ALUMINUM STRUCTURAL BODY ANODIZING METHOD AND ITS ANODIZER

Especially, the entire inner surfaces of the aluminum fins arranged into a multilayer structure provided in a structural body are effectively anodized even if the density of aluminum fins is relatively high. An inner surface anodizing method for a structural body (11) has therein at least segmentali...

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Hauptverfasser: KIKUCHI, SATORU, HIROHARA, TSUYOSHI, IGARASHI, HIDEYUKI, TRAN, TAN FON
Format: Patent
Sprache:eng ; fre ; jpn
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Zusammenfassung:Especially, the entire inner surfaces of the aluminum fins arranged into a multilayer structure provided in a structural body are effectively anodized even if the density of aluminum fins is relatively high. An inner surface anodizing method for a structural body (11) has therein at least segmentalized aluminum fins (13) to be anodized of a multilayer structure and passage spaces (14) which are defined between the aluminum fins and through which an electrolyte can flow in a desired direction. By performing anodization while forcing an electrolyte to flow through the passage spaces (14) between the aluminum fins (13) of the structural body (11), a uniform oxide film is formed over the entire inner surfaces of the aluminum fins (13). Especially, the entire inner surfaces of the aluminum fins arranged into a multilayer structure provided in a structural body are effectively anodized even if the density of aluminum fins is relatively high. An inner surface anodizing method for a structural body 11 has therein at least segmentalized aluminum fins 13 to be anodized of a multilayer structure and passage spaces 14 which are defined between the aluminum fins and through which an electrolyte can flow in a desired direction. By performing anodization while forcing an electrolyte to flow through the passage spaces 14 between the aluminum fins 13 of the structural body 11, a uniform oxide film is formed over the entire inner surfaces of the aluminum fins 13. Il est possible, grâce à ce procédé, d'anodiser de manière efficace la totalité des surfaces intérieures d'ailettes en aluminium agencées en une structure multicouche formée dans un élément structural et ce, même si la densité des ailettes en aluminium est relativement élevée. Cette invention porte sur un procédé d'anodisation de surfaces interne d'un élément structural comportant des ailettes en aluminium au moins segmentées (11) agencées en une structure multicouche ainsi que des espaces délimitant des passages (14) entre lesdites ailettes et par lesquels un électrolyte peut s'écouler selon la direction désirée. Ce procédé d'anodisation consistant à provoquer un écoulement forcé d'un électrolyte dans les passages susmentionnés (14) entre les ailettes (13) de l'élément structural (11) permet de former une couche uniforme d'oxyde sur la totalité des surfaces intérieures des ailettes en aluminium (13).