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2005 Fiscal Year Final Research Report Summary

Development of Lead-Free Copper alloy Manufacturing System Based on Life Cycle Assessment

Research Project

Project/Area Number 16510063
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental technology/Environmental materials
Research InstitutionKagoshima University

Principal Investigator

SUEYOSH Hidekazu  Kagoshima University, Graduate School of Science and Engineering, Professor, 大学院・理工学研究科, 教授 (70041548)

Project Period (FY) 2004 – 2005
Keywordslead-free copper alloy / life cycle assessment / ecoinaterials / machinability / lead removal / recycle
Research Abstract

The method for removing Pb from bronze containing Pb was examined by the compound-separation method. NaF is added to molten bronze, followed by adding the Ca-Si compound. Therefore, the reaction of ca with Pb is promoted without the reaction of Ca with Sn. Using this method, 82% of Pb can be removed from bronze containing 5.5 mass% Pb.
The inventory analysis of both the former Pb-free copper alloy manufacturing system that uses virgin materials and the new one that uses copper alloy scrap containing Pb, which is removed in the production process, was carried out. The results show that the shift from the former manufacturing system to the new one reduces environmental impacts such as global warming, acidification, energy consumption and resource consumption significantly. Thus in the LCA perspective, the new manufacturing system that uses a recycled copper alloy scrap is superior to the former one that uses virgin materials.
The effect of molybdenum disulfide on machinability of bronze was examined. The result shows the cutting forces and chip-disposability can be greatly improved by the addition of molybdenum disulfide.

  • Research Products

    (10 results)

All 2006 2005 2004

All Journal Article (8 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] 含鉛青銅スクラップからの鉛除去2005

    • Author(s)
      中野 敦
    • Journal Title

      日本金属学会誌 第69巻・第8号

      Pages: 699-702

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] LCA of Manufacturing Lead-Free Copper Alloys2005

    • Author(s)
      A.Nakano
    • Journal Title

      Materials Transactions Vol.46・No.12

      Pages: 2713-2718

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Removal of Lead from Copper Alloy Scraps by Compound-Separation Method2005

    • Author(s)
      A.Nakano
    • Journal Title

      Materials Transactions Vol.46・No.12

      Pages: 2719-2724

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 鉛フリー青銅生産システムのLCA2005

    • Author(s)
      中野 敦
    • Journal Title

      日本金属学会誌 第69巻・第12号

      Pages: 1053-1056

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Removal of Lead from Scrap Bronze2005

    • Author(s)
      A.Nakano, et al.
    • Journal Title

      J.Japan Inst.Metals Vol.69, No.8

      Pages: 699-702

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] LCA of Manufacturing Lead-Free Copper Alloy2005

    • Author(s)
      A.Nakano, et al.
    • Journal Title

      Materials Trans. Vol.46, No.12

      Pages: 2713-2718

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Removal of Lead from Copper Alloy Scraps by Compound-Separation Method2005

    • Author(s)
      A.Nakano, et al.
    • Journal Title

      Materials Trans. Vol.46, No.12

      Pages: 2719-2724

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Life Cycle Assessment of Manufacturing System of Lead-Free Bronze Products2005

    • Author(s)
      A.Nakano, et al.
    • Journal Title

      J.Japan Inst.Metals Vol.69, No.12

      Pages: 1053-1056

    • Description
      「研究成果報告書概要(欧文)」より
  • [Patent(Industrial Property Rights)] 快削銅合金及びその製造方法2006

    • Inventor(s)
      末吉秀一, 加治屋直樹
    • Industrial Property Rights Holder
      鹿児島大学
    • Industrial Property Number
      特願2006-119456
    • Filing Date
      2006-04-24
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] 銅合金中の鉛除去方法2004

    • Inventor(s)
      山田宏作, 末吉秀一, 中村俊一, 松田豪彦
    • Industrial Property Rights Holder
      九州タブチ, 末吉秀一, 鹿児島県
    • Industrial Property Number
      特願2004-357575
    • Filing Date
      2004-12-10
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2007-12-13  

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