• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

In-situ Direct Observation of Pattern Thermal Deconposition in Expendable Pattern Casting Process of Aluminum Alloy

Research Project

Project/Area Number 17K06880
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Metal making/Resorce production engineering
Research InstitutionTeikyo University

Principal Investigator

KOROYASU Sadatoshi  帝京大学, 理工学部, 教授 (70215440)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsexpendable pattern / aluminum alloy / themal decomposition / liquid resin / 消失模型鋳造法 / EPS模型 / アルミニウム合金 / 模型熱分解ガス / 液状樹脂 / 熱分解ガス層厚さ / 湯流れ
Outline of Final Research Achievements

In order to clarify the morphology of the thermal decomposition gas and liquid resin in the expendable pattern casting process (EPC process) of aluminum alloy, an observation window was provided on the side of the flask, and the EPS model was adhered to heat-resistant glass with a thickness of 3 mm. And the molten metal flow was directly observed.
As a result, during mold filling, a considerable amount of rising liquid resin due to buoyancy was observed. Therefore, in order to construct the mold filling simulation system, it was predicted that it was necessary to consider a two-phase flow with the rising of liquid resin.

Academic Significance and Societal Importance of the Research Achievements

発泡スチロール平板を厚さ3㎜の耐熱ガラスに密着させて,アルミニウム合金溶湯の湯流れ直接観察を行った.その結果,溶湯中にかなりの量の液状樹脂の浮力による上昇が観察された.このため湯流れシミュレーションシステムを構築するためには,液状樹脂の上昇を伴う二相流を考える必要があることが明らかになった.
本研究による湯流れ直接観察の成果から,液状樹脂の溶湯中への巻込みを考慮した湯流れシミュレーションシステムが構築されると,今後樹脂欠陥の少ない鋳造品を得ることが可能となることが予想される.

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019 2018 2017

All Journal Article (11 results) (of which Peer Reviewed: 11 results,  Open Access: 5 results) Presentation (7 results)

  • [Journal Article] Effect of Melt Velocity on Density of Aluminum Alloy Castings in Expendable Pattern Casting Process2022

    • Author(s)
      Koroyasu Sadatoshi
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 4 Pages: 629-635

    • DOI

      10.2320/matertrans.F-M2021857

    • NAID

      130008162159

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-04-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Reduced Pressure and Casting Design on Mold Filling in Expendable Pattern Casting Process of Thin Wall Aluminum Alloy Castings2021

    • Author(s)
      Koroyasu Sadatoshi
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 62 Issue: 10 Pages: 1569-1575

    • DOI

      10.2320/matertrans.F-M2021843

    • NAID

      130008091628

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2021-10-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Reduced Pressure and Casting Design on Mold Filling in Expendable Pattern Casting Process of Thin Wall Aluminum Alloy Castings2021

    • Author(s)
      頃安 貞利
    • Journal Title

      Journal of Japan Foundry Engineering Society

      Volume: 93 Issue: 3 Pages: 121-127

    • DOI

      10.11279/jfes.93.121

    • NAID

      130008013907

    • ISSN
      1342-0429, 2185-5374
    • Year and Date
      2021-03-25
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of Reduced Pressure, Casting Design and Heat Transfer Resistance of Liquid Resin on Mold Filling in Expendable Pattern Casting Process of Aluminum Alloy2020

    • Author(s)
      S. Koroyasu
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 61 Issue: 3 Pages: 528-533

    • DOI

      10.2320/matertrans.F-M2019868

    • NAID

      130007801628

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2020-03-01
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 薄肉アルミニウム合金の消失模型鋳造法における湯流れに及ぼす塗型の断熱性の影響2019

    • Author(s)
      頃安 貞利
    • Journal Title

      鋳造工学

      Volume: 91 Pages: 743-746

    • NAID

      40022052763

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] アルミニウム合金消失模型鋳造法の湯流れに及ぼす減圧と鋳造方案及び液状樹脂伝熱抵抗の影響2019

    • Author(s)
      頃安 貞利
    • Journal Title

      鋳造工学

      Volume: 91 Pages: 737-742

    • NAID

      130007740193

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Vibration Condition on Appearance of Casting in Expendable Casting Process using Artificial Sand2019

    • Author(s)
      S. Koroyasu and A. Ikenaga
    • Journal Title

      5th Anual Conference on Lost Foam, V-Process and Full Mold Castiong Technology in Hefei, China

      Volume: 1 Pages: 43-49

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Artificial Sand Filling on Appearance and Dimensional Accuracy of Casting in Expendable Pattern Casting Process2018

    • Author(s)
      SADATOSHI KOROYASU, AKIRA IKENAGA
    • Journal Title

      Transactions of 24th Anual Conference on Lost Foam, V Method and Full Mold Castiong Technology in China

      Volume: 1 Pages: 31-36

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] 消失模型鋳造法における振動塗型槽を用いた場合の塗型付着性に及ぼす振動条件の影響2018

    • Author(s)
      池永明, 衣川眞司, 頃安貞利
    • Journal Title

      鋳造工学

      Volume: 90 Pages: 11-16

    • NAID

      130006328088

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Coat Permeability on Mold Filling in Expendable Pattern Casting Process of Thin Wall Aluminum Alloy Casting2017

    • Author(s)
      Sadatoshi Koroyasu
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 58 Issue: 4 Pages: 635-640

    • DOI

      10.2320/matertrans.F-M2017803

    • NAID

      130006777331

    • ISSN
      1345-9678, 1347-5320
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] 人工砂を用いた消失模型鋳造法における鋳型の熱吸収性と模型変形に及ぼす砂流動性の影響2017

    • Author(s)
      頃安貞利, 範国三男, 嶋田祐典
    • Journal Title

      鋳造工学

      Volume: 89 Pages: 510-515

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 消失模型鋳造法における鋳造品の外観に及ぼす充てん砂の振動流動性の影響2020

    • Author(s)
      頃安貞利
    • Organizer
      日本機械学会関東支部 2020茨城講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 消失模型鋳造法における鋳造品の寸法精度に及ぼす鋳枠の振動条件の影響2019

    • Author(s)
      頃安 貞利
    • Organizer
      日本機械学会関東支部 2019茨城講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 人工砂を用いた消失模型鋳造法における鋳造品の外観に及ぼす振動条件の影響2019

    • Author(s)
      頃安 貞利
    • Organizer
      日本鋳造工学会第174回全国講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 消失模型鋳造法における鋳造品の外観と寸法精度に及ぼす充てん砂の影響2018

    • Author(s)
      頃安貞利
    • Organizer
      日本機械学会関東支部2018茨城講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 人工砂を用いた消失模型鋳造法におけるアルミニウム合金鋳物の外観と寸法精度2018

    • Author(s)
      頃安貞利
    • Organizer
      日本鋳造工学会第172回全国講演大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 薄肉アルミニウム合金の消失模型鋳造法における溶湯流動長に及ぼす塗型の断熱性の影響2017

    • Author(s)
      頃安貞利
    • Organizer
      日本機械学会関東支部2017茨城講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 消失模型鋳造法による薄肉アルミニウム合金鋳物の湯流れに及ぼす減圧の影響2017

    • Author(s)
      頃安貞利
    • Organizer
      日本鋳造工学会第170回全国講演大会
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi