METHOD TO PRODUCE BENT SHAPES OF ROLLING Russian patent published in 1995 - IPC

FIELD: rolling production. SUBSTANCE: multipass bending under of shape flat members is exercised with simultaneous radial and tangential pressing of bending places. At least one of bending place of shape simultaneously with pressing is being shaped with constant from pass to pass radius. Value of the radius is equal to minimum allowed from condition to prevent cracks formation. One of edges of shaped area of bending place in series from pass to pass is being shifted along line, connecting edge of strip with its middle. In one of separate cases inner edge of shaping area is shifted in direction from the edge of the strip to its middle. In another case outer edge of shaping area is shifted from the strip middle to its edge. EFFECT: method to produce bent shapes of rolling is used in rolling production. 3 cl, 3 dwg