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In
the Metal Improvement Company laser peening process,
technicians fire the laser at the surface of a
metal part to generate pressure pulses of one
million pounds per square inch, which send shock
waves through the part. Multiple firings of the
laser in a pre-defined surface pattern will impart
a layer of residual compressive stress on the
surface that is four times deeper than that attainable
from conventional peening treatments. Deeper levels
of compressive stress provide greater resistance
to fatigue and corrosion failure. |
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The
primary benefit of laser peening is a deep compressive
layer with minimal cold working, which increases the
component’s resistance to failure mechanisms such
as fatigue, fretting fatigue and stress corrosion. A
secondary benefit is that thermal relaxation of the
residual stresses of a laser peened surface is less
than a shot peened surface due to the reduced cold work
that is involved with the laser peening process.
Click
image to enlarge |
Metal
Improvement Company developed the laser peening process
in conjunction with the Lawrence Livermore National
Laboratory. Our laser peening process uses a unique
Nd:glass, high output, high repetition laser in conjunction
with precision robotic manipulation of the part to be
laser peened.
 Metal
Improvement Company operates laser peening facilities
in the United States and United Kingdom. For large stationary
parts, our mobile laser peening system allows application
of this technology on site. The laser generation system
can be located several hundred feet from the part we
are laser peening.
To
download data sheets, technical information and article
reprints about MIC Laser Peening services, click here!
To
locate the Laser Peening Facility nearest you, click
here.
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