Shot peening is a cold working process used to produce a compressive residual stress layer and modify mechanical properties of metals. It entails impacting a surface with shot (round metallic, glass, or ceramic particles) with force sufficient to create plastic deformation.
It is similar to sandblasting, except that it operates by the mechanism of plasticity rather than abrasion: each particle functions as a ball-peen hammer. In practice, this means that less material is removed by the process, and less dust created.
Other articles related to "shot peening, peening":
... surface of the concave portion of leaf springs the peening effectively offset the maximum tensile stresses, also located on the surface, when the compressive stresses were ... Shot peening was independently invented in Germany and the United States in the late 1920s and early 1930s ... As a further development of the shot peening Laserpeening and High Frequency Impact Treatment process were developed ...
Famous quotes containing the word shot:
“When they shot him down in the highway,
Down like a dog in the highway,
And he lay in his blood on the highway, with the bunch of lace at
—Alfred Noyes (18801958)