JP7101122B2 - 摩擦撹拌点接合装置及び摩擦撹拌点接合方法 - Google Patents
摩擦撹拌点接合装置及び摩擦撹拌点接合方法 Download PDFInfo
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- 238000005304 joining Methods 0.000 title claims description 126
- 238000003756 stirring Methods 0.000 title claims description 80
- 238000000034 method Methods 0.000 title claims description 15
- 238000003825 pressing Methods 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 38
- 238000006073 displacement reaction Methods 0.000 claims description 33
- 230000009466 transformation Effects 0.000 claims description 20
- 230000007423 decrease Effects 0.000 claims description 11
- 238000013019 agitation Methods 0.000 claims description 5
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- 229910001566 austenite Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/123—Controlling or monitoring the welding process
- B23K20/1235—Controlling or monitoring the welding process with temperature control during joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/127—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding friction stir welding involving a mechanical connection
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding involving metallurgical change
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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Description
図11は、従来の摩擦撹拌点接合時のツール温度と本願の摩擦撹拌点接合時のツール温度とを比較したグラフである。図12は、従来の摩擦撹拌点接合よる接合部と本願の摩擦撹拌点接合による接合部との各断面写真である。図11及び12から分かるように、従来の摩擦撹拌点接合では、ツール温度の最大値がワークのAc3態点よりも高くオーステナイト変態したため、焼入れにより組織硬化(脆化)が顕著に生じているが、本願の摩擦撹拌点接合では、ツール温度の最大値がワークのAc3変態点より低くオーステナイト変態が完了していないため、焼入れによる組織硬化が抑制されている。しかも、本願の摩擦撹拌点接合では、ツールでは、ツール温度の最大値が700℃以上で十分に高いため、ワークの塑性流動域の流動性が十分に高い状態で円滑な撹拌が行われ、綺麗で滑らかな接合断面が形成されている。なお、ここまでは加圧力を制御対象とした例を挙げたが、押込み量(即ち、ツール位置)を制御対象としてもよい。
8 回転駆動器
10 変位駆動器
11 ツール
20 コントローラ
ST 設定範囲
W1,W2 板材
Wa 重ね合わせ部
Claims (8)
- 複数の板材を重ね合わせて点接合する摩擦撹拌点接合装置であって、
前記複数の板材の重ね合わせ部とツールとを互いに相対変位させる変位駆動器と、
前記ツールを回転させる回転駆動器と、
前記重ね合わせ部に前記ツールを回転させた状態で押し込んで摩擦撹拌点接合をするように前記変位駆動器及び前記回転駆動器を制御するコントローラと、を備え、
前記コントローラは、摩擦撹拌点接合中において、前記回転駆動器を制御して前記ツールの回転数を前記ツールの温度が前記重ね合わせ部の接合温度と同じとみなせる所定回転数以下の値に設定し、かつ、前記変位駆動器を制御して、上限閾値をAc3変態点より低い温度とした所定の設定範囲に前記ツールの温度が保たれるように前記ツールの加圧力又は押込み量を増減調整する温度保持制御を実行する、摩擦撹拌点接合装置。 - 複数の板材を重ね合わせて点接合する摩擦撹拌点接合装置であって、
前記複数の板材の重ね合わせ部とツールとを互いに相対変位させる変位駆動器と、
前記ツールを回転させる回転駆動器と、
前記重ね合わせ部に前記ツールを回転させた状態で押し込んで摩擦撹拌点接合をするように前記変位駆動器及び前記回転駆動器を制御するコントローラと、を備え、
前記コントローラは、摩擦撹拌点接合中において、前記回転駆動器を制御して前記ツールの回転数を前記ツールの温度が前記重ね合わせ部の接合温度と同じとみなせる所定回転数以下の値に設定し、かつ、前記変位駆動器を制御して前記ツールの温度が所定の設定範囲に前記ツールの温度が保たれるように前記ツールの加圧力又は押込み量を増減調整する温度保持制御を実行し、
前記温度保持制御では、
前記ツールの温度が前記設定範囲内にあるとき、前記ツールの加圧力又は押込み量が所定の変動パターンにて増減を繰り返すように前記変位駆動器が制御され、
前記ツールの温度が前記設定範囲を上回ると、前記ツールの加圧力又は押込み量が減少するように前記変位駆動器が制御され、
前記ツールの温度が前記設定範囲を下回ると、前記ツールの加圧力又は押込み量が増加するように前記変位駆動器が制御される、摩擦撹拌点接合装置。 - 前記温度保持制御では、
前記ツールの温度が前記設定範囲を上回ると、前記変動パターンの周波数又は最大加圧力の付与時間の少なくとも一方が減少するように前記変位駆動器が制御され、
前記ツールの温度が前記設定範囲を下回ると、前記変動パターンの周波数又は最大加圧力の付与時間の少なくとも一方が増加するように前記変位駆動器が制御される、請求項2に記載の摩擦撹拌点接合装置。 - 前記コントローラは、前記温度保持制御中おいて前記ツールが前記重ね合わせ部の所定の完了深さに到達したと判定されると、前記変位駆動器を制御して前記ツールを前記重ね合わせ部から引き抜く、請求項1乃至3のいずれか1項に記載の摩擦撹拌点接合装置。
- 前記コントローラは、前記温度保持制御の実行前において、前記ツールの回転数が前記温度保持制御時よりも高い状態で前記ツールを前記重ね合わせ部に圧入するように前記回転駆動器及び前記変位駆動器を制御する初期圧入制御を実行する、請求項1乃至4のいずれか1項に記載の摩擦撹拌点接合装置。
- 前記コントローラは、前記ツールの温度として、前記重ね合わせ部に対する前記ツールの接触面から2mm以内の領域の前記ツールの内部温度を取得する、請求項1乃至5のいずれか1項に記載の摩擦撹拌点接合装置。
- 前記コントローラは、前記温度保持制御中に、更に、前記回転駆動器を制御して前記ツールの温度が所定の設定範囲に保たれるように前記ツールの回転数を調整する、請求項1乃至6のいずれか1項に記載の摩擦撹拌点接合装置。
- 複数の板材を互いに重ね合わせて点接合する摩擦撹拌点接合方法であって、
前記複数の板材の重ね合わせ部にツールを回転させた状態で押し込んで摩擦撹拌点接合を開始する工程と、
前記摩擦撹拌点接合中に、前記ツールの温度が前記重ね合わせ部の接合温度と同じとみなせる回転数で前記ツールを回転させる工程と、
前記摩擦撹拌点接合中に、上限閾値をAc3変態点より低い温度とした所定の設定範囲に前記ツールの温度が保たれるように前記ツールの加圧力又は押込み量を調整する工程と、を備える、摩擦撹拌点接合方法。
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- 2017-10-31 CN CN201780064526.8A patent/CN109862988A/zh active Pending
- 2017-10-31 EP EP17863953.0A patent/EP3533556B1/en active Active
- 2017-10-31 JP JP2018547844A patent/JP7101122B2/ja active Active
- 2017-10-31 US US16/344,762 patent/US11185944B2/en active Active
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EP3533556B1 (en) | 2022-11-30 |
US20190262934A1 (en) | 2019-08-29 |
KR102156352B1 (ko) | 2020-09-15 |
JPWO2018079806A1 (ja) | 2019-09-19 |
WO2018079806A1 (ja) | 2018-05-03 |
KR20190077460A (ko) | 2019-07-03 |
EP3533556A4 (en) | 2020-08-19 |
EP3533556A1 (en) | 2019-09-04 |
US11185944B2 (en) | 2021-11-30 |
CN109862988A (zh) | 2019-06-07 |
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