Slab warpage detection apparatus and method of detecting warpage of slab
AssigneeNippon Steel Corporation
InventorsShuntaro Imai, Ryousuke Takata, Mitsutoshi Jotoku, Hiroaki Uchiyama, Mitsutaka Hattori
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Abstract
Provided is a slab warpage detection apparatus detecting warpage of a slab drawn from a mold in continuous casting equipment. The slab warpage detection apparatus includes a pair of pressing roils that pinches the slab on a rear side of a roll segment, supporting the slab drawn from the mold, in a slab drawing direction, a movement unit that supports the pair of pressing rolls to be movable in a thickness direction of the slab, and a position detecting unit that detects positions of the pressing rolls in the thickness direction of the slab.
Claims8
A slab warpage detection apparatus detecting warpage of a slab drawn from a mold in continuous casting equipment, the slab warpage detection apparatus comprising:
- a pair of pressing rolls that pinches the slab on an exit side of a roll segment supporting the slab drawn from the mold;
- a pair of movement units, each movement unit of the pair of movement units configured to support a respective pressing roll of the pair of pressing rolls, each of the pressing rolls of the pair of pressing rolls configured to be movable in a thickness direction of the slab;
- a position detecting unit that detects positions of each of the pressing rolls in the thickness direction of the slab;
- and
- a control device programmed to:
- receive information of the position of each of the pressing rolls detected by the position detecting unit;
- determine whether an amount of displacement of the positions of each of the pressing rolls in the thickness direction of the slab exceeds a predetermined value;
- and
- adjust pressing forces of the pair of pressing rolls to straighten warpage of the slab in a case where the amount of displacement of the positions of the pressing rolls in the thickness direction of the slab exceeds the predetermined value;
- wherein the movement unit comprises a cylinder and a rod portion disposed to be retractable from the cylinder, and the pressing rolls are provided at a tip of the rod portion,
- wherein the position detecting unit is connected to the control device, and
- wherein the warpage of the slab is straightened by generating a difference between pressing forces of the respective pressing roll of the pair of pressing rolls and applying a bending deformation to the slab.
Dependencies are inferred from the claim text.