Patent ID: 9029730
Filing Date: 2015-05-12
Classification: B23K,C21D

Abstract:
1. A laser peening apparatus, comprising: a liquid holding head including: a laser irradiation head to irradiate the local surface with a laser beam through the liquid held in the liquid holding chamber; and a moving device configured so as to move the workpiece in a direction toward the liquid holding head so as to press the local surface of the workpiece against the liquid holding head and configured to move the workpiece in a direction orthogonal to the direction toward the liquid holding head, wherein the liquid is adapted for trapping a plasma generated by the laser irradiation, wherein the liquid is in a sealed contact with a surface of the workpiece around the local surface, wherein the liquid holding head is configured such that the liquid flowingly contacts the surface of the workpiece around the local surface, and wherein the liquid holding head is configured such that, if the workpiece is moved in the direction orthogonal to the direction toward the liquid holding head, the liquid holding head holds the liquid in a constant shape.