METHOD OF ROLLING RAILS Russian patent published in 2018 - IPC B21B1/08 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of rolling rails. Method includes rolling in reversible douche crane stands rail rolling and its further rolling in a continuously-reversible group of stands consisting of two universal four-high stands, located between them an auxiliary stand duo and a three-roll universal finishing stand. Stabilization of the rolling process in the continuously-reversible group of stands of the rail-mill rolling mill is ensured by the fact, that the first pass is made with the use of an intermediate stand duo and the second – in the main rolling direction of the universal four-high stand, second pass is made using two four-roll stands and an auxiliary stand duo between them, third pass is made using the first four-roll, auxiliary and finishing three-roll universal stand, while in the course of rolling in each caliber of the continuously-reversible group, the extension of the rail neck is increased by an amount calculated from mathematical expressions, depending on the compression of the neck in this cage and other characteristics of the focus of deformation.

EFFECT: stabilization of the rolling process in the continuously-reversible group of stands of the rail-mill rolling mill is ensured.

1 cl, 7 dwg