Method and apparatus for rolling rails

Details Method and apparatus for rolling rails Method and apparatus for rolling rails

B - Operations, Transporting

21

B

80/23, 80/51

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

Patent

CA 1224069

ABSTRACT The rail is rolled by following the steps of breakdown, reforming rolling, first and second universal rolling, head-wheel rolling and base-wheel rolling in that order. The reforming rolling is performed using a pair of horizontal rolls formed with a reforming pass and a head-wheel pass and a vertical roll adapted to reduce the base of the rail, with the paired horizontal rolls, together with said vertical roll, shifted and set in such a position where the reforming pass matches the pass line of the first universal rolling. The head-wheel rolling is performed using the same paired horizontal rolls and a vertical roll adapted to reduce the head of the rail, with the paired horizontal rolls, together with said vertical roll, shifted and set in such a position where the head-wheel pass matches the pass line of the second universal rolling. A rail rolling apparatus comprises a breakdown stand, a sizing head-wheel stand comrpising a apir of horizontal rolls formed with a reforming pass and a head-wheel pass, a vertical roll adapted to reduce the base of the rail, a vertical roll adapted to reduce the head of the rail, and mechanism for shifting the rolls, a universal stand, and a base-wheel rolling stand.

431476

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