KHIA headerKnow-How in Action

VOL XXXII, NO 44

Belzona® Helps Fire Pump Perform Again

 
 

Industry:

Marine (MRNE)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Portland, OR

 
 

Application Date:

December 2016

 
 

Application Situation:

Bronze Fire pump impeller on a US Navy Ship

 
 

Problem:

Impeller had suffered heavy cavitation and erosion due to contact with salt water.

 
 

Products:

Belzona 1111 (Super Metal)

Belzona 1131 (Bearing Metal)

Belzona 1341 (Supermetalglide)

 

Substrate:

Bronze

 
 

Application Method:

The application was carried out in accordance with a modified version of Belzona System Leaflet CEP-3. Cavitated and eroded areas were rebuilt with Belzona 1111. The impeller was then coated with two coats of Belzona 1341 by brush; grey base coat, followed by a blue top coat. Critical wear ring area was rebuilt with Belzona 1131.

 
 

Belzona Facts:

Not only is this impeller ready for service again, it will perform better than ever with Belzona 1341 providing a performance increase by improving the efficiency of the pump. The pump impeller is also protected from the damaging nature of seawater. Belzona 1131 provides a self lubricating surface on the wear ring area.

 
 

Photographs Description

1. Bronze pump impeller grit blasted and showing damage.

2. Eroded areas rebuilt with Belzona 1111

3. Impeller coated with Belzona 1341

4. Belzona 1131 applied to wear ring area

 
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