Fine Particle Peening: Review and Challenges
Author: Kumar Balan
Source: The Shot Peener magazine, Vol 34, Issue 2, Spring 2020
Doc ID: 2020014
Year of Publication: 2020
Abstract:
Why Are We Discussing Fine Particles?
Automotive and Aerospace, the two common users of
shot peening equipment, seldom refer to anything smaller
than S110, or the equivalent in CW peening media. S110
is approximately 0.011" (0.28 mm) in nominal diameter.
Smaller particle sizes are commonly used in thermal spray
techniques. However, that is not always true. For instance,
Japanese automakers have media that is smaller than the
smallest SAE/AMS size of S70 for their peening operations. In
“Fine Particle Shot Peening†(The Shot Peener, Winter 2010),
Kathy Levy introduced us to this technique and also informed
us of its history with our Japanese colleagues who continue
to realize distinct advantages in terms of fatigue resistance
among other attributes with its use. Kathy identifies the
limited availability of this media in US and EU as one of its
drawbacks but also contends that this is easily solvable.
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