Thermal simulation method for obtaining set cooling speed through dynamic CCT test

The invention discloses a thermal simulation method for obtaining a set cooling rate through a dynamic CCT test, and the method comprises the steps: carrying out the dynamic CCT test on an MMM-200 testing machine, and in the heating stage, the heat preservation stage, the deformation stage and the cooling stage of a sample, manually adjusting the gear of a moving shaft cylinder through the cooperation of a cooling system and a pneumatic system of an instrument, the problems that the swelling amount of the sample is increased due to swelling and the actual cooling speed is inconsistent with the set cooling speed due to thermal expansion and cold contraction are effectively solved, and the falling condition of the sample in the heating process is effectively avoided; the situation that phase change of the steel grade occurs at the temperature is misjudged due to the fact that the swelling amount is increased due to the fact that the heating temperature of the sample is too high or the heat preservation time is