Method for controlling strip steel plate shape and application thereof

The invention provides a method for controlling the shape of a strip steel and application thereof, and the method comprises the following steps: providing a steel coil; carrying out uncoiling and flattening treatment on the steel coil by using a flattening uncoiling machine; wherein in the uncoiling treatment, the first section of the steel coil is uncoiled and flattened at the flattening speed of 60-200m/min and the uncoiling tension of 20-40kN, and the first section is strip steel from the coil tail of the outer ring of the steel coil to the position of a-a + 20m from the coil tail of the outer ring of the steel coil to the position of a-a + 20m from the coil tail of the inner ring of the steel coil; the second section of the steel coil is subjected to second section uncoiling leveling at the leveling speed of 20-40 m/min and the uncoiling tension of 50-70 kN, and the second section is strip steel from the position of a-a + 20 m of the inner ring of the steel coil to the position of the inner ring coiling