What is hot rolling process

Hot rolling refers to rolling performed above the recrystallization temperature of the metal. Specifically, hot rolling is relative to cold rolling, which is rolling performed below the recrystallization temperature. During hot rolling, the metal has high plasticity and low deformation resistance, which can significantly reduce energy consumption and reduce costs. At the same time, hot rolling can also improve the processing performance of metals and alloys, break the coarse grains in the cast state, significantly heal cracks, reduce or eliminate casting defects, transform the cast structure into a deformed structure, and improve the processing performance of the alloy.

Hot rolling technology is widely used in the processing of various metal materials, such as steel, aluminum, etc. During hot rolling, the metal sheet is heated and continuously rolled by the rolling mill to form the desired shape and size. Hot-rolled products have good mechanical properties and processing properties and are widely used in many fields such as construction, automobiles, machinery, and chemicals.

The main parameters of hot rolling include rolling temperature, rolling speed, and reduction. The reasonable selection of these parameters has an important influence on the quality and performance of hot-rolled products. At the same time, the biting stage, pulling stage, stable rolling stage and final rolling stage in the hot rolling process are also key factors affecting product quality.