There are many types of shear machines used by rolling workshop. According to the shape and configuration of the blade of the scissors and the shape of the rolling parts, the shear machine can be divided into: parallel blade shear shear, diagonal blade shear, and discoscopic scissors And all kinds of flying scissors.
The two blade of the parallel blade shear machine is parallel to each other, which is characterized by the two cut blades in contact with the metal cut metal at the same time. The shear process is completed once in a short period of time, the shear efficiency is high, and the shear is large. Usually used for horizontal thermal shear first rolling billets (square, plate blank) and other squares and rectangular sections.
The two blades of the scoop cutting machine have a certain angle. Generally, the blade is tilted and the lower blade is horizontal. Such shear machines are often used for cold -cut and hot -cut steel plates, steel belts, thin plates, and welded pipe billets, and are sometimes used to cut small steel.
The blade of the discoscopic shear machine is made into a disc, and there are two types of discs used in the steel rolling workshop: one type for longitudinal shear for steel plates and steel; Essence Their common features are to complete the shear task by rotating pair pair pair -pair -pair -pair -cut blades.
Flying scissors are mainly used for rolling parts of horizontal shear motion. Flying scissors are applied in type steel production, billet production and steel plate production. The cutting point of the flying shear is to complete the shear task during the operation of the steel, so the operation speed of the steel is required to be roughly the same as that of the cutting blade. Most of these shear machines are arranged on the operation line of semi -continuous or continuous rolling machines.
Recently, in order to solve the problem of a large load of the cutting blade, a step -by -step shear machine has occurred. The characteristics of this type of scissors are in sections in the shear process. The various types of cutting machines mentioned earlier are the eccentric axis or less than one circle to complete the shear movement, and the step -type shear machine is a number of eccentric axes to complete the shear action. The eccentric value of the eccentric axis on the step-type shear machine is less (usually 5-10mm). The step -type shear machine uses a set of step institutions to continuously change the position of the knife table to complete the entire shear process.
