Title:
MANUFACTURE OF GRAIN-ORIENTED ELECTRICAL STEEL SHEET WITH SMALL IRON LOSS
Document Type and Number:
Japanese Patent JPS59208020
Kind Code:
A
Abstract:
PURPOSE: To improve remarkably the magnetic characteristics, especially the iron loss by specifying the N content of a silicon steel material contg. MnS and Cu2S as the components of a precipitation dispersed phase, and cold rolling and annealing the material twice.
CONSTITUTION: A silicon steel material having a composition contg., by weight, <0.085% C, 2W4% Si, 0.03W0.09% Mn, 0.01W0.06% S, 0.02W0.2% Cu and <0.005% sol. Al as essential components and further contg. total N (T.[N]) by an amount satisfying equations I , II is hot rolled and subjected to cold rolling and annealing twice to manufacture a grain-oriented electrical steel sheet having 0.35W0.15mm final thickness. To said composition may be added <0.01% P and/or <0.1% Sn.
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Inventors:
MOCHINAGA KISHIO
FUJIWARA KOUICHI
TOUNE KAZUTAKA
KOBAYASHI TAKASHI
FUJIWARA KOUICHI
TOUNE KAZUTAKA
KOBAYASHI TAKASHI
Application Number:
JP8334083A
Publication Date:
November 26, 1984
Filing Date:
May 12, 1983
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C22C38/00; C21D8/12; C22C38/02; H01F1/16; (IPC1-7): C22C38/16; H01F1/14
Domestic Patent References:
| JPS5294825A | 1977-08-09 |
Attorney, Agent or Firm:
Kazuo Ozeki
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