Abstract
Fiber laser has many advantages such as compact size, high conversion efficiency, good beam mode, air cooling and maintenance free. Therefore, it has high possibility as an industrial light source in the near future. The beam from fiber laser can be focused in a micro spot because of its excellent beam quality. However, the narrow kerf leads to the difficulty of outflow of melted mate-rial. Therefore, micro cutting by a single-mode fiber laser is considerably difficult, then the high performance nozzles are strongly required. In the previous work, authors developed a high perform-ance nozzle, which can increase the velocity of assist gas flow and makes it possible to reduce the dross in the micro kerf. Therefore, high performance cutting by a single-mode fiber laser can be ex-pected by using our newly designed nozzle. In this study, the effect of nozzle shape on the machin-ing results in precision cutting of thin copper plate by a Q-switched single-mode fiber laser was ex-perimentally investigated. It was found that the high speed cutting at 30mm/s could be carried out by the high performance nozzle under low pulse frequency condition. Besides, the reduction of the dross and good kerf shape could be attained in the case of nitrogen assist gas.
| Original language | English |
|---|---|
| Pages (from-to) | 243-246 |
| Number of pages | 4 |
| Journal | Journal of Laser Micro Nanoengineering |
| Volume | 1 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Dec 1 2006 |
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Keywords
- High-performance nozzle
- Q-switched single-mode fiber laser
- Thin copper plate
ASJC Scopus subject areas
- Instrumentation
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering
Cite this
Micro cutting of thin copper plate by fiber laser with laval nozzle. / Okamoto, Yasuhiro; Kataoka, Norio; Tahara, Hirokazu; Shiwayama, Ken; Uno, Yoshiyuki.
In: Journal of Laser Micro Nanoengineering, Vol. 1, No. 3, 01.12.2006, p. 243-246.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Micro cutting of thin copper plate by fiber laser with laval nozzle
AU - Okamoto, Yasuhiro
AU - Kataoka, Norio
AU - Tahara, Hirokazu
AU - Shiwayama, Ken
AU - Uno, Yoshiyuki
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Fiber laser has many advantages such as compact size, high conversion efficiency, good beam mode, air cooling and maintenance free. Therefore, it has high possibility as an industrial light source in the near future. The beam from fiber laser can be focused in a micro spot because of its excellent beam quality. However, the narrow kerf leads to the difficulty of outflow of melted mate-rial. Therefore, micro cutting by a single-mode fiber laser is considerably difficult, then the high performance nozzles are strongly required. In the previous work, authors developed a high perform-ance nozzle, which can increase the velocity of assist gas flow and makes it possible to reduce the dross in the micro kerf. Therefore, high performance cutting by a single-mode fiber laser can be ex-pected by using our newly designed nozzle. In this study, the effect of nozzle shape on the machin-ing results in precision cutting of thin copper plate by a Q-switched single-mode fiber laser was ex-perimentally investigated. It was found that the high speed cutting at 30mm/s could be carried out by the high performance nozzle under low pulse frequency condition. Besides, the reduction of the dross and good kerf shape could be attained in the case of nitrogen assist gas.
AB - Fiber laser has many advantages such as compact size, high conversion efficiency, good beam mode, air cooling and maintenance free. Therefore, it has high possibility as an industrial light source in the near future. The beam from fiber laser can be focused in a micro spot because of its excellent beam quality. However, the narrow kerf leads to the difficulty of outflow of melted mate-rial. Therefore, micro cutting by a single-mode fiber laser is considerably difficult, then the high performance nozzles are strongly required. In the previous work, authors developed a high perform-ance nozzle, which can increase the velocity of assist gas flow and makes it possible to reduce the dross in the micro kerf. Therefore, high performance cutting by a single-mode fiber laser can be ex-pected by using our newly designed nozzle. In this study, the effect of nozzle shape on the machin-ing results in precision cutting of thin copper plate by a Q-switched single-mode fiber laser was ex-perimentally investigated. It was found that the high speed cutting at 30mm/s could be carried out by the high performance nozzle under low pulse frequency condition. Besides, the reduction of the dross and good kerf shape could be attained in the case of nitrogen assist gas.
KW - High-performance nozzle
KW - Q-switched single-mode fiber laser
KW - Thin copper plate
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UR - http://www.scopus.com/inward/citedby.url?scp=84907338722&partnerID=8YFLogxK
U2 - 10.2961/jlmn.2006.03.0018
DO - 10.2961/jlmn.2006.03.0018
M3 - Article
VL - 1
SP - 243
EP - 246
JO - Journal of Laser Micro Nanoengineering
JF - Journal of Laser Micro Nanoengineering
SN - 1880-0688
IS - 3
ER -