Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: The Little Book on Shot Peening
Author: Jack Champaigne
Source: Electronics Inc, The Shot Peener
Publication year 2001
Document number: 2001014
Number of pages: 6
Abstract:
Shot peening is a special metal surface treatment intended to extend the fatigue life of most
metals. The impact of small spherical media called shot creates a dent in the surface that is very beneficial
in preventing formation of fatigue cracks. The area below each dent called the plastic zone, typically only
.020 inch deep, is highly compressed and this action tends to keep cracks from opening in the surface.
Valve springs, suspension springs, leaf springs, torsion bars, gears and connecting rods are all treated
with shot peening to extend their service life. This book will explain the
essential elements necessary to properly apply shot peening. The most
important thing to remember is “We make dents”. They must be applied in
the correct area of the part (location), they must be the right size and there
must be enough to entirely cover the surface and it must be done with the
proper size and hardness of shot.
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This page last revised: 04/24/2008