FIELD: performing operations.
SUBSTANCE: invention relates to calcium foil cold rolling. Cold multipass rolling by total reduction of 65-80 % of sheet blank from chemically pure calcium metal is performed in the medium of dried air with relative humidity of 150 ppm to produce 0.1mm-thick foil. At cold rolling process lubricant is used in the form of kerosene, and cold rolling is performed without preliminary and intermediate heating, annealing and etching.
EFFECT: productivity of cold rolling of calcium foil is increased by eliminating preliminary and intermediate heating, annealing and etching.
1 cl, 1 dwg
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