Annealing separator used in the finishing annealing step for...

Details Annealing separator used in the finishing annealing step for... Annealing separator used in the finishing annealing step for...

C - Chemistry, Metallurgy

21

D

148/45, 148/58,

C21D 1/44 (2006.01) C21D 1/72 (2006.01)

Patent

CA 1277894

ANNEALING SEPARATOR USED IN THE FINISHING ANNEALING STEP FOR PRODUCING A GRAIN-ORIENTED ELECTRICAL STEEL SHEET ABSTRACT OF THE DISCLOSURE An annealing separator used in a finishing annealing step for producing a grain-oriented electrical steel sheet usually contains magnesia. The present invention is characterized by including, based on 100 parts by weight of magnesia, from 0.2 to 20 parts by weight of ferromanganese nitride or manganese nitride which con- sists of a composition (Mnl-xFex)Ny having x and y values corresponding to A, B, C, and D and falling within a region surrounded by A, B, C, and D shown in the appended Fig. 1. The annealing separator according to the present invention is effective for stabilizing secondary recrystallization and improving the properties of a forsterite film.

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