A New Method of Slab Rolling for Prevention of Growth of Crops

Abstract

We have developed new slabbing methods to reduce the crop losses remarkably. The new methods were devised after investigating the basic deformation behavior at both ends of the slab during slab rolling.
In particular there are two methods, namely, "Bite Back Rolling method" and "Ultra High Reduction Slabbing method", and both are effective in minimizing the crop losses. As a result of applying the two methods to an actual mill at our works, Kawasaki Steel Corp., a slab yield of 96% after conditioning of capped steel was attained by the Bite Back Rolling method, and the slab rolling yield of capped steel increased by 4%. A slab rolling yield of 97.5% for AISI 430 was attained by the Ultra High Reduction Slabbing method.