Method for the production of a continously-cast precursor
US6857465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2001 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Mar 23, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing a continuous-casting plant for producing these products and a submerged nozzle therefor and a continuously cast primary product, in particular broad slabs, having a thickness of the primary product D>100 mm and a width of the primary product B=2700 mm to 3500 mm at a casting rate vc<2 m/min in a continuous-casting plant. To achieve uniform solidification conditions for the cast strand and uniform melting and distribution conditions for the casting powder, molten material leaves the submerged nozzle through opposite outlet openings with a momentum which is directed toward the narrow side walls a mold, and for a defined width:thickness ratio of the primary product, as a function of the ratio of the velocity of the molten material in the core cross section of the submerged nozzle (vk) to the casting rate (vc), design values for the width (b) of the submerged nozzle and the height (h) of the lateral outlet opening of the submerged nozzle are selected in such a way that a uniform strand shell is formed in the casting direction and peripheral direction along the wide side walls and narrow side walls of the permanent mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.