmaceutical and the food processing industry there is an FDA authorized type.