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High-aluminium alloy and its prepn process

A technology of aluminum alloy and aluminum elements, which is applied in the field of ferroalloy smelting, can solve problems such as limitations in the use process, and achieve stable yields, high economic benefits, and good deoxidation effects

Inactive Publication Date: 2003-02-26
SHANGHAI ZHENGLI FERRO ALLOY
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

All of these products are subject to many restrictions in use because of their relatively large amounts of silicon or manganese in their ingredients

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The process conditions adopt a 1000kg intermediate frequency coreless induction furnace with a standard capacity of 1000kg and a maximum power of 400kw.

[0023] (1) Ingredients: The rated amount of each furnace is 600kg, and the pure material formula:

[0024] Steel: 260kg Yield: 97%

[0025] Aluminum: 366kg Yield: 95%

[0026] (2) Melting:

[0027] ①Put 260kg of steel material into the intermediate frequency furnace, heat it with electricity, and melt the steel material.

[0028] ② Add 6kg of iron oxide or 70kg of oxygen to decarburize and desiliconize the molten steel to reduce the carbon content in the molten steel to

[0029] 0.1% or less, silicon content 0.05% or less.

[0030] ③Add 6kg of calcium carbide to deoxidize the molten steel for 2-3 minutes.

[0031] ④ Add slag material: lime 7kg, fluorite 3kg, alkaline slag. After the slag is formed, sprinkle 300g of ferrosilicon powder or silicon on the slag surface

[0032] Alkali powd...

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Abstract

The present invention relates to a high-aluminium alloy and its preparation process, belonging to intermediate alloy scope for deoxidizing molten steel and compounding aluminium element in steel making process. This kind of aluminium alloy with specific weight between that of aluminium and iron is prepared to replace pure aluminium in deoxidizing molten steel and compounding aluminium element. The present invention has stable yield, low total aluminium consumption and saving in resource.

Description

technical field [0001] The high aluminum alloy product belongs to the category of master alloy of steel or iron, is a deoxidation product used for deoxidation of molten steel in the steelmaking process and a master alloy mixed with aluminum element in steel, and its preparation method belongs to the technical field of ferroalloy smelting. Background technique [0002] As we all know, steelmaking is an oxidation-reduction reaction at high temperature. The steel material will be oxidized to different degrees during the melting process, and the oxygen content in the steel will also increase sharply due to the oxidation of the steel material, which will cause a large loss of alloy elements added to the steel during the refining process, which not only enhances the steelmaking process Cost, waste of resources, but also directly affect product quality due to excessive oxygen content in steel. For a long time, in order to reduce the oxygen content in steel, pure aluminum is genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
Inventor 朱卫民朱士斌黎杰钱一明
Owner SHANGHAI ZHENGLI FERRO ALLOY
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