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Center feeding method for electroslag remelting

An electroslag remelting and feeding technology, which is applied in the feeding of saving metal consumption, electroslag remelting of large-diameter steel ingots, and electroslag remelting center feeding, can solve problems such as large waste, reduce loss, The effect of reducing feeding energy consumption and stabilizing melting stability requirements

Active Publication Date: 2019-12-20
SHENYANG RES INST OF FOUNDRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a new electroslag remelting feeding method, which can greatly save the amount of feeding metal and reduce loss under the premise of ensuring the quality of the casting, and better solve the problem of conventional electroslag remelting large-diameter steel ingot feeding The problem of large amount of metal waste can achieve the effect of less melting and more feeding

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  • Center feeding method for electroslag remelting
  • Center feeding method for electroslag remelting
  • Center feeding method for electroslag remelting

Examples

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Embodiment 1

[0039] Taking the electroslag remelting 1000mm diameter steel ingot as an example, the consumable electrode diameter for normal melting is 600mm, the average voltage is 80V, and the average current is 20000A. When the height of the casting reaches the predetermined requirement, the small-diameter consumable electrode for feeding and the stacked embedded crystallizer are replaced immediately. The diameter of the small-diameter consumable electrode for feeding is 200mm, and the diameter of the embedded crystallizer is 350mm. The power outage time from the end of normal melting to the start of feeding is 5 minutes (that is, the sum of the time for replacing the small-diameter consumable electrode for feeding and the stacking embedded crystallizer).

[0040] After entering the feeding power supply, the initial melting voltage is 56V, and the initial melting current is 4000A. When the metal liquid level enters the embedded mold, the melting voltage remains unchanged, and the melti...

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Abstract

The invention provides a center feeding method for electroslag remelting. The shape of an electroslag casting molten pool is utilized, a center feeding method is adopted, and feeding relies on a small-diameter consumable electrode, so that the amount of feeding metal is greatly saved. In order to adapt to feeding by the small-diameter consumable electrode, an embedded crystallizer is used to meetthe melting smoothness requirements of the small-diameter consumable electrode and reduce the feeding energy consumption. The method better solves the problem that a conventional electroslag remeltinglarge-diameter steel ingot causes a large amount of wasted metal, and achieves the effect of less melting and more feeding.

Description

technical field [0001] The invention belongs to the technical field of electroslag metallurgy, and in particular relates to a new electroslag remelting center feeding method, and in particular provides a metal consumption-saving feeding technology for electroslag remelting large-diameter steel ingots. Background technique [0002] At present, the preparation of large-scale high-quality steel ingots by electroslag remelting has been widely used at home and abroad. With the continuous progress of electroslag remelting technology, metallurgical quality, solidification quality and steel ingot forming quality are gradually improving. However, there has been no new breakthrough in the post-feeding technology of electroslag remelting. For electroslag remelted large-diameter steel ingots, the removal amount caused by post-feeding accounts for about 5-10% of the total weight, and the economic loss is relatively large. [0003] The purpose of feeding in the later stage of electrosla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/10
CPCB22D23/10Y02P10/20
Inventor 陈瑞熊云龙赵岭赵黎廷田雨张春铭宋阳
Owner SHENYANG RES INST OF FOUNDRY