FIELD: machine building.
SUBSTANCE: method includes formation in the product of catch with sharp and cone areas, and further draft through the monolith die block. The method is performed by optimization of the inclination angle of the die block making the work channel, specified by the mathematical equation considering such parameters as internal friction coefficient in deformation area, length of deformation area, length of drawing cylinder of the die block, deformation resistance of the material of the draft blank, stress of back tension, reduction ratio.
EFFECT: reduced draft stress and process power consumption.
2 cl, 1 dwg
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