Testing Media Durability Using Airblast

Author:  Kumar Balan | Blast Cleaning and Shot Peening Specialist
Source:  The Shot Peener magazine, Vol 33, Issue 1, Winter 2019
Doc ID:  2019006
Year of Publication:  2019
Abstract:  
Introduction In the Fall 2017 issue of The Shot Peener, we discussed a similar topic, “The Critical Role of Metallic Shot in Achieving Consistent Shot Peening Results.” Our focus then was to determine the durability and transmitted energy of blast media using the Ervin Test Machine. I used J445 as the guideline, specifically the procedure as described under 5.3: “100% Replacement Method.” The topic involved using a centrifugal blast wheel type system to test durability and characterize critical media properties. Although a valid and time-tested procedure, it is limited to metallic media only.