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 o

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] Device Example 1: Time-varying magnetic field generating device and rotating magnetic field electromagnetic stirring generating device a are combined

[0052] See figure 1 with figure 2 The time-varying magnetic field generating device is a toroidal time-varying magnetic field coil 4, which is placed in the rotating magnetic field electromagnetic stirring generator a. The center of the toroidal time-varying magnetic field coil 4 is used for the blank to pass through, and the magnetic field is applied to the blank. 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. The electromagnetic force will cause strong convection, thereby making the solute distribution and temperature distribution in the melt more uniform. Thereby reducing the component segregation and shrinkage porosity in the core of the melt. Moreover, wh...

Example Embodiment

[0056] Device embodiment 2: Time-varying magnetic field generating device and traveling wave magnetic field electromagnetic stirring generating device b are combined

[0057] See Figure 4 with Figure 5 In the figure, the annular time-varying magnetic field coil 4 is taken as an example, 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 a ring yoke 1. Each ring yoke 1 is provided with more than 4 iron cores 2 and a traveling wave magnetic field coil 6. The traveling wave magnetic field coil 6 is evenly arranged on the circumference of the ring yoke 1. Inside, each iron core 2 includes an upper piece and a lower piece. One end of the upper piece of each iron core 2 is fixed to the upper surface of the traveling wave magnetic field coil 6, and the other end is fixed to the ...

Example Embodiment

[0060] Device Example 3: The time-varying magnetic field generating device is 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 is referred to Image 6 with 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; see another Picture 8 with Picture 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 time varying magnetic ...

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PUM

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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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