Method for maintaining the optimal amount of inert gas being injected into cast steel
US12083590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2020 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Sep 8, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/117
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for maintaining the optimal argon injection flow rate which will result in production of steel slab of a chosen alloy having optimal cleanliness. The steel is cast using an argon injected slide gate. The selected steel has a known optimal argon injection flow rate Qb* for casting steel of optimal cleanliness. The method involves calculating the present steel pressure and determining the present injection flow rate conductance Gb′ of the argon injected slide gate during either of 1) a steel pressure change event; or 2) an argon flow change event. The measurements are used to calculate present argon pressure required to insure the required injection flow rate of argon into the steel for optimal cleanliness of the cast steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.