| 摘要 |
<P>PROBLEM TO BE SOLVED: 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. <P>SOLUTION: 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%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
