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Metal 3D printing by powder bed fusion applying artificial gravity control

Research Project

Project/Area Number 19K14861
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 18020:Manufacturing and production engineering-related
Research InstitutionKeio University

Principal Investigator

KOIKE RYO  慶應義塾大学, 理工学部(矢上), 講師 (70781417)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords粉末床溶融結合 / レーザ / 高重力場 / 相似則 / 遠心機 / 粉末床溶融結合法 / 高重力 / 3Dプリンタ / 重力 / 付加加工 / 重力制御 / レーザー
Outline of Research at the Start

金属材料に対応可能な3Dプリンタの一方式である粉末床溶融積層法(PBF)について,加工精度の向上,造形物の機械強度の向上を目指し,従来研究では注目されていない重力を制御因子とした高重力援用粉末床溶融積層法(HG-PBF)を確立する.遠心機上にPBF装置を設置し,10G程度までの人工重力を加えた環境で造型を行う.これにより内部欠陥の除去,金属組織の成長を促し,より高品質な粉末積層造形法を実現する.

Outline of Final Research Achievements

This study aims to clarify the positive effects of high gravity on powder bed fusion (PBF), one of 3D printing processes available for metals. By combining PBF unit and a centrifuge, the PBF fabrication tests were conducted up to 10G in this study. The experimental results showed that high gravitational PBF is able to reduce the residual failures by increasing the buoyancy force, suppress the spatter generation, and make the shape accuracy higher by its fine powder availability.

Academic Significance and Societal Importance of the Research Achievements

高重力場が金属の溶融・凝固プロセスや粉体ハンドリング技術に対して与える良い影響を理論的,実験的に明らかにしたことは,今後の宇宙開発などの多様なアプリケーションを考慮すると,最先端科学技術の発展にもつながる技術開発に成功したといえる.また,ものづくりにおいて,加工精度や加工品質は極めて重要な指標であり,広く応用が始まっている3Dプリンタに対して加工精度を劇的に高めることは,あらゆる製品に付加価値を与えることにつながる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2021 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Metal powder bed fusion in high gravity2021

    • Author(s)
      Koike Ryo, Sugiura Yusuke
    • Journal Title

      CIRP Annals

      Volume: 70 Issue: 1 Pages: 191-194

    • DOI

      10.1016/j.cirp.2021.03.008

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-gravitational effect on process stabilization for metal powder bed fusion2021

    • Author(s)
      Sugiura Yusuke, Koike Ryo
    • Journal Title

      Additive Manufacturing

      Volume: 46 Pages: 102153-102153

    • DOI

      10.1016/j.addma.2021.102153

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Super-High Performance Metal Additive Manufacturing based on Analogy of Different Gravitational Fields2021

    • Author(s)
      Ryo Koike
    • Organizer
      International Symposium on Upcoming Prominent ENgineering solutions 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高重力場を応用した粉末床溶融結合法の基礎的研究2021

    • Author(s)
      尾部倖大,小池綾
    • Organizer
      2021年度精密工学会春季大会学術講演会 学生会員卒業研究発表講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高重力場を応用した粉末床溶融結合法の基礎的研究2021

    • Author(s)
      尾部倖大,小池綾
    • Organizer
      2021年度精密工学会春季大会学術講演会 学生会員卒業研究発表講演会
    • Related Report
      2020 Research-status Report
  • [Remarks] 限界を突破する「高重力場3Dプリンタ」

    • URL

      http://koikelab.sd.keio.ac.jp/main/

    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 付加製造装置,及び付加製造方法2021

    • Inventor(s)
      小池綾,杉浦悠介
    • Industrial Property Rights Holder
      小池綾,杉浦悠介
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-008877
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report 2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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