2022 Fiscal Year Final Research Report
Development of hybrid joining via blasting and hot water treatment
| Project/Area Number |
20H02041
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 18020:Manufacturing and production engineering-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
木村 文信 東京大学, 生産技術研究所, 助教 (10739311)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 金属樹脂直接接合 / 成形接合 / ブラスト処理 / 熱水処理 / 加熱処理 / アルミニウム合金 / 亜鉛めっき鋼 |
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| Outline of Final Research Achievements |
In the metal-polymer direct joining resin using metal surface treatment, we performed the study to achieve a shear strength of more than 20 MPa in the forming joining technique by blast/hot-water treatment, to establish suitable surface treatment and joining methods for various metals, and to understand the contributing factors in the direct joining. We have experimentally confirmed that the secondary treatment of hot water treatment after blasting can be used to form Al and PBT direct joints more than 20 MPa, and that heat treatment and hot water treatment are also effective in joining SPCC and galvanized steel. The possibility that hydrogen bonding may play a significant role in the bonding process was also confirmed through the evaluation of molding bonding with additives mixed into the resin.
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| Free Research Field |
加工計測
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| Academic Significance and Societal Importance of the Research Achievements |
近年は自動車車両や航空機機体の樹脂化がハイピッチで進んでおり，金属と樹脂の直接接合技術は必要不可欠な技術となっている．本研究において，生産ラインと親和性の高いブラスト/熱水処理援用型成形接合技術を実現し，成形現象や接合メカニズムを統合的に解析・評価が進んでいるため，成形接合技術そのものの発展および産業展開に大きく貢献する成果であると言える．特に自動車産業において，金属・樹脂直接接合技術は確実に要求されるが，要素技術を海外から輸入する形になってしまうと国益の観点から見ても大きな損失である．その点を考慮すると，本研究のみならず，金属樹脂接合に関する国内研究開は極めて有意義である．
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