Rebuild of Propeller Blades
Main propeller has been detected with cavitation for all 4 blades
Refurbishment of Propeller Blades
Location
Istanbul, TR
Job and report done by
Esko Marine and BTMteknik
Wencon products used
Wencon Ceramic Cream, Cleaner, appl. tools.
Main propeller experienced cavitation
The main propeller is a key component responsible for the propulsion of the vessel, driving it through water. Over time, cavitation can cause significant wear and tear, as was the case here where all four blades showed signs of damage.
The surface was prepared using water jetting to remove all salt and contaminants from the metal, ensuring an optimal surface for the application of Wencon epoxy.
The Wencon application process
Cavitation on four blades
Main propeller has been detected with cavitation for all 4 blades. The surface is prepared using UHP water jetting to remove all salt and uncleanness’s out if the metal surface.
Measuring salt content
Measured salt content of the liquid before injection of the liquid into the patch
Best conditions for adhesion
Due to the extent of cavitation and damage to the propeller blades, the surface is already rough and suitable for applying Wencon Ceramic Cream. Grit Blasting seems therefore superfluous, and degreasing using Wencon cleaner will achieve the best conditions for proper adhesion.
Visible cavitation is seen
Cavitation damage on the propeller Blades.
1st layer of Wencon Ceramic Cream
To optimize adhesion, the 1st layer Wencon ceramic cream are “worked toughly” into all pores and unevenness of the cavitated areas.
Rebuilding surface
2nd and final layer of Wencon ceramic cream applied in layer thick enough to ensure level above to original surface has been obtained.
The original shape and size of the blades recovered
Subsequent to final curing has occurred, the original shape and size of the Propeller Blades is recovered by using grinding tools and ordinary polish tools as normally used to polish the Propeller Blades.
