System for producing ribbed bar by quartered hot rolling production line

Abstract

The invention discloses a system for producing a ribbed bar by hot rolling, in particular a system for producing the ribbed bar by a quartered hot rolling production line, belongs to the technical field of steel rolling equipment, and provides a production system with relatively low running cost, relatively low equipment investment cost and relatively low fund occupied rate during rolling production. The system comprises at least two rough rolling machine sets, at least two medium rolling machine sets and at least two fine rolling machine sets which are sequentially arranged, wherein rollers are arranged on rolling machines; the rollers arranged on each rolling machine of the rough rolling machine set are flat and straight rollers without rolling slots; and a rolling hole consists of a radial gap between two adjacent rollers on each rolling machine.

Description

technical field [0001] The invention relates to a production system for producing ribbed steel bars by hot rolling, in particular to a production system for producing ribbed steel bars by four-cut hot rolling, and belongs to the technical field of steel rolling equipment. Background technique [0002] The so-called four-slitting technology is a steel rolling technology that passes a steel billet through the rolling hole formed by the rolling groove of the roll on the rolling mill, and simultaneously cuts it into four pieces of bars that meet the requirements during the rolling process. At present, the domestic traditional Φ8mm~Φ16mm hot rolling production technology of four-cut ribbed steel bars adopts hole rolling in the process of rough rolling and intermediate rolling. The perforated rolling is a rolling method in which rolling grooves are provided on the rolls of the rolling mill, and rolling holes are formed by the rolling grooves on the upper and lower rolls. Although...

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Problems solved by technology

Although perforated rolling has the advantages of high material shape and size control accuracy, since each roll needs to be cut in advance, the utilization rate of the rolls is low, and because the rolls of each rolling mill on the production line The rolling holes formed by the rolling grooves are all different, so that each rolling mill in the process of rough rolling and intermediate rolling must have a certain number of spare rolling mills to ensure production. Usually, the number of spare rolling mills is one and three for use. One, three spares

In this way, the operating cost of rolling production is high, the equipment investment cost is large and the capital occupation rate is high

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