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Proceedings Paper

Material removal during double-pulsed (ms and ns) laser drilling
Author(s): Zicheng Wang; Yuan Qin; Sen Yang; Bang Shi; Heming Wang; Hanyu Chen
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Paper Abstract

Laser drilling is one of the processing approaches in aerospace industry. However, drilling with ms laser is unstable since the drilled hole is easy to be blocked by re-solidified molten material. To solve this problem, two different pulsed lasers (millisecond and nanosecond) are used in our experiments. The shock wave produced by the ns laser is introduced to increase the migration mass. With the help of shock wave, the depth and quality of the hole get higher. The influences of the interval time, the ms laser energy and the laser pulse duration time on the quality of drilled holes are also discussed. The results show that the hole is deep and clean if the ns laser is added shortly after the beginning of ms laser. The ms laser energy and the laser duration time determine the depth of the hole.

Paper Details

Date Published: 12 May 2017
PDF: 6 pages
Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 1017324 (12 May 2017); doi: 10.1117/12.2268314
Show Author Affiliations
Zicheng Wang, Nanjing Univ. of Science and Technology (China)
Yuan Qin, Nanjing Univ. of Science and Technology (China)
Sen Yang, Nanjing Univ. of Science and Technology (China)
Bang Shi, Nanjing Univ. of Science and Technology (China)
Heming Wang, Nanjing Univ. of Science and Technology (China)
Hanyu Chen, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10173:
Fourth International Symposium on Laser Interaction with Matter
Yongkun Ding; Guobin Feng; Dieter H. H. Hoffmann; Jianlin Cao; Yongfeng Lu, Editor(s)

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