Method of continuously casting austenitic stainless steel
US5775404A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Sep 16, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention proposes a continuous casting method for austenitic stainless steel capable of simultaneously establishing productivity and an excellent surface quality of steel sheet. For this purpose, the invention lies in a method of continuously casting austenitic stainless steel by pouring melt of austenitic stainless steel from a tundish through an immersion nozzle into a continuously casting mold of a continuous slab caster, solidifying it in the mold and continually drawing the resulting slab of given size out from the mold, characterized in that a high-speed continuous casting is carried out so as to satisfy a relation of casting speed, superheating degree of molten steel in the tundish, sectional area of discharge port in the immersion nozzle and slab width represented by the following equation: EQU 0.30.ltoreq.V.sup.0.58 .multidot.W.sup.-0.04 .multidot..DELTA.T.multidot.d.sup.-0.96 .ltoreq.0.85 wherein PA1 V: casting speed (m/min) PA1 W: slab width (mm) PA1 .DELTA.T: superheating degree of molten steel in tundish (.degree.C.) PA1 d: square root of sectional area of nozzle discharge port (mm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.