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Home / R&R Academy / Defect Analysis / Positive Metal Defects / Spalling on Edges

Spalling on Edges


Spalling on edges presents as rough filling in the corners. This defect indicates that there was a poor bond between the first coats and the backup shell in these corners; causing primary coats to pop off (areas of primary coats popping off of edges). 

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The causes of this defect are evident in the shell portion of the process. To cure these causes, R&R recommends taking the following actions.

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