FIELD: technological processes.
SUBSTANCE: invention relates to a rolling production and can be used to produce trapezoidal profiles serving, in particular, as preforms for drawing collector strips used in the production of DC electric machines. Method includes rolling a rectangular blank in rolls with a wedge-shaped roll gap.
EFFECT: exclusion of the formation of a rippling profile that hinders the further rolling of the trapezoidal profiles, their transportation and inspection in coils, is provided by the fact that an intermediate step profile of the workpiece is formed by rolling with regulated compression in a cage with stepped rollers with the subsequent production of a trapezoidal profile by rolling an intermediate step profile in the rolls of a finishing stand with a wedge-shaped roll gap.
1 cl, 3 dwg
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