JP6227206B1 - 放電表面処理電極の製造方法および皮膜体の製造方法 - Google Patents
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Abstract
Description
図1は、本発明の実施の形態1にかかる放電表面処理電極に用いられる造粒粉の断面図である。造粒粉21は、図1に示すように、複数の金属粉末21mを第1の結合剤21bで結合させてまとめた粉末である。なお、以下の説明において、複数の金属粉末を結合剤で結合させてまとめることを造粒という。
図9は、本発明の実施の形態2にかかる放電表面処理電極1Qの製造方法を示すフローチャートである。図10は、実施の形態2にかかる放電表面処理電極1Qの製造工程を示す図である。なお、上記実施の形態1と同様の構成については、同様の符号を付して詳細な説明を省略する。本実施の形態2にかかる放電表面処理電極1Qの製造方法では、第2の結合剤を用いずに造粒粉21の一部を選択的に焼結または仮焼結させて造粒粉21を結合させる。以下に、本実施の形態2にかかる放電表面処理電極1Qの製造方法について詳細に説明する。
図11は、本発明の実施の形態3にかかる放電表面処理電極1Rの製造方法を示す図である。なお、上記実施の形態と同様の構成については、同様の符号を付して詳細な説明を省略する。図11に示すプロセスp41からプロセスp45では、所望のパターン形状で造粒粉21をテーブル10または第1の粉末層11上に供給する。そして、所望のパターン形状で形成された造粒粉21を加熱装置5で加熱して、造粒粉21に含まれる第1の結合剤21bの再溶融後の固化あるいは造粒粉21に含まれる金属粉末21mの焼結または仮焼結によって、造粒粉21同士を結合または金属粉末21m同士を結合させる。なお、造粒粉に向けて第2の結合剤を噴射して造粒粉同士を結合させてもよい。これにより、放電表面処理電極1Rが得られる。本実施の形態3では、所望のパターンの形状を異ならせることで、他の領域と空孔率の異なる領域を有する放電表面処理電極1Rを得ることができる。図11に示す例では、第1の粉末層11で形成される領域よりも、第2の粉末層12で形成される領域のほうが、空孔率が高くなっている。
図12は、本発明の実施の形態4にかかる放電表面処理電極1Sを示す図である。本実施の形態4では、第1の粉末層11に用いられる造粒粉21の粒径d1と、第2の粉末層12に用いられる造粒粉31の粒径d2とを異ならせている。具体的には、造粒粉21の粒径d1よりも造粒粉31の粒径d2のほうが大きくなっている。そして、粒径の大きい造粒粉31が敷き詰められた第2の粉末層12によって形成される領域のほうが、第1の粉末層11によって形成される領域よりも空孔率を高くすることができる。
Claims (11)
- 粉末を敷き詰めて第1の粉末層を形成する第1の敷設工程と、
前記第1の粉末層のうち一部の粉末同士を結合させる第1の結合工程と、
一部の前記粉末同士が結合された粉末層の上に前記粉末をさらに敷き詰めて第2の粉末層を形成する第2の敷設工程と、
前記第2の粉末層のうち一部の粉末同士を結合させて前記粉末の積層体を形成する第2の結合工程と、を備え、
前記積層体の内部に空孔率が他の領域と異なる領域が形成されることを特徴とする放電表面処理電極の製造方法。 - 前記第1の結合工程および前記第2の結合工程において、結合させる前記粉末に向けて選択的に結合剤を噴射することを特徴とする請求項1に記載の放電表面処理電極の製造方法。
- 前記積層体を高温炉に投入して前記粉末同士を焼結または仮焼結させる投入工程をさらに備えることを特徴とする請求項2に記載の放電表面処理電極の製造方法。
- 前記第1の結合工程および前記第2の結合工程において、結合させる前記粉末を選択的に加熱することを特徴とする請求項1に記載の放電表面処理電極の製造方法。
- 前記加熱によって、前記粉末同士が仮焼結または焼結されることを特徴とする請求項4に記載の放電表面処理電極の製造方法。
- 前記粉末は、金属粉末と結合剤が混合された造粒粉末であり、
前記加熱によって前記結合剤が溶融され、溶融された前記結合剤がその後固化することを特徴とする請求項4に記載の放電表面処理電極の製造方法。 - 前記第1の粉末層は、ベースの上に敷き詰められ、
前記第1の結合工程において、前記第1の粉末層と前記ベースとが結合されることを特徴とする請求項1から請求項6のいずれか1つに記載の放電表面処理電極の製造方法。 - 前記第1の粉末層は、ベースの上に敷き詰められ、
前記第1の粉末層のうち前記ベースと接する領域は、前記ベースと結合しない非結合領域または前記ベースへの結合力が他の領域での前記粉末同士の結合力よりも抑えられた低結合領域となることを特徴とする請求項1から請求項6のいずれか1つに記載の放電表面処理電極の製造方法。 - 前記積層体は、前記粉末の積層方向に空孔率が異なる領域を有することを特徴とする請求項1から請求項8のいずれか1つに記載の放電表面処理電極の製造方法。
- 前記積層体は、前記粉末の積層方向と垂直な方向に空孔率が異なる領域を有することを特徴とする請求項1から請求項8のいずれか1つに記載の放電表面処理電極の製造方法。
- 請求項1から請求項10のいずれか1つに記載の放電表面処理電極の製造方法で製造された放電表面処理電極を被加工物と対峙させる工程と、
前記放電表面処理電極に電圧を印加して前記放電表面処理電極と前記被加工物との間に放電現象を発生させて前記被加工物に皮膜を形成する工程とを備えることを特徴とする皮膜体の製造方法。
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PCT/JP2016/089181 WO2018123050A1 (ja) | 2016-12-28 | 2016-12-28 | 放電表面処理電極の製造方法および皮膜体の製造方法 |
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CN111203539B (zh) * | 2020-04-22 | 2020-07-28 | 中国航发上海商用航空发动机制造有限责任公司 | 预制气孔缺陷、内置气孔缺陷的制备方法及预制件 |
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JP6154369B2 (ja) * | 2014-12-19 | 2017-06-28 | トヨタ自動車株式会社 | リチウムイオン二次電池用電極の製造装置 |
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JP2013159818A (ja) * | 2012-02-03 | 2013-08-19 | Eagle Industry Co Ltd | 放電表面処理用電極及び放電表面処理用電極の製造方法 |
JP2013159828A (ja) * | 2012-02-06 | 2013-08-19 | Eagle Industry Co Ltd | 放電表面処理用電極及び放電表面処理用電極の製造方法 |
JP2015140461A (ja) * | 2014-01-29 | 2015-08-03 | 株式会社Ihi | 放電表面処理用の電極及びその製造方法 |
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US10577695B2 (en) | 2020-03-03 |
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