Method of rolling rails

Details Method of rolling rails Method of rolling rails

B - Operations, Transporting

21

B

80/23, 80/51

B21B 1/08 (2006.01) B21B 1/12 (2006.01)

Patent

CA 1227957

Abstract A rail is rolled from a hot-rolled bloom having a square or rectangular cross section by a method which comprises the steps of breakdown rolling, universal rolling, which is effected by allowing the bloom to travel through a plurality of stands making only a single pass on each stand, base-wheel rolling, head- wheel rolling and edging. The bloom is broken down into a substantially H-shaped beam blank whose cross section is symmetircal with respect to the center line of its web. In the base-wheel rolling, the flanges of the blank corresponding to the head and base of the rail are respectively rolled widthwise and thickness- wise in three or more passes using a pair of horizon- tal rolls and a vertical roll, respectively.

431478

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