Answer:
Metal sheet
Step-by-step explanation:
The objective is to produce slabs of a certain thickness from thicker slabs, or blocks or ingots. The reduction is progressive, in several steps and always in the same plane, each step reduces the thickness by a certain percentage. The efforts reach thousands of tons due to the large areas involved. The working cylinders, which come into contact with the material, are supported by backing cylinders, with a larger diameter, which prevents those from breaking. In any case, the elastic deformation results in a greater deflection in the middle than at the ends of the cylinders. To prevent the plates from having a different thickness along the width, the diameters of the working cylinders are larger in the middle than at the ends. Those products are normally brought to their final state by cooling at room temperature after the rolling process.