caa a22 4500 477131506 CHVBK 20180405111705.0 cr unu---uuuuu 170330e19971101xx s 000 0 eng 10.1007/BF02767224 doi (NATIONALLICENCE)springer-10.1007/BF02767224 Protection of elements of the water passage of turbines from hydroabrasive wear [Elektronische Daten] [E. Brilov, É. Shpolyanskaya] Conclusions: 1. The hydroabrasive resistance of structural steels does not provide the necessary reliability of turbines operating on sediment-transporting rivers. 2. Case-hardening of structural steels and resistant protective coating are used for increasing the reliability and life of parts of the flow passage. 3. During actual service the effectiveness of casehardening decreases by half compared with laboratory tests, which is explained by the insufficient thickness of the protective layer. It is not advisable to use this type of surface protection for turbines with a high intensity of hydroabrasive action, since it is impossible to restore the protective layer under hydrostation conditions. 4. Two types of protective coatings have the highest priority: protective electrode hard surfacing on a cobalt base, for instance, TsN-2, which while providing a high wear resistance of the surface, E greater than 3, permits making a protective layer of the required thickness 3-5 mm and repairing the flow part of the turbine directly at the hydrostation; synthetic polyurethane-based compositions making it possible to completely cover the runners with a coating thickness of 1.5-2 mm. Destroyed polyurethane coatings can be restored directly at the hydrostation. Plenum Publishing Corporation, 1998 Brilov E. aut Shpolyanskaya É. aut Hydrotechnical Construction Springer-Verlag 31/11(1997-11-01), 699-702 0018-8220 31:11<699 1997 31 10749 https://doi.org/10.1007/BF02767224 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02767224 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brilov E. aut NATIONALLICENCE 700 1- Shpolyanskaya É. aut NATIONALLICENCE 773 0- Hydrotechnical Construction Springer-Verlag 31/11(1997-11-01), 699-702 0018-8220 31:11<699 1997 31 10749 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer