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VOL XVI, NO 61

Cavitation Damage To This Tanker Propeller Repaired With Belzona

 
 

Industry:

Marine (MRNE)

 
 

Application:

Ships and Offshore Structures (SOS)

 
 

Customer Location:

Oil tanker in Argentina, South America

 
 

Application Date:

April 1997

 
 

Application Situation:

Cavitation damage to a 12-foot diameter tanker propeller.

 
 

Problem:

The large difference in pressure on the edges of this bronze propeller caused cavitation bubbles that in turn damaged the metal substrate after imploding onto the surface.

 
 

Products:

Belzona® 1321 (Ceramic S-Metal)

Belzona® 1311 (Ceramic R-Metal)

 

Substrate:

Bronze

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet SOS-2.

 
 

Belzona Facts:

Any polymeric coating that is subject to cavitation will be sacraficial, how-ever it is a lot more cost effective than welding and remachining. It is very time consuming to braze bronze and requires skill to rebuild significant metal loss.

 
 

Photographs Description

  1. Aft view of the tanker
  2. Surface preparation of the bronze propeller
  3. Close up view of grinding profile
  4. Finished application
 
 
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For more information about Belzona visit: www.belzona.com