The ANDRITZ Hydro Coating and Repair service has specialized workshops for the coating and repair of process equipment components for sectors such as hydropower, mining and pulp and paper, among others. In Chile, we have one workshop located in Colina.
We have in-depth knowledge of plating technologies, from simple powder and wire processes by gas combustion to electric arc processes and the most advanced processes via plasma spray and HVOF.
Using state-of-the-art equipment allows us to apply most coating systems, with materials specially designed for different technical requirements.
ANDRITZ Hydro has the necessary facilities and machinery to restore pieces and parts through welding processes (SMAW, GTAW, GMAW) especially for the hydropower industry.
We use certified metrology instrumentation, apply quality assurance concepts and work with operating procedures according to the manufacturer manuals for equipment, products and components. We operate machine tools (lathes, grinding machines), handling equipment (turning tables), acoustic booths for plating, booths for welding repair processes with fume extraction, surface preparation equipment (pressure and vacuum shot blasting machines), robotic systems in our Multi Coat Control Center, specifically dedicated to thermal spraying processes.
Fully coated Francis runner (Karcham Wangtoo, India)
ANDRITZ Hydro has a high competence center located in the city of Kriens, Switzerland, which has a laboratory where new materials and coatings are developed and tested under simulated abrasion conditions. For example, SXH-70 and SXH-80, both tungsten carbide alloys, which have proven to be very effective for the protection of parts and pieces exposed to high abrasion, as is the case of hydraulic turbine components.
Over the last years following main developments in coating components were done:
If coated parts operate under severe hydroabrasive erosion conditions the SXHTM hardcoating gets locally damaged and the base material is worn away. For these damages certain repair procedures with hard coating or polymer coating have been developed.
Successfully combating abrasive wear on critical parts and components of hydraulic turbines since 1986.
Pelton turbines* worldwide coated parts
since 1996
* all figures by 06/2016
Francis / Kaplan turbines* worldwide coated parts
since 1996
Pelton turbine runner: to the interior of the buckets and entrance area on the exterior of the buckets.
Francis turbine runner: inlet channel as deep as possible and rotating part of the labyrinths.
Kaplan turbine runner: Blades
ANDRITZ performs welding repairs, machining and grinding as well as thermal treatments.
We have the ability to perform on-site work, moving our equipment and personnel, which allows us to work directly on the machines or equipment without the need to disassemble and move them, saving the customer the associated production costs.
This particular capacity, backed by years of experience, has led us to carry out important on-site jobs in Argentina, Brazil, Ecuador, Colombia, Taiwan and South Korea.
Thermal treatments
