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2002 Fiscal Year Final Research Report Summary

Estimation method of bonding state in composite casting with different material insertions

Research Project

Project/Area Number 13650794
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Metal making engineering
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

NOGUCHI Toru  Hokkaido Univ., Grad. School of Eng., Prof., 大学院・工学研究科, 教授 (80001220)

Project Period (FY) 2001 – 2002
KeywordsCasting / Cast-in bonding / Composite casting / Bonding / Cast iron / Solidification simulation / Estimation of bonding / Size effect
Research Abstract

Composite casting is a convenient way of making high performance castings by bonding different insert materials utilizing productivity of casting process. This study is to find a method to predict the bonding state, bond or no bond, from the geometrical and temperature data of the insert and the casting. The study consists of three steps ;
(1)insertion experiment to bond mild steel disks or rings to the end face of a cylindrical cast iron castings, and the solidification analysis of the melt,
(2)simulations of pipe and bar insertions with various dimension combinations, and
(3)total examination of the bonding state with geometrical data from the simulations and the experiments. The results are as follows :
(1) Necessary thermal condition for metallurgical bonding was established, wet contact of liquid melt with the insert longer than 100 s both in buried insertion and end face bonding.
(2) Necessary volume ratio, VR, to achieve the condition is 8-10 for pipe and bar insertions and about 30 … More in end face bonding.
(3) However, the critical VR depends on the thickness of the inserts, the similarity with VR is not vaild.
(4) Bond or no bond can be expressed by the areas in a t (insert thickness) - 1/VR diagram, the approximate border lines were indicated.
(5) The diagram are divided into three zones, (I)small insert zone where bonding state is determined by the volume of the casting, (II)intermediate zone where necessary volume ratio is almost constant and the minimum, and (III) large insert zone where the bonding is determined by the insert thickness.
(6) Unified judging diagram for pipe and bar insertions and end face bonding may be possible by some conversion parameters.
Another results of the stydy are ;
(7) data of appropriate range of material constants and boundary parameters for simulation were obtained,
(8) mechanism and the thermal conditions of melting of steel inserts in cast iron melt was clarified, and
(9) mechanism of bonding WC-Co insert with cast iron was also revealed. Less

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 堀川紀孝, 王立 松, 野口 徹, 他: "鋳鉄溶湯による軟鋼の鋳ぐるみ接合における心材の溶融"日本機械学会論文集. 67(667)C. 2673-2678 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀川紀孝, 伊藤高志, 野口 徹, 他: "鋳鉄によるWC-Co系超硬合金の鋳ぐるみ端面接合とその熱的条件"鋳造工学. 73. 668-673 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] HORIKAWA, N., NOGUCHI, T., et al.: "Insertion Bonding of Mild Steel to an End Surface of ductile Iron Castings"Proceedings of the 7th Asian Foundry Congress, Taipei. 225-234 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀川紀孝, 加野潤二, 野口 徹: "一端面を接合面とする鋳鉄による軟鋼の鋳ぐるみ接合"鋳造工学. 74. 229-234 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] HORIKAWAN., NOGUCHIT., et al.: "Melting of Steel Insert by Cast Iron Melt in Cast-in Insertion Bonding"Proceedings of the 65th World Foundry Congress, Gyongju, Korea. 131-138 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀川紀孝, 加野潤二, 野口 徹, 他: "鋳ぐるみの端面接合の数値解析における計算条件に関する考察"鋳造工学. 75. 95-101 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N. Horikawa, L. Wang, T. Noguchi, et al.: "Melting of Inserts in Cast-in Bonding of Mild Steel in Cast Iron"Trans. Of JSME. 67-660-C. 2673-2678 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Horikawa, T. Itoh, T. Noguchi: "Cast-in Insertion of WC-Co Alloys on End-surface of Cast Iron and Thermal Conditions for Bonding"J. of JFS. 73-10. 668-673 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Horikawa, T. Noguchi: "Insertion Bonding of Mild Steel to an End Surface of Ductile Iron Castings"Proceedings of the 7th Asian Foundry Congress, Taipei. 225-234 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Horikawa, J. Kano, T. Noguchi, T. Nakamura: "Cast-in Bonding of Mild Steel at End Surface of Cast Iron Castings"J. of JFS. 74-4. 229-234 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Horikawa, T. Noguchi: "Melting of Steel Inserts by Cast Iron Melt in Cast-in Insertion Bonding"Proceedings of the 65th World Foundry Congress, Gyongju, Korea. 131-138 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Horikawa, J. Kano, T. Itoh, T. Noguchi: "Discussion on Calculatiing Factors in Numerical Analysis of End-Surface Cast-in Insertions"J. of JFS. 75-2. 95-101 (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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