Germany, a new material manufacturing company announced that the new EHLA laser metal coating process will be applied to the company's products. EHLA is a high-speed laser deposition technology that is patented by researchers from the Fraunhofer Laser Technology Institute in Aachen, Germany.
According to the researchers, the latest EHLA process is more efficient and more efficient for metal coatings, which is 100 times the tradition of existing technology. Laser deposition welding technology has been around for many years and has become the best metal coating process due to its excellent voids and weldability of seamless metal coatings, and the technology allows metal to be used in different materials with large differences Coating operation.
Due to speed limitations, the biggest problem with laser deposition welding is to coat large parts. With the latest EHLA process, users can now produce 250 square centimeters per second of coating, which is a huge leap in terms of the wonderful 10-40 square centimeters of traditional craftsmanship.
Fraunhofer researchers are able to achieve higher rates by fine-tuning the deposition process. As they say, standard laser deposition welding requires the use of laser melting parts on the surface of the pool. The laser melts the metal powder at the same time, gradually adding the coating and fusing it to the surface of the object.
Researchers found that by using this 3D printing process, the laser was used to heat the above solder powder fill material to achieve faster results, heating it to almost melt, so that it reached the bath to melt the time required to significantly reduce.
At present, the technology can achieve a layer thickness of 10 to 300 microns, while the minimum coating thickness of about 500 microns before. By using finer laser focusing, the technology also uses less energy than peers.
In view of the company has begun to deploy multiple series of EHLA system products, the staff said they will be directly integrated into the system to the current system. "As far as laser focusing is concerned, our diode lasers and disc lasers are suitable for EHLA," said Antonio Candel Ruiz, laser surface treatment specialist.