ARTICLE DRAWING METHOD Russian patent published in 1999 - IPC

Abstract RU 2126731 C1

FIELD: manufacture of rods and wire by drawing. SUBSTANCE: method comprises steps of deforming metal in cone drawing dies at using technological lubricant and determining axial residual stresses in surface layer of article. Drawing degree for one pass is determined according to relation , where - relative axial residual stress in surface layer of article; - relative stress of countertension; σs - deformation resistance of material of drawn article; f - friction factor in deformation zone: αn - conicity angle of drawing die. EFFECT: enhanced strength of article at drawing process. 1 ex

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RU 2 126 731 C1

Authors

Kolmogorov G.L.

Mel'Nikova T.E.

Kurapova N.A.

Dudina N.M.

Ivanov V.A.

Fedotov N.A.

Dates

1999-02-27Published

1998-04-27Filed