Title:
高強度電磁鋼板およびその形状加工部品とそれらの製造方法
Document Type and Number:
Japanese Patent JP5000136
Kind Code:
B2
Abstract:
The present invention has as its object to stably produce a high strength electrical steel sheet and a processed part of the same which is high in strength and has wear resistant and is superior in magnetic flux density and core loss without greatly changing the cold rollability and production processes from those of conventional electrical steel sheet and provides a high strength electrical steel sheet characterized by containing, by mass%, C: 0.06% or less, Si: 0.2 to 6.5%, Mn: 0.05 to 3.0%, P: 0.30% or less, S or Se: 0.040% or less, Al: 2.50% or less, Cu: 0.6 to 8.0%, N: 0.0400% or less, and a balance of Fe and unavoidable impurities and containing in the steel a metal phase composed of Cu of a size of 0.1 µm or less. The method of production of the same comprises holding in a temperature range of 300°C to 720°C for 5 seconds or more for heat treatment.
Inventors:
Hidekuni Murakami
Application Number:
JP2005514520A
Publication Date:
August 15, 2012
Filing Date:
October 06, 2004
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C21D8/12; C21D9/46; C22C38/60; H01F1/147; H01F1/16
Domestic Patent References:
| JP2004084053A | 2004-03-18 | |||
| JPH10183247A | 1998-07-14 | |||
| JP2001234303A | 2001-08-31 |
Foreign References:
| WO1999047718A1 | 1999-09-23 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Masaya Nishiyama
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Masaya Nishiyama