Short-period and low-energy-consumption heat treatment method after forging of supporting roll

The invention discloses a supporting roll post-forging heat treatment method with short period and low energy consumption, belongs to the technical field of supporting roll heat treatment, and solves the technical problems of long period and high cost of a supporting roll post-forging heat treatment process in the prior art. The method comprises the following steps: step 1, carrying out material waiting and heat preservation on the supporting roller; 2, furnace sealing and cooling are conducted on the supporting roller; step 3, carrying out heat preservation under the condition of 300 to 400 DEG C; 4, after heat preservation, the temperature of the supporting roller is increased to 650-670 DEG C; step 5, carrying out heat preservation under the condition of 650-670 DEG C; 6, the temperature is increased to 880-950 DEG C at the speed smaller than or equal to 50 DEG C/h, and the process time is 10 h; 7, heat preservation is conducted under the condition of 880-950 DEG C, and the heat preservation time is 20-45