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Belzona® Standard Protection Of Screw Conveyor For Soap Production



General Industry (GIND)



Solids Handling Machinery (SHM)


Customer Location:

Soap and Detergent Producer, Bulgaria


Application Date:

September, 2008


Application Situation:

Silumin worms (screw conveyors) for soap production facility. These are used for extruding soap and referred to as a "plodder".



Erosion/corrosion causes pitting damage on screw conveyor surface accentuated by the high working temperatures (more than 60°C), high pressure injection and corrosive chemical process media.



Belzona® 1111 (Super Metal)

Belzona® 1392 (Ceramic HT2)



Silumin (High strength Aluminum alloy with Silicon)


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflet SHM-14. Surface preparation was made in accordance with the Colgate-Palmolive procedure in Belzona approvals (Refurbishing and Coating Silumin Worms for Soap Plodders).


Belzona Facts:

Two screw conveyors with OD 250 mm and 300 mm were protected with a third to be completed. Inspection review twomonths after application revealed only slight discolouring and loss of gloss. Belzona is routinely specified by this International soap producer for protection of these screws. 


Photographs Description

  1. Surface damages repaired with Belzona® 1111
  2. First coat of Belzona® 1392 (red) completed
  3. Second coat of Belzona® 1392 (grey) completed
  4. Inspection of screw after two months in working conditions
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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