This paper reports on the developments of elastomeric covering systems that are suitable for the protection of the surfaces of steel ship propellers, bronze propellers, rudderhorns, pump impellers, and other such marine surfaces. The development of covering systems for steel propellers is to sharply reduce the capital costs of propellers (by approximately 50 percent) and the cost of cathodic protection (by about 80 percent) by providing the necessary protection against cavitation erosion, erosion, and galvanic corrosion while providing a smooth (slick) propeller surface having lower hydrodynamic drag. For existing bronze propellers, the purpose of covering systems is to sharply reduce cavitation erosion damage and cathodic protection requirements, and to improve propulsion efficiency by reducing propeller drag. Results of extensive laboratory research on covering systems, leading to and including the full-scale testing and evaluation of a covered steel propeller, are discussed.
Protective coverings for steel propellers
Elastomere Schutzbeschichtungen fuer Schiffsschrauben
US Government Reports ; Mar ; 1-219
1984
219 Seiten
Report
English
MOLDS FOR MAKING PROTECTIVE COVERINGS OVER METAL STRUCTURES
European Patent Office | 2020
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