Process for combined continuous casting of double sections

Abstract

The invention relates to a process for the combined continuous casting of double sections, belonging to the technical field of continuous casting in steel production. The process is as follows: 1) a multimachine multi-strand casting machine is divided into such two working sections as an A section and a B section according to the number of machine strands; crystallizers, sectorial segments and nozzles of different specifications and different technological parameters are used for processing the two sections; and 2) a billet ejection system provided with a pusher dog of a billet dividing machine is used for the bidirectional ejection of billets towards both sides from the middle, and casting billets of the two sections are separately piled by two travelling cranes. The pulling rate and thenumber of the opened machine strands are set, and the partial difference of the billet passing volumes of the two sections is controlled to be within plus or minus 8 according to the principle of basic balance of the general billet passing volumes of the two sections. The invention has the advantages of high production efficiency, capability of rolling rolled products of different specifications and low energy consumption.

Description

technical field [0001] The invention relates to a double-section combined continuous casting process, which belongs to the technical field of continuous casting for iron and steel production. Background technique [0002] At present, the converter and continuous casting of newly-built iron and steel enterprises at home and abroad have undergone great changes. The volume of the original converter is generally below 60t, but the volume of the converter of the newly-built iron and steel enterprise is generally above 100t. The continuous casting machine that matches it Great changes have also taken place, from the original 3 streams and 4 streams to the current 6 streams, 8 streams or even more streams. The production pattern of large converters with multi-strand continuous casting machines has been initially formed. At present, the production capacity of most casting machines has doubled compared with the original one, and the maintenance time of equipment has also been doubled...

AI Technical Summary

Problems solved by technology

This production organization mode not only cannot realize the hot delivery and hot charging of cast slabs, resulting in a great waste of energy, but also often shuts down and waits for materials in the rolling process, which restricts the improvement of rolling capacity.

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