FIELD: engine building.
SUBSTANCE: invention relates to ship propulsors, particularly, to propeller propellers and other ship propulsors. Screw propeller with protective metal-polymer coating consists of blades and hub covered with protective coating. Surface of blades and hub with thickness of 100–300 mcm contains two continuous layers. First of which is made of metal alloy with high chemical resistance and high mechanical properties. Second layer is made of thermoplastic polymer with low surface energy.
EFFECT: higher propeller screw resistance to electrochemical corrosion and strength characteristics, improved hydrodynamic and cavitation characteristics.
3 cl, 2 dwg
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| FRICTION PAIR OF RADIAL BEARING | 2007 |
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