Annealing facility and method for producing grain-oriented electrical steel sheet
By adopting a cold rolling process with fast cooling and high pressure under the annealing equipment, combined with the special design of the annealing equipment, the problem of difficulty in producing an oriented electromagnetic steel plate with a thickness of 0.35 mm in primary cold rolling in the prior art is solved, and good magnetic characteristics and production efficiency are achieved.
Patent Information
- Application Number
- CN202380059585.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-08-22
- Filing Date
- 2023-08-07
- Publication Date
- 2025-03-28
AI Technical Summary
The prior art is difficult to achieve the production of an oriented electromagnetic steel plate with a thickness of 0.35 mm in a single cold rolling, and the steel plate is prone to breaking under high pressure.
By adopting a more active carbon control method in the annealing equipment, including rapid cooling to below 120°C before cold rolling, and cold rolling without causing a temperature rise, using a cold rolling process with a high pressure rate of more than 89%, combined with the special design of the annealing equipment such as a large diameter conveying roller and a high-efficiency cooling system, the thickness and magnetic characteristics requirements of the steel plate are achieved.
The production of oriented electromagnetic steel plates with a thickness of 0.35 mm in one cold rolling is achieved, and good magnetic characteristics are maintained under high pressure, reducing the risk of steel plate fracture.