What is hot rolling?

Hot rolling is a rolling process that is carried out above the recrystallization temperature. Specifically, when a billet is heated to a high enough temperature, it goes through multiple rolling processes. In this process, the steel plate will be cut and straightened, and finally form our common hot-rolled steel plate.

This hot rolling process has significant advantages. First of all, it can effectively reduce energy consumption. Compared with traditional cold rolling, hot rolling has higher plasticity of the metal and lower deformation resistance, which means that the energy consumption required during the metal deformation process is greatly reduced. This not only helps to improve production efficiency, but also reduces production costs, thus bringing greater economic benefits to enterprises.

Secondly, hot rolling can improve the processing properties of metals and alloys. During the hot rolling process, the coarse grains in the cast state will be broken, which helps to heal significant cracks and reduce or eliminate casting defects. At the same time, the as-cast structure will also be transformed into deformed structure, thus improving the machining performance of the alloy. This makes the hot-rolled steel plate have better performance in the subsequent processing and application.

Hot rolling is an important process of high efficiency, energy saving and improving metal working performance. By rolling at high temperature, it can improve metal plasticity and reduce deformation resistance, thus reducing energy consumption and improving production efficiency. At the same time, hot rolling can also improve the processing properties of metals and alloys, providing a better foundation for subsequent processing and application. Therefore, hot rolling plays an indispensable role in the steel industry.