FIELD: metallurgy.
SUBSTANCE: invention relates to the field of metal forming and can be used, in particular, for the manufacture of forged products with a variable cross-section along the length, curved and twisted in space. Through the entire length of the tube of square cross-section on its two opposite sides form the stiffening ribs by rolling inside the wall part. One end of said pipe is deformed along the untwisted sides and inserted into the groove of the bending device for bending it along the untwisted sides. Additionally, before alignment, it is aligned diagonally.
EFFECT: improved quality of products.
1 cl, 2 dwg
