CORROSION ENGINEERING DIGEST
Online ISSN : 1884-1155
Print ISSN : 0010-9355
ISSN-L : 0010-9355
Studies on the Extraordinary Corrosion of the Copper Tubes of U-fin Heater
Kazuyoshi OkanoYoshiharu KitamuraReijj Takahashi
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1955 Volume 4 Issue 1 Pages 27-30

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Abstract
An U-fin heater used as an air heater for drying powder materials was damaged due to corrosion of the heating copper tubes. As the results of experiments, it was concluded that the corrosion was caused by the adhesion of solder to inner surface of the copper tube. In order to remove the solder, some methods both by chemicals and by electrolysis were examined. Although we have not yet found a method, which removes the solder completely and not affects copper tubes, we obtained some promising method, especially one by chemicals.
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© Japan Society of Corrosion Engineering
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