JP2020523476A - 付加製造時の凝固速度制御のためのシステム及び方法 - Google Patents
付加製造時の凝固速度制御のためのシステム及び方法 Download PDFInfo
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Abstract
Description
Claims (13)
- 基板上に三次元造形物体を形成する方法であって、
前記基板上に、該基板上を任意の処理速度で任意の処理方向に移動するエネルギービームを照射し、前記基板上にメルトプールを形成すること、
前記メルトプール内に付加材料を堆積させること、
前記メルトプールが放射するエネルギーを測定すること、
測定された前記エネルギーに基づいて前記メルトプールの熱的特徴を決定すること、
前記熱的特徴に基づいて、前記メルトプールの液相領域、前記メルトプールを囲む固相領域及び前記メルトプールの遷移領域を同定すること、
前記メルトプールの前記遷移領域の物理パラメータを定量化すること、
前遷移領域の前記物理パラメータと前記処理速度との比較に基づいて実凝固速度を決定すること、
前記実凝固速度に基づいて処理パラメータを調整することを含む方法。 - 前記メルトプールの前記熱的特徴の決定は、前記メルトプールの見かけ熱的特徴を決定することを含み、
前記液相領域、前記固相領域及び前記遷移領域の同定は、前記メルトプールの前記見かけ熱的特徴に基づいて前記液相領域、前記固相領域及び前記遷移領域を同定することを含む請求項1記載の方法。 - 前記メルトプールの前記熱的特徴の決定は、前記メルトプールの見かけ熱的特徴を決定することを含み、
前記方法は、さらに、
前記メルトプールの平均実温度を決定すること、
前記見かけ熱的特徴の平均見かけ温度を算出すること、
前記平均見かけ温度と前記平均実温度との比較に基づいて補正係数を決定すること、
前記見かけ熱的特徴に前記補正係数を付加して前記メルトプールの補正熱的特徴を得ることを含み、
前記液相領域、前記固相領域及び前記遷移領域の同定は、前記メルトプールの前記補正熱的特徴に基づいて前記液相領域、前記固相領域及び前記遷移領域を同定することを含む請求項1記載の方法。 - 前記補正係数は前記平均見かけ温度と前記平均実温度との差に比例する請求項3記載の方法。
- 前記メルトプールの前記平均実温度の決定は、前記メルトプールにパイロメータを向けることを含む請求項3記載の方法。
- 前記パイロメータは二波長パイロメータであり、
前記メルトプールの前記平均実温度の決定は、第1の波長で第1エネルギープロファイルを決定すること、第2の波長で第2エネルギープロファイルを決定すること、前記第1エネルギープロファイルと前記第2エネルギープロファイルの比率に基づいて前記平均実温度を算出することを含む請求項5記載の方法。 - 前記メルトプールの前記遷移領域の前記物理パラメータの定量化は、前記遷移領域の面積と前記遷移領域及び前記液相領域を合計した面積の比率を決定することを含む請求項1記載の方法。
- 基板上に三次元造形物体を形成するための付加製造装置であって、
前記基板上にメルトプールを形成するためのエネルギービームを前記基板上に照射するように構成されたエネルギー源と、
前記メルトプール内に付加材料を堆積させるように構成されたノズルと、
前記メルトプールが放射するエネルギーを測定するように構成されたカメラと、
前記エネルギー源及び前記カメラに作動的に接続された制御装置とを備え、
前制御装置は、
前記エネルギー源を、前記エネルギービームが任意の処理速度で任意の処理方向に前記基板上を移動するように移動させ、
前記カメラによって測定された前記メルトプールのエネルギーに基づいて前記メルトプールの熱的特徴を決定し、
前記熱的特徴に基づいて、前記メルトプールの液相領域、前記メルトプールを囲む固相領域、及び前記液相領域と前記固相領域との間の前記メルトプールの遷移領域を同定し、
前記メルトプールの前記遷移領域の物理パラメータを定量化し、
前記遷移領域の前記物理パラメータと前記処理速度との比較に基づいて実凝固速度を決定し、
前記実凝固速度に基づいて処理パラメータを調整するようにプログラムされた装置。 - 前記制御装置は、さらに、
前記メルトプールの見かけ熱的特徴を決定することによって前記メルトプールの前記熱的特徴を決定し、
前記メルトプールの前記見かけ熱的特徴に基づいて前記液相領域、前記固相領域及び前記遷移領域を同定するようにプログラムされた請求項8記載の装置。 - 前記メルトプールの平均実温度を測定するように構成されたパイロメータをさらに備えた請求項8記載の装置。
- 前記制御装置は、さらに、
前記メルトプールの見かけ熱的特徴を決定することによって前記メルトプールの前記熱的特徴を決定し、
前記見かけ熱的特徴の平均見かけ温度を算出し、
前記平均見かけ温度と前記平均実温度との比較に基づいて補正係数を決定し、
前記見かけ熱的特徴に前記補正係数を付加して前記メルトプールの補正熱的特徴を得、
前記メルトプールの前記補正熱的特徴に基づいて前記液相領域、前記固相領域及び前記遷移領域を同定するようにプログラムされた請求項10記載の装置。 - 前記制御装置は、さらに、前記平均見かけ温度と前記平均実温度との差に比例する前記補正係数を決定するようにプログラムされた請求項11記載の装置。
- 前記パイロメータは、第1の波長で前記メルトプールの第1エネルギープロファイルを決定し、第2の波長で前記メルトプールの第2エネルギープロファイルを決定するように構成された二波長パイロメータであり、
前記制御装置は、さらに、前記第1エネルギープロファイルと前記第2エネルギープロファイルの比率に基づいて前記平均実温度を算出するようにプログラムされた請求項11記載の装置。
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PCT/US2018/036278 WO2018226844A1 (en) | 2017-06-06 | 2018-06-06 | Systems and methods for solidification rate control during additive manufacturing |
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DE112022003685T5 (de) | 2021-07-26 | 2024-05-23 | Taiyo Nippon Sanso Corporation | Vorrichtung zur herstellung von mehrschichtstrukturen und verfahren zur herstellung von mehrschichtstrukturen |
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FR3090014B1 (fr) * | 2018-12-18 | 2021-04-09 | Safran | Dispositif de fabrication d’une piece en matiere metallique par depot de matiere |
US11472115B2 (en) * | 2019-03-21 | 2022-10-18 | General Electric Company | In-situ monitoring system assisted material and parameter development for additive manufacturing |
US11697248B2 (en) * | 2019-09-30 | 2023-07-11 | Fisher Controls International Llc | Optimized pathing solution for additive manufacturing |
IT201900023991A1 (it) | 2019-12-13 | 2021-06-13 | Cms Spa | Centro di lavoro e metodo per lavorare pezzi |
CN112658281B (zh) * | 2020-12-23 | 2022-01-07 | 湖南大学 | 一种提高激光增材制造高熵合金内部质量的方法 |
DE102021208974A1 (de) | 2021-08-16 | 2023-02-16 | HPL Technologies GmbH | Beschichtungsvorrichtung zur Oberflächenveredelung von einem Werkstück |
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JP2002519200A (ja) * | 1998-06-30 | 2002-07-02 | ジオティー マズムダー | レーザクラッディング装置及び方法 |
WO2015151761A1 (ja) * | 2014-04-03 | 2015-10-08 | 株式会社日立製作所 | 相変態の取得装置、取得方法、製造装置 |
US20160185048A1 (en) * | 2014-11-18 | 2016-06-30 | Sigma Labs, Inc. | Multi-sensor quality inference and control for additive manufacturing processes |
Cited By (1)
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DE112022003685T5 (de) | 2021-07-26 | 2024-05-23 | Taiyo Nippon Sanso Corporation | Vorrichtung zur herstellung von mehrschichtstrukturen und verfahren zur herstellung von mehrschichtstrukturen |
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US20210146613A1 (en) | 2021-05-20 |
WO2018226844A1 (en) | 2018-12-13 |
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