Effect of nozzle shape on dross generation in fine cutting of thin metal plate by pulsed Nd: YAG laser

Hiroshi Suzuki, Yasuhiro Okamoto, Yoshiyuki Uno

Research output: Contribution to conferencePaper

Abstract

The nozzle shape was investigated in order to develop a high performance nozzle for pulsed Nd: YAG laser cutting, and its effect on fine cutting of thin metal plate was also discussed. In the case of 0.5mm throat diameter Laval throat nozzle with an initial expansion zone, the pressure on workpiece increased, and the straightness of gas flow was improved compared to a traditional straight throat nozzle, and the observation using high-speed video camera could reveal the behavior of removing molten metal downward. The experimental results proved that Laval throat nozzle with an initial expansion zone made it possible to reduce the dross height and the kerf width.

Original languageEnglish
Publication statusPublished - Dec 1 2009
Event5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009 - Osaka, Japan
Duration: Dec 2 2009Dec 4 2009

Other

Other5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009
CountryJapan
CityOsaka
Period12/2/0912/4/09

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Keywords

  • Dross
  • Fine-cutting
  • High-speed observation
  • Nozzle
  • Pulsed Nd: YAG laser

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Cite this

Suzuki, H., Okamoto, Y., & Uno, Y. (2009). Effect of nozzle shape on dross generation in fine cutting of thin metal plate by pulsed Nd: YAG laser. Paper presented at 5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009, Osaka, Japan.