KHIA headerKnow-How in Action

VOL XXIX, NO 71

Belzona® Rebuilds Spiral Casing Of A Francis Turbine

 
 

Industry:

Power (POWR)

 
 

Application:

Positive Displacement Pumps (PDP)

 
 

Customer Location:

Hydropower Plant, France

 
 

Application Date:

February 2001

 
 

Application Situation:

Spiral casing of a Francis turbine.

 
 

Problem:

Corrosion, erosion and cavitation of the casing leading to vibrations and loss of efficiency.

 
 

Products:

Belzona 1311 (Ceramic R-Metal)

Belzona 1341 (Supermetalglide)

Belzona 5811 (Immersion Grade)

 

Substrate:

Steel

 
 

Application Method:

The casing was rebuilt with Belzona 1311 in accordance with Belzona Know-How System Leaflet PDP-6 and then protected with Belzona 1341 where the turbine fits. Then, Belzona 5811 was applied on the other parts.

 
 

Belzona Facts:

The power group has recovered its full efficiency and long-term protection was provided to the casing.

 
 

Photographs Description

  1. Pump casing
  2. After grit-blasting
  3. Casing rebuilt with Belzona 1311
  4. Completed repair with Belzona 1341 and Belzona 5811
 
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