System and method for rolling tapered slabs
AssigneeSiemens Aktiengesellschaft
InventorsMilton Scott Bouchillon, Dietrich Wohld
Life of this patent
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Abstract
A method and a device are provided for rolling a slab, in particular a slab whose thickness varies over its length, using at least two roll stands with a substantially constant and preferably low tension being maintained in the slab between the first and the second roll stand and with substantially constant exit thickness. Until the desired tension is reached in the slab, the rotational speed in the second roll stand is kept constant and the torque in the first roll stand is controlled so as to build up the desired tension in the slab between the first and the second roll stand. After the desired tension is reached, the rotational speed of the first roll stand and the torque of the second roll stand are kept constant.
Claims10
A method for rolling a slab having a variable thickness along its length using first and second roll stands, comprising the steps of:
- advancing the slab through the first and second roll stands while maintaining a substantially constant and low tension in the slab between the first and second roll stands;
- and
- maintaining a substantially constant thickness of the slab at an output of the first and second roll stands.
A system for rolling a slab having a variable thickness along its length, comprising:
- at least two roll stands;
- and
- means for advancing a slab through the first and second roll stands while maintaining substantially constant slab thickness at outputs of the at least two roll strands.
Dependencies are inferred from the claim text.