Method for making lithoplate having improved grainability
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United States of America Patent
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Jan 5, 1993
Grant Date -
N/A
app pub date -
Jul 1, 1991
filing date -
Jul 1, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of treating an ingot to be made into lithoplate. The method also includes (a) providing a non-heat treatable aluminum alloy containing magnesium; (b) homogenizing said alloy; (c) rolling said alloy to form a sheet or plate; (d) heating said sheet or plate for a temperature and time sufficient to permit magnesium to migrate to the surface of said metal; and (e) cold rolling said sheet or plate stock to a finished gauge workpiece.
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