Electroslag remelting slag and production technology thereof

A technology of electroslag remelting and melting temperature, which is applied in the field of electroslag remelting, can solve the problems of electroslag remelting technology influencing factors, complex operating environment, failure to meet continuous casting requirements, unsuitable for promotion and application, and achieve product Stable and uniform composition, improved yield, stable and reliable production and processing performance

Inactive Publication Date: 2016-06-29
XIXIA LONGCHENG METALLURGICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The influencing factors and operating environment of electroslag remelting technology are quite complicated. At present, there are many manufacturers and research institutions researching electroslag remelting technology, but there are still many problems in the developed electroslag remelting slag, such as single problem solving, application The scope is narrow; the process requirements are relatively harsh, so it is not suitable for popularization and application; the performance is unstable and cannot meet the requirements of continuous casting, etc., all need to continue to explore and improve

Method used

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  • Electroslag remelting slag and production technology thereof
  • Electroslag remelting slag and production technology thereof
  • Electroslag remelting slag and production technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Electroslag remelting slag, composition and mass percentage: CaF 2 : 5%, Al 2 o 3 : 40%, SiO 2 : 30%, MgO: 10%, CaO: 12%, and the rest are unavoidable impurities.

[0027] The production process of electroslag remelting slag includes the following steps:

[0028] Step S1: Prepare and weigh the following raw materials in parts by weight, 6 parts of fluorite, 40 parts of bauxite, 8 parts of calcium balls, 30 parts of high alumina cement, and 15 parts of magnesia;

[0029] Step S2: Melting, melting in an electric furnace with no lining water-cooled furnace wall at a temperature higher than the melting temperature of the slag system by 200° C. to obtain molten slag;

[0030] Step S3: solidification, the above molten slag enters the mold to cool and solidify into a glass body;

[0031] Step S4: crushing, directly crushing the solidified glass body, the particle size of the crushed powder is over 200 mesh, and the undersize is not less than 80%.

[0032] The melting tem...

Embodiment 2

[0034] A kind of electroslag remelting slag, composition and mass percentage are: CaF 2 : 5%, Al 2 o 3 : 40%, SiO 2 : 25%, MgO: 15%, CaO: 10%, and the rest are unavoidable impurities.

[0035] The production process of electroslag remelting slag includes the following steps:

[0036] Step S1: Prepare and weigh the following raw materials in parts by weight, 4 parts of fluorite, 40 parts of bauxite, 10 parts of calcium balls, 25 parts of high alumina cement, and 20 parts of magnesia;

[0037] Step S2: Melting, melting in an electric furnace with no lining water-cooled furnace wall at a temperature higher than the melting temperature of the slag system by 200° C. to obtain molten slag;

[0038] Step S3: solidification, the above molten slag enters the mold to cool and solidify into a glass body;

[0039] Step S4: crushing, directly crushing the solidified glass body, the particle size of the crushed powder is over 200 mesh, and the undersize is not less than 80%.

[0040] ...

Embodiment 3

[0042] A kind of electroslag remelting slag, composition and mass percentage are: CaF 2 : 4.5%, Al 2 o 3 : 45%, SiO 2 : 20%, MgO: 18%, CaO: 10%, and the rest are unavoidable impurities.

[0043] The production process of electroslag remelting slag includes the following steps:

[0044] Step S1: Prepare and weigh the following raw materials in parts by weight, 3 parts of fluorite, 45 parts of bauxite, 5 parts of calcium balls, 20 parts of high alumina cement, and 25 parts of magnesia;

[0045] Step S2: Melting, melting in an electric furnace with no lining water-cooled furnace wall at a temperature higher than the melting temperature of the slag system by 200° C. to obtain molten slag;

[0046] Step S3: solidification, the above molten slag enters the mold to cool and solidify into a glass body;

[0047] Step S4: crushing, directly crushing the solidified glass body, the particle size of the crushed powder is over 200 mesh, and the undersize is not less than 80%.

[0048]...

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Abstract

The invention provides electroslag remelting slag and a production technology thereof, and belongs to the technical field of electroslag remelting. The electroslag remelting slag comprises, by mass percent, 2%-5% of CaF2, 40%-50% of Al2O3, 20%-30% of SiO2, 10%-20% of MgO and 5%-15% of CaO. The producing and machining performance of the electroslag remelting slag is stable and reliable, the content of harmful elements in a steel ingot is obviously reduced, no obvious surface flaws exist in the steel ingot, product components are stable and uniform, the yield of the steel ingot is increased by 15%-20%, and the power consumption of a single furnace is reduced by more than 20%.

Description

technical field [0001] The invention belongs to the technical field of electroslag remelting, and in particular relates to an electroslag remelting slag and a production process thereof. Background technique [0002] Electroslag remelting (ESR) technology is a special smelting method for producing high-grade hot work die steel. It is a secondary refining method that uses the resistance heat generated when current passes through slag as a heat source to remelt consumable electrodes. . During the melting of the consumable electrode, the formation of metal droplets, and the dripping process, a series of physical and chemical reactions occur between the steel slag, thereby removing non-metallic inclusions and harmful substances in the steel. At the same time, the top-down crystallization process of the electroslag remelting process can significantly improve the solidification quality of the ingot and increase the anisotropy of the hot work die steel. [0003] Because the remel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18
CPCC22B9/18
Inventor 别飞雄张福陈永彦王旭阳梁冠东王正英
Owner XIXIA LONGCHENG METALLURGICAL MATERIALS CO LTD
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