normal wear at a PCCB (997 Turbo)
the embedded carbon fibres in the wear layer are burnt out and the remaining muldings can be seen
rusty, broken and lost fixing elements
because of thermal load, rust and mechanical stress the bolts will pull off. the result is the hub cannot distribute the torque in a constant way anymore.
during our regeneration process we renew the fixing elements and cleaning up the floaters.
delamination at a Audi CCB 2. generation
this is caused by a bad compound between base layer and wear layer. finally segments from the wear layer falling out of the surface. such kind of damages are very hard to repair and this will work just for smaller chips. damages like at the picture can be seen will be the limit.
delamination at a PCCB 3. generation
caused by a bad compound between base layer and wear layer which leads to surface break-out
cracks at the insert holes for the floaters
caused by corroded floaters which leads to torque overrun who cracks the disc at this place