What Is the Reason for the Deviation of the Finished Product Produced by the Rolling Mill?

There are many factors that affect the deviation of the finished product of the rolling mill. The size of the product rolled by the same rolling mill will also be uneven. The positive and negative deviations are determined by the rolling mill adjuster. The implementation of negative deviation rolling has become a default method for increasing production in many steel rolling industries. How can there be dimensional deviations in the products rolled by the same set of rolling mills?

In fact, there are two main reasons for the product size deviation: roll gap and pass technology. Rebar is formed by extrusion of rolling mill rolls. During the forming process, if the roll gap, roll wear, unreasonable passes, etc., it is difficult to guarantee the dimensional accuracy of the product within the qualified range. In order to reduce the deviation of product size, the product rolling process must be strictly followed, and the online adjustment of bars is required to be carried out according to the standard. The internal control standard of negative deviation rolling is planned to be diameter deviation (+0.2-0.3) mm, out of roundness If it is less than 0.3mm, the double-double rolling unit is a traditional model, the rigidity of the rolling mill is poor, the roll jump is serious, the size of the red billet of the rolled piece fluctuates greatly, the rolling process and the quality of the finished product are unstable, and the roll wear should be repaired or replaced in time.

Rebar quality standards must comply with national construction steel standards. Appearance and size are also ways to measure the quality of rebar. The poor appearance of rebar will give users a kind of visual boredom. They always think that the quality of the product is unqualified, resulting in difficulty in selling the final product. The elliptical pass with a large aspect ratio is relatively flat, the deformation of the square rolled piece along the width direction of the cross-section of the rolled piece is relatively uniform when entering the elliptical pass, the additional flow of metal is small, and the wear speed of the rolling groove is slowed down, which ensures the wear of elliptical and square passes The synchronization is uniform, which improves the service life of the rolling groove, stabilizes the rolling process, and reduces the difficulty of adjustment.

The rationalization of the production process of the rolling mill is the key to improving the overall quality standard of the equipment. The design of the rolling mill is related to reasonable output. The equipment designed and manufactured by the rolling mill has the characteristics of low production cost, safe and reliable rolling mill equipment, and strong durability. Production needs of small and medium-sized enterprises.

Luoyang Judian is a professional manufacturer of continuous rolling mills and supporting equipment. The company has perfect processing technology and advanced management mode. It is a professional factory integrating the design, manufacture, and sale of metallurgical equipment. The main products we produce are rolling mills, production lines of various rods, wires, section steels, and auxiliary equipment for rolling.