Powder velocity-based nozzle design for directed energy deposition

Keisuke Takemura; Ryo Koike; Yasuhiro Kakinuma; Keiichi Yamazaki; Takanori Mori; Yoko Hirono

Powder velocity-based nozzle design for directed energy deposition

Keisuke Takemura, Ryo Koike, Yasuhiro Kakinuma, Keiichi Yamazaki, Takanori Mori, Yoko Hirono

Department of System Design Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

Directed energy deposition (DED), which is one of the metal-powder additive manufacturing processes, is a promising method suitable for repairing. Because the carrier gas that transports the metal powder and the shield gas that protects the optical system are supplied in DED, it is difficult to estimate the transport of metal powder due to the complex turbulence around the processing point, resulting the powder supply efficiency gets lowered. This study computationally analyzed the fluid dynamics of two types of DED nozzles for improving the powder supply efficiency by changing the number of powder channels, working distance and channel diameter.

Original language	English
Pages	458-461
Number of pages	4
Publication status	Published - 2021
Event	10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 2021 - Virtual, Online Duration: 2021 Nov 14 → 2021 Nov 18

Conference

Conference	10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 2021
City	Virtual, Online
Period	21/11/14 → 21/11/18

Keywords

Additive manufacturing
Computational fluid dynamics
DED
Solid-gas multiphase flow

ASJC Scopus subject areas

Artificial Intelligence
Industrial and Manufacturing Engineering
Electronic, Optical and Magnetic Materials

Cite this

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title = "Powder velocity-based nozzle design for directed energy deposition",

abstract = "Directed energy deposition (DED), which is one of the metal-powder additive manufacturing processes, is a promising method suitable for repairing. Because the carrier gas that transports the metal powder and the shield gas that protects the optical system are supplied in DED, it is difficult to estimate the transport of metal powder due to the complex turbulence around the processing point, resulting the powder supply efficiency gets lowered. This study computationally analyzed the fluid dynamics of two types of DED nozzles for improving the powder supply efficiency by changing the number of powder channels, working distance and channel diameter.",

keywords = "Additive manufacturing, Computational fluid dynamics, DED, Solid-gas multiphase flow",

author = "Keisuke Takemura and Ryo Koike and Yasuhiro Kakinuma and Keiichi Yamazaki and Takanori Mori and Yoko Hirono",

note = "Publisher Copyright: {\textcopyright} 2021 The Japan Society of Mechanical Engineers.; 10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 2021 ; Conference date: 14-11-2021 Through 18-11-2021",

year = "2021",

language = "English",

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TY - CONF

T1 - Powder velocity-based nozzle design for directed energy deposition

AU - Takemura, Keisuke

AU - Koike, Ryo

AU - Kakinuma, Yasuhiro

AU - Yamazaki, Keiichi

AU - Mori, Takanori

AU - Hirono, Yoko

PY - 2021

Y1 - 2021

N2 - Directed energy deposition (DED), which is one of the metal-powder additive manufacturing processes, is a promising method suitable for repairing. Because the carrier gas that transports the metal powder and the shield gas that protects the optical system are supplied in DED, it is difficult to estimate the transport of metal powder due to the complex turbulence around the processing point, resulting the powder supply efficiency gets lowered. This study computationally analyzed the fluid dynamics of two types of DED nozzles for improving the powder supply efficiency by changing the number of powder channels, working distance and channel diameter.

AB - Directed energy deposition (DED), which is one of the metal-powder additive manufacturing processes, is a promising method suitable for repairing. Because the carrier gas that transports the metal powder and the shield gas that protects the optical system are supplied in DED, it is difficult to estimate the transport of metal powder due to the complex turbulence around the processing point, resulting the powder supply efficiency gets lowered. This study computationally analyzed the fluid dynamics of two types of DED nozzles for improving the powder supply efficiency by changing the number of powder channels, working distance and channel diameter.

KW - Additive manufacturing

KW - Computational fluid dynamics

KW - DED

KW - Solid-gas multiphase flow

UR - http://www.scopus.com/inward/record.url?scp=85124791927&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85124791927&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85124791927

SP - 458

EP - 461

T2 - 10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 2021

Y2 - 14 November 2021 through 18 November 2021

ER -

Powder velocity-based nozzle design for directed energy deposition

Abstract

Conference

Keywords

ASJC Scopus subject areas

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