Method for controlling the shape of an intermediate coil in a hot coil box and related device
By identifying the inner ring eye status of the intermediate billet in the hot rolling box and formulating a bending roll gap adjustment strategy, the problem of poor roll shape control in traditional hot rolling boxes was solved, achieving precise roll shape control and improved production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHOUGANG QIANAN IRON & STEEL CO LTD
- Filing Date
- 2024-12-04
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional hot rolling boxes are difficult to adapt to the needs of different steel grades and specifications in roll shape control, resulting in poor roll shape or roll failure, and relying on experimental adjustment of roll gap or replacement of roll assembly is not effective.
By acquiring the inner ring eye state of the intermediate roll, the eye state is identified using the rate of curvature change and symmetry parameters. A bending roll gap adjustment strategy is formulated, and the roll shape control is optimized by combining a self-learning mechanism.
It achieves precise control of coil shape, improves production efficiency, reduces the impact of coil defects on subsequent finishing rolling processes, extends the life of key components, and reduces the need for manual intervention.
Smart Images

Figure CN119566070B_ABST