Real-time method for calibrating opening degree of steel plate blank casting machine

The invention discloses a real-time method for calibrating the opening degree of a steel plate blank casting machine, which comprises the following steps of: a strong pressure calibration step: inputting a section lifting numerical value on a corresponding section on a main control computer, and placing a cushion block; the pressing value is input until the actual value of the opening degree is not changed, and then high-pressure operation is conducted; when the strong pressure state is not relieved, data detection is conducted on the opening degree of the corresponding section face, detected numerical values are filled in and input into the corresponding opening in the calibration mode, and calibration operation is conducted; inputting a lifting section numerical value and then inputting a pressing numerical value until the actual numerical value of the opening degree is not changed, and then carrying out high-pressure operation; the step B and the step C are repeated till the deviation between the opening d