Title:
PRODUCTION OF ELECTRICAL STEEL SHEET FOR STATIC MACHINE HAVING EXCELLENT MAGNETIC CHARACTERISTICS IN TWO DIRECTIONS
Document Type and Number:
Japanese Patent JP3387971
Kind Code:
B2
Abstract:
PURPOSE: To provide a process for production of the bidirectional electrical steel sheet having extremely outstanding magnetic characteristics by regulating the texture and cold rolling rate of a slab in production of the electrical steel strip by using a steel strip obtd. by solidification of molten steel by a moving and refreshing surface of a cooling body.
CONSTITUTION: The {100} face strength parallel with the front surface of the billet in the central layer at the thickness of the billet in the case of formation of the steel strip is specified to 2.3 times in paired random and the rolling rate at the time of cold rolling to ≥15 and <50% in the production of the electrical steel sheet by solidifying the molten steel consisting of ≤4.0% Si, ≤2.0% Al and >2.5% (Si+2Al) and the balance substantially Fe by the moving and refreshing surface of the cooling body to form the cast steel strip, then cold rolling the cast steel strip to a prescribed thickness then subjecting the steel strip to finish annealing. As a result, the main bearings attain {100}, <011> after the finish annealing. The electrical steel sheet suitable for static apparatus is obtd. The characteristics (efficiency) of the apparatus are greatly improved even when the electrical steel sheet is used for a rotating machine.
Inventors:
Tomoji Kumano
Takeshi Kubota
Hiroaki Masui
Takeshi Kubota
Hiroaki Masui
Application Number:
JP15575493A
Publication Date:
March 17, 2003
Filing Date:
June 25, 1993
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21B3/02; B22D11/06; C21D8/12; C22C38/00; H01F1/16; (IPC1-7): C21D8/12; B21B3/02; B22D11/06; H01F1/16
Domestic Patent References:
| JP5881951A | ||||
| JP6021328A | ||||
| JP533062A | ||||
| JP5732326A | ||||
| JP2156024A | ||||
| JP6306467A |
Attorney, Agent or Firm:
Hiroaki Tamura (1 outside)