The development of oil and gas fields requires high-performing drilling tools. These are subjected to huge stress and would not reach long lifetimes without wear protection. This is why special coatings, that are more and more frequently realized with laser cladding, have become the standard for some time now. Here, Laserline's LDF and LDM diode lasers have obtained very good results: their very even and calm molten pool prevents deformations of the basic material and creates high-quality coatings with excellent adhesion. Conventional hard plating methods, e.g. plasma powder cladding, do not gain sufficiently long lifetimes.
For customers engaged in oil extraction, mining, metal and paper industries, Technolgenia coats with the help of Laserline's diode laser components with a special tungsten carbide powder.
Source: Oerlikon Metco
The typical carbide layers meant to protect saw-blades, disc harrows or counter blades from wear and corrosion can be optimally realized with the help of Laserline’s diode lasers. Their calm molten pool leaves no impurities, and thanks to the superficial heat exposure, there is no delay to worry about. Iron carbide layers are possible, just as layers out of tungsten- or chromium-carbide.
Source: Fraunhofer ILT
As the most successful coating method up to now, hard chromium plating is threatened by an EU-wide prohibition, such that the industry is searching for alternatives. Hitherto, laser-based cladding seemed unsuitable because the process was too slow and did not allow for sufficiently thin coatings. However, the Fraunhofer Institute for Laser Technology (ILT) has developed a patented method, which enables high processing speeds as well as low layer thicknesses: the extreme high-speed laser cladding (EHLA). Initially, the method was only designed for coating rotationally symmetric components, but is also supposed to be available for coating other components in future.Laserline's high power diode lasers are successfully used in high speed cladding applications.