Title:
ANNEALING FACILITY, AND METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2024/043063
Kind Code:
A1
Abstract:
Provided is an annealing facility which more actively controls carbon in steel, thereby contributing to further improvement of magnetic properties. This annealing facility has a heating zone, a soaking zone, and a cooling zone on a steel strip conveyance line, wherein: the conveyance line can pass a steel strip having a thickness of 2.8 mm or greater; the soaking zone has a means for maintaining the ambient temperature at 900°C or greater; the cooling zone has a means for supplying a refrigerant to the steel strip to set the average cooling rate in a temperature range of 750°C to 120°C to at least 50°C/s; and a means for removing the refrigerant is provided on the outlet side of the cooling zone.
Inventors:
SHINGAKI YUKIHIRO (JP)
TORIU JUNICHI (JP)
YOSHIKAWA AYAKA (JP)
TORIU JUNICHI (JP)
YOSHIKAWA AYAKA (JP)
Application Number:
PCT/JP2023/028834
Publication Date:
February 29, 2024
Filing Date:
August 07, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/56; C22C38/00; C22C38/04; H01F1/147; C22C38/60
Foreign References:
| JPH05171370A | 1993-07-09 | |||
| JP2002361314A | 2002-12-17 | |||
| JPS5861235A | 1983-04-12 | |||
| JPS6167720A | 1986-04-07 | |||
| JPS5268054A | 1977-06-06 | |||
| JP2005262217A | 2005-09-29 | |||
| JP2011518947A | 2011-06-30 | |||
| US20100300583A1 | 2010-12-02 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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