Back to Basics: Energy Controls Shot Peening Efficiency
Author: Dr. David Kirk | Coventry University U.K.
Source: The Shot Peener magazine, Vol 36, Issue 4, Fall 2022
Doc ID: 2022038
Year of Publication: 2022
Abstract:
INTRODUCTION
Energy is arguably the most important factor in shot peening.
Without energy there would be no shot peening. It follows
that energy has to be controlled in order to maximize shot
peening efficiency. Energy is the capacity for doing work.
The law of conservation of energy states that “Energy can be
converted in form, but not created or destroyed.”
Air-blast shot peening relies upon potential energy
stored in compressors. Compressed air provides the means
for accelerating shot particles. Wheel-blast peening allows
shot particles to be accelerated dynamically via rotating
blades.
Energy is essentially quantitative and therefore has
corresponding units depending upon whether we are
considering potential or dynamic energy. This article starts
with a consideration of energy units and continues with
considering the role of energy in various aspects of shot
peening. Minimizing the required energy input maximizes
shot peening efficiency.
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