The German research institute Fraunhofer Institute for Laser Technology has developed a new metal part coating process called Extreme High Speed Laser Material Deposition (EHLA).
The coating is processed by a laser to form a molten pool with a small amount of powder added. The metal powder is then deposited by laser beam and movement between the components to form a thin, uniform coating. What makes EHLA different from other deposition processes is that the powder melts completely before it is applied to the surface of the part. This process can effectively reduce resource consumption by introducing approximately 90% of the material into the correct area, while other processes can only achieve 50%.
But the most outstanding part of the process is its amazing speed. With the EHLA process, coating processing can be performed at a speed 100 to 250 times higher than conventional laser material deposition speeds. Moreover, it has almost no heat during processing and can be used for heat-sensitive component coating processing. In addition, it is also possible to perform tandem coating processing. In the future, it will be possible for products to be protected from wear and tear during their life cycle.
Researchers say the new process protects metal parts from corrosion and wear without the need to deposit chromium that pollutes the environment. EHLA is environmentally friendly because it does not use chemicals. In addition, the coating adheres to the substrate in a material-locking manner to prevent peeling. And the process is also compatible with other coatings such as iron, nickel and cobalt based alloys. With these advantages, EHLA presents a promising application prospect.
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9 thoughts on “What is Extreme High Speed Laser Material Deposition(EHLA)?”
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