High-quality percussion drilling with ultrashort laser pulses

被引：0
|
作者：
A. Feuer
R. Weber
R. Feuer
D. Brinkmeier
T. Graf
机构：
[1] University of Stuttgart,Institut für Strahlwerkzeuge (IFSW)
来源：
Applied Physics A | 2021年 / 127卷
关键词：
Laser materials processing; Laser micro-drilling; Drilling model; Percussion drilling; Hole quality; Edge quality;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The influence of the laser fluence on the quality of percussion-drilled holes was investigated both experimentally and by an analytical model. The study reveals that the edge quality of the drilled microholes depends on the laser fluence reaching the rear exit of the hole and changes with the number of pulses applied after breakthrough. The minimum fluence that must reach the hole’s exit in order to obtain high-quality microholes in stainless steel was experimentally found to be 2.8 times the ablation threshold.
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