Problem Guide
The right coating starts with the right diagnosis. Select the damage you see on your part to understand its cause, symptoms and which process is right in which case. Not sure? Send a photo and we will look at it together.
Select Your Problem
Abrasion
Sand, minerals, ash: the surface wears like sandpaper, flights get shorter.
02Erosion
Particle or slurry flow: thinning tubes, profile loss on fans and pumps.
03Cavitation
Spongy pits, noise and efficiency loss on impellers and turbines.
04Corrosion
Surfaces attacked by chemicals and moisture together with wear.
05High Temperature
Chlorine, sulphur and ash corrosion and oxidation in boilers and furnaces.
06Dimensional Loss
Shafts with loose bearing seats or grooved seal areas.
07Galling / Adhesive
Tearing and seizure on piston rods, valve balls and sliding surfaces.
08Impact + Wear
Crusher hammers, shredder blades: cracking, spalling hardfacing.
What Does the Symptom Tell You?
Several mechanisms often act together. This table is a first pointer; for a firm diagnosis we need to see the part.
| What you see | Likely mechanism | Details |
|---|---|---|
| Scratches in flow direction, shiny surface, shorter flights | Abrasion | View → |
| Wavy / horseshoe pits, flat spots on tubes | Erosion | View → |
| Spongy, rough pits; noise and vibration | Cavitation | View → |
| Rust, pitting, blistering layer | Corrosion | View → |
| Thick, spalling oxide/ash layer, tube failures | High-temperature corrosion | View → |
| Bearing spinning, seal leaking, runout increased | Dimensional loss / fretting | View → |
| Tearing, smeared metal, seizure | Adhesive wear / galling | View → |
| Chipped edges, cracks and spalling in the overlay | Impact wear | View → |
Wrong Mechanism, Short Life
Applying a very hard but brittle coating to a part under impact, trying to fix cavitation only with a coating, or ignoring the cause of dimensional loss wastes money and downtime. On every job we first assess the damage mechanism, base material and final dimensional requirements together.
Cannot Identify the Damage?
Send a photo or call us; let us identify the mechanism together. On the phone we clarify the process recommendation and the next step in the same call.
- Close-up and overall photo of the damaged area
- Diameter / length or a technical drawing
- Operating conditions: temperature, medium, particles, speed