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Preheater of consumable electrode and crystallizer, heating device and electroslag remelting system

A technology of consumable electrodes and heating devices, which is applied in the field of preheaters and their heating devices, and electroslag remelting systems, and can solve the problem of hydrogen content in pores at the bottom of electroslag ingots, which cannot be effectively eliminated by electroslag remelting systems. Problems such as electrode surface and crystallizer, to achieve the effect of reducing hydrogen content, reducing porosity, and reducing moisture content

Inactive Publication Date: 2021-10-08
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the electroslag remelting system in the prior art cannot effectively remove the moisture on the electrode surface and the crystallizer surface, resulting in more pores and higher hydrogen content at the bottom of the electroslag ingot, the present invention provides a consumable electrode and The preheater of the crystallizer and its heating device and the electroslag remelting system; by reasonably setting up the preheating chamber and other structures between the consumable electrode and the mold, it can effectively solve the problem that the electroslag remelting system cannot effectively eliminate the electrode surface. And the moisture on the surface of the crystallizer, resulting in more pores and higher hydrogen content at the bottom of the electroslag ingot

Method used

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  • Preheater of consumable electrode and crystallizer, heating device and electroslag remelting system
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  • Preheater of consumable electrode and crystallizer, heating device and electroslag remelting system

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Embodiment 1

[0047] This embodiment provides an electroslag remelting system, such as Figure 7 As shown, it includes a consumable electrode 400 , a heating device 100 , a crystallizer 200 , a protective cover 500 and a bottom water tank 600 . When preheating the consumable electrode 400 and the crystallizer 200 before electroslag remelting, the crystallizer 200 is arranged on the heating device 100, and the second heater 120 is located at the bottom of the inner wall 221 of the crystallizer, The consumable electrode 400 is passed through the heating device 100 and the crystallizer 200 for heating. During electroslag remelting, the preheated consumable electrode 400 and the crystallizer 200, as well as the protective cover 500 and the bottom water tank 600 are used to start solid slag.

[0048] In the above electroslag remelting system, the diameter of the consumable electrode 400 in this embodiment is R4=500mm; figure 1 As shown, the crystallizer 200 includes a crystallization chamber 2...

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Abstract

The invention discloses a preheater of a consumable electrode and a crystallizer, a heating device and an electroslag remelting system, and belongs to the technical field of special metallurgy. The preheater of the consumable electrode and the crystallizer comprises a preheating cavity arranged in the circumferential direction of the exterior of the consumable electrode, and the preheating cavity can be arranged outside the consumable electrode in a sleeving mode; the size of the preheating cavity is smaller than that of the crystallizer, and the preheating cavity can be arranged in the crystallizer in a sleeving mode; and a preheater shell is arranged outside the preheating cavity, an air inlet hole and an air outlet hole are formed in the preheater shell, and the air outlet hole corresponds to the inner wall of the crystallizer and is used for blowing preheated gas in the preheating cavity to the inner wall of the crystallizer. According to the preheater of the consumable electrode and the crystallizer, the heating device and the electroslag remelting system, preheating of the consumable electrode and the crystallizer and removal of condensate water on the surfaces of the consumable electrode and the crystallizer can be achieved at the same time so as to reduce the moisture content for an electroslag remelting system, so that the porosity and the hydrogen content of an electroslag ingot are effectively reduced, and the hydrogen content is stably controlled to be smaller than or equal to 2 ppm.

Description

technical field [0001] The invention belongs to the technical field of special metallurgy, and more specifically relates to a consumable electrode, a preheater for a crystallizer, a heating device thereof, and an electroslag remelting system. Background technique [0002] Electroslag remelting has been widely used for its superior solidification structure control and inclusion removal, especially in the fields of special stainless steel and tool steel. However, the disadvantages of electroslag remelting cannot be ignored. The most important point is that the hydrogen content at the bottom of the electroslag ingot exceeds the standard and even pores appear. This is because the water in the electroslag remelting system has not been effectively removed. When the condensed water on the surface of the consumable electrode, crystallizer or slag material is not effectively removed, the water will remain in the electroslag ingot formed by crystallization, which will lead to excessiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18C22B9/193
CPCC22B9/18
Inventor 常立忠张龙飞苏云龙
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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