SECONDARY COOLING METHOD AND SECONDARY COOLING DEVICE OF CONTINUOUS CASTING MACHINE
- 申请公布号：
- JP2014014854(A)
- 申请号：
- JP20120155341
- 申请日期：
- 2012.07.11
- 申请公布日期：
- 2014.01.30
- 申请人：
- NIPPON STEEL & SUMITOMO METAL
- 发明人：
- KITADA HIROSHI
- 分类号：
- B22D11/16;B22D11/124;B22D11/22;B22D46/00
- 主分类号：
- B22D11/16
- 摘要：
- PROBLEM TO BE SOLVED: To provide a secondary cooling control method of a continuous casting machine by which control accuracy of surface temperature of a cast metal.SOLUTION: The secondary cooling control method of the continuous casting machine is provided in which the temperature and the solid phase ratio of a cast metal cross section are estimated by solving a heat conduction equation, a heat transfer coefficient model parameter is corrected by using a difference between the measured temperature of the cast metal and the estimated temperature of the cross section, the temperature and the solid phase ratio of the cross section at the point of time when the cross section existing in a prescribed position of respective cooling zones at the present time reaches a downstream side prescribed position are predicted, a coefficient related to a change quantity of a spray cooling water quantity is obtained, the reference temperature related to a surface temperature target value of the cast metal is obtained, an optimal value of a change quantity for changing the spray cooling water quantity into a step shape is calculated by obtaining an optimal solution of the optimization problem, and a change in the spray cooling water quantity for adding the optimal value of the change quantity to the spray cooling water quantity of the respective cooling zones of the present time is repeated, and thus the surface temperature of the cast metal is controlled to a target value during a period while the respective cross sections move up to a control object outlet of secondary cooling in the optional time in casting.
Copyright Notice © 2009-2024 传众 版权所有