Induction heating and refining device with tundish and channels shaped like Arabic number eight

Abstract

The invention relates to an induction heating and refining device with tundish and channels shaped like an Arabic number eight. The induction heating and refining device comprises a composite cooling system, the two molten steel channels and at least one induction heating device. The molten steel channels are connected with a large package injection chamber and a pouring chamber. The molten steel channels are arranged between the large package injection chamber and the pouring chamber in an Arabic number eight shape. One induction heater is arranged around the periphery of one molten steel channel or one induction heater is arranged around the periphery of each molten steel channel. The induction heater comprises an n-shaped iron core with the open lower end, a coil and a yoke. The coil (8) winds around the side edge of the n-shaped iron core. The yoke is arranged on an opening of the n-shaped iron core. The coil and the yoke form a complete magnetic return path. The tundish is provided with a non-magnetic protecting sleeve vertically through. One side of the iron core is arranged in the protecting sleeve. The device can be integrally assembled or disassembled, maintenance is convenient, the structural shape of the tundish and the relative positions of the large package injection chamber and various sprue gates are not changed basically, and the device is particularly suitable for the technical transformation of the tundish.

Description

[0001] Technical field [0002] The invention relates to a tundish induction heating and refining device, in particular to a tundish eight-shaped channel induction heating and refining device. Background technique [0003] In the continuous steel casting process, the tundish plays an important role in stabilizing the temperature and superheat of the molten steel, promoting the extrusion of inclusions and oxygen, and improving the surface and internal quality of the continuous casting slab. [0004] The existing tundish includes a ladle injection chamber, a pouring chamber and an induction heater. The ladle injection chamber and the pouring chamber are separated by refractory materials. Two parallel molten steel channels are set in the refractory material to connect the ladle injection chamber and In the casting room, an induction heater is installed in the refractory material. The induction heater is composed of a mouth-shaped iron core, a coil and an air cooling system. One sid...

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Problems solved by technology

[0006] The existing tundish heating device has the following disadvantages: due to the use of a single coil, the increase in heating power is limited; since the entire heater is installed between the ladle injection chamber and the pouring chamber, the overall structure of the equipment is huge, which is not conducive to technical transformation; due to the structure Due to the restriction of the heating channel, the heating channel is relatively short; because the cooling method adopted is pure air external cooling, the structure of the cooling system is very large and the efficiency is very low

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