Method for controlling the level of molten metal for a continuous casting machine
US5913357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Jun 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/181
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In order to control a molten metal level within a mold of a system comprising a liquid core reduction device, while controlling a fluctuation of the molten metal level caused by a change of operational conditions, such as the withdrawal rate, reduction speed, etc., with improvement of the yield rate of product slabs, a method comprises the steps of: (i) estimating a disturbance to the molten metal level, which is caused by a change in operating conditions of a continuous casting machine before changing the operating conditions; (ii) determining an amount of correction of the control signal to eliminate the disturbance, and determining a delay time of the operation of the pouring means in responses to the control signal after correction; and (iii) applying a control signal containing the amount of correction in advance by a period of the delay time prior to the occurrence of a change in operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.