KHIA headerKnow-How in Action

VOL XVI, NO 24

Belzona® Repairs Cross Threaded Fittings Without Machining

 
 

Industry:

Pulp & Paper (PLPR)

 
 

Application:

Engines and Casings (ENC)

 
 

Customer Location:

Austrian paper mill

 
 

Application Date:

April 1992

 
 

Application Situation:

Steel venturi eductor nozzles.

 
 

Problem:

Operator error in cross threading the inlet fittings in the casing of two steel venturi eductor nozzles damaged the units and were unable to func-tion properly.

 
 

Products:

Belzona® 1111 (Super Metal)

 

Substrate:

Steel

 
 

Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet ENC-2.

 
 

Belzona Facts:

Belzona® 9411 (Release Agent) was applied to the male threaded fitting and allowed to dry for at least 20 minutes. Belzona® 1111 (Super Metal) was then applied to the threads of both the male and female components and brought together immediately. Following full cure, the fittings were removed to reveal perfectly reformed threads without machining.

 
 

Photographs Description

  1. View of damaged venturi casing
  2. View of eductor nozzles during forming process
  3. Completely reformed threads
 
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