Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-aluminum steel continuous casting method
The invention discloses a high-aluminum steel continuous casting method, which comprises the following steps of: adopting zirconium stuffing sand in a steel ladle to reduce the reaction between the stuffing sand and molten steel, and blowing argon into a ladle cover hole or a ladle cover refractory material by adopting technical measures such as tundish cover argon blowing, so that the atmosphere oxygen content in a tundish is reduced from 17-21 percent to 0.1 percent or below; and a large amount of secondary oxidation caused by air in the first furnace casting and subsequent continuous casting processes of the tundish is avoided. According to the method, the reaction of aluminum in the high-aluminum steel with the stuffing sand and air is greatly reduced, and the burning loss of alloy elements is reduced; inclusions of formed Al2O3 are reduced, so that the quality of a final product is improved; the nozzle blocking rate is greatly reduced, the production is more stable, and the number of continuous casting furnaces is increased; contact between molten steel and air is reduced, and the nitrogen increasing amount is remarkably reduced.
本发明公开了一种高铝钢连铸方法，在钢包内采用锆质引流砂减少引流砂与钢液的反应，以及采用中间包包盖吹氩等技术措施在包盖孔上或包盖耐材内吹入氩气，使中包内气氛氧含量从17～21％降低至0.1％以下，避免中包第一炉开浇和后续连浇过程中，空气造成的大量二次氧化。本方法大幅度减少了高铝钢中铝与引流砂和空气的反应，减少了合金元素的烧损；形成的Al2O3夹杂减少，有利于提高最终产品的质量；水口堵塞率大幅度降低，生产更加稳定，连浇炉数增加；减少钢液与空气接触，增氮量显著减少。
High-aluminum steel continuous casting method
The invention discloses a high-aluminum steel continuous casting method, which comprises the following steps of: adopting zirconium stuffing sand in a steel ladle to reduce the reaction between the stuffing sand and molten steel, and blowing argon into a ladle cover hole or a ladle cover refractory material by adopting technical measures such as tundish cover argon blowing, so that the atmosphere oxygen content in a tundish is reduced from 17-21 percent to 0.1 percent or below; and a large amount of secondary oxidation caused by air in the first furnace casting and subsequent continuous casting processes of the tundish is avoided. According to the method, the reaction of aluminum in the high-aluminum steel with the stuffing sand and air is greatly reduced, and the burning loss of alloy elements is reduced; inclusions of formed Al2O3 are reduced, so that the quality of a final product is improved; the nozzle blocking rate is greatly reduced, the production is more stable, and the number of continuous casting furnaces is increased; contact between molten steel and air is reduced, and the nitrogen increasing amount is remarkably reduced.
本发明公开了一种高铝钢连铸方法，在钢包内采用锆质引流砂减少引流砂与钢液的反应，以及采用中间包包盖吹氩等技术措施在包盖孔上或包盖耐材内吹入氩气，使中包内气氛氧含量从17～21％降低至0.1％以下，避免中包第一炉开浇和后续连浇过程中，空气造成的大量二次氧化。本方法大幅度减少了高铝钢中铝与引流砂和空气的反应，减少了合金元素的烧损；形成的Al2O3夹杂减少，有利于提高最终产品的质量；水口堵塞率大幅度降低，生产更加稳定，连浇炉数增加；减少钢液与空气接触，增氮量显著减少。
High-aluminum steel continuous casting method
一种高铝钢连铸方法
XIE XIN (Autor:in) / CHEN GANG (Autor:in) / WU CHENHUI (Autor:in) / LI YANG (Autor:in)
26.01.2024
Patent
Elektronische Ressource
Chinesisch
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