Method and device for regulating the level of liquid metal in a mold for the continuous casting of metals
US5605188A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1995 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Oct 23, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/205
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The subject of the invention is a method for regulating the level of the meniscus (13) of the liquid metal in a mold (5) of a machine for the continuous casting of metals, according to which method the electrical signals supplied by at least one pair of sensors (17, 18) overhanging said meniscus are picked up, said signals being a function of the respective distances (h.sub.1, h.sub.2) between said sensors and said meniscus, these two signals are combined so as to obtain a single signal representing an imaginary level of said meniscus and said signal is sent to means (15, 24) for controlling a device (14) for regulating the flow rate of metal penetrating the mold, so that said control means actuate said device so as to bring said imaginary level of said meniscus back to a predetermined set value (h), wherein each signal coming from said sensors is conditioned, eliminating therefrom the oscillations having both a frequency greater than a threshold (F) and an amplitude less than a threshold (D). The invention also relates to a mode of combining said signals and a device for implementing said method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.