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The proven cooperation with ASTRÖ (Institute for Hydraulic Research) for advancement of hydraulic components was continued and intensified in 2003. Further optimizations were achieved both with regard to the hydraulic equipment for turbines and shaft seals for nuclear power stations.
A new, efficient process for the manufacture of Pelton runners was developed and, for the first time, successfully applied in the supply of two turbine runners.
Other development activities were focussed on stock pumps for the pulp and paper industry. A new key component for heating stock suspensions was developed, the Dynamic Steam Heater. In pulp and paper production, most stock suspensions are heated with steam. Until now, the steam was mixed with the suspension statically, which caused pressure surges, deposits, and overheating of the stock. The new Andritz system blends the stock and the steam dynamically, with rotating nozzles, and thus avoids negative effects of the static process.
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