Title:
A manufacturing method of a nondirectional electromagnetic plate and sheet
Document Type and Number:
Japanese Patent JP6146582
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonoriented electromagnetic steel sheet capable of hot rolling a low ally-based nonoriented electromagnetic steel sheet having γ→α transformation with high productivity without reducing magnetic properties.SOLUTION: In a method for a nonoriented electromagnetic steel sheet including re-heating, then hot rolling including rough rolling and finishing rolling, cold rolling and finishing rolling a slab having a component composition containing, by mass%, C:0.005% or less, Si:0.05 to 1.0%, Mn:1% or less, Al:1.0% or less, P:0.2% or less, S:0.005% or less and N:0.005% or less and the balance Fe with inevitable impurities and having γ-α transformation, total rolling reduction rate in the finishing rolling is 93% or more, rolling finishing temperature of Artransformation point or less and the finishing rolling is conducted at maximum rolling speed of a finishing rolling device.
Inventors:
Kazuhisa Iwanaga
Application Number:
JP2014094592A
Publication Date:
June 14, 2017
Filing Date:
May 01, 2014
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21D8/12; B21B1/26
Domestic Patent References:
| JP2008156741A | ||||
| JP2001181743A | ||||
| JP2007217744A | ||||
| JP49020867B1 | ||||
| JP7073735B2 |
Attorney, Agent or Firm:
Ginza Marronnier Patent Office
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