ABSTRACT
This chapter discusses manufacturing steps associated with the processing of sheet and strip subsequent to the primary cold rolling of the hot band. These include cleaning, heat treating, temper rolling, secondary cold rolling, foil rolling, shearing, side trimming and slitting, metallic and organic coating, embossing, roll forming and oiling. In the cold-rolling process, the original grains of the workpiece become highly distorted and elongated as exemplified by the microstructure of full-hard black plate. Although rolling lubricant residues are useful in providing the rolled strip with a certain degree of corrosion resistance, such residues must be completely removed prior to, or during the further processing of the strip. Annealing and normalizing involve the recrystallization of the work hardened strip, the drastic reduction in dislocation density and the development of a new crystallographic texture. Recrystallization starts when the high-angle boundary subgrains begin to grow at the expense of their neighbors to form new grains that are relatively free of substructure.
