FIELD: technological processes.
SUBSTANCE: invention relates to metal forming, namely to methods for metal strengthening in process of treatment. Billet is placed in the first channel of device. The second channel is arranged at the angle to the first channel. Channels have identical cross section that equals cross section of billet. Then the billet is moved to the second channel. Angular pressing is carried out in the area of channels crossing. Billet has a section in the middle part, which has reduced cross section. Ratio of mentioned section height to its minimum cross size makes not more than 2-2.5.
EFFECT: production of material gradient in structure and properties.
2 cl, 1 dwg
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