Secondary cooling device used in continuous casting process

Abstract

The invention discloses a secondary cooling device used in continuous casting process, comprising a plurality of cooling sections, wherein each cooling section comprises a cooling water pipe and a nozzle connected to the cooling water pipe, the distances between the nozzles in the cooling sections are different, the nozzles at both ends of each cooling section are obliquely arranged to a transition area, wherein the transition area is between two adjacent cooling sections. The secondary cooling device on the basis of the invention can simultaneously avoid the problems of insufficient cooling intensity of the front parts of the cooling sections, supercooling of the back parts of the cooling sections and insufficient cooling of the transition areas.

Description

Secondary cooling device used in continuous casting process technical field The present invention relates to a secondary cooling device used in the continuous casting process, more specifically, the present invention relates to a secondary cooling device used in the continuous casting process that can improve the uniformity of the secondary cooling and improve the quality of the continuous casting slab secondary cooling device. Background technique Continuous casting technology has entered the stage of industrial application since the early 1950s, and has made great progress in the past 60 years. The output and quality of continuous casting slabs have been greatly improved, and the process level and process equipment have also improved A breakthrough has been made. Secondary cooling is an important link in the continuous casting process, which directly affects the internal cracks, surface cracks and solidification structure of the slab. Good secondary cooling has a direc...

AI Technical Summary

Problems solved by technology

The lateral unevenness of the secondary cooling (inconsistent cooling on all sides of the slab) may lead to defects such as slab deviation and square billet falling off, which will affect normal production

The uniformity of secondary cooling is so important, but due to various reasons, it is difficult to guarantee the uniformity

In the prior art, although the difference in cooling intensity between cooling sections can be realized by controlling the cooling water flow rate, for the same cooling section, the flow rate between each row of nozzles cannot be controlled separately

Therefore, the difference in cooling intensity is not reflected. If the nozzles in the first few rows of the section are arranged at equal intervals, insufficient cooling may occur, and the nozzles in the latter rows may be overcooled, which does not conform to the principle of uniform cooling.

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