METHOD OF MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
N/A
Issued Date -
Nov 7, 2024
app pub date -
May 27, 2022
filing date -
May 27, 2022
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
The present disclosure is to reduce the number of surface defects in a grain-oriented electrical steel sheet. When manufacturing a grain-oriented electrical steel sheet, a steel slab is heated before being subjected to hot rolling. The heating includes a first heating process of heating the steel slab to a temperature of lower than 1300° C., and a second heating process of heating the steel slab to a temperature of 1300° C. or higher, where the time from the end of the first heating process to the start of the second heating process is 20 seconds or longer, the oxygen concentration in the atmosphere in the second heating process is 1.0 vol % or less, and the surface of the steel slab is subjected to water cooling at a cooling rate of 3.0° C./s or higher after the second heating process and before the hot rolling.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully