Propeller Cavitation & Corrosion Eliminated with Devcon® Coating Case Study
■Large ship propeller casings experience cavitation and corrosion due to the high speed, hydro pressures, and erosive forces from water and particles. This cavitation leads to inefficiencies of operation, increased damage to the propulsion system and a potential reduction in engine durability.
■To minimize damage and retain operational efficiency, inspection & maintenance is performed on these casings every five years.
●Solution
■In May 2016, the Propeller casing was sandblasted to remove all corrosion, oxidation and to expose the white metal underneath. Machinable Devcon ® Titanium Putty Coating was used to repair the cavitation and restore missing pieces of metal to the original dimensions. Corrosion protection was achieved by applying two layers of Devcon ® Brushable Ceramic Blue Coating by hand. The propeller and ship were then returned to service.
■In June 2021, the ship was drydocked as part of the regular maintenance routine. Inspection of the propeller casing showed minimum damage occurred during the 5-year period. The casing exhibited minimal amounts of cavitation and oxidation on the metal. Given this outstanding protection, the Devcon products were used on this second maintenance cycle to repair the propeller casing and return it to service.
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Case Study |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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November 2021 |
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1.9 MB |
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