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膨張接合

2017-04-27View Original

Thread Content

GB151に記載されている膨張度とは、膨張接合率のことでしょうか?管板の穴と熱交換管の外壁との隙間寸法は、管板の穴から熱交換管の外径を引いた値でしょうか?拡張溶接検査記録の請求
Reply #22017-04-27
各種材料の膨張接合率 強度膨張接合率 5~8% 6~9% 8~40% 4~6% 軽度膨張接合率 1~2% -------
Reply #32017-04-27
はい、管材の負の偏差も考慮する必要があります。
Reply #42017-04-28
強度膨張の場合は、膨張接合試験を行い、評価用試験片を作成する必要がある。貼り膨らみには要求はない。
Reply #52017-04-28
拡管率には計算式があります。

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