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

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 conference › Paper › peer-review

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 language	English
Publication status	Published - Dec 1 2009
Event	5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009 - Osaka, Japan Duration: Dec 2 2009 → Dec 4 2009

Other

Other	5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009
Country	Japan
City	Osaka
Period	12/2/09 → 12/4/09

Keywords

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

ASJC Scopus subject areas

Industrial and Manufacturing Engineering

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

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.",

keywords = "Dross, Fine-cutting, High-speed observation, Nozzle, Pulsed Nd: YAG laser",

author = "Hiroshi Suzuki and Yasuhiro Okamoto and Yoshiyuki Uno",

year = "2009",

month = dec,

day = "1",

language = "English",

note = "5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009 ; Conference date: 02-12-2009 Through 04-12-2009",

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TY - CONF

T1 - Effect of nozzle shape on dross generation in fine cutting of thin metal plate by pulsed Nd

T2 - 5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009

AU - Suzuki, Hiroshi

AU - Okamoto, Yasuhiro

AU - Uno, Yoshiyuki

PY - 2009/12/1

Y1 - 2009/12/1

N2 - 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.

AB - 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.

KW - Dross

KW - Fine-cutting

KW - High-speed observation

KW - Nozzle

KW - Pulsed Nd: YAG laser

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AN - SCOPUS:84883431249

Y2 - 2 December 2009 through 4 December 2009

ER -