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Electroslag remelting device and method for refining electroslag ingot solidification structure through dual-power-supply coupling

A technology of solidification structure and electroslag remelting, which is applied in the field of special metallurgy and can solve the problems of poor solidification structure quality and low remelting efficiency of electroslag ingots.

Active Publication Date: 2021-11-19
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problems of low remelting efficiency and poor quality of electroslag ingot solidification structure in electroslag remelting technology in the prior art, the present invention provides an electroslag remelting device and method for dual power supply coupling to refine the solidification structure of electroslag ingot ; By designing the power frequency power supply and the pulse power supply in the electroslag remelting device to improve the remelting efficiency and refine the solidification structure, the low remelting efficiency and the poor quality of the electroslag ingot solidification structure in the electroslag remelting technology are effectively solved The problem

Method used

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  • Electroslag remelting device and method for refining electroslag ingot solidification structure through dual-power-supply coupling
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  • Electroslag remelting device and method for refining electroslag ingot solidification structure through dual-power-supply coupling

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Embodiment 1

[0055] This embodiment provides an electroslag remelting device for dual power supply coupling to refine the solidification structure of electroslag ingots, such as figure 1 and figure 2 As shown, it includes a crystallizer, a power supply and a sump tank 700 . The crystallizer is arranged on the bottom water tank 700, and the bottom water tank 700 is used to provide cold energy to the crystallizer to solidify the metal to form an electroslag ingot 130; the top of the bottom water tank 700 is provided with a metal protection plate 710, and the metal protection plate 710 In this embodiment, it is a No. 45 steel plate with a thickness of 20 mm.

[0056] The diameter of described crystallizer is 500mm, and it comprises first crystallizer 200, conductive ring 400 and second crystallizer 600 successively from top to bottom; The diameters are the same and set correspondingly to each other. The first crystallizer 200, the conductive ring 400 and the second crystallizer 600 in thi...

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Abstract

The invention discloses an electroslag remelting device and method for refining an electroslag ingot solidification structure through dual-power-supply coupling, and belongs to the technical field of special metallurgy. The electroslag remelting device comprises a crystallizer and a power supply; a slag bath can be contained in the crystallizer, and the crystallizer sequentially comprises a first crystallizer and a second crystallizer from top to bottom; the first crystallizer and the second crystallizer are correspondingly arranged and are in insulated connection; a consumable electrode can be inserted into the first crystallizer and is immersed into the slag bath; in the slag bath, a first slag bath layer is arranged at the position corresponding to the insulated connection part of the first crystallizer and the second crystallizer, and a second slag bath layer is arranged at the bottom layer of the slag bath; the power supply comprises a power frequency power supply and a pulse power supply; a consumable electrode is connected with the second slag bath layer through the power frequency power supply; and the pulse power supply is used for connecting the first slag bath layer with the second slag bath layer. According to the method, the solidification structure of the electroslag ingot can be effectively refined while the remelting efficiency is guaranteed, and therefore the solidification quality of the electroslag ingot is improved.

Description

technical field [0001] The invention belongs to the technical field of special metallurgy, and more specifically relates to an electroslag remelting device and a method thereof for refining the solidified structure of an electroslag ingot coupled with dual power sources. Background technique [0002] As a special metallurgical method, electroslag remelting plays an important role in the production of high-quality materials such as steel for nuclear power, high-temperature alloys, and special stainless steels. The material after electroslag remelting has the advantages of high purity and compact solidified structure. However, there are also some problems in the electroslag remelting method. For example, because electroslag remelting is similar to directional solidification, relatively coarse equiaxed crystals will be formed. Although the columnar crystals in the electroslag ingot cannot be regarded as the defect of the electroslag ingot, however , if the columnar crystals ca...

Claims

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Application Information

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IPC IPC(8): C22B9/18C22B9/187
CPCC22B9/18
Inventor 施晓芳常立忠
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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