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References & Cases studies
Real-time molten metal chemistry monitoring
Online monitoring of thermal spray processes for the shop floor
Individual particle characterization device for thermal and cold spray processes
Non-contact accurate wall thickness, temperature and length measurement for process monitoring.
Long pulsed laser-ultrasonic detection laser
Earlier insight
changes everything.
Automated welding work cell for pipe spool prefabrication
Tecnar develops, manufactures and markets advanced sensors to optimize industrial processes.
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DPV innovative technology

In thermal spray, a material initially in the form of solid powder or wire is fed to the high-temperature spray torch to be melted and accelerated toward the parts to be coated. Before impinging on the substrate, the material is in the form of liquid droplet/particles, ranging from 1 to 150 microns in size, depending on the application. The particles typically travel at velocities from 50 to 1200 m/s, depending on the type of process/spray conditions used and their surface temperature may vary from 1,000° to 3,500° Celsius. The DPV measures the infrared radiation emitted by the liquid droplets and uses that data to calculate the individual particle’s temperature, velocity and size.

"At Forschungszentrum Jülich, we have used the DPV extensively and successfully for over 15 years to better understand and optimize our thermal spray processes. Its unique capability to simultaneously measure the temperature, velocity and size of individual particles and to perform cross-sectional maps of the spray plume has had a tremendous impact on our activities in the fields of process development, parameter optimization and quality management."

Dr. Georg Mauer
Head of Thermal Coating Technology Team
Institute of Energy and Climate Research (IEK-1)
Forschungszentrum Jülich GmbH, Germany
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