MANUFACTURING METHOD OF IMPELLER

To provide a manufacturing method of a fluid machine component capable of improving manufacturing efficiency.SOLUTION: A manufacturing method of a fluid machine component is a manufacturing method of a fluid machine component for manufacturing a fluid machine component comprising multiple blades whi...

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Hauptverfasser: ISHIMARU TATSUYA, MOTOMURA KOZO, BESSHO YUKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a manufacturing method of a fluid machine component capable of improving manufacturing efficiency.SOLUTION: A manufacturing method of a fluid machine component is a manufacturing method of a fluid machine component for manufacturing a fluid machine component comprising multiple blades which are disposed while being spaced apart from each other in a circumferential direction. The manufacturing method includes the steps of: combining a first core molding die (31) and a second core molding die (32), forming a cavity (33) between the first core molding die (31) and the second core molding die (32), and disposing multiple blade models (34) in the cavity (33); filling the cavity (33) between the first core molding die (31) and the second core molding die (32) with core sand; and curing the core sand to provide a core, and then extracting the core from the first and second core molding dies (31 and 32). The blade model (34) is at least partially formed in the same shape as the blade and has flexibility.SELECTED DRAWING: Figure 4 【課題】製造効率を向上させることができる流体機械用部品の製造方法を提供する。【解決手段】流体機械用部品の製造方法は、周方向に間隔をあけて配置された複数の羽根板を備える流体機械用部品を製造する流体機械用部品の製造方法である。この製造方法は、第1中子成形型(31)と第2中子成形型(32)とを組み合わせて、第1中子成形型(31)と第2中子成形型(32)との間にキャビティ(33)を形成すると共に、このキャビティ(33)に複数の羽根板模型(34)を配置する工程と、第1中子成形型(31)と第2中子成形型(32)との間のキャビティ(33)に中子砂を充填する工程と、中子砂を硬化させて中子にした後、第1,第2中子成形型(31,32)から中子を取り出す工程とを備える。羽根板模型(34)は、少なくとも一部が羽根板と同一形状に形成され、可撓性を有する。【選択図】図4