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Electroslag remelting compound device and method for improving temperature distribution of slag pool by external magnetic field

A technology of electroslag remelting and temperature distribution, applied in the field of metallurgy, can solve the problems of complex manufacturing process and increase manufacturing cost, and achieve the effects of good surface quality, improved uniformity, and uniform surface temperature and melting depth.

Active Publication Date: 2022-05-03
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacturing process of the ring electrode is complicated, and the high-alloy ring electrode is usually prepared by centrifugal casting, which undoubtedly increases the manufacturing cost

Method used

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  • Electroslag remelting compound device and method for improving temperature distribution of slag pool by external magnetic field
  • Electroslag remelting compound device and method for improving temperature distribution of slag pool by external magnetic field
  • Electroslag remelting compound device and method for improving temperature distribution of slag pool by external magnetic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The electroslag remelting composite device for improving the temperature distribution of the slag pool by applying an external magnetic field includes a slag melting device and a composite device. When the power supply circuit of the composite device is connected according to the preheating power supply circuit, the structure is as follows: figure 1 As shown, when connected according to the composite power supply circuit, the structure is as follows figure 2 shown;

[0049] Composite device comprises conductive crystallizer 4, cooling crystallizer 9 and dummy plate 11; Conductive crystallizer 4 and cooling crystallizer 9 form T-shaped conductive crystallizer; Between the bottom end of conductive crystallizer 4 and the top of cooling crystallizer 9 Partitioned by the insulating gasket 6, the side wall of the cooling crystallizer 9 is equipped with a liquid level detector 8;

[0050] The conductive crystallizer 4 is connected to one pole of the composite power supply 1 ...

Embodiment 2

[0079] Device structure is the same as embodiment 1;

[0080] Method is with embodiment 1, and difference is:

[0081]The number of turns of the magnetic induction coil is 5; the current of the magnetic induction coil is 1500 / 5=300A;

[0082] The composite steel ingot is a composite roll made of Cr5-42CrMo, and there are no pores, inclusions, cracks and other defects at the interface, and the depth of the fusion layer in the circumferential direction is uniform and uniform, and the quality of the composite interface is good.

Embodiment 3

[0084] Device structure is the same as embodiment 1;

[0085] Method is with embodiment 1, and difference is:

[0086] The number of turns of the magnetic induction coil is 3; the current of the magnetic induction coil is 400 / 3=133A;

[0087] The composite steel ingot is a composite roll made of Cr5-42CrMo, and there are no pores, inclusions, cracks and other defects at the interface, and the depth of the fusion layer in the circumferential direction is uniform and uniform, and the quality of the composite interface is good.

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Abstract

An electroslag remelting compound device and method for improving the temperature distribution of a slag pool by applying an external magnetic field. A magnetic induction coil is provided on the outside of the conductive crystallizer of the device, or a magnetic induction coil is provided on the outside and the top of the top plate; the method includes: pouring molten slag into the conductive crystal After the slag pool is formed in the device; connect the preheating power supply circuit and energize the magnetic induction coil; when the surface temperature of the mandrel rod reaches the liquidus temperature, disconnect the preheating power supply circuit and connect the composite power supply circuit; Temperature uniformity on rod surface and slag pool. The device and method of the invention increase the convenience of operation, further promote the uniformity of the temperature field in the circumferential direction, and improve the uniformity of the interface bonding quality along the circumferential direction.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an electroslag remelting composite device and method for improving the temperature distribution of a slag pool by applying an external magnetic field. Background technique [0002] The roll is a key component of the steel rolling equipment. During the working process, it not only bears huge extrusion stress and shear stress, but the hot roll also bears high cyclic stress, and the surface is also subject to the periodic action of rolling material wear and cooling water. ; The surface of the roll has been in the coupling effect of thermal fatigue and mechanical fatigue during work, and the loss is very large. Due to the rapid development of the iron and steel industry, the rolling mill is constantly developing towards high speed and automation, and the width of the steel plate is also increasing, which makes the working conditions of the roll more arduous. Therefore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/187
CPCC22B9/18Y02P10/25
Inventor 董艳伍侯志文姜周华田坤杰胡志豪
Owner NORTHEASTERN UNIV LIAONING
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