Method for making lithoplate having improved grainability

Details Method for making lithoplate having improved grainability Method for making lithoplate having improved grainability

1991-07-01

1993-01-05

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148439, 148440, 148695, C22F 104

Patent

active

051767635

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.

REFERENCES:
patent: 4301229 (1981-11-01), Sakaki et al.
patent: 4377447 (1983-03-01), Bednarz
patent: 4600482 (1986-07-01), Mohr
patent: 4902353 (1990-02-01), Rooy et al.
patent: 5028276 (1991-07-01), Byrne et al.

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