Method for producing grain-oriented silicon steel sheet
US5855694A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1233
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Production of grain-oriented silicon steel sheet, in which the heating temperature of slabs is as low as that in common steels and good magnetic properties are maintained, without applying a nitriding process. The contents of Al, Se and S substantially satisfy formulae (1) and (2), and both or either of formulae (3) and (4): EQU Al (wt %)!+(5/9){Se (wt %)!+2.47S(wt %)!}.ltoreq.0.027 (1) EQU Se (wt %)!+2.47S (wt %)!.ltoreq.0.025 (2) EQU 0.016.ltoreq.Al (wt %)!+(5/9){Se (wt %)!+2.47 S (wt %)!}(3) EQU 0.010.ltoreq.Al (wt %)! (4) Annealing of the hot rolling sheet is applied at a temperature of about 800.degree. C. or more, and about 1000.degree. C. or below; preferably, cold rolling is applied at about 100.degree. C. or more, using a tandem mill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.