FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be used in hardening of wire by intensive working out of metal structure by plastic deformation. Wire is subjected to bending cycles to achieve the required level of hardening. Each cycle includes a stage of wire winding on mandrel with production of spiral and stage of spiral straightening by its unwinding from mandrel. Unwinding is performed with tension of the wire.
EFFECT: possibility of accumulation of deformation without wire elongation.
4 cl, 11 dwg, 7 ex
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