The rolling process is a metal forming process in which the raw material passes between one or more pairs of rollers to reduce and maintain a uniform thickness.

This process mainly focuses on the cross-section of the ingot or the metal being formed. Mainly through this process, we have reduced the thickness of the metal workpiece. Nowadays, the rolling process mainly focuses on increasing length and reducing thickness, without changing the width of the workpiece. There are certain types of rolling processes, and during the hot rolling process, the metal is heated to the ideal temperature. When the metal is appropriately heated, it should pass between one or more rolling mills to obtain the target shape.

As for any other rolling process, this process is widely used. During this process, the metal is heated above the recrystallization temperature. During the hot working process, the metal changes its grain structure due to heat, and now a new set of strain free grains appear in the metal. This process requires less force, which reduces the quality of surface smoothness.

Now there is another rolling process, which is the cold rolling process. The rolling process is carried out below the recrystallization temperature of the metal, which varies with the change of the metal. The room temperature can also be below the recrystallization temperature. During this process, greater force is required than the hot working process to allow the metal to pass through the rollers, and this process provides a good surface finish.

Through the introduction of rolling in the article, we understand that rolling is defined as the process of forming metal, where the metal strip is pressed by two or more rollers to form a uniform thickness. Compared to forging, rolling is a more economical deformation method when long and uniform cross-sectional metal is required. Follow our Baijia account to learn more about rolling knowledge and applications.