Manufacturing method of hot-rolled 5083 aluminum alloy O-state plate

The invention discloses a manufacturing method of a hot-rolled 5083 aluminum alloy O-state plate, and relates to a manufacturing method of an aluminum alloy plate. The problem that energy consumption of heat treatment of an existing 5083 aluminum alloy O-state plate is high is solved. The method comprises the following steps: weighing smelting raw materials and smelting to obtain an aluminum alloy solution, casting to obtain an aluminum alloy cast ingot, carrying out homogenizing annealing on the cast ingot, and carrying out hot rolling on the cast ingot until the thickness is 4.0-6.0 mm to obtain a hot-rolled finished product; and annealing the hot-rolled finished plate. An original low-temperature long-time mode is changed into a high-temperature short-time mode, Mg atoms are not separated out, yellow color difference does not appear at the two ends of the obtained plate, energy consumption is greatly reduced, and meanwhile it is guaranteed that the mechanical performance and the surface meet the requiremen