Control system for producing directly rolled casting billets and control method thereof

Abstract

The invention belongs to the technical field of production of heating-free direct rolling of square and round billets, and relates to a control system for producing directly rolled casting billets anda control method thereof. The device comprises a casting billet shearing system, a sheared roller way, a conveying roller way, a billet discharging roller way, a converging roller way, a casting billet transverse moving device, a casting billet temperature measuring device, a control system, a secondary cooling water pipeline, a flow regulating valve and a nozzle. According to the control systemand the control method, whether the temperature of the casting billets meets the requirement of direct rolling on the temperature of the casting billets can be judged in time, and when the temperatureof the casting billets meets the requirement, a roller way is started to rapidly send the casting billets to steel rolling for rolling; when the temperature of the casting billets cannot meet the requirement of the direct rolling temperature, back-zone equipment is started, the casting billets are hoisted to be offline, and the secondary cooling water amount is adjusted according to factors suchas the measured temperature, the secondary cooling water inlet temperature, the molten steel superheat degree, and the historical effective casting speed of the casting billets in the secondary cooling spraying section to adjust the temperature of the casting billets to meet the requirement of the direct rolling.

Description

technical field [0001] The invention belongs to the production technical field of heating-free direct rolling of square and round slabs, and relates to a control system and a control method for producing direct rolling slabs. Background technique [0002] In the traditional slab production process, the slab needs to be reheated by the heating furnace after continuous casting and then rolled. However, due to the development of technology, the slab can be directly rolled without heating after being cut, without heating by the heating furnace. It is directly transported to the rolling steel at high speed by the roller table for rolling. Direct rolling has a high requirement on the temperature of the slab, and the current production often has the problem of low direct rolling rate because the temperature of the slab cannot meet the rolling requirements. Contents of the invention [0003] In view of this, the object of the present invention is to provide a control system and c...

AI Technical Summary

Problems solved by technology

Direct rolling has high requirements on the billet discharge temperature. In current production, the casting billet temperature often cannot meet the rolling requirements, resulting in the problem of low direct rolling rate.

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