FIELD: rolling mill products.
SUBSTANCE: invention can be used when rolling an asymmetric angular profile, mainly for railway use, such as a counter rail angle. The method includes multi-pass reduction of the heated billet in rolls with grooves, the initial formation of a profile in asymmetric box grooves and after tilting by 90°, rolling in alternating open and closed shaped preparatory grooves and the final formation of the profile. The final shaping of the profile is carried out in a prefinishing caliber, which is a control one, and rotated by 45° relative to the finishing and previous calibers with the location of the caliber connectors in the surfaces forming a radius (R10) conjugated with an 8% caliber issue and a radius (R3) 5 mm conjugated with the contact surface with the rail base, with a roll gap of 5-8 mm.
EFFECT: increase in the stability and quality of rolled products.
1 cl, 3 dwg
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