Title:
A manufacturing method of a nondirectional electromagnetic plate and sheet
Document Type and Number:
Japanese Patent JP6127408
Kind Code:
B2
Abstract:
Provided is a method for stably obtaining a non-oriented electrical steel sheet with high magnetic flux density and excellent productivity, at a low cost by casting in a continuous casting machine a slab having a chemical composition including by mass%, C: 0.0050% or less, Si: more than 3.0% and 5.0% or less, Mn: 0.10% or less, Al: 0.0010% or less, P: more than 0.040% and 0.2% or less, N: 0.0040% or less, S: 0.0003% or more and 0.0050% or less, Ca: 0.0015% or more, and total of at least one element selected from Sn and Sb: 0.01% or more and 0.1% or less, balance including Fe and incidental impurities, subjecting the slab to heating, then subjecting the slab to hot rolling to obtain a hot rolled steel sheet, then subjecting the steel sheet to hot band annealing, pickling, subsequent single cold rolling to obtain a final sheet thickness, then subjecting the steel sheet to final annealing, wherein in the hot band annealing, soaking temperature is 900°C or higher and 1050°C or lower, and cooling rate after soaking is 5°C/s or more.
Inventors:
Tadashi Nakanishi
Zaizen Yoshiaki
Yoshihiko Oda
Hiroro Toda
Zaizen Yoshiaki
Yoshihiko Oda
Hiroro Toda
Application Number:
JP2012181014A
Publication Date:
May 17, 2017
Filing Date:
August 17, 2012
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21D8/12; B22D11/00; C22C38/00; C22C38/60; H01F1/147
Domestic Patent References:
| JP2012149337A | ||||
| JP2001247943A | ||||
| JP2010024509A | ||||
| JP2007162096A | ||||
| JP2012136764A |
Attorney, Agent or Firm:
Kenji Sugimura
Kengo Yoshida
Kengo Yoshida
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