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Empirical research on innovative processing methods to achieve lighter weight and higher strength

Research Project

Project/Area Number 20K05172
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionKomatsu University

Principal Investigator

Tomizawa Atsushi  公立小松大学, 生産システム科学部, 特任教授 (10744980)

Co-Investigator(Kenkyū-buntansha) 末吉 敏恭  琉球大学, 工学部, 准教授 (10264475)
政木 清孝  埼玉工業大学, 工学部, 教授 (30323885)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords熱間曲げ / 焼入れ / 3次元曲げ / せん断曲げ / 焼き入れ / 加工熱処理 / 熱間3次元曲げ
Outline of Research at the Start

自動車に対するCO2排出量削減と衝突安全性向上の要求の高まりを受けて,3次元熱間曲げ焼入れ技術(鋼管の焼入れと曲げ加工の同時加工プロセス:以下3DQ)が開発された.しかし,『しわ』の発生と『板厚減少』の課題があった.さらに,次世代自動車におけるバッテリー保護の目的のために,従来の3DQでは対応できない小さな曲げ半径の加工が要求される軽量で堅牢な構造部材の実用化が望まれている.本研究では,従来の3DQでの課題解決と自動車産業界からの要求に応えるため,さらなる造形性の向上(成形可能範囲の拡大)を目的として,革新的な加工技術を提案し,その変形特性や加工限界を実験と理論面から検討する.

Outline of Final Research Achievements

Three-dimensional hot bending and quenching (3DQ) technology, which enables the manufacture of automotive parts with a pressure of 1470 MPa or higher, has been developed to improve fuel economy and crash safety of automobile.
In this study, empirical research work on new "shear bending 3DQ" method is carried out to solve the problems of "wrinkles" and "thickness " in conventional 3DQ.A new high-rigidity testing machine was designed and introduced for experimental research of a new "shear bending 3DQ" in which the deformation mode of processing is the shear mode. The special induction heating coil and the compact cooling nozzle also are designed. Through experiments using the testing machine and the heating/cooling equipment, it is confirmed that this new shear bending 3DQ method is effective.

Academic Significance and Societal Importance of the Research Achievements

近年,環境問題を解決するため,バッテリーを搭載したハイブリッド車や電気自動車の改良が続けられている.これらの車両ではバッテリーが高重量となるため,高強度化による部品の軽量化や電池を保護するための堅牢な保護構造が必要となる.これらに対応するために,今回の研究成果は上記の要求や必要性にぴったり合致し,しかも安価でリサイクル性に優れた鋼の持つ性能を究極まで引き出すものであり,また日本の独自技術であることから,その実施意義は極めて高い.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (5 results) Patent(Industrial Property Rights) (4 results) (of which Overseas: 2 results)

  • [Journal Article] Affecting Factors of Partially Quenched S-shaped Products for the Improvement of Energy Absorption in Axial Crash2022

    • Author(s)
      TOMIZAWA Atsushi、CHANSOCHEAT Tieng、UEMATSU Kazuo、NAKAZAWA Yoshiaki
    • Journal Title

      Journal of the Japan Society for Technology of Plasticity

      Volume: 63 Issue: 734 Pages: 33-38

    • DOI

      10.9773/sosei.63.33

    • ISSN
      0038-1586, 1882-0166
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sheet Hydroforming Technology of Welded Double and Triple Blanks2022

    • Author(s)
      TOMIZAWA Atsushi、SHIMADA Naoaki、SATO Masahiko
    • Journal Title

      Journal of the Japan Society for Technology of Plasticity

      Volume: 63 Issue: 733 Pages: 19-24

    • DOI

      10.9773/sosei.63.19

    • NAID

      130008163602

    • ISSN
      0038-1586, 1882-0166
    • Related Report
      2021 Research-status Report
  • [Journal Article] Crash Characteristics of Partially Quenched Curved Products by Three-Dimensional Hot Bending and Direct Quench2020

    • Author(s)
      Tomizawa Atsushi、Soedjatmiko Hartanto Sanny、Uematsu Kazuo、Shimada Naoaki
    • Journal Title

      Metals

      Volume: 10 Issue: 10 Pages: 1322-1322

    • DOI

      10.3390/met10101322

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] FEM による熱間せん断曲げの予備検討―熱間せん断曲げ技術の開発 第1 報 ―2022

    • Author(s)
      植松, 富澤
    • Organizer
      塑性加工学会 2022年度 塑性加工春季講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 熱間せん断曲げの予備試験結果―熱間せん断曲げ技術の開発 第2 報―2022

    • Author(s)
      富澤,横山,植松
    • Organizer
      塑性加工学会 2022年度 塑性加工春季講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 角管の熱間せん断曲げの試験結果―熱間せん断曲げ技術の開発 第3 報―2022

    • Author(s)
      富澤,横山,松尾,植松
    • Organizer
      塑性加工学会 第73回塑性加工連合講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 3次元熱間曲げ焼入れによる部分焼入れ部品の衝突特性(1)2020

    • Author(s)
      植松一夫, 嶋田直明, SANNY SOEDJATMIKO HARTANTO, 富澤 淳
    • Organizer
      自動車技術会2020年春季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 3次元熱間曲げ焼入れによる部分焼入れ部品の衝突特性(2)2020

    • Author(s)
      富澤 淳, CHANSOCHEAT TIENG, 植松一夫, 中澤 嘉明
    • Organizer
      自動車技術会2020年春季大会
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 冷却装置及び冷却方法2022

    • Inventor(s)
      富澤淳,植松一夫
    • Industrial Property Rights Holder
      日本製鉄(株)
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-046821
    • Filing Date
      2022
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 中空屈曲部品の製造装置及び中空屈曲部品の製造方法2021

    • Inventor(s)
      富澤淳,植松一夫
    • Industrial Property Rights Holder
      日本製鉄(株)
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-212410
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 冷却装置及び冷却方法2021

    • Inventor(s)
      富澤淳,植松一夫
    • Industrial Property Rights Holder
      日本製鉄(株)
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
    • Overseas
  • [Patent(Industrial Property Rights)] 中空屈曲部品の製造方法及び中空屈曲部品の製造装置2021

    • Inventor(s)
      富澤淳,植松一夫
    • Industrial Property Rights Holder
      日本製鉄(株)
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
    • Overseas

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Published: 2020-04-28   Modified: 2024-01-30  

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