Hydrofluosilicic acid as a cap and can etchant
Description:
Aluminum caps and cans are thoroughly cleaned, before being used to can slugs, to insure wetting of the metal surfaces by molten AlSi in the canning pot. An acid bath is used, as part of the cleaning operations to remove surface oxide and other surface films from the metal. Two acid solutions are authorized in the standard operating procedure; a 20% phosphoric acid solution for etching both caps and cans, and a 1% hydrofluosilicic acid solution to be used for caps only. It is desired to determi…
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Date:
March 17, 1953
Creator:
Dixon, D. S.
Item Type:
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Report
Partner:
UNT Libraries Government Documents Department