Aluminium calcium ferro-silicon alloy

A ferrosilicon alloy and aluminum-calcium technology, applied in the field of aluminum-calcium-silicon-ferrosilicon alloy, can solve the problems of unsuitable low-silicon steel molten steel refining and deoxidation treatment, affecting the removal speed of oxidized inclusions, and insufficient deep deoxidation, so as to shorten the processing time and speed up the process. Deoxidation and desulfurization speed, the effect of improving deoxidation and desulfurization capacity

Inactive Publication Date: 2009-02-18
WUFAN ALLOY ALUMINUM WUJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, due to the relatively low content of aluminum and calcium in the above-mentioned known aluminum-calcium-silicon-iron alloys, and the relatively high content of silicon, there is a relatively poor deoxidation ability and a relatively slow deoxidation speed in the known technologies. Deep deoxidation is not enough, especially because of its high silicon content, which affects the removal rate of oxidized inclusions, and is not suitable for refining deoxidation treatment of low silicon steel molten steel

Method used

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Embodiment Construction

[0025] A brief description of the preparation method of the present invention is that it can be produced according to the conventional remelting method, that is, according to the weight percentage of each component of the present invention to be prepared, the raw materials are weighed after calculation, and then put into the intermediate frequency electric furnace in batches and time periods It can be obtained by medium remelting and ingot.

[0026] One of the specific implementations,

[0027] Calculated per 1000Kg charge, weigh 258Kg of silicon-calcium alloy containing 60% silicon and 30% calcium, 263Kg of A00 aluminum ingot, 152Kg of aluminum-calcium alloy containing 74% calcium and 24.6% aluminum, and 327Kg scrap steel, and put them into the intermediate frequency electric furnace in batches and time periods The present invention is obtained by medium remelting, and the weight percentages of each component of the present invention prepared are: aluminum 28%, calcium 17%, s...

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Abstract

The invention discloses an aluminium-calcium ferrosilicon alloy to refine steel, which comprises the following parts: 28-35% Al, 17-25% Ca, 14-17% Si and Fe.

Description

technical field [0001] The invention relates to an aluminum-calcium-silicon-iron alloy mainly used for deoxidation and desulfurization of refined steel. Background technique [0002] Calcium in the form of limestone is a kind of alkaline furnace charge mixed in the iron and steel smelting process. Treating molten steel with calcium is an important means of deoxidizing molten steel, and more importantly, desulfurization with calcium can also achieve significant results. Now, calcium has become a common additive to control the shape, size and distribution of oxide and sulfide inclusions in molten steel. Calcium-treated molten steel not only has good fluidity, but also effectively reduces the problems that may occur in continuous casting, such as poor nozzle or even blockage, and improves the cleanliness, machinability, ductility and impact resistance of the final product. [0003] Calcium has strong deoxidation ability, but the calcium vapor pressure is very high at steelmak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C21C7/04
Inventor 陈平
Owner WUFAN ALLOY ALUMINUM WUJIN
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