The Critical Role of Metallic Shot in Achieving Consistent Shot Peening Results

Author:  Kumar Balan
Source:  The Shot Peener magazine, Vol 31, Issue 4, Fall 2017
Doc ID:  2017141
Year of Publication:  2017
Abstract:  
Introduction: The quality of metallic shot plays a critical role in the accuracy and repeatability of shot peening results. Energy transmitted from the shot to the component determines the residual compressive stress, and the fatigue life developed in the component. The two key measures of the value and quality of metallic shot are: Durability (life) and Transmitted Energy (Impact Energy). The other characteristics such as size, hardness, microstructure, and physical defects including cracks, shrinkage, voids, and chemical analysis, also have a bearing on the effectiveness with which the energy is transmitted.