JP2007098475A - セラミック鋳造中子を製造する方法並びに関連する物品及びプロセス - Google Patents
セラミック鋳造中子を製造する方法並びに関連する物品及びプロセス Download PDFInfo
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Abstract
【解決手段】この鋳造中子は、事前選択した形状を有しかつ複数の平行断面として特徴付けられる。各断面は、事前選択したパターン及び厚さを有する。本方法は、レーザ圧密化プロセスにおいてレーザビーム(132)を用いてセラミック中子材料(106)を溶融するステップと、中子の第1の断面のパターンで第1の層(116)を形成するように溶融材料を堆積させて、第1の堆積層(116)の厚さが第1の断面の厚さに対応するようにするステップとを含む。第2の層(140)が同様な方法で形成され、その後、中子が完成するまで付加的な層が形成される。セラミック中子を使用してインベストメント鋳造によってガスタービン部品を製造する方法と同様に、このプロセスを用いて既存のセラミック中子の形状を修正する方法についても説明する。関連する物品及びプロセスについても説明する。
【選択図】 図2
Description
冷却空気は、チャネルを通って流れ、次に通常は翼形表面における冷却孔の構成を通して吐出される。従って、中子は、タービンブレードの特徴形状を精密に複製する相反特徴形状を含まなければならない。多壁構造を備えたエンジンブレード設計の実例は、米国特許第5,931,638号及び第6,2543,34号に見ることができる。
102 供給材料容器
104 供給チャンバ
106 セラミック中子材料
108 粉末送給ノズル
112、122 導管
114 基体
116 第1の層
130 レーザ
132 レーザビーム
140 第2の層
142 可動支持体
144、148、150 プロセッサ
146 装置支持体
Claims (10)
- 事前選択した形状を有しかつその各々が事前選択したパターン及び厚さを有する複数の平行断面として特徴付けられたセラミック鋳造中子を製造する方法であって、
(i)レーザビーム(132)を用いてセラミック中子材料(106)を溶融しかつ中子の第1の断面のパターンで第1の層(116)を形成するように前記溶融材料を堆積させて、前記第1の堆積層の厚さが前記第1の断面の厚さに対応するようにするステップと、
(ii)レーザビーム(132)を用いてセラミック中子材料(106)を溶融しかつ物品の第2の断面のパターンで第2の層(140)を形成するように前記第1の堆積材料層(116)上に少なくとも部分的に位置させて前記溶融材料を堆積させて、前記第2の堆積層の厚さが前記第2の断面の厚さに対応するようにするステップと、次に、
(iii)レーザビーム(132)を用いてセラミック中子材料(106)を溶融しかつ中子の対応する断面のパターンで一連の層を形成するように下にある断面上に少なくとも部分的に位置した一連の断面の少なくとも1つとして前記溶融材料を堆積させて、前記中子が完成するまで該溶融材料を堆積させかつ該一連の層を形成するようにするステップと、
を含む方法。 - 中子材料(106)を溶融しかつ前に堆積させた中子材料を覆って前記溶融材料を堆積させる各ステップの間に、前記前に堆積させた材料の一部分が溶融されて前記層間に溶接ボンドを形成するようになる、請求項1記載の方法。
- 前記セラミック中子材料が、アルミナ、ジルコニア、シリカ、イットリア、マグネシア、カルシア、セリア及びその組合せからなる群から選択される、請求項1記載の方法。
- 前記セラミック鋳造中子が、少なくとも1つの開口を含む、請求項1記載の方法。
- 前記セラミック鋳造中子が、タービンエンジン部品のチャネルを定めるパターンで複数の開口を含む、請求項4記載の方法。
- 前記タービンエンジン部品が、前記セラミック鋳造中子を使用することを含む鋳造プロセスで形成される、請求項5記載の方法。
- タービンエンジンブレードのインベストメント鋳造に適したセラミック鋳造中子を製造する方法であって、
その中に組み込まれた事前設定した中子のパターンに従ってセラミック材料を層毎に堆積させることができるレーザ圧密化システム(100)にセラミック中子材料(106)を送給するステップ、
を含む方法。 - セラミック鋳造中子の形状を修正する方法であって、
指定したパターンに従ってレーザ圧密化プロセスによって鋳造中子の少なくとも一部分に対して該中子の形状を修正するように付加的なセラミック材料を加えるステップ、
を含む方法。 - ガスタービンの部品を製造する方法であって、
(a)その中に組み込まれた事前設定した中子のパターンに従ってセラミック材料を層毎に堆積させることができるレーザ圧密化システム(100)にセラミック中子材料(106)を送給することによってセラミック鋳造中子を製造するステップと、次に、前記鋳造中子を熱処理するステップと、
(b)モールド−中子組立体の一部として前記セラミック鋳造中子を使用してインベストメント鋳造プロセスを行って前記ガスタービン部品を形成するステップと、
を含む方法。 - 請求項1の方法によって製造したセラミック鋳造中子。
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Cited By (7)
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JP2009025119A (ja) * | 2007-07-19 | 2009-02-05 | General Electric Co <Ge> | 輪郭測定装置及び動作方法 |
JP2012135803A (ja) * | 2010-12-27 | 2012-07-19 | Kimura Chuzosho:Kk | 複合型の構造体ならびにその構造体を用いる鋳型および鋳造方法 |
JP2013512783A (ja) * | 2009-12-08 | 2013-04-18 | シーメンス エナジー インコーポレイテッド | 中空部品のためのインベストメント鋳造プロセス |
JP2015061731A (ja) * | 2013-08-20 | 2015-04-02 | 三菱重工業株式会社 | レーザ加工方法及びレーザ加工装置 |
JP2016532567A (ja) * | 2013-10-11 | 2016-10-20 | エフエルシー フローキャスティングズ ゲゼルシャフト ミット ベシュレンクテル ハフツングFLC Flowcastings GmbH | 中空の部材の精密鋳造方法 |
KR101763122B1 (ko) * | 2016-05-31 | 2017-08-01 | 한국에너지기술연구원 | 세라믹 코어의 제조방법, 이에 의해 제조된 세라믹 코어, 정밀주조 방법 및 이에 따라 제조된 정밀주조 제품 |
JP2017537251A (ja) * | 2014-10-15 | 2017-12-14 | シーメンス アクチエンゲゼルシヤフトSiemens Aktiengesellschaft | ガスタービンエンジンで使用可能な構成部品を形成するためのセラミック鋳型を有するダイカストシステム |
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US7938168B2 (en) * | 2006-12-06 | 2011-05-10 | General Electric Company | Ceramic cores, methods of manufacture thereof and articles manufactured from the same |
GB2444483B (en) | 2006-12-09 | 2010-07-14 | Rolls Royce Plc | A core for use in a casting mould |
DE102008021507A1 (de) * | 2008-04-30 | 2009-11-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von keramischen Objekten mittels selektiven Laserschmelzens |
EP2292357B1 (en) | 2009-08-10 | 2016-04-06 | BEGO Bremer Goldschlägerei Wilh.-Herbst GmbH & Co KG | Ceramic article and methods for producing such article |
US20130026338A1 (en) * | 2011-07-28 | 2013-01-31 | Lea Kennard Castle | Rapid casting article manufacturing |
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