Grit Blasting Parameters
05-31-2015, 12:10 PM
|Grit Blasting Parameters
Since surface preparation is critical for adhesion mechanism between TS coating and its substrate and most grit blasting operations are carried out with little parameters controlling, I decide to ask the question about grit blasting recommended parameters.
What about parameters such as pressure,angle,nozzle,distance; I'm trying to make the surface-nozzle angle perpendicular (as possible) but slight less 90deg. in order to reduce surface contaminations.
I use Al2O3 brown media blasted by NICOLIS160 machine with separation system.
B4C nozzle type with venturi shape.
Stand-off is approx. 6" and pressure 20-35psi.
I'm trying to understand if some requirements of recommendations exist for [u]nozzle traverse speed and surface speed such in TS.[/u]
The second question is after how many BLASTING hours to change the media?
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