Modelling of powders dynamics for 3D printing of metal powders deposition

Research output: Contribution to conferenceAbstract

Abstract

Application of 3D printing technologies for manufacturing metal products, are receiving ever-increasing attentions in advanced manufacturing fields e.g. aerospace, automobile and biomedical engineering. Laser metal deposition (LMD) is one of the promising 3D printing techiques suitable for depositing fully-densed critical metal components of complex geometry layer-by-layer. Based on directed energy deposition, LMD sprays metal powders into a moving molten pool generated by energy-intensive laser and consequently deposits solid tracks on the substrate surface with the movement of laser spot. Accurate numerical modelling of this 3D printing process is really a challenge due to involving in multiple physical-mechanical actions along with the mass and heat flows. This research reviews the existing 3D printing technologies using metal powders and especially focusing on the LMD process. To facilitate the numerical modelling, the 3D printing process for LMD is decomposed into several interlinked physical stages, including (1) powders convey and dynamics, (2) laser- metal powders interaction, (3) formation of molten pool due to laser irradiation with mass and heat addition; (4) solidification of molten pool and formation of solid tracks on the substrate. In this research, gas-powder flow within the internal passages of laser deposition head and powder dynamics after being ejected from the nozzles are modelled and analyzed to give a better understanding of the key physics during the LMD process. An in-depth study of the powder flow and its dynamics in LMD via numerical simulation will definitely facilitate subsequent formation mechanism of molten pool and deposited tracks. The proposed CFD model of powder convey and dynamics will finally assist in accurately simulating the whole LMD process and consequently help enhance the functionality-related performance of LMDed components.

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Powder metals
Printing
Powders
Lasers
Metals
Molten materials
Automotive engineering
Aerospace engineering
Biomedical engineering
Substrates
Laser beam effects
Solidification
Nozzles
Computational fluid dynamics
Deposits
Physics
Heat transfer

Keywords

  • 3D printing
  • powder flow
  • powder dynamics
  • metal powders

Cite this

@conference{3a5df931f85d40f9996dbaeead812d2c,
title = "Modelling of powders dynamics for 3D printing of metal powders deposition",
abstract = "Application of 3D printing technologies for manufacturing metal products, are receiving ever-increasing attentions in advanced manufacturing fields e.g. aerospace, automobile and biomedical engineering. Laser metal deposition (LMD) is one of the promising 3D printing techiques suitable for depositing fully-densed critical metal components of complex geometry layer-by-layer. Based on directed energy deposition, LMD sprays metal powders into a moving molten pool generated by energy-intensive laser and consequently deposits solid tracks on the substrate surface with the movement of laser spot. Accurate numerical modelling of this 3D printing process is really a challenge due to involving in multiple physical-mechanical actions along with the mass and heat flows. This research reviews the existing 3D printing technologies using metal powders and especially focusing on the LMD process. To facilitate the numerical modelling, the 3D printing process for LMD is decomposed into several interlinked physical stages, including (1) powders convey and dynamics, (2) laser- metal powders interaction, (3) formation of molten pool due to laser irradiation with mass and heat addition; (4) solidification of molten pool and formation of solid tracks on the substrate. In this research, gas-powder flow within the internal passages of laser deposition head and powder dynamics after being ejected from the nozzles are modelled and analyzed to give a better understanding of the key physics during the LMD process. An in-depth study of the powder flow and its dynamics in LMD via numerical simulation will definitely facilitate subsequent formation mechanism of molten pool and deposited tracks. The proposed CFD model of powder convey and dynamics will finally assist in accurately simulating the whole LMD process and consequently help enhance the functionality-related performance of LMDed components.",
keywords = "3D printing, powder flow, powder dynamics, metal powders",
author = "Quanren Zeng and Yi Qin and Yankang Tian",
year = "2018",
month = "6",
day = "6",
language = "English",
note = "Strathwide 2018 : 2nd Annual Strathclyde Research Conference ; Conference date: 06-06-2018 Through 06-06-2018",
url = "https://www.strath.ac.uk/hr/learninganddevelopment/researchstaffdevelopment/researchersgroup/strathwide2018/",

}

Zeng, Q, Qin, Y & Tian, Y 2018, 'Modelling of powders dynamics for 3D printing of metal powders deposition' Strathwide 2018, Glasgow, United Kingdom, 6/06/18 - 6/06/18, .

Modelling of powders dynamics for 3D printing of metal powders deposition. / Zeng, Quanren; Qin, Yi; Tian, Yankang.

2018. Abstract from Strathwide 2018, Glasgow, United Kingdom.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Modelling of powders dynamics for 3D printing of metal powders deposition

AU - Zeng, Quanren

AU - Qin, Yi

AU - Tian, Yankang

PY - 2018/6/6

Y1 - 2018/6/6

N2 - Application of 3D printing technologies for manufacturing metal products, are receiving ever-increasing attentions in advanced manufacturing fields e.g. aerospace, automobile and biomedical engineering. Laser metal deposition (LMD) is one of the promising 3D printing techiques suitable for depositing fully-densed critical metal components of complex geometry layer-by-layer. Based on directed energy deposition, LMD sprays metal powders into a moving molten pool generated by energy-intensive laser and consequently deposits solid tracks on the substrate surface with the movement of laser spot. Accurate numerical modelling of this 3D printing process is really a challenge due to involving in multiple physical-mechanical actions along with the mass and heat flows. This research reviews the existing 3D printing technologies using metal powders and especially focusing on the LMD process. To facilitate the numerical modelling, the 3D printing process for LMD is decomposed into several interlinked physical stages, including (1) powders convey and dynamics, (2) laser- metal powders interaction, (3) formation of molten pool due to laser irradiation with mass and heat addition; (4) solidification of molten pool and formation of solid tracks on the substrate. In this research, gas-powder flow within the internal passages of laser deposition head and powder dynamics after being ejected from the nozzles are modelled and analyzed to give a better understanding of the key physics during the LMD process. An in-depth study of the powder flow and its dynamics in LMD via numerical simulation will definitely facilitate subsequent formation mechanism of molten pool and deposited tracks. The proposed CFD model of powder convey and dynamics will finally assist in accurately simulating the whole LMD process and consequently help enhance the functionality-related performance of LMDed components.

AB - Application of 3D printing technologies for manufacturing metal products, are receiving ever-increasing attentions in advanced manufacturing fields e.g. aerospace, automobile and biomedical engineering. Laser metal deposition (LMD) is one of the promising 3D printing techiques suitable for depositing fully-densed critical metal components of complex geometry layer-by-layer. Based on directed energy deposition, LMD sprays metal powders into a moving molten pool generated by energy-intensive laser and consequently deposits solid tracks on the substrate surface with the movement of laser spot. Accurate numerical modelling of this 3D printing process is really a challenge due to involving in multiple physical-mechanical actions along with the mass and heat flows. This research reviews the existing 3D printing technologies using metal powders and especially focusing on the LMD process. To facilitate the numerical modelling, the 3D printing process for LMD is decomposed into several interlinked physical stages, including (1) powders convey and dynamics, (2) laser- metal powders interaction, (3) formation of molten pool due to laser irradiation with mass and heat addition; (4) solidification of molten pool and formation of solid tracks on the substrate. In this research, gas-powder flow within the internal passages of laser deposition head and powder dynamics after being ejected from the nozzles are modelled and analyzed to give a better understanding of the key physics during the LMD process. An in-depth study of the powder flow and its dynamics in LMD via numerical simulation will definitely facilitate subsequent formation mechanism of molten pool and deposited tracks. The proposed CFD model of powder convey and dynamics will finally assist in accurately simulating the whole LMD process and consequently help enhance the functionality-related performance of LMDed components.

KW - 3D printing

KW - powder flow

KW - powder dynamics

KW - metal powders

UR - https://www.strath.ac.uk/hr/learninganddevelopment/researchstaffdevelopment/researchersgroup/strathwide2018/

M3 - Abstract

ER -

Zeng Q, Qin Y, Tian Y. Modelling of powders dynamics for 3D printing of metal powders deposition. 2018. Abstract from Strathwide 2018, Glasgow, United Kingdom.