Method for producing non-oriented steel sheets
US5082510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1989 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Mar 27, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing non-oriented electrical steel sheets comprising the steps of: PA0 making steel ingots comprising contents of: PA0 0.01 wt % and less C, 0.003 wt % and less N, 0.1 to 1.0 wt % Mn and 1.7 wt % and less Si; PA0 Si and Al satisfying the formulas of: PA0 (Al %).ltoreq.0.69 (Si %).sup.2 -2.29 (Si %)+1.90; and PA0 (Al %).gtoreq.0.10 (Si %).sup.2 -0.35 (Si %)+0.3, providing that (Si %) represents wt % Si content, and that (Al %) represents wt % Al content; PA0 other contents being Fe and impurities inevitable; PA0 hot-rolling slabs of the steel ingots at finishing temperature of 700.degree. to 900.degree. C. into hot-rolled steel strips to coil the hot-rolled steel strips; and PA0 cold-rolling the hot-rolled steel strips into cold-rolled steel strips, followed by annealing the cold-rolled strip sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.