Difference Between Hot Rolled and Cold Rolled？

Cold-rolled steel is steel that is produced by cold rolling. Cold rolling is the process of further thinning the steel plate to the target thickness at room temperature. Hot-rolled steel is a type of steel that is rolled above the crystallization temperature. The thickness of the cold-rolled steel plate is more precise, the surface is smooth and beautiful, and it also has a variety of superior mechanical properties, especially in terms of processing properties. During hot rolling, the metal has high plasticity and low deformation resistance, which greatly reduces the energy consumption of metal deformation. Hot rolling can improve the processing technology performance of metals and alloys, that is, the coarse grains in the casting state are broken, the cracks are healed significantly, the casting defects are reduced or eliminated, the casting structure is transformed into the deformed structure, and the processing performance of the alloy is improved.