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ヘッド表面のひび割れ

2017-05-04View Original

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封頭の表面に亀裂が許されないという規定は、どの規格に記載されているのでしょうか。具体的にはどのように書かれていますか?ありがとう
Reply #22017-05-04
これは規格で定める必要はないでしょう。どんな構造部品でも、ひび割れがあってはなりません
Reply #32017-05-04
これには標準規定はなく、常識的なことで、どんな材料や成形部品の表面にも亀裂があってはならない。

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