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January 3 - February 7, 2020

How do you determine if steel shot or grit for centrifugal/wheel blasting need to be replaced?

Selected Answers

From martin jayaraj of Matrix Coating Resources Sdn Bhd on February 13, 2020:
Simple, you can notice on the control panel the amps will fluctuate on the individual blast wheel motors, indicating you need to add new shot or grit.

Replace if we are not getting sufficient anchor profile on the blasted surface and the surface is covered with sticky,  fine particles of steel shots or grit.

From Bryce Washburn of Frank's Sandblasting and paint on February 11, 2020:
If you're not getting sufficient blast profile,  your media is worn down too much.

From Chris Lucy of chemquest technology institute on February 11, 2020:
I look for deformation and fractured shot in samples under a 200x microscope. Periodic scanning with the microscope on blasted surfaces will start to reveal fractured shot embedded in the surface of the finished part once the shot starts to break down.

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Tagged categories: Asia Pacific; Centrifugal wheel blasting (shotblasting); EMEA (Europe, Middle East and Africa); Latin America; North America; Surface Preparation

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