Method for avoiding rolling failure of 5083 aluminum alloy super-thick cast ingot

The invention relates to aluminum alloy heat treatment, in particular to a method for avoiding rolling failure of a 5083 aluminum alloy super-thick cast ingot, which comprises the following steps of: sequentially carrying out first-section, second-section and third-section homogenizing heat treatment on the 5083 aluminum alloy super-thick cast ingot, and directly carrying out hot rolling after the homogenizing heat treatment is finished; the heating temperature of the first-section homogenizing heat treatment is 1t; the temperature preset value and the heat preservation time lt; a heat preservation time preset value; the heating temperature of the second-stage homogenization heat treatment is equal to the temperature preset value, and the heat preservation time is 1t; a heat preservation time preset value; the heating temperature of the third-section homogenizing heat treatment is 1t; the heat preservation time is equal to the heat preservation time preset value; the preset temperature value is 470-520 DEG C,