Si-Ca-Bi-Fe alloy for alloying refined steel

An alloying, silicon calcium bismuth technology, applied in the field of ferroalloys, can solve the problems of large calcium deoxidation loss and low calcium solubility, and achieve the effects of improving the deoxidation and desulfurization capacity, reducing the silicon content, and accelerating the deoxidation and desulfurization speed.

Inactive Publication Date: 2015-05-20
铜陵百荣木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deoxidation ability of calcium is very strong, but the vapor pressure of calcium at the temperature of steelmaking is very high, and the solubility of calcium in molten steel is very small, so the loss of deoxidation with a single calcium is too large

Method used

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  • Si-Ca-Bi-Fe alloy for alloying refined steel
  • Si-Ca-Bi-Fe alloy for alloying refined steel
  • Si-Ca-Bi-Fe alloy for alloying refined steel

Examples

Experimental program
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Embodiment 1

[0016] A silicon-calcium-bismuth-iron alloy used for alloying treatment of refined steel, its components and the weight percentage of each component are: 10% of silicon; 35% of calcium; 18% of bismuth; and the balance of iron. The preparation method of the present invention is produced according to a conventional remelting method.

Embodiment 2

[0018] A silicon-calcium-bismuth-iron alloy used for refining steel alloying treatment, its components and the weight percentage of each component are: 15% of silicon; 32% of calcium; 28% of bismuth; and the balance of iron. The preparation method of the present invention is produced according to a conventional remelting method.

Embodiment 3

[0020] A silicon-calcium-bismuth-iron alloy used for refining steel alloying treatment, its components and the weight percentage of each component are: 20% of silicon; 30% of calcium; 45% of bismuth; and the balance of iron. The preparation method of the present invention is produced according to a conventional remelting method.

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Abstract

The invention discloses a Si-Ca-Bi-Fe alloy for alloying refined steel. The alloy comprises the following components in percentage by weight: 10-20% of Si, 30-35% of Ca, 18-45% of Bi and the balance of Fe. Since the Ca content is increased properly, the capability of deoxygenation and desulfuration is increased and deep deoxygenation and desulfuration can be realized, deoxygenation and desulfuration speed is increased, the time of deoxygenation and desulfuration of molten steel is shortened, the production efficiency is enhanced; in addition, Bi is added and the Si content is reduced; the Si-Ca-Bi-Fe alloy can be used for refining low-SI steel.

Description

technical field [0001] The invention relates to the technical field of iron alloys, in particular to a silicon-calcium-bismuth-iron alloy used for alloying treatment of refined steel. Background technique [0002] In the process of smelting low-silicon and low-carbon steel in the converter, the molten steel needs to be deoxidized and desulfurized to make the mass percentage of each chemical component in the molten steel meet the requirements. At present, aluminum manganese titanium, aluminum manganese calcium, aluminum wire, etc. are used as deoxidation materials. Although these have the function of deoxidation and alloying, due to the high aluminum content, after the reaction between aluminum and oxygen in molten steel, a large amount of Al2O3, and Al2O3 has a relatively high viscosity, it is not easy to float into the steel slag from the molten steel, and its retention in the molten steel will affect the refining process, and the melting point of aluminum is low, and the y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21C7/064
Inventor 梅百荣
Owner 铜陵百荣木业有限公司
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