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An Electromagnetic Control Method for Direct Constraint Control of Liquid Level Fluctuation of Conductive Metal Fluid

A technology of conductive metal and restraint control, which is applied in the field of electromagnetic processing and forming of materials, can solve the problems of restraining the fluctuation of the liquid level of conductive metal fluid and propose a more universal method, and achieve the effect of wide applicability

Active Publication Date: 2016-12-07
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reasons for the fluctuation of the liquid level in the mold are: the impact of the upper circulation of the molten steel on the liquid level of the mold, the blowing of argon at the nozzle, the argon floating on the surface of the mold and breaking, the disturbance of the surface of the molten steel in the mold, and the sinusoid of the mold itself. Or the impact of non-sinusoidal vibration on the crystallizer liquid level, the above two methods only propose countermeasures in some aspects, and do not address the essence of liquid level fluctuations, and propose effective methods to control the crystallizer liquid level fluctuations as a whole
In addition, these two methods have limitations, and are only suitable for use in the crystallizer, failing to propose a more universal method for controlling the fluctuation of the liquid level of the confined conductive metal fluid

Method used

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  • An Electromagnetic Control Method for Direct Constraint Control of Liquid Level Fluctuation of Conductive Metal Fluid
  • An Electromagnetic Control Method for Direct Constraint Control of Liquid Level Fluctuation of Conductive Metal Fluid
  • An Electromagnetic Control Method for Direct Constraint Control of Liquid Level Fluctuation of Conductive Metal Fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The copper direct conduction coil is used as the parallel direct conduction coil, and the specific parameters of the copper direct conduction coil are shown in Table 2:

[0034] Table 2 Specific parameters of copper direct conduction coil

[0035] copper coil

parameter

Conductivity

6.94×10 6 S / m

relative permeability

1

[0036] like figure 1 As shown, the parallel direct conduction coil 1 with 11 turns is arranged horizontally on the liquid surface of the conductive metal fluid that needs to control the fluctuation of the liquid level. The top view of the parallel direct conduction coil is as follows figure 2 shown.

[0037] The current size is 2000A, the frequency is 20kHz harmonic AC and the frequency is 3500A, the frequency is 20kHz harmonic AC, and the height of the parallel direct coil from the conductive metal fluid surface is 10mm, so that the conductive metal fluid surface is in a horizontal direction In the alterna...

Embodiment 2

[0039] A copper disc-shaped conductor coil is used as the disc-shaped conductor coil. like Figure 4 As shown, a disk-shaped conductor coil 5 with 10 turns is arranged horizontally on the liquid surface of the conductive metal fluid that needs to control the fluctuation of the liquid level. The top view of the disk-shaped conductor coil is as follows Figure 5 shown.

[0040] The current size is 2000A, the frequency is 20kHz harmonic AC and the frequency is 3500A, the frequency is 50kHz harmonic AC, the height of the disc-shaped conductive coil from the liquid surface of the conductive metal fluid is 10mm, so that the liquid surface of the conductive metal fluid is in a horizontal direction In the alternating magnetic field 6, according to the action of electromagnetic induction, the alternating magnetic field generates an induced current 7 in the conductive metal fluid, and the induced current interacts with the alternating magnetic field to form a magnetic flux perpendicula...

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Abstract

An electromagnetic control method that directly constrains and controls the fluctuation of the conductive metal fluid level. The method applies magnetic pressure to the conductive metal fluid level, causing the conductive metal fluid level to generate a downward thrust to control the fluctuation of the liquid level. A set of parallel straight conductor coils or disc conductor coils are arranged horizontally on the conductive metal fluid surface that needs to control liquid level fluctuations, and harmonic alternating current is passed through, so that the conductive metal fluid liquid level is in a horizontal alternating magnetic field. According to Due to electromagnetic induction, the alternating magnetic field generates an induced current in the conductive metal fluid. The induced current interacts with the alternating magnetic field, forming a magnetic pressure perpendicular to the surface of the conductive metal fluid. This magnetic pressure is equivalent to the force of gravity. The field is strengthened to control the deformation and fluctuation of the conductive metal fluid surface.

Description

technical field [0001] The invention belongs to the field of electromagnetic processing and forming of materials, and in particular relates to an electromagnetic control method for directly constraining and controlling fluctuations in the liquid level of conductive metal fluid. Background technique [0002] In the process of material processing, the liquid level fluctuation of molten metal has a great influence on its solidification and forming. In the continuous casting process, when the molten steel is transported by a torpedo tanker, the rotary operation of the turret and the molten steel flows in the tundish, if the liquid level of the molten steel fluctuates greatly, it will easily cause the secondary oxidation of the molten steel and the formation of mold slag. Involved, affecting the quality of molten steel. [0003] The stability of the fluctuation of the metal liquid level in the mold has a great influence on the quality of the continuous casting slab: the vibratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/18B22D27/02B22D11/115
Inventor 邓安元李阳王恩刚尹传奇张兴武
Owner NORTHEASTERN UNIV LIAONING
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