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Electromagnetic stirring generating device, method and application of composite time-varying magnetic field

A generating device and electromagnetic stirring technology, applied in the field of steel continuous casting equipment, to achieve the effect of increasing fatigue performance and reducing mechanical properties

Active Publication Date: 2019-09-20
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no published literature that combines time-varying magnetic field and electromagnetic stirring. The present invention combines time-varying magnetic field and electromagnetic stirring in the production process of continuous casting and die casting, filling the gap between time-varying magnetic field and electromagnetic stirring compound field. There is no blank application in the field of molten steel continuous casting and die casting

Method used

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  • Electromagnetic stirring generating device, method and application of composite time-varying magnetic field
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  • Electromagnetic stirring generating device, method and application of composite time-varying magnetic field

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Experimental program
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Effect test

Embodiment 1

[0051] Device embodiment 1: The time-varying magnetic field generating device is combined with the rotating magnetic field electromagnetic stirring generating device a

[0052] see figure 1 and figure 2 , the time-varying magnetic field generating device is an annular time-varying magnetic field coil 4, placed in the rotating magnetic field electromagnetic stirring generating device a, the center of the annular time-varying magnetic field coil 4 is used for the billet to pass through, and the magnetic field acts on the billet, and the billet generates a corresponding Performance changes. When the two magnetic fields act on the melt at the same time, a current will be induced in the melt, and the current will interact with the magnetic field to generate electromagnetic force, which will lead to strong convection, so that the solute distribution and temperature distribution in the melt will be more uniform. Thereby reducing composition segregation and shrinkage porosity in th...

Embodiment 2

[0056] Device embodiment 2: The time-varying magnetic field generating device is combined with the traveling wave magnetic field electromagnetic stirring generating device b

[0057] see Figure 4 and Figure 5 , the figure takes the annular time-varying magnetic field coil 4 as an example to illustrate, showing that the time-varying magnetic field generating device is coaxially sleeved in the traveling wave magnetic field electromagnetic stirring generating device b.

[0058] The traveling wave magnetic field electromagnetic stirring generating device b includes annular yokes 1, and each annular yoke 1 is provided with more than four iron cores 2 and traveling wave magnetic field coils 6, and the traveling wave magnetic field coils 6 are evenly arranged on the circumference of the annular yoke 1. Inner side, each iron core 2 all comprises upper piece and lower piece, and one end of the upper piece of each iron core 2 is fixed with the upper surface of traveling wave magnetic...

Embodiment 3

[0060] Device embodiment 3: The time-varying magnetic field generating device is simultaneously combined with the rotating magnetic field electromagnetic stirring generating device a and the traveling wave magnetic field electromagnetic stirring generating device b

[0061] This embodiment has two implementation forms, one of which can be found in Figure 6 and Figure 7 , the rotating magnetic field electromagnetic stirring generating device a is set in the traveling wave magnetic field electromagnetic stirring generating device b, and the time-varying magnetic field generating device is placed in the rotating magnetic field electromagnetic stirring generating device a; another see Figure 8 and Figure 9 , the time-varying magnetic field generating device, the rotating magnetic field electromagnetic stirring generating device a and the traveling wave magnetic field electromagnetic stirring generating device b are coaxially sleeved, and from the inside to the outside are the...

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Abstract

The invention relates to an electromagnetic stirring generating device, method and application of a composite time-varying magnetic field. The device is a composite rotating magnetic field electromagnetic stirring generating device or a time-varying magnetic field generating device, or a traveling wave magnetic field electromagnetic stirring generating device. According to the method and the application, in the continuous casting, semi-continuous casting or die casting process, the electromagnetic stirring generating device of the composite time-varying magnetic field acts on a crystallizer for continuous casting or semi-continuous casting, a secondary cooling zone and any one position or multiple positions of the tail end or a riser in the mold casting production, liquid level and the like, so that the mechanical property of a casting blank is improved by improving the component segregation and the shrinkage porosity of the casting blank. Compared with the continuous casting or semi-continuous casting or die-casting production process, electromagnetic stirring or time-varying magnetic fields are independently applied, so that the shrinkage porosity and component segregation of the core of the casting blank are remarkably improved.

Description

technical field [0001] The invention relates to an electromagnetic stirring generation device, method and application of a composite time-varying magnetic field, and belongs to the technical field of iron and steel continuous casting equipment. Background technique [0002] Steel is the most widely used structural material and the foundation of industry, agriculture, national defense and national comprehensive strength. With the improvement of resources, energy and environmental concepts, people have put forward higher requirements for steel materials and their production technologies. High cleanliness, high homogenization, ultra-fine crystallization, low consumption and low pollution have become a new generation of steel production technologies. direction of development. In recent years, with the improvement of metallurgical industry technology and equipment level, the cleanliness in the smelting process and the ultra-fine crystallization level in the rolling and heat trea...

Claims

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Application Information

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IPC IPC(8): B22D11/115
CPCB22D11/115
Inventor 张云虎叶春洋徐燕祎苏月莹申严平陈湘茹徐智帅翟启杰
Owner SHANGHAI UNIV
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