(09-20-2016, 08:36 PM)Hector Monjardin Wrote: Good day partners.
I have a cracking problem in a ceramic material 87- 13 Aluminium dioxide- Titanium dioxide plasma spray (Metco 7M system).
The parameters used are the next:
Standoff 4-5 in
GH Nozzle
Shaft B
Feed rate 110
Feed rate 30 gr/min
500 Amp
70 Volts
Flow 80 ( Ar) 100 psi pressure
Flow 20 (H2) 50 psi pressure
Using the attached photo, What canbe the reason of the cracking problem? it could be a coating overhating?
Regards
Hi,
Is the item in the photo ground ?
It seems that the cracks did appear due the grinding process.
Ion