Composition and method for metal surface refinement
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United States of America Patent
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Nov 10, 1987
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N/A
app pub date -
Nov 20, 1986
filing date -
Nov 20, 1986
priority date (Note) -
Expired
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Abstract
A composition for use in the mass finishing of metal surfaces of objects, normally in a vibratory finishing process, utilizes the combination of oxalic acid, sodium nitrate, and hydrogen peroxide. The maximum concentration of the latter is limited to a value at which excessive dissolution of metal and pitting of the surface are avoided while, at the same time, cooperating with the nitrate to effect a substantial increase in the processing rate. Highly refined surfaces are achieved with the process in relatively short periods of time.
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