METHOD FOR STRAIGHTENING FLANGED SHAPES Russian patent published in 2003 - IPC

FIELD: rolled stock production, possibly continuous straightening of flanged shapes such as rails in roller type straightening machines. SUBSTANCE: method comprises steps of acting upon flange of shape by sign-variable efforts applied in staggered fashion in one plane normally relative to surface of flange; applying said efforts along width of flange in two zones arranged symmetrically relative to symmetry axis of flange; selecting spacing L between said zones according to next condition 0,5β<L<1,5B, where B - thickness of web of flanged shape. EFFECT: enhanced quality and increased useful life period of straightened shapes. 2 cl, 1 dwg