Method for preventing head warping of steel part during rolling and application of method

The invention provides a method for preventing a steel part from warping during rolling and application of the method, and relates to the technical field of steel smelting. The steel part is heated and then fed into a rolling unit to be rolled. Heating comprises the steps that coal gas is sprayed out of upper burners and lower burners of the heating furnace for heating, the number of the upper burners and the number of the lower burners of a soaking section of the heating furnace are the same and are in one-to-one correspondence, and the flow of the coal gas sprayed out of the upper burners at the starting point of the soaking section is 1.1-1.8 times of the flow of the coal gas sprayed out of the corresponding lower burners; and the flow of the coal gas sprayed out of the upper burner at the end point of the soaking section is 0.8-1.5 times of the flow of the coal gas sprayed out of the corresponding lower burner. By controlling the heating process of the heating furnace in the rolling process and controllin