Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Using method of sealing material for submersed nozzle of continuous casting machine
The invention relates to a using method of a sealing material for a submersed nozzle of a continuous casting machine. The sealing material comprises the following raw materials in parts by weight: 60-80 parts of graphite, 8-16 parts of aluminum oxide, 3-9 parts of magnesium oxide and 2.5 to 4 parts of silicon dioxide. Graphite, aluminum oxide, magnesium oxide and silicon dioxide are crushed into powder; The using method comprises the following steps: adding water, and successively conducting mixing, smearing and baking. The sealing material disclosed by the invention is high in high temperature resistance and good in sealing effect, and is used for sealing, so negative-pressure air suction at parts such as a stopper rod, an upper nozzle and a lower nozzle quick-change surface in a continuous casting process can be effectively prevented, plate bubble defects formed by solidification and retention of gas entering molten steel is reduced, the service life of a quick change mechanism of a tundish body is prolonged, the number of continuous casting furnaces of the tundish is increased, a production operation rate is improved, production cost is reduced, the bubble defect of the plate is reduced to 0.2% or below from original 2.1%, the rolling qualification rate of a thick plate is obviously improved, and better economic benefits are created.
本发明涉及一种连铸机浸入式水口密封材料的使用方法，密封材料包括以下重量份的原料：石墨60～80份、氧化铝8～16份；氧化镁3～9份；二氧化硅2.5～4份；石墨、氧化铝、氧化镁和二氧化硅均粉碎成粉状；使用方法包括：加水混合、涂抹和烘烤。本发明的密封材料耐高温性强、密封效果好，通过使用该密封材料密封，能有效地防止连铸过程中塞棒、上水口、下水口快换面等部位的负压吸气，减少了气体进入钢水中凝固滞留形成的板材气泡缺陷，又提高中间包本体的快换机构的使用寿命，增加中间包连浇炉数，提高生产作业率，降低生产成本，板材气泡缺陷废由原来2.1％降低到了0.2％以下，厚板轧制合格率明显提高，创造了较好的经济效益。
Using method of sealing material for submersed nozzle of continuous casting machine
The invention relates to a using method of a sealing material for a submersed nozzle of a continuous casting machine. The sealing material comprises the following raw materials in parts by weight: 60-80 parts of graphite, 8-16 parts of aluminum oxide, 3-9 parts of magnesium oxide and 2.5 to 4 parts of silicon dioxide. Graphite, aluminum oxide, magnesium oxide and silicon dioxide are crushed into powder; The using method comprises the following steps: adding water, and successively conducting mixing, smearing and baking. The sealing material disclosed by the invention is high in high temperature resistance and good in sealing effect, and is used for sealing, so negative-pressure air suction at parts such as a stopper rod, an upper nozzle and a lower nozzle quick-change surface in a continuous casting process can be effectively prevented, plate bubble defects formed by solidification and retention of gas entering molten steel is reduced, the service life of a quick change mechanism of a tundish body is prolonged, the number of continuous casting furnaces of the tundish is increased, a production operation rate is improved, production cost is reduced, the bubble defect of the plate is reduced to 0.2% or below from original 2.1%, the rolling qualification rate of a thick plate is obviously improved, and better economic benefits are created.
本发明涉及一种连铸机浸入式水口密封材料的使用方法，密封材料包括以下重量份的原料：石墨60～80份、氧化铝8～16份；氧化镁3～9份；二氧化硅2.5～4份；石墨、氧化铝、氧化镁和二氧化硅均粉碎成粉状；使用方法包括：加水混合、涂抹和烘烤。本发明的密封材料耐高温性强、密封效果好，通过使用该密封材料密封，能有效地防止连铸过程中塞棒、上水口、下水口快换面等部位的负压吸气，减少了气体进入钢水中凝固滞留形成的板材气泡缺陷，又提高中间包本体的快换机构的使用寿命，增加中间包连浇炉数，提高生产作业率，降低生产成本，板材气泡缺陷废由原来2.1％降低到了0.2％以下，厚板轧制合格率明显提高，创造了较好的经济效益。
Using method of sealing material for submersed nozzle of continuous casting machine
一种连铸机浸入式水口密封材料的使用方法
ZHU YUANJIAN (Autor:in) / WANG GUAN (Autor:in) / FU QIANHUI (Autor:in) / MU KANGFENG (Autor:in) / HUANG CAIFU (Autor:in) / LIU ZHIMING (Autor:in)
01.06.2021
Patent
Elektronische Ressource
Chinesisch
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