A kind of electroslag remelting device and method for preventing segregation of remelting alloy

Abstract

The invention discloses an electroslag remelting device and a method thereof for preventing segregation of remelted alloys, and belongs to the technical field of electroslag remelting. It includes a crystallizer, a power supply and a magnetic field unit; the crystallizer includes a first crystallizer, a transition crystallizer and a second crystallizer from top to bottom; the first crystallizer and the transition crystallizer are insulated and connected, and the transition The crystallizer and the second crystallizer are insulated and connected; in the slag pool, the position corresponding to the bottom of the first crystallizer is the first slag pool layer, and the position corresponding to the top of the second crystallizer is the second slag pool layer , the bottom layer is the third slag pool layer; the power supply includes a first power supply and a second power supply; the first power supply connects the consumable electrode to the first slag pool layer; the second power supply connects the second slag pool layer Connect with the third slag pool layer. The invention can effectively avoid the bonding problem between the molten metal and the crystallizer, simultaneously improve the remelting efficiency and improve the solidification quality of the electroslag ingot.

Description

technical field [0001] The invention belongs to the technical field of electroslag remelting, and more particularly relates to an electroslag remelting device and a method for preventing the segregation of remelting alloys. Background technique [0002] Many high-quality materials such as superalloys, high-speed steel, stainless steel, etc. are produced by electroslag remelting technology. However, electroslag remelting technology also has many advantages, such as low remelting efficiency and high production cost, which reduces the competitiveness of products to a certain extent. To this end, the rapid electroslag remelting technology was developed, which broke the rule that the ratio of the melting rate to the diameter of the electroslag ingot did not exceed 1, and the remelting rate was greatly increased. The core of rapid remelting is that the diameter of the slag pool is larger than that of the electroslag ingot. However, there are two problems with this technology: 1)...

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Problems solved by technology

[0008] Aiming at the problems of low remelting efficiency and poor solidification quality of electroslag ingots in the electroslag remelting device or method in the prior art, the present invention provides an electroslag remelting device and method for preventing segregation of remelted alloys; The magnetic field is set in the slag pool of the melting part and the metal molten pool forming the electroslag ingot, and the power supply for heating the slag and melting the electrode and the power supply for refining the solidified structure are set independently of each other, thus effectively solving the problem of the existing technology. The problems of low electroslag remelting efficiency and poor solidification quality of electroslag ingots

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