Apparatus and method for bottom casting of molten steel
US6223806A · kind A · utility
Inventors
Key dates
| Filing date | Apr 5, 2000 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Apr 5, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A bottom casting apparatus comprises a pouring pipe, a stool, molds, and runners, wherein the runner satisfies the following equations (1) and (2) and a gap formed between a side wall of a groove for a runner provided in the stool and a runner brick is filled with heat resisting granules, EQU A-D.ltoreq.D(Z/100)+2.5 (mm) (1) EQU A-D>B-E>0 (2) where, A and B are widths (mm) at an upper portion and a bottom portion of the groove, respectively, D and E are widths (mm) at an upper portion and a bottom portion of the runner brick disposed within the groove, respectively, and Z is a mean coefficient of linear expansion (%) of the runner brick in the temperature range of a room temperature to 1000.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.