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Built-in type electromagnetic stirring device and application method thereof

An electromagnetic stirring and electromagnetic stirrer technology, applied in the field of built-in electromagnetic stirring devices, can solve the problems of insufficient space for installation, difficulty in adapting to multi-stream casting conditions, low energy utilization rate, etc., and achieves high use efficiency, compact structure, small space effect

Inactive Publication Date: 2014-03-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are still the following problems in continuous casting electromagnetic stirring: 1) Low energy utilization rate
2) Difficult to adapt to multi-stream casting conditions
However, semi-continuous casting is often used in aluminum alloy casting. In order to improve production efficiency, multi-flow forms are usually used, and there is not enough space to install the electromagnetic stirring crystallizer currently used in steel continuous casting.

Method used

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  • Built-in type electromagnetic stirring device and application method thereof
  • Built-in type electromagnetic stirring device and application method thereof
  • Built-in type electromagnetic stirring device and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] To produce A356 alloy ingots with a diameter of 200mm by semi-continuous casting, the specific steps are: use water-cooled copper coils to make a horizontal rotating magnetic field electromagnetic stirrer to form a horizontal rotating magnetic field with a frequency of 0.3 Hz, and the copper tubes are separated by insulating varnish and insulating cloth. The inner diameter of the copper tube is 5mm, the outer diameter is 8mm, and it is wound into a coil with an outer diameter of 100mm and a height of 100mm. The electromagnetic stirrer is protected by a heat-resistant alumina ceramic protective sleeve, and the alumina ceramic protective sleeve is made of nano-Al 2 o 3Toughened, with an inner diameter of 120mm, an outer diameter of 140mm, and a height of 200mm. During use, alumina ceramic particles with a particle size of 100μm are spread on the bottom of the ceramic protection tube, and the thickness is 5mm. The electromagnetic stirrer and heat-resistant ceramic protectiv...

Embodiment 2

[0032] To produce 6061 alloy ingots with a diameter of 200mm by semi-continuous casting, water-cooled copper coils are used to make a horizontal rotating magnetic field electromagnetic stirrer to form a horizontal rotating magnetic field with a frequency of 0.8 Hz. The copper tubes are separated by insulating paint and insulating cloth. The inner diameter of the copper tubes 5mm, outer diameter 8mm, wound into a coil with an outer diameter of 100mm and a height of 100mm, the electromagnetic stirrer is protected by a heat-resistant alumina ceramic protective sleeve, and the alumina ceramic protective sleeve is made of nano-Al 2 o 3 Toughened, with an inner diameter of 120mm, an outer diameter of 140mm, and a height of 200mm. During use, alumina ceramic particles with a particle size of 200μm are spread on the bottom of the ceramic protection tube, and the thickness is 6mm. The electromagnetic stirrer and heat-resistant ceramic protective sleeve are fixed. On the guide rod above...

Embodiment 3

[0035] To use semi-continuous casting to produce A356 alloy ingots with a diameter of 250mm, water-cooled copper coils are used to make a horizontal rotating magnetic field electromagnetic stirrer to form a horizontal rotating magnetic field with a frequency of 1.5Hz. The copper tubes are separated by insulating paint and insulating cloth, and the inner diameter of the copper tubes 10mm, outer diameter 14mm, wound into a coil with an outer diameter of 150mm and a height of 130mm, the electromagnetic stirrer is protected by a heat-resistant alumina ceramic protective sleeve, and the alumina ceramic protective sleeve is made of nano-Al 2 o 3 Toughened, with an inner diameter of 180mm, an outer diameter of 210mm, and a height of 250mm. During use, magnesia particles with a particle size of 400μm are spread on the bottom of the ceramic protection tube with a thickness of 10mm. The electromagnetic stirrer and heat-resistant ceramic protective sleeve are fixed on the On the guide ro...

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Abstract

The invention relates to an electromagnetic stirring method and a device thereof, in particular to a built-in type electromagnetic stirring device embedded in the melts of the crystallizer and a method thereof. Hydrocooling cooper wires are used to make horizontal rotating magnetic field magnetic stirrer, and heat-resisting ceramics protective casing is used to protect. The magnetic stirrer and the heat-resisting ceramics protective casing are fixed on the guide rod above the ingot hole of the multistreaming ingot mold. The guide rod is connected with a support horizontally movable above the ingot mold. The up and down movement of the guide rod is controlled through the motor mounted on the support, and the frequency and strength of magnetic stirring is controlled by the motor. After pouring is started, the magnetic stirrer which is protected by the heat-resistant ceramics protective casing is placed in the aluminum alloy melts in the multistreaming ingot mold. Starting the magnetic stirring, stirring while pouring, after the ingot mold is poured to designated length, take out the magnetic stirrer from the multistreaming ingot mold, ready for use after cooling. The device is highly flexible and compact with high magnetic efficiency, convenient to assemble.

Description

technical field [0001] The invention relates to an electromagnetic stirring method and device, in particular to a built-in electromagnetic stirring device placed in a melt in a crystallizer and a method thereof. technical background [0002] Because electromagnetic stirring can significantly improve the quality of casting slabs, countries around the world have conducted extensive research on its optimal technology, design, mechanism and potential, and developed a series of new electromagnetic stirring technologies and new equipment. The application of continuous casting electromagnetic stirring technology has promoted the progress of high-efficiency and high-quality continuous casting technology, and it is one of the most important developments in continuous casting technology and electromagnetic metallurgy technology since the 1960s. The essence of electromagnetic stirring in continuous casting is to strengthen the movement of molten steel in the liquid cavity by means of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/115
Inventor 陈刚赵玉涛张松利张振亚
Owner JIANGSU UNIV
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