METHOD FOR IMPROVING THE SURFACE QUALITY OF ANNEALED STEEL STRIP

摘要

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.