Title:
STEEL MATERIAL FOR SOFT MAGNETIC COMPONENTS AND METHOD FOR PRODUCING SOFT MAGNETIC COMPONENT USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/088328
Kind Code:
A1
Abstract:
A steel material for soft magnetic components, which exhibits excellent magnetic characteristics after annealing, and which is characterized by being composed of 0.0001 mass% to 0.05 mass% of C, more than 0 mass% but 0.5 mass% or less of Si, 0.1 mass% to 0.5 mass% of Mn, more than 0 mass% but 0.02 mass% or less of P, more than 0 mass% but 0.1 mass% or less of S, more than 0 mass% but 0.05 mass% or less of Al and more than 0.01 mass% but 0.1 mass% or less of N, with the balance made up of Fe and unavoidable impurities, while having an area ratio of the ferrite structure of 95.0% or more. This steel material for soft magnetic components is also characterized by satisfying formula (1).
[N] - (1/2[Al]) > 0.01 (1)
In the formula, [N] and [Al] represent the contents (mass%) of N and Al, respectively.
Inventors:
SAKATA MASAYUKI
CHIBA MASAMICHI
CHIBA MASAMICHI
Application Number:
PCT/JP2017/039760
Publication Date:
May 17, 2018
Filing Date:
November 02, 2017
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
C22C38/00; C21D6/00; C21D8/12; C22C38/60; H01F1/147
Foreign References:
| JP2005113222A | 2005-04-28 | |||
| JP2007046125A | 2007-02-22 | |||
| JP2007051343A | 2007-03-01 | |||
| JP2015127454A | 2015-07-09 | |||
| JP2010185102A | 2010-08-26 |
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Download PDF: