JP2016516888A - 調整された微細構造を備えるワークピースの製造装置及び製造方法 - Google Patents
調整された微細構造を備えるワークピースの製造装置及び製造方法 Download PDFInfo
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Abstract
Description
図3(a)に模式的に示すワークピース40は、図1に模式的に示された装置10を使用して選択的なレーザー溶融プロセスにより、約10から45μmの粒子サイズを持つステンレス鋼(316L)の粉末から形成されたものである。ステンレス鋼粉末の粒子サイズはレーザー回折を用いて決定された。その粒子サイズの分布は、実質的にガウス分布形状のプロファイルであり、最も小さい微粒子の粒子サイズは約10μmであり、最も大きい微粒子の粒子サイズは、約45μmである。10μm未満の微粒子、及び/又は、45μmを超える微粒子が、粉末内に存在してもよい。しかしながら、10μm未満、及び/又は、45μmを超える微粒子の数は、10から45μmの間のサイズを有する微粒子の数に比べて少ない。
Claims (15)
- 三次元ワークピースの製造装置(10)であって、
キャリア(16)と、
前記キャリア(16)上に原材料粉末を塗布する粉末塗布手段(14)と、
前記キャリア(16)上に塗布された前記原材料粉末を電磁放射線又は粒子放射線で選択的に照射する照射手段(18)と、
累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、前記粉末塗布手段(14)と前記照射手段(18)の作動を制御するように適合された制御ユニット(38)とを有するものであることを特徴とする装置。 - 前記照射手段(18)は、
少なくとも一つの放射源(24)と、
前記放射源(24)によって放出される放射ビームを誘導すること、及び処理することの少なくともいずれか一方を行う、少なくとも一つの光学ユニット(28)を備えるものであることを特徴とする請求項1に記載の装置。 - 前記制御ユニット(38)は、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのビームサイズ、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのビームプロファイル、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのスキャンスピード、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのスキャンパターン、及び、
前記放射源(24)の出力の少なくとも一つを調整するように、前記放射源(24)及び前記光学ユニット(28)の少なくともいずれか一方を制御するように適合されたものであることを特徴とする請求項2に記載の装置。 - 前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、前記キャリア(16)上に塗布される原材料粉末層の厚さを調整するように、前記粉末塗布手段(14)を制御するように適合されたものであることを特徴とする請求項1から請求項3のいずれか一項に記載の装置。
- さらに、前記原材料粉末を電磁放射線又は粒子放射線で照射する前に、前記原材料粉末を予備加熱する加熱手段(37)を有し、
前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、前記原材料粉末の予備加熱温度を調整するように、前記加熱手段(37)を制御するように適合されたものであることを特徴とする請求項1から請求項4のいずれか一項に記載の装置。 - 前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を該ワークピースの異なる領域間で異なるように調整するために、前記原材料粉末の結晶化の挙動に依存して、前記粉末塗布手段(14)と前記照射手段(18)の作動を制御するように適合されたものであることを特徴とする請求項1から請求項5のいずれか一項に記載の装置。
- 前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースを得るために、前記原材料粉末の結晶化の挙動に依存して、前記粉末塗布手段(14)と前記照射手段(18)の作動を制御するように適合されたものであり、
前記ワークピースは、外殻領域に実質的に多結晶球状晶子の微細構造を有し、かつ、内部の芯領域に実質的に単結晶又は指向的/樹枝状晶的に凝固した微細構造を有することを特徴とする請求項1から請求項6のいずれか一項に記載の装置。 - 三次元ワークピースの製造方法であって、
粉末塗布手段(14)によってキャリア(16)上に原材料粉末を塗布する工程と、
照射手段(14)によって前記キャリア(16)上に塗布された前記原材料粉末を電磁放射線又は粒子放射線で選択的に照射する工程と、
累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、制御ユニット(38)によって、前記原材料粉末の結晶化の挙動に依存して、前記粉末塗布手段()と前記照射手段(14)の作動を制御する工程とを有することを特徴とする方法。 - 前記照射手段(18)の少なくとも一つの放射源(24)によって放出される放射ビームを、前記照射手段(18)の少なくとも一つの光学ユニット(28)によって誘導すること、及び、処理することの少なくともいずれか一方を行うことを特徴とする請求項8に記載の方法。
- 前記制御ユニット(38)は、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのビームサイズ、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのビームプロファイル、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのスキャンスピード、
前記キャリア(16)上に塗布された前記原材料粉末上に照射される放射ビームのスキャンパターン、及び、
前記放射源(24)の出力の少なくとも一つを調整するように、前記放射源(24)及び前記光学ユニット(28)の少なくともいずれか一方を制御することを特徴とする請求項9に記載の方法。 - 前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、前記キャリア(16)上に塗布される原材料粉末層の厚さを調整するように、前記粉末塗布手段(14)を制御することを特徴とする請求項8から請求項10のいずれか一項に記載の方法。
- 前記原材料粉末を電磁放射線又は粒子放射線で照射する前に、前記原材料粉末を加熱手段(37)によって予備加熱し、
前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を調整するために、前記原材料粉末の結晶化の挙動に依存して、前記原材料粉末の予備加熱温度を調整するように、前記加熱手段(37)を制御することを特徴とする請求項8から請求項11のいずれか一項に記載の方法。 - 前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースの微細構造を該ワークピースの異なる領域間で異なるように調整するために、前記原材料粉末の結晶化の挙動に依存して、前記粉末塗布手段(14)と前記照射手段(18)の作動を制御することを特徴とする請求項8から請求項12のいずれか一項に記載の方法。
- 前記制御ユニット(38)が、累積的な積層造形法によって前記原材料粉末から作製されるワークピースを得るために、前記原材料粉末の結晶化の挙動に依存して、前記粉末塗布手段(14)と前記照射手段(18)の作動を制御し、
前記ワークピースは、外殻領域に実質的に多結晶球状晶子の微細構造を有し、かつ、内部の芯領域に実質的に単結晶又は指向的/樹枝状晶的に凝固した微細構造を有することを特徴とする請求項8から請求項13のいずれか一項に記載の方法。 - 請求項8から請求項13のいずれか一項に記載の方法で製造したワークピースであって、該ワークピースは特に、少なくとも一領域において、実質的に単結晶又は指向的/樹枝状晶的に凝固した微細構造を示すことを特徴とするワークピース。
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CN105026076A (zh) | 2015-11-04 |
EP2961549B1 (en) | 2021-03-17 |
CN105026076B (zh) | 2017-06-09 |
WO2014131444A1 (en) | 2014-09-04 |
EP2961549A1 (en) | 2016-01-06 |
US20160008922A1 (en) | 2016-01-14 |
US10625374B2 (en) | 2020-04-21 |
JP6200969B2 (ja) | 2017-09-20 |
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