FIELD: manufacture of cold bent rolled shapes and electrically welded tubes.
SUBSTANCE: method comprises steps of applying to point of slitting band mutually opposite efforts normal relative to band surface and simultaneously drawing band; before lengthwise drawing of band, notching it along length consisting 20 - 40 values of band thickness; supplying electric current to notched portions of band with electric current intensity providing local heating of band in slitting point up to temperature of melting metal.
EFFECT: enhanced quality of slitting band, lowered labor consumption.
1 dwg, 1 note
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