Application of Disk Flying Shear in Rolling Mill

Although the shear machine is not in a key position in the rolling mill, it plays a crucial role in the accuracy and shape of the finished product. Different types of rolling mills should choose corresponding flying shears so that the entire production line can achieve the target size and precision. With the development of continuous steel plate rolling mills, section mills, and billet rolling mills, and the improvement of flying shear productivity, the application of flying shears has become increasingly widespread.

There are various types of flying shears, including disk flying shears, double drum flying shears, crank rotary shears, and swing shears. Disk flying shears are applied in small rolling mill workshops to perform rough cutting of the rolled pieces before entering the cooling bed, especially when the rolled pieces are too long. Additionally, they can be installed in front of the finishing mill to cut the heads of the rolled pieces, ensuring the smooth progress of the finishing mill process.

So, what is a flying shear? A flying shear is composed of two or more pairs of disk-shaped blades, and the axis of the disk is equal to the speed of steel movement. When the flying shear is in the original position, the steel moves forward along the inlet guide on the left side of the flying shear. When the steel reaches the flag switch or light guide on the inlet guide, the inlet guide deflects to the right, and the steel enters the middle of the two disks for shearing.

After the blades descend, the guide returns the steel to the original left position, and then the blades rise again. The disadvantage of this type of flying shear is that the cut is inclined. However, this does not have a significant impact on cutting heads or rough cutting of rolled pieces before the cooling bed. Due to the reliable operation, simple structure, and cutting speed of up to 10m/s or more, this type of shear machine is widely used in small rolling mill workshops.