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Metal composite steelmaking deoxidizer

A technology of metal compounding and deoxidizer, which is applied in the field of deoxidizer for steelmaking, to achieve the effects of convenient use, improvement of plasticity and toughness, and reduction of inclusions

Inactive Publication Date: 2014-04-23
广西弘耀祥科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of existing steelmaking deoxidizers, the present invention provides a composite deoxidizer with a reasonable formula and a preparation method thereof. The composite deoxidizer has the advantages of good deoxidation effect, high product utilization rate and low production cost, and can be widely used in In various steelmaking deoxidation processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The raw material formula (% by weight) of the metal composite steelmaking deoxidizer of the present invention is: 30% calcium metal, 25% industrial silicon, 30% aluminum metal, 5% mullite, 5% raw manganese ore (Mn≥40%) , Mixed rare earth 5%.

[0015] Ball mill each of the above raw materials to an average particle size of 8 mm, then mix them uniformly, and set aside; pour the mixed raw materials into a submerged arc furnace, heat to 1600 ° C, keep for 15 minutes, and then naturally cool to room temperature, and the cooled solid alloy Just break it. Its chemical composition is: Ga26.47%, Si25.19%, Al31.62%, Mn3.09%, rare earth element 4.32%, the balance is Fe and unavoidable impurities.

Embodiment 2

[0017] The raw material formula (% by weight) of the metal composite steelmaking deoxidizer of the present invention is: 30% calcium metal, 25% industrial silicon, 20% aluminum metal, 5% mullite, 12% raw manganese ore (Mn≥40%) , Mixed rare earth 8%.

[0018] Ball mill each of the above raw materials to an average particle size of 8 mm, then mix them evenly, and set aside; pour the mixed raw materials into a submerged arc furnace, heat to 1600 ° C, keep for 15 minutes, and then naturally cool to room temperature, and the cooled solid alloy Just break it. Its chemical composition is: Ga29.13%, Si26.78%, Al21.47%, Mn8.62%, rare earth element 4.61%, the balance is Fe and unavoidable impurities.

Embodiment 3

[0020] The raw material formula (% by weight) of the metal composite steelmaking deoxidizer of the present invention is: 35% calcium metal, 30% industrial silicon, 20% aluminum metal, 13% raw manganese ore (Mn≥40%), and 2% mixed rare earth.

[0021] Ball mill each of the above raw materials to an average particle size of 8 mm, then mix them evenly, and set aside; pour the mixed raw materials into a submerged arc furnace, heat to 1600 ° C, keep for 15 minutes, and then naturally cool to room temperature, and the cooled solid alloy Just break it. Its chemical composition is: Ga34.56%, Si28.79%, Al21.43%, Mn10.81%, rare earth elements 1.82%, and the balance is Fe and unavoidable impurities.

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Abstract

The invention discloses a metal composite steelmaking deoxidizer, and belongs to the technical field of a steelmaking deoxidizer. The deoxidizer comprises the following chemical components by weight (%): 10-30% of Ga, 15-40% of Si, 20-40% of Al, 3-10% of Mn, 1-5% of rare-earth elements, and the balance of Fe and inevitable impurities. The metal composite steelmaking deoxidizer is prepared from scientific and reasonable elements, has good deoxidizing and decontaminating properties by combining strong deoxidization abilities of alkaline-earth metal Ga and metal Al, and is convenient to use. The formed Al2O3 inclusion is obviously reduced, and nodulation of a casting nozzle is prevented; meanwhile, the crystal structure degeneration of steel is facilitated by adding the rare-earth elements, and the plasticity and the toughness of the steel are improved.

Description

technical field [0001] The invention belongs to the technical field of deoxidizers for steelmaking, and relates to a metal composite steelmaking deoxidizer containing elements such as Ga, Si, Al, Mn, Fe and rare earth RE. Background technique [0002] With economic development and scientific and technological progress, the demand for steel is increasing in industry and daily life, and the requirements for steel quality are also getting higher and higher. Therefore, in addition to increasing the improvement of steelmaking equipment and the innovation of production technology, it is also very important to strengthen the research and development of deoxidized alloys for steelmaking materials. The quality and performance of the final steel are directly affected by the level of oxygen content in the steel. A high oxygen content will cause the carbon to oxidize again due to the concentration of carbon and oxygen during the condensation process of molten steel, which will caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06
Inventor 贾艳桦柳春蓝丽阮付贤农韦健倪海明
Owner 广西弘耀祥科技有限公司
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