Novel square billet continuous casting secondary cooling water adjusting structure

Abstract

The invention discloses a novel square billet continuous casting secondary cooling water adjusting structure which comprises a spraying rack capable of adjusting secondary cooling water, wherein the spraying rack comprises an inner arc spraying rack and an outer arc spraying rack; a plurality of inner and outer arc nozzles of which ejection holes are opposite to one another are perpendicularly formed in the inner arc spraying rack and the outer arc spraying rack; left spraying racks and right spraying racks are respectively arranged on the left sides and the right sides of the inner arc spraying rack and the outer arc spraying rack; a plurality of left nozzles and right nozzles, of which ejection holes are opposite to one another, are perpendicularly arranged on the left spraying racks and the right spraying racks; a water inlet tube connector and an air inlet tube connector connected with workshop tubes are arranged at the end part of each spraying rack. When being used, the spraying racks are connected with the workshop tubes through metal hoses, so that water-air communication can be achieved; the problems that the quantity of cooling water cannot be finely adjusted and the cooling effect is poor as a secondary cooling zone cannot be divided into a plurality of small zones because of problems such as machining, manufacturing, assembling, disassembling, repairing and equipment cost can be solved; by adopting the novel square billet continuous casting secondary cooling water adjusting structure, on the premise that the cost is reduced, the quantity of water can be finely adjusted, the actual water flow density of secondary cooling water is approximate to theoretic water flow density as much as possible, and the quality of a cast blank can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of billet continuous casting secondary cooling, in particular to a novel billet continuous casting secondary cooling water adjustment structure. Background technique [0002] With the rapid development of continuous casting technology and the improvement of the market's quality requirements for slabs, more and more attention has been paid to the issue of secondary cooling. The purpose of the secondary cooling is to make the slab receive continuous cooling after leaving the crystallizer and completely solidify in the shortest possible time, so as to improve the production capacity of the casting machine. The distribution of cooling water along the length of the slab, the slab moves down from the crystallizer, the surface temperature of the slab gradually decreases, and the slab shell thickens, so the amount of secondary cooling water (cooling intensity) gradually decreases from top to bottom, and the required...

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Problems solved by technology

[0013] In order to overcome the above-mentioned problems in the prior art, the object of the present invention is to provide a novel billet continuous casting secondary cooling water adjustment structure, which solves the problem that the secondary cooling cannot be distinguished due to the consideration of processing and manufacturing, loading and unloading and maintenance, and equipment costs. For several sub-districts, the cooling water volume cannot be finely adjusted and the cooling effect is not good; the present invention can finely adjust the water volume under the premise of saving costs, so that the actual water flow density of the secondary cooling water is as close as possible to the theoretical water flow density, and the casting billet quality is significantly improved

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