Laser-impact hardening treatment method and apparatus



PROBLEM TO BE SOLVED: To provide a laser-impact hardening treatment method by which laser beams can stably be emitted without causing splashing of the liquid and waving of the liquid surface due to the emission of the laser beams. SOLUTION: A transparent solid 24 to the wave length of the laser beam, as an entrance window onto the liquid surface, is set and the liquid 22 is interposed in the optical path of the laser beam 51 between the solid 24 and the surface of a member 41 to be treated and the laser beams 51 are emitted through the solid 24 and thus, the impact hardening treatment is applied to the surface of the member 41 to be treated by being emitted on the surface of the member 41 through the liquid 22. COPYRIGHT: (C)2006,JPO&NCIPI
【課題】 レーザ照射による液体の跳ね上がりや液体表面の波立ちをなくして、レーザビームを安定して照射できるレーザ衝撃硬化処理方法を提供する。 【解決手段】 液体表面への入射窓となるレーザの波長に対して透明な固体24を設置し、この固体24と被処理部材41の表面との間のレーザビーム51の光路に液体22を介在させ、レーザビーム51を固体24を通して入射させて、液体22を介して被処理部材41の表面に照射することによって被処理部材41の表面を衝撃硬化処理する。 【選択図】 図1




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