Belzona Provides Anti-Cavitation Resistance to Drive Shaft

KHIA ID: 9116

Industry: Marine (MRNE)
Application: SOS-Ships and Offshore Structures (SOS)
Substrate: Carbon steel

Customer Location: Portugal
Application Date: May 2023

Products: Belzona 1311 (Ceramic R-Metal), Belzona 1341 (Supermetalglide), Belzona 2141 (ACR-Fluid Elastomer), Belzona 2941 (Elastomer SP-Conditioner)

Problem: The customer was having issues with the drive shafts on their submarines suffering the effects of cavitation. As a preventative solution, they started to protect all drive shafts with Belzona.

1.) Driveshaft after grit blasting

2.) 2 coats of Belzona 1341 applied

3.) 1st coat of Belzona 2141 being applied

4.) Final application - 2 coats of Belzona 2141

Application Situation

Anti-cavitation system being applied to a drive-shaft of a submarine.

Application Method

This application was carried out in accordance with adapted versions of system leaflets SOS-6 & SOS-2. First, the drive shaft was grit blasted to SA2.5, achieving a 75-micron profile. After surface preparation, any required areas were rebuilt with Belzona 1311 before 2 coats of Belzona 1341 were applied. Finally, Belzona 2941 conditioner was applied before 2 coats of Belzona 2141.

Belzona Facts

Belzona was selected for its excellent long-term capabilities of resisting the effects of cavitation. The customer is pleased with the Belzona system and now applies the same Belzona materials to other driveshafts within their fleets.

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