Continuous casting machine and method for exchanging heat of a tundish in continuous casting production of the continuous casting machine

Abstract

The invention discloses a continuous casting machine and a method for exchanging heat of tundish in continuous casting production of the continuous casting machine. The continuous casting machine comprises a steel ladle, a steel ladle rotary table, a steel ladle water gap, a tundish, a tundish water gap, a crystallizer and a guide section, and further comprises a connector, wherein the connector is placed in the crystallizer while exchanging heat of the tundish in continuous casting production; the connector comprises a cylindrical barrel body, a cold material rack supporting base and a cold material rack; the cold material rack supporting base is fixedly arranged on the bottom of the cylindrical barrel body; the cold material rack is fixedly arranged on the cold material rack supporting base in the cylindrical barrel body; the axial center line of the cold material rack is superposed with that of the cylindrical barrel body; and a space between the cylindrical barrel body and the coldmaterial rack is used for placing a short cold material. The method comprises inserting the connector into the crystallizer while exchanging heat of the tundish. According to the continuous casting machine and the method for exchanging heat of the tundish in continuous casting production of the continuous casting machine disclosed by the invention, thickness of a blank shell can be increased, bleed-out can be effectively prevented in the process of exchanging heat of the tundish, and success of exchanging heat of the tundish is guaranteed.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a continuous casting machine and a method for exchanging heat for a tundish in continuous casting production using the continuous casting machine. Background technique [0002] In the process of continuous casting, tundish metallurgy is a key link to ensure the quality of high-quality steel in the process from steel smelting and refining to solid billet production. Tundish plays an important role in the continuous casting process. Tundish metallurgy Technology has become an essential and important technology for efficient continuous casting. Tundish metallurgy plays an important role in expanding continuous casting varieties, increasing continuous casting ratio, improving caster operating rate, optimizing production operations, smooth multi-furnace continuous casting, and improving billet quality. In the continuous casting production process, the tundish can st...

AI Technical Summary

Problems solved by technology

[0003] With the needs of continuous casting business development and the continuous development of high-efficiency continuous casting machines, the service life of the tundish directly affects the operation rate of the continuous casting machine. Although various methods have been used to extend the service life of the tundish, it is still impossible Realize the effect of a single tundish for long-term continuous casting. At present, the problem that a single tundish cannot be used for a long time is solved by using the heat exchange technology of the tundish

At present, there have been disclosed continuous casting and quick-change tundish methods for various billets, but for large-section round billets with a diameter of 500mm, especially when performing dissimilar steel continuous casting of such large-section round billets, due to the large cross-section round billet The problem of the thinning of the billet shell caused by the slow solidification of the billet shell and the return temperature of the core, the existing tundish heat exchange method is prone to steel breakout during the tundish heat exchange process, so the use of the prior art tundish The heat exchange method is difficult to carry out the heat exchange operation of the tundish

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