Hot-rolled sheet, also known as hot-rolled sheet or hot-rolled steel plate, refers to an aluminum sheet product processed by a hot rolling mill. Usually, hot-rolled aluminum sheets are made from 4 x 8 aluminum sheet with a thickness of 400-500 mm that are processed multiple times by a hot-rolling mill. Due to the higher pressure during processing, the internal structure is more uniform and the grain size is better. The microstructure of the hot-rolled aluminum sheet is more uniform and dense. After anodizing, the surface texture of the hot-rolled aluminum plate is consistent, without ripples and color difference.

In the process of hot-rolled sheet processing, it is necessary to reasonably control the metallographic structure, mechanical properties, surface quality and geometric size and shape of the hot-rolled aluminum sheet to meet the quality requirements of subsequent processing and final products. In the hot rolling process of aluminum and aluminum alloys, the change of microstructure is a very complicated process. First, the grains of the material are deformed under the action of the strong rolling force, the as-cast grains are flattened, and the grains of the material are flattened along the rolling direction, while being elongated and strain hardened, and then dynamic recovery and dynamic regeneration may occur. crystallization.

Hot-rolled sheet products are generally divided into two categories, one is hot-rolled thick aluminum plate, and the other is hot-rolled aluminum coil. Hot-rolled thick aluminum plate refers to an aluminum alloy plate with a thickness of not less than 6.0 mm. The main varieties are hot-rolled plate (H112), annealed plate (O), quenched or quenched pre-stretched plate, etc. Hot rolled 1/8 aluminum sheet are usually used in hot rolling mills. It is produced by the block method, and its typical process is: ingot (homogenization) milling, edge rolling, heating, hot rolling, shearing, interruption, straightening.