Method for improving the surface quality of annealed steel...

Details Method for improving the surface quality of annealed steel... Method for improving the surface quality of annealed steel...

C - Chemistry, Metallurgy

21

D

148/34.4

C21D 1/74 (2006.01) C21D 1/76 (2006.01) C21D 9/52 (2006.01)

Patent

CA 1092496

ABSTRACT OF THE DISCLOSURE The discoloration or off-luster border are known as "annealing border", which may form on low-carbon steel strip during box annealing of coils in commercial HNX atmospheres is eliminated by (a) subjecting the strip to oxidizing conditions such that the coil edges undergo a weight gain of 0.08 to 0.8 mg/cm2 of strip surface and (b) reducing the so-formed oxide during box annealing.

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