KHIA headerKnow-How in Action


Belzona® Refurbishment Of Fan Hub Saves Time And Money



Buildings & Structures (BSTR)



Centrifugal Pumps (CEP)


Customer Location:

Power Plant, Turkey


Application Date:

December 2010


Application Situation:

Cooling Tower Fan Blade case, diameter 1854mm, width 537mm



Erosion/Corrosion following failure of previous coating. If allowed to continue could cause severe damage to the fan.



Belzona® 1111 (Super Metal)

Belzona® 1391(Ceramic HT)





Application Method:

application was carried out in accordance with Belzona Know-How System Leaflets FBC-4 & FBC-2. Formers were used to achieve correct profile for blade sockets.


Belzona Facts:

Belzona restored the eroded surfaces. Alternative method by welding might cause distortion and its machining process is laborius and expensive, besides thermal stress could have a negative effect on balance as fan operates at 750rpm. Belzona solution is corrosion resistant, straight forward, time and cost effective. It saved time and avoided start-up delay.


Photographs Description

  1. Badly corroded case especially bottom side of fan blades
  2. Wire mesh and formers cut by CNC used to achieve correct profiles
  3. Application of Belzona® 1111 to case with templates in place to form fan pockets
  4. Finished application. Rebuild and protective coating applied. Checking each hole by installing fan blade
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


For more information about Belzona visit: