Bar continuous rolling production line

Abstract

The invention discloses a bar continuous rolling production line, relates to the field of bar rolling devices, and provides the bar continuous rolling production line which is suitable for producing fine-grained reinforcing steel bars through the bar segmenting method. The bar continuous rolling production line comprises a rough and intermediate rolling unit, an intermediate and finish rolling temperature control and cooling system, a finish rolling unit and an after-rolling processing unit. The finish rolling unit comprises a horizontal rolling machine, a vertical rolling machine, a pre-cut process rolling machine, a segmenting process rolling machine, an ellipse process rolling machine, a circle process rolling machine, a finish rolling temperature control and cooling system, a before-forming process rolling machine and a product finishing process rolling machine. The bar continuous rolling production line can be applied to the bar continuous rolling production line design and can be used for improving an existing rolling machine as well.

Description

technical field [0001] The invention relates to the field of bar rolling equipment, in particular to a bar continuous rolling production line. Background technique [0002] The controlled rolling and controlled cooling technology of steel rolling is a new technology and new process to save energy and improve product competitiveness in modern steel rolling production. It is also a combination of rolling engineering, plastic processing theory, metal materials, heat transfer and fluid mechanics. As a new subject of integration, as the cutting-edge technology of metal pressure processing, it has been applied and practiced in many domestic steel mills. [0003] Specifically, controlled rolling and controlled cooling technology includes two meanings of controlled rolling and controlled cooling. Controlled rolling refers to the combination of plastic deformation and solid-state phase transformation through reasonable control of the metal heating system, deformation system and temp...

AI Technical Summary

Problems solved by technology

In the pre-forming pass after the slitting is completed, due to the slitting stubble at the tear zone during the slitting process, the section of the rolled piece entering the pre-forming pass is not a completely symmetrical circle, and there is a large temperature difference in each part, and the microstructure The internal grain size is not uniform, and the uniform fine-grained structure cannot be obtained during the rolling process of the pre-forming pass and the finished pass, and its strength change cannot be well controlled, thus affecting the quality of the finished product

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