Title:
ANNEALING SEPARATING AGENT
Document Type and Number:
Japanese Patent JP2012177148
Kind Code:
A
Abstract:
To provide an annealing separating agent that suppresses buckling that occurs in an inner diameter part of a coil when winding up a steel sheet into a coil shape.
The annealing separating agent containing magnesia, contains at least 0.05-20 mass% magnesia with a particle size of 25 μm or more and less than 75 μm, wherein the content of magnesia with a particle size of 75 μm or more is suppressed to 0.01 mass% or less, and a volume shrinkage rate is 20-80%.
Inventors:
TERAJIMA TAKASHI
OKUBO TOMOYUKI
OKUBO TOMOYUKI
Application Number:
JP2011040143A
Publication Date:
September 13, 2012
Filing Date:
February 25, 2011
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
C21D8/12; C01F5/02; C22C38/00; C22C38/06; C22C38/60
Domestic Patent References:
| JPH0971811A | 1997-03-18 | |||
| JP2001303137A | 2001-10-31 | |||
| JPH07188937A | 1995-07-25 | |||
| JPS55138021A | 1980-10-28 | |||
| JPH11335742A | 1999-12-07 | |||
| JP2001303258A | 2001-10-31 |
Attorney, Agent or Firm:
Kenji Sugimura
Kiyoshi Kuruma
Yamaguchi Yusuke
Kiyoshi Kuruma
Yamaguchi Yusuke
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