KHIA headerKnow-How in Action

VOL XXXII, NO 7

Pintle Pin And Housing Rebuilt With Belzona

 
 

Industry:

Marine (MRNE)

 
 

Application:

Ships and Offshore Structures (SOS)

 
 

Customer Location:

Pacific Northwest, USA

 
 

Application Date:

October 2016

 
 

Application Situation:

Rudder pintle pin and housing on a large ship.

 
 

Problem:

Seawater had corroded the pintle pin and housing enough so that the pin was a loose fit in the housing.

 
 

Products:

Belzona 1111 (Super Metal)

Belzona 2111 (D & A Hi-Build Elastomer)

 

Substrate:

Cast Steel

 
 

Application Method:

The worst of the corrosion on the pin was undercut on a lathe and rebuilt with Belzona 1111. Next, the pintle housing was grit blasted and coated with Belzona 1111. The pin was coated with a release agent and lifted into the housing to form a perfect fit. The rebuilt housing was inspected and then reassembled using Belzona 2111 to seal the top and bottom of the pintle housing.

 
 

Belzona Facts:

The only alternative would have been to try to weld and rebore the tapered housing, cost unknown. The Belzona solution provides protection against corrosion for the pintle pin and housing and avoids the usage of hot work.

 
 

Photographs Description

  1. Pintle pin showing corrosion.
  2. Pintle pin rebuilt and ready to form new housing.
  3. Pintle housing showing corrosion before grit blasting.
  4. Pintle housing rebuilt, ready for final assembly with Belzona 2111 sealing both ends.
 
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