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Electromagnetic control method for directly restricting and controlling liquid level fluctuation of conducting metal fluid

A conductive metal, constraint control technology, applied in the field of electromagnetic processing and forming of materials, can solve the problems of constraining conductive metal fluid level fluctuations and propose a more universal method, and achieve the effect of wide applicability

Active Publication Date: 2015-05-27
NORTHEASTERN UNIV
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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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  • Electromagnetic control method for directly restricting and controlling liquid level fluctuation of conducting metal fluid
  • Electromagnetic control method for directly restricting and controlling liquid level fluctuation of conducting metal fluid
  • Electromagnetic control method for directly restricting and controlling liquid level fluctuation of conducting 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

parameters

Conductivity

6.94×10 6 S / m

relative permeability

1

[0036] Such as 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 al...

Embodiment 2

[0039] A copper disc-shaped conductor coil is used as the disc-shaped conductor coil. Such as 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 perpendic...

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Abstract

The invention provides an electromagnetic control method for directly restricting and controlling the liquid level fluctuation of conducting metal fluid. According to the method, magnetic pressure is exerted onto the liquid level of the conducting metal fluid, so that the liquid level of the conducting metal fluid generates a downward thrust for controlling the liquid level fluctuation, a group of parallel direct conducting wire coils or disc-shaped conducting wire coils is horizontally arranged on the liquid level of the conducting metal fluid requiring the liquid level fluctuation control, and in addition, harmonic alternating current electricity is introduced into the coils, so that the liquid level of the conducting metal fluid is in a horizontal direction alternating magnetic field, according to the electromagnetic induction effect, the alternating magnetic field generates induction current in the conducting metal fluid, the induction current and the alternating magnetic field realize mutual action, magnetic pressure vertical to the liquid level is formed at the liquid level of the conducting metal fluid, and the magnetic pressure equals to the reinforcement on the gravity field, so that the decoration and the fluctuation of the liquid level of the conducting metal fluid are controlled.

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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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
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