FIELD: metallurgy.
SUBSTANCE: in tape out of amorphous alloy based on iron, in which width is 220-1000 mm, thickness is 0.02-0.03 mm, transverse tolerance of thickness is below +/-0.002 mm, lamination factor is over 0.84, magnetic induction of saturation is over 1.5 T, losses in iron are below 0.20 W/kg under conditions when frequency is 50 Hz, and maximum magnetic induction is 1.3 T, and excitation power is below 0.50 VA/kg. Invention also relates to the method of manufacturing of the wide tape, and to the accepted method of quick cooling under single roller diagram, when width of the nozzle slot is 0.4-0.7 mm, transverse tolerance of the nozzle slot width is below +/-0.05 mm, the transverse tolerance for planeness of the cooling roller (4) is below 0.02 mm, and surface roughness Ra is below 0.0005 mm.
EFFECT: improved manufacturing method.
11 cl, 5 dwg, 1 tbl
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