Abstract
Roll slitting of hot slabs is investigated using an experimental mill and a slabing mill. Fundamental characteristics are obtained, such as necessary conditions for slitting, deformation behavior during slitting, and required load and torque to slit. Large deformation of shape, such as camber and increase of thickness near slit surface, causes difficulty during handling and rolling of the slab. Based on these experimental results, two practical slitting processes which prevent deformation of slab arc developed.
Hot rolling test of slit slabs is conducted using a hot strip mill, and its stability during rolling and the quality of hot coils are as good as those of normal hot rolling.
