Method for cleaning aluminum articles
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United States of America Patent
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-
Jun 2, 1981
Issued Date -
N/A
app pub date -
Oct 25, 1978
filing date -
Jun 3, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An aluminum article is cleaned to prepare it for plating by soaking it in an aqueous solution containing sodium metasilicate, sodium pyrophosphate and sodium tetraborate at 140.degree.-180.degree. F. The article is then washed by a power spray of a second solution, constituted the same as the first cleaning solution, at 110.degree.-130.degree. F. The article is subsequently rinsed with water and immersed in an aqueous nitric acid solution.
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