KHIA headerKnow-How in Action

VOL XXII, NO 2

Belzona® Seals Tailshaft Liner

 
 

Industry:

Marine (MRNE)

 
 

Application:

Ships and Offshore Structures (SOS)

 
 

Customer Location:

UK Coastal Tanker operator

 
 

Application Date:

March 2005

 
 

Application Situation:

240mm Tailshaft from a 2500 Tonne Deadweight Coastal Products Tanker, passing through aft peak tank.

 
 

Problem:

The bronze liners had worn and required changing. The body of the tailshaft was coated with a vulcanized rubber lining which was generally intact. Following changing of the Bronze liner the Rubber lining was damaged and not sealing. This could have lead to crevice and bi-metallic corrosion.

 
 

Products:

Belzona® 1111 (Super Metal)

Belzona® 2911 (Elastomer QD Conditioner)

Belzona® 2941 (Elastomer SP-Conditioner)

Belzona® 2141 (ACR-Fluid Elastomer)

 

Substrate:

Steel, bronze and rubber

 
 

Application Method:

The rubber lining was cut clean away, and roughened using the Belzona Roughing brush. The Bronze liner was tapered to meet the rubber, and left with a rough thread and rebate groove. Following gritblasting of the shaft, Belzona® 1111 was applied between the liner and lining. After Conditioning, Belzona® 2141 was applied to seal between the rubber and the bronze.

 
 

Belzona Facts:

Using Belzona allowed the customer to take advantage of sealing between rigid and flexible surfaces and prevented the customer needing to strip the previous rubber lining from the shaft.

 
 

Photographs Description

  1. New liner fitted to shaft 
  2. Preparation and conditioning complete 
  3. Belzona® 2141 completed application 
  4. Tailshaft complete – all works were undertaken on the lathe
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com