Laser shock hardening apparatus
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United States of America Patent
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Oct 28, 2014
Issued Date -
N/A
app pub date -
Nov 14, 2012
filing date -
May 11, 2006
priority date (Note) -
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Abstract
An improved laser shock hardening method and apparatus which can eliminate spattering of a liquid and waving of the liquid surface upon laser irradiation, and can stably irradiate a workpiece with a laser beam. In a laser shock hardening method for carrying out surface processing of a workpiece in contact with a liquid by irradiating through the liquid the surface of the workpiece with a pulsed laser beam intermittently emitted from a laser irradiation device, the disclosed method provides a solid transparent to the wavelength of the laser, serving as an entrance window to the liquid surface; allowing the liquid to be present in the light path of the laser beam between the solid and the surface of the workpiece; and allowing the laser beam to enter through the solid and irradiating through the liquid the surface of the workpiece with the laser beam.
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