Table 1: Advantages (+) and disadvantages () of the two different coating systems
Soft polymer coating Softurb 80 |
Hard thermal spray coating Diaturb 532 |
+ low investment for equipment |
high investment for equipment |
+ low material costs |
high material costs |
+ good cavitation resistance |
modest cavitation resistance |
+ good repairability (even in-situ) |
difficult to repair |
high manual skills required |
high robot programming effort |
modest layer tolerances |
+ tight layer tolerances |
modest material strength |
+ high material strength |
modest bond strength |
+ high bond strength |
sensitive against large stones |
sensitive against deformation |