Method and device for casting electromagnetic compound control electroslag remelting fine grains

A technology of electroslag remelting and electromagnetic compounding, which is applied in the field of metal material preparation, can solve the problems of insignificant structure refinement effect, high working current and working voltage, and difficult implementation of the core of the ingot, and the strength of the magnetic field will not be weakened. , low working frequency, and the effect of improving the refining effect

Inactive Publication Date: 2015-03-04
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, looking at these technologies, their operating current and operating voltage are very high, and it is difficult to implement them in industry.
Moreover, it can only refine the structure of the edge of the ingot, and the effect of refining the structure of the center of the ingot is not obvious

Method used

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  • Method and device for casting electromagnetic compound control electroslag remelting fine grains
  • Method and device for casting electromagnetic compound control electroslag remelting fine grains
  • Method and device for casting electromagnetic compound control electroslag remelting fine grains

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Embodiment 1

[0050] In this embodiment, the electroslag remelting alloy is H13 high-alloy steel, and the electroslag uses 70% CaF 2 , 15% CaO and 15% Al 2 o 3 , the working current is 10000A, and the inner diameter of the crystallizer is The interface temperature between electrode and slag can reach up to 1900℃~2000℃, and the temperature of slag surface is generally about 1400℃~1800℃. When one end of the consumable metal electrode is inserted into the slag, the consumable metal electrode, slag pool, metal molten pool, lead The ingot and the red copper electrode plate can form a circuit through the wire and the electroslag remelting working power supply. During the electrification process, the slag pool releases Joule heat, which gradually melts the consumable metal electrode end, and the molten metal gathers into liquid droplets and passes through the slag. The pool falls into the crystallizer to form a molten metal pool. Turn on the pulse power supply, the pulse voltage is 120-200V, t...

Embodiment 2

[0052] In this embodiment, the electroslag remelting alloy is H13 high-alloy steel, and the electroslag uses 70% CaF 2 , 15% CaO and 15% Al 2 o 3 , the working current is 13000A, and the inner diameter of the crystallizer is The interface temperature between electrode and slag can reach up to 1900℃~2000℃, and the temperature of slag surface is generally about 1400℃~1800℃. When one end of the consumable metal electrode is inserted into the slag, the consumable metal electrode, slag pool, metal molten pool, lead The ingot and the red copper electrode plate can form a circuit through the wire and the electroslag remelting working power supply. During the electrification process, the slag pool releases Joule heat, which gradually melts the consumable metal electrode end, and the molten metal gathers into liquid droplets and passes through the slag. The pool falls into the crystallizer to form a molten metal pool. Turn on the pulse power supply, the pulse voltage is 120-200V, t...

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Abstract

The invention relates to a method and a device for casting electromagnetic compound control electroslag remelting fine grains, and belongs to the field of preparation of metal materials. According to the method, metallic melt generates forced convection by using the action of exerted pulse magnetic field and periodic electromagnetic force which is generated by compounding of induced current in the melt and electroslag remelting current; a metal material solidification structure is fined; and composition segregation is reduced. Metal droplets can be crushed into fine liquid drops under the action of the electromagnetic force with direction and size in periodic change; the contact area and the contact time of the metal droplets and slag liquid are improved; and a good purification effect is achieved. The device comprises an electroslag remelting work power supply, a pulse power supply and an electromagnetic compound control electroslag remelting crystallizer, wherein the crystallizer is provided with a crystallizer red copper inner sleeve, a side cooling jacket, a bottom cooling jacket and a magnet exciting coil. The method and the device can be applied to electroslag remelting and refining of metal materials such as high-temperature alloy and high alloy steel; the alloy solidification structure can be fined; the segregation is reduced; the refining effect of the electroslag remelting process is improved.

Description

technical field [0001] The invention relates to an electromagnetic composite control electroslag remelting fine-grain casting method and device, in particular, the periodic electromagnetic force generated by combining the pulse magnetic field with the induced current in the melt and the electroslag remelting current to composite control the electroslag remelting The invention relates to a method and a device for solidifying a metal material in a remelting process, belonging to the field of metal material preparation. Background technique [0002] Traditional electroslag remelting (ESR) uses the resistance heat generated when the current passes through the slag as a heat source to melt the alloy base material of the consumable electrode. In the pool, the slag is washed to clean the molten steel, so as to achieve the method of refining the alloy. [0003] In the electroslag remelting process, the size of the metal droplet determines the contact area and contact time between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/187C22B9/18
Inventor 杨院生罗天骄李应举张建伟王聪
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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