Furnace end beam structure for steel rolling heating furnace

Abstract

The invention provides a technical scheme of a furnace end beam structure for a steel rolling heating furnace. The technical scheme is as follows: the furnace end beam structure comprises a furnace end beam steel structure, wherein the furnace end beam steel structure is connected with a furnace top crossbeam by virtue of a furnace end beam hanging structure; a circulating cooling pipe is arranged in the furnace end beam steel structure. The furnace end beam structure is characterized in that the circulating cooling pipe is also connected with a sewage discharge device, a flow monitoring device and a temperature monitoring device; the flow monitoring device and the temperature monitoring device are also connected with a control device; a multi-section heat preservation structure matched with the outer surface of the furnace end beam steel structure is arranged outside the furnace end beam steel structure; the heat preservation structure arranged on the top of the furnace end beam steel structure is connected with a hanging bracket. According to the technical scheme, a series of problems of down-warping of a furnace end beam, failure of refractory materials of the furnace end beam, rich impurities in the furnace end beam and the like in the prior art are solved, so that the overhauling difficulty and construction period are greatly reduced; meanwhile, cooling water in the furnace end beam steel structure can be monitored on line, thus ensuring the operation security of the furnace end beam.

Description

technical field [0001] The invention relates to a rolling process equipment, in particular to a furnace head beam structure of a steel rolling heating furnace. Background technique [0002] At present, the furnace head beam of a large-scale long slab rolling heating furnace in general is cast a layer of refractory material on the outer surface of a certain shape of water-cooled steel structure. Generally, the furnace head beam of the heating furnace will have the following problems after a period of use : [0003] (1) Due to the wide furnace and the large span of the furnace head beam, it is bent downward. In severe cases, the tapping machine cannot tap steel, and the furnace is forced to be shut down for maintenance. The reasons for the downward deflection of the burner beam are: ①The span of the burner beam is large; ②The steel structure of the burner beam bears a large weight of refractory materials; ③The steel structure of the burner beam has not been reasonably hung; ...

AI Technical Summary

Problems solved by technology

[0003] (1) Due to the wide furnace, the furnace head beam has a large span and is deflected downwards. In severe cases, the tapping machine cannot tap steel, and the furnace has to be shut down for maintenance

The reasons for the deflection of the furnace head beam are as follows: ①The furnace head beam has a large span; ②The steel structure of the furnace head beam bears a large weight of refractory materials; ③The steel structure of the furnace head beam has not been properly hung; Influenced by factors such as pressure and pipe network water quality, the cooling intensity of the furnace head beam is reduced, and it has not been effectively monitored

[0004] (2) The refractory material of the furnace head beam has cracks, serious peeling, or even collapse

①Once the refractory material collapses and falls off, it is easy to fall into the water seal tank, and then bend the walking beam, causing a major equipment accident; ②As the refractory material falls off, the water temperature of the furnace head beam increases, and the inner wall of the furnace head beam is scaled. Furthermore, the furnace head beam bulge, deformation, and water leakage appear, which affect the heating quality and even force the furnace to be shut down.

[0005] (3) Impurities are enriched in the steel structure of the furnace head beam, and the end covers at both ends are forced to be opened for cleaning during each intermediate repair

[0006] According to statistics, it takes more than 12 days to deal with each accident, which affects the production efficiency and increases the maintenance cost. This is the deficiency of the existing technology

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