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Developmental Research for Abrasive Jet Cutting Technology

Research Project

Project/Area Number 02555037
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionTohoku university

Principal Investigator

KOBAYASHI Rroji  Tohoku Univ., Faculty of Engineering, Professor, 工学部, 教授 (70006170)

Co-Investigator(Kenkyū-buntansha) KOSODO Hiroshi  Daikin Industries, Ltd., Sen. Research Engineer, 油機事業部技術部, 主任研究員
FUKUNISHI Yu  Tohoku Univ., Faculty of Eng., Assoc. Professor, 工学部, 助教授 (60189967)
SHOJI Tetsuo  Tohoku Univ., Faculty of Engineering, Professor, 工学部, 教授 (80091700)
TAKAYAMA Kazuyoshi  Tohoku Univ., Inst. of Fluid Science, Professor, 流体科学研究所, 教授 (40006193)
SHIMA Akira  Tohoku Univ., Inst. of Fluid Science, Professor, 流体科学研究所, 教授 (30006168)
小曾戸 博  ダイキン工業(株), 油機事業部技術部, 主任研究員
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥13,900,000 (Direct Cost: ¥13,900,000)
Fiscal Year 1991: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1990: ¥10,400,000 (Direct Cost: ¥10,400,000)
KeywordsWater Jet / Abrasive Jet / Cutting Processing / Optical Measurement / Multiphase Flow / 加工パラメ-タ / 高性能ノズルヘッド / 高速混相流動機構 / 光計測法
Research Abstract

The abrasive jet technology is applied to the processing of metallic and non-metallic materials, the high pressure cleaning and the dismounting of buildings including nuclear power plants. The basic mechanism of the present technology is impact fractures of the materials caused by impinging og high speed solid particles which are accelerated by the water jet issuing from the high pressure nozzle. Many industries have an interest in this new technology as one of advanced technologies and expect to be developed for practical use.
The objective of the present research is to develop the abrasive jet technology more effectively and in higher accuracy, to make clear the cutting characteristics of the abrasive jet processing, and to find the optimum processing conditions. The main results obtained are as follows :
1. The design of nozzle head is an important step in the abrasive jet processing. Some nozzle heads of different profiles were designed and tested. We could finally determine the optimum nozzle head showing high performances.
2. The abrasive jet is a high speed three-phase flow consisting of abrasives, water drops and air. We succeeded to measure directily the velocity of abrasives in the jet by using a double light exposure and a computer-aided graphic analysis applying a fuzzy theory.
3. The dynamical process of abrasive jet cutting was observed in detail through a transparent test matirial. Data analysis by computer made quantitatively clear the characteristics of striations on the cutting surface, which were closely related to the finishing accuracy.
4. The optimum conditions to remain the roughness of cutting surface less were found under the combinations of the delivery pressure and the traverse speed of the nozzle.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 福西 祐: "アブレシブジェットにおける砥粒の加速特性の計測" 日本機械学会第68期全国大会講演論文集(B). 900ー59. 443-445 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 陵二: "アブレシブジェット加工における加工面の特性" 日本機械学会東北支部第26期総会講演論文集. 911ー1. 22-24 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 陵二: "アブレシブジェット加工面の縞模様特性" 日本ウォ-タ-ジェット学会第7回研究発表講演会. 49-57 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 陵二: "アブレシブジェットによる加工面特性(加工パラメ-タによる変化)" 日本機械学会東北支部講演論文集. 911ー2. 86-88 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 陵二: "アブレシブジェットによる金属材料の加工精度" 日本機械学会東北支部講演論文集. 921ー1. 36-38 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 陵二: "アブレシブジェット加工の精度と加工パラメ-タ" 日本機械学会東北支部いわき地方講演会. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Fukunishi: "Measurement of Abrasive Acceleration in Abrasive Jet" Proc. of 68th National Meeting of Japan Soc. of Mech. Engrs., B. No. 900-59. 443-445 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] R. Kobayashi: "Cutting Surface Characteristics of Abrasive Jet Processing" Proc. of 26th General meeting at Tohoku Branch of Japan Soc. of Mech. Engrs.No. 911-1. 22-24 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] R. Kobayashi: "Striations of Material Surface Formed by Abrasive Jet Processing" Proc. of 7th Conf. of Water Jet Technal. Soc. of Japan. 49-57 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] R. Kobayashi: "Cutting Surface Characteristics of Abrasive Jet Processing (Effects of Cutting Parameter)" Proc. of Local Meeting at Tohoku Branch of Japan Soc. of Mech. Engrs.No. 911-2. 86-88 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] R. Kobayashi: "Cutting Accuracy of Metallic Materials by Abrasive Jet" Proc. of 27th General Meeting at Tohoku Branch of Japan Soc. of Mech. Engrs.No. 921-1. 36-38 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] R. Kobayashi: "Accuracy of Abrasive Jet Processing and Cutting Parameters" Proc. of Local Meeting at Tohoku Branch of Japan Soc. of Mech. Engrs.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 陵二,福西 祐 犬飼 朗,津田 直明: "アブレシブジェットによる加工面特性(加工パラメ-タによる変化)" 日本機械学会東北支部講演論文集. 911-2. 86-88 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小林 陵二,福西 祐 津田 直明: "アブレシブジェットによる金属材料の加工精度" 日本機械学会東北支部講演論文集. 921-1. 36-38 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小林 陵二,福西 祐 犬飼 朗,津田 直明: "アブレシブジェット加工面の縞模様特性" ウォ-タ-ジェット. 9. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小林 陵二,福西 祐 津田 直明: "アブレシブ加工の精度と加工パラメ-タ" 日本機械学会東北支部いわき地方講演会. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 福西 祐,小林 陵二 河村 文詔: "アブレシブジェット加工における砥粒速度の3次元計測" 日本ウォ-タ-ジェット学会第8回研究発表講演会. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 福西 祐,小林 陵二,犬飼 朗: "アブレシブジェットにおける砥粒の加速特性の計測" 日本機械学会第68期全国大会講演会講演論文集. 443-445 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 小林 陵二,福西 祐,犬飼 朗: "アブレシブジェット加工における加工面の特性" 日本機械学会東北支部第26期総会講演会講演概要集. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 小林 陵二,福西 祐,犬飼 朗,津田 直明: "アブレシブジェット切断加工面における縞状凹凸の研究" 日本ウォ-タ-ジェット学会第7回研究発表講演会. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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