Cooling drum for continuously casting thin cast piece and fabricating method and device therefor and thin cast piece and continuous casting method therefor
US6896033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2001 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/5737
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Dimples, preferably 40 to 200 μm in average depth and 0.5 to 3 mm in diameter of circle equivalent, are formed on the peripheral surface of a cooling drum, adjacent to each other at the rims of the dimples; and fine humps (preferably, fine humps 1 to 50 μm in height and 5 to 200 μm in diameter of circle equivalent on the surfaces of the dimples and/or fine humps 1 to 50 μm in height and 30 to 200 μm in diameter of circle equivalent at the rims of the dimples), fine holes (preferably, fine holes 5 μm or more in depth and 10 to 200 μm in diameter of circle equivalent), or fine unevenness (preferably, fine unevenness 1 to 50 μm in average depth and 10 to 200 μm in diameter of circle equivalent) are formed at the rims and/or on the indented surfaces of said dimples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.