KHIA headerKnow-How in Action

VOL XXIII, NO 66

Injection Of Belzona® Repairs Shaft

 
 

Industry:

Power (POWR)

 
 

Application:

Mechanical Power Transmission (MPT)

 
 

Customer Location:

Hydropower Station, Spain

 
 

Application Date:

February 2008

 
 

Application Situation:

2.9 M diameter Butterfly Valve which controls the inlet water to the turbine.

 
 

Problem:

After more than 30 years working, the shaft had severe damage and loss of diameter causing water leaks

 
 

Products:

Belzona® 1321 (Ceramic S Metal)
 

Substrate:

Cast Iron

 
 

Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflet MPT-2.

 
 

Belzona Facts:

Replacement of the shaft would have needed a large part of the installation to be disassembled. With Belzona the customer saved these high costs and has restored shaft with improved corrosion resistance. Use of former enabled shaft to be accurately reformed in-situ.

 
 

Photographs Description

  1. Original shaft damage
  2. Heating the shaft with the former already installed
  3. Injecting Belzona between the shaft and the former
  4. Shaft rebuilt and protected at the same time
 
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