Steelmaking continuous casting tundish cover and manufacturing process thereof

Abstract

The invention provides a steelmaking continuous casting tundish cover which comprises a channel steel frame, a tundish cover main body, a burner and a stopper blocking hole, wherein the channel steel frame is arranged at the top of a tundish; the tundish cover main body is lapped at the top of the channel steel frame, takes on a tundish cover shape and comprises a plurality of connecting pipes which are arranged in parallel and transformed by waste water gaps and have different lengths, and the walls of two adjacent connecting pipes are connected hermetically; and the burner and the stopper plugging hole are arranged on the tundish cover main body. For the steelmaking continuous casting tundish cover, the tundish cover main body is transformed by the waste water gaps, so that no investment cost is required, the waste water gaps still have certain shape and strength, thus being capable of meeting the strength requirement of the tundish cover and leading the scheme to be feasible; compared with that the tundish cover of the support steel shell is welded by a steel plate in the prior art, the channel steel frame only needs less steel, thus saving a great amount of steel, and lowering the manufacturing cost. The invention further provides a manufacturing process of the steelmaking continuous casting tundish cover.

Description

technical field [0001] The invention relates to the technical field of metallurgical continuous casting, and more specifically relates to a tundish cover for steelmaking and continuous casting, and also relates to a manufacturing process for a tundish cover for steelmaking and continuous casting. Background technique [0002] In the process of iron and steel metallurgy, the continuous casting tundish not only has the function of storing and distributing molten steel, but also is an equipment for refining molten steel. It can improve the flow of molten steel and remove inclusions in molten steel. . The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish nozzle. In order to effectively reduce the heat dissipation of molten steel in the tundish and reduce the impact of molten steel temperature drop and high-temperature heat radiation on fi...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used tundish cover is a supporting steel shell welded by steel plates, with anchor hooks welded underneath and a refractory structure knotted. The tundish cover of this structure uses a large amount of high-cost steel, and the production cost high

[0004] In addition, the refractory materials in the above-mentioned tundish cover structure are prone to cracks and gradually fall off due to thermal stress during use, reducing the service life of the tundish cover, resulting in frequent replacement and increasing the later investment cost

Furthermore, the refractory materials falling off the tundish cover will cause secondary pollution to the molten steel, resulting in increased inclusions in the molten steel and reducing the quality of the slab

Images