Electromagnetic swirling continuous casting method

An electromagnetic and swirling device technology, applied in casting equipment, casting molten material containers, manufacturing tools, etc., to achieve the effects of saving refractory materials, simple equipment, and easy operation of equipment

Inactive Publication Date: 2014-09-10
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems existing in the practical technology of the existing electromagnetic swirl nozzle, the present invention provides an electromagnetic swirl continuous casting method. Under the condition of not changing the continuous casting device, an independent moving mechanism and an electromagnetic swirl nozzle are installed near the crystallizer. The device enables the electromagnetic swirl device to quickly move around the nozzle when it needs to work, and implement electromagnetic swirl continuous casting

Method used

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Examples

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Embodiment 1

[0039] The electromagnetic swirl device used is horseshoe-shaped, with a structure such as Figure 7 shown;

[0040] The electromagnetic swirling device is fixed on the moving device; the nozzle is a submerged nozzle between the tundish and the crystallizer; the moving device is a sliding wheel mechanism fixed on the tundish trolley;

[0041] During continuous casting, the electromagnetic swirling device is moved around the nozzle through the moving device, and a rotating electromagnetic field is applied to the molten steel in the nozzle to rotate the molten steel in the nozzle to obtain a uniform outlet flow;

[0042] The electromagnetic swirl device is directly moved around the nozzle through the mobile device, so that the electromagnetic swirl device surrounds the nozzle; the working process is as follows: Figure 9 shown;

[0043] The electromagnetic swirl device is equipped with a water cooling jacket; the magnetic induction of the electromagnetic swirl device is at 10 ...

Embodiment 2

[0047] The electromagnetic swirl device used is a split 360° ring type, with a structure such as Figure 5 As shown; the split 360° ring type electromagnetic swirl device is divided into the first part and the second part, one end between the two parts is hinged, and the other end is equipped with a matching locking device;

[0048] The electromagnetic swirling device is fixed on the moving device; the nozzle is a submerged nozzle between the tundish and the crystallizer; the moving device is a sliding wheel mechanism fixed on the mobile trolley;

[0049] During continuous casting, the electromagnetic swirling device is moved around the nozzle through the moving device, and a rotating electromagnetic field is applied to the molten steel in the nozzle to rotate the molten steel in the nozzle to obtain a uniform outlet flow;

[0050] When the electromagnetic swirling device is in the standby position, open the locking device of the electromagnetic swirling device; when it is nec...

Embodiment 3

[0054] The electromagnetic swirl device used is a 180o semi-circular ring type, with a structure such as Figure 6 shown;

[0055] The electromagnetic swirling device is fixed on the moving device; the nozzle is a long nozzle between the ladle and the tundish; the moving device is a sliding wheel mechanism fixed on the mobile trolley;

[0056] During continuous casting, the electromagnetic swirling device is moved around the nozzle through the moving device, and a rotating electromagnetic field is applied to the molten steel in the nozzle to rotate the molten steel in the nozzle to obtain a uniform outlet flow;

[0057] The electromagnetic swirl device is equipped with an air-cooled sleeve; the magnetic induction of the electromagnetic swirl device is at 10 -1 T, frequency at 50Hz;

[0058] The sliding wheel mechanism includes a cantilever, a pulley and a bracket; the electromagnetic swirl device is fixed on the bracket, the bracket is fixed on the pulley, and the pulley is ...

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Abstract

The invention discloses an electromagnetic swirling continuous casting method, and belongs to the technical field of smelting continuous casting. The electromagnetic swirling continuous casting method comprises the following steps: (1) a used electromagnetic swirling device is 180-degree semicircular ring-shaped, split 360-degree ring-shaped, horseshoe-shaped or improved horseshoe-shaped; (2) the electromagnetic swirling device is fixed onto a moving device; a nozzle is an immersive nozzle between a tundish and a crystallizer, or a long nozzle between a steel ladle and the tundish; (3) during continuous casting, the electromagnetic swirling device is moved close to the nozzle by the moving device so as to exert a swirling electrical field to molten steel. The electromagnetic swirling continuous casting method is universally applicable to various technical conditions such as a circular blank, a square blank and a slab blank, can be accurately and optimally designed, and is simple and easy to operate; original continuous casting equipment is not required to be restructured.

Description

technical field [0001] The invention belongs to the technical field of smelting continuous casting, in particular to an electromagnetic swirl continuous casting method. Background technique [0002] In the continuous casting process, the mainstream of the submerged nozzle outlet usually swings left and right, that is, there is a bias flow of uneven size in the mold, which will lead to uneven flow and temperature distribution in the mold, resulting in liquid level A series of problems such as local cooling, breakout, and cracks on the surface of the slab; the bias flow can also cause liquid level fluctuations, especially as the continuous casting casting speed increases, the inhomogeneity of the outlet flow increases, and the liquid level fluctuations increase, thereby limiting the drawing The speed increase; the bias flow will also lead to eddy slag entanglement near the nozzle and shear slag entanglement near the short side, resulting in serious slab quality defects: such a...

Claims

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Application Information

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IPC IPC(8): B22D11/10B22D11/115B22D41/62
Inventor 苏志坚赫冀成陈进丸川雄净王强
Owner NORTHEASTERN UNIV
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