Hot rolling is a metalworking process where metal is heated above its recrystallization temperature and then deformed through rollers. This technique allows for significant shaping and reduction of thickness, making it easier to work with materials like steel and aluminum. The high temperatures help to reduce the strength of the metal, allowing it to be shaped more easily. During hot rolling, the metal is typically processed into sheets, plates, or bars. The process improves the material's mechanical properties, such as ductility and toughness, while also refining its grain structure. Hot rolling is commonly used in the production of structural steel and various metal products.