Title:
A manufacturing method of a directivity electromagnetic plate and sheet
Document Type and Number:
Japanese Patent JP6015919
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing an oriented electromagnetic steel plate, capable of stably enjoying an iron loss reduction effect.SOLUTION: An oriented electromagnetic steel plate manufacturing method is characterized by performing hot rolling of a steel slab for an oriented electromagnetic steel plate, performing a primary re-crystallization annealing after applying an etching treatment and forming a linear ditch on the surface of a cold rolled plate having a final plate thickness by cold rolling, and performing a finishing annealing. Preferably, the surface roughness of the cold-rolled plate before the etching is 0.3 μm or less in the arithmetic mean roughness Ra, by limiting the surface roughness and elastic modulus of a work roll for use in a final cold rolling.
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Inventors:
Masayasu Ueno
Matsumoto Masashi
Matsumoto Masashi
Application Number:
JP2012222674A
Publication Date:
October 26, 2016
Filing Date:
October 05, 2012
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21B1/22; B21B3/02; B21B27/00; C21D8/12; H01F1/16
Domestic Patent References:
| JP11199933A | ||||
| JP63042332A | ||||
| JP2011143440A | ||||
| JP2000102802A |
Attorney, Agent or Firm:
Ginza Marronnier Patent Office